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Conference Program
10th International Power Electronics, Drive Systems and Technologies
Conference (PEDSTC2019)
February 12-14, 2019
School of Electrical & Computer Engineering
Shiraz University
Shiraz, Iran
http://pedstc2019.com
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Conference Sponsors
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Welcome Message
I am delighted to welcome you to the 10th International Power Electronics, Drive
Systems and Technologies Conference (PEDSTC) held February 12–14, 2019 in
Shiraz University. The conference organizers are pleased to host scientific and
technological researchers as well as industrial professionals who report their novel
research results and new technological developments in the research and
application of power electronics and electrical drives.
The conference is jointly organized by Shiraz University and Grenoble Alps
University and sponsored by IEEE organization, the IEEE Iran Section, the Power
Electronics Society of Iran (PESI) and Regional Information Center for Science
and Technology. More than 140 papers are accepted for oral as well as poster
presentation and will be published in IEEE Xplore Digital Library. In addition to
the contributed papers, two invited keynote presentations by Prof. Jean-luc
Schanen and by Dr. Lauric Garbuio of Grenoble Alps University will enhance the
event by presenting their deep visions and experiences.
The organizers would like to thank all of the authors, speakers and participants
who will make this conference so interesting and enjoyable. Some special thanks
should also be extended to the session chairs and to the reviewers who gave of
their time to evaluate the record number of submissions on a short period of time.
Finally, it is appropriate that we also thank to our sponsors that will create a more
interactive and technological environment.
We are glad to host you in Shiraz for a few days. Looking forward for an exciting
conference.
Prof. Ebrahim Farjah
Conference Chair
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Conference Schedule
Day 1
:
Tu
esd
ay
12
Feb
ru
ary
2019
Time Place Events
16:00-20:00 Amirkabir Hall Registration
Da
y 2
: W
ed
nesd
ay, 1
3 F
eb
ru
ary 2
01
9
Time Place Events
10:30-9:00 Kharazmi
Hall Opening Ceremony & Registration
10:30-11:00 Kharazmi
Hall Break
12:00-11:00 Kharazmi
Hall Keynote Speech 1 (Dr. Garbuio)
13:30-12:00 Baharan
Restaurant Lunch
Iran Time:
15-13:30
France Time:
11-12:30
Classroom
Building
Ground
Floor
Oral Presentation
Ses
sion A
4
(room
110
)
Ses
sion A
3
(room
108
)
*2
Ses
sion A
(Moay
eri
Hal
l)
Ses
sion A
1
(room
106
)
15:30-15:00
Classroom
Building
Floor st1
Break &
Poster Presentation I
17:00-15:30
Classroom
Building
Ground
Floor
Oral Presentation
Ses
sio
n B
4
(ro
om
10
6)
Ses
sio
n B
3
(ro
om
10
4)
Ses
sio
n B
2
(ro
om
11
0)
Ses
sio
n B
1
(ro
om
10
8)
17:00-18:00 Amirkabir
Hall Panel A: Plagiarism- Awareness and Prevention
18:00-19:30
Shiraz
Metro & Old Districts of
Shiraz
Shiraz Metro Tour and Old Shiraz Sightseeing
*This virtual session will be held simultaneously in Iran and France and four articles of the session will
be presented in France.
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Day 3
: T
hu
rsd
ay,
14 F
ebru
ary
20
19
Time Place Events
10:30-9:00
Classroom
Building
Ground Floor
Oral Presentations
Ses
sio
n C
4
(ro
om
11
0)
Ses
sio
n C
3
(ro
om
10
6)
Ses
sion C
2
(ro
om
10
4)
Ses
sio
n C
1
(ro
om
10
8)
10:30-11:00
Classroom
Building
1st Floor
Break & Poster Presentation II
11:00-12:00 Amirkabir Hall Keynote Speech 2 (Prof. Schanen)
12:00-13:30 Baharan
Restaurant Lunch
13:30-15:00
Classroom
Building
Ground Floor
Oral Presentation S
essi
on D
4
(room
110)
Ses
sion D
3
(room
108)
Ses
sio
n D
2
(room
106)
Ses
sion D
1
(room
104)
15:00-15:30 Kharazmi Hall Break
16:30-15:30 Kharazmi Hall Panel B: Power Electronics Society of Iran (PESI)
16:30-17:30 Kharazmi Hall Closing Ceremony
6
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Organizing Committee
Name Affiliation
Prof. Seyed Mojtaba Zebarjad Honorary Chair
Prof. Ebrahim Farjah General Chair
Dr. Teymoor Ghanbari Technical Chair
Prof. Jafar Milimonfared Past General Chair
Dr. Haidar Samet Workshop Chair
Dr. Mehdi Allahbakhshi Exhibit Chair
Dr. Mohammad Rastegar Organizing Chair
Dr. Farzad Tahami International Publicity Chair
Dr. Davood Arab Khaburi Finance Chair
Dr. Mohammad Mohammadi Sponsorship Chair
Dr. Peyman Setoodeh Student Committee Chair
Dr. Maryam Dehghani Publication Chair
Dr. Mohammad Mardaneh Tutorial Chair
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Technical Committee
Name Affiliation
Dr. Hamid Reza Najafi Birjand University, Iran
Dr. Hamed Nafisi Amir-Kabir University of Technology, Iran
Prof. Taher Niknam Shiraz University of Technology, Iran
Dr. Mohammad Mehdi Arefi Shiraz University, Iran
Dr. Mohammad Mardaneh Shiraz University of Technology, Iran
Dr. Mohsen Hamzeh University of Tehran, Iran
Dr. Maryam Dehghani Shiraz University, Iran
Dr. Mohammad Rastegar Shiraz University, Iran
Dr. S.H. Shahalami University of Guilan, Iran
Dr. Mohammad Hasan Asemani Shiraz University, Iran
Dr. Mahdi Akhbari Shahed University, Iran
Dr. Akbar Rahideh Shiraz University of Technology, Iran
Dr. Mehdi Allahbakhshi Shiraz University, Iran
Prof. Ali Akbar Safavi Shiraz University, Iran
Dr. Majid Zandi Shahid Beheshti University, Iran
Prof. Alireza Seifi Shiraz University, Iran
Dr. Peyman Setoodeh Shiraz University, Iran
Dr. Amirhossein Rajaei Shiraz University of Technology, Iran
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Dr. Mohammad Tavakoli-Bina Khajeh Nasiroddin Toosi University of
Technology, Iran
Dr. Mohammad Mohammadi Shiraz University, Iran
Dr. Kamal Hosseini Suni Ferdowsi University of Mashhad, Iran
Dr. Haidar Samet Shiraz University, Iran
Dr. A. Dastfan Shahrood University, Iran
Prof. Ebrahim Farjah Shiraz University, Iran
Prof. Frede Blaabjerg Aalborg University, Denmark
Prof. M. Cheng Southeast University, China
Prof. Omid Forati Kashani Coburg University, Germany
Dr. Bimal Bose University of Tennessee, USA
Prof. Okyay Kaynak Bogazici University, Turkey
Prof. J. L. Schanen Grenoble Institute of Technology, France
Dr. Hassan Nouri University of the West of England, UK
Dr. Amin Hajizadeh Aalborg University, Denmark
Prof. Muhammad Rashid University of West Florida, USA
Dr. Ali Nabavi University of Toronto, Canada
Dr. Jaeho Choi Chungbuk National University, S. Korea
Dr. Kamal Al-Haddad Ecole de technologie superieure, Canada
Prof. K. Gopakumar Indian Institute of Science, India
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Dr. Yvan Avenas Grenoble Institute of Technology, France
Prof. Josep M. Guerrero Aalborg University, Denmark
Prof. Hamid Toliyat Texas A&M University, USA
Prof. Leo Lorenz Infineon Technologies Munich, Germany
Prof. Jose Rodriguez University Tecnica Federico Santa Maria,
Chile
Dr. Turaj Amraee K.N. Toosi University of Technology, Iran
Prof. Ebrahim Babaei University of Tabriz, Iran
Dr. Davood Arab Khaburi Iran University of Science and Technology,
Iran
Prof. Gevork B. Gharehpatian Amir-Kabir University of Technology, Iran
Prof. Hamid Fathi Amir-Kabir University of Technology, Iran
Dr. MohammadReza Zolghadri Sharif University of Technology, Iran
Prof. Abolfazl Vahedi Iran University of Science and Technology,
Iran
Dr. Alireza Davari Shahid Rajaee Teacher Training University,
Iran
Prof. Sadegh Vaez-Zadeh University of Tehran, Iran
Dr. Farzad Tahami Sharif University of Technology, Iran
Prof. Jawad Faiz University of Tehran, Iran
Prof. Saeed Afsharnia University of Tehran, Iran
Prof. Shahrokh Farhangi University of Tehran, Iran
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Dr. Alireza Siadatan University of Toronto, Canada
Dr. H. Abootorabi-Zarchi Ferdowsi University of Mashhad, Iran
Dr. Ali Akbar Motie Birjandi Shahid Rajaee Teacher Training University,
Iran
Dr. Mohammad Monfared Ferdowsi University of Mashhad, Iran
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Reviewers
Dr. MohammadReza Zolghadri Dr. Farzad Tahami
Prof. Mohammad Tavakoli Bina Dr. Davood Arab Khaburi
Dr. Mohammad Monfared Prof. Ebrahim Babaei
Dr. Mohammad Mardaneh Dr. Akbar Rahideh
Dr. Mehdi Allahbakhshi Dr. Mohammad Rastegar
Prof. Ebrahim Farjah Dr. Teymoor Ghanbari
Dr. Mohsen Hamzeh Dr. Amirhossein Rajaei
Dr. Abolfazl Halvaei Niasar Prof. Mehdi Moallem
Dr. Ali Dastfan Dr. Mostafa Shahnazari
Prof. Jawad Faiz Mr. Alireza Ghaffari
Mr. Ramin Alimardani Prof. Karim Abbaszadeh
Mr. Ehsan Shirzad Mr. AmirAbbas Vahaj
Dr. Saeed Peyghami Dr. Mahdi Asefi
Dr. Omid Shekoofa Dr. Siroos Hemmati
Mr. Ali Nomrehsaz Dr. Shahriyar Kaboli
Dr. Mohammad Mohammadi Dr. Mohammadhassan Ameri
Dr. Hossein IMANEINI Dr. Reza Ghandehari
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Mr. Faddin Dalvand Dr. Vahab Nekoukar
Dr. Farzad Sedaghati Dr. Mohsen Rahimi
Dr. Seyed Hamid Shahalami Dr. Alireza Davari
Dr. Amin Hajizadeh Dr. Mohammad Hejri
Dr. Mahdi Akhbari Dr. Mehran Sabahi
Dr. Mohammad Pichan Dr. Seyyed Abbas Saremi Hasari
Dr. Seyed Mohammad Azimi Dr. Nasim Rashidirad
Dr. Nima Mahdian Dehkordi Dr. Ebrahim Alizadeh
Mr. Ali Sarikhani Dr. Amir Khorsandi
Dr. Ali Akbar Moti Birjandi Dr. Yaser Karimi
Prof. Alireza Siadatan Dr. Mehdi Saradarzadeh
Prof. Gevork Gharehpetian Mr. Shahab Sabzi
Mr. Liu Bochen Prof. Hasan Rastegar
Mahdi Shahparasti Dr. Reza Beiranvand
Dr. Mahdi Azizi Mr. Amir Ommani
Mr. Mohsen Akbari Mr. Adel Nazemi Babadi
Mr. Reza Amjadifard Ms. Faezeh Kardan
Mr. Mohsen Hasan Babayi Nozadian Mr. Mohammadamin Aalami
Dr. Natarajan Prabaharan Dr. Kazem Varesi
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Dr. Sara Laali Mr. Elias Shokati Asl
Dr. Seyed Saeed Fazel Dr. Farzad Mohammadzadeh Shahir
Ms. Zahra Saadatizadeh Dr. Concettina Buccella
Dr. Jaber Falah. Ardashir Dr. Zahra Nasiri-Gheidari
Dr. Peyman Naderi Mr. Mohammad Reza. Mohebbi
Dr. Shahriyar Kaboli Mr. Mostafa Vahedi
Ms. Homa Sheikhi Dr. Abbas Shiri
Mr. Nima Tashakor Dr. Jafar Adabi Firouzjaee
Mr. Mahyar Khosravi
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Keynote Speakers:
(Wednesday,11:00-12:00, Kharazmi Hall)
Dr. Lauric Garbuio
University Grenoble Alpes
"Modeling, Design and Optimization of Dual Brushless
Machines BDFx" (BDFRM: Brushless Doubly-Fed
Reluctance Machine and BDFIM: Brushless Doubly-
Fed Induction Machine).
Abstract:
BDFx is considered an interesting alternative to the Dual Feed Asynchronous Machine (MASDA)
in high power renewable energy systems such as variable speed wind turbines or dams. Like the
MASDA, they allow the use of a reduced power converter with regard to their nominal powers as
well as the reduction of the maintenance costs due to the brushless operation. The presentation
will focus on the particular functioning of the BDFRM and BDFIM as well as their design and
optimization.
Biography:
Lauric GARBUIO received the M.S. degree from Ecole Normale Superieure de Cachan, Paris,
France and the Ph.D. degree in electrical engineering in 2006 from the Institut National
Polytechnique de Toulouse, France. Since 2010, he joined the Electrical Engineering Laboratory
of Grenoble (G2ELab) in France as associated professor. His current research interests include the
conception of new electrical systems (transformers, motors,… ) and new micro-grid solutions
with high penetration rate of renewable energy.
Contact:
University Grenoble Alpes
Telephone: 047-6826430
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(Thursday,11:00-12:00, Amirkabir Hall)
Prof. Jean-Luc Schanen
University Grenoble Alpes
"Predesign method in Power electronics: application to a
wide input and output voltage range Interleaved Buck
Converter"
Abstract:
During the early step of a project development, a huge number of parameters are not decided, and
requirements for power supply are often undefined, and can be negotiated. A large number of
degrees of freedom can be used for designing the power converter, which all impact the final
performance of the whole system, as power density or efficiency. In this preliminary study phase,
with often very short deadlines, it is not possible to perform a full design of the converter to
evaluate all performances, and give a feedback to the system designer about the impact of some
specific choice. Therefore, there is a need of a dedicated design strategy, allowing quickly
obtaining a good idea of the converter performances. This presentation will introduce the concept
of predesign in an imaginary world for power electronics, allowing quick design procedures. The
methodology will be illustrated in details for an aerospace application, the stratobus project, and
verified by experimental measurements.
Biography:
Prof. Jean-Luc Schanen obtained his PHD in January 1994, from University of Grenoble Alps. He
is Professor at Grenoble Institute of Technology since 2003, and is currently leading the Power
Electronics Research group. He is also deputy director of the Engineering School Energy, Water
and Environment.
The research activities of Dr. Schanen are focused on EMC of Power Electronics systems. His
group develops models and tools for Power Converters optimization. Dr. Schanen published more
than 200 papers. He is Senior Member of the IEEE society and involved in many committees of
famous Power Electronics Conferences and Journals.
Contact:
University Grenoble Alpes
Telephone: 047-6826430
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Panel Schedules:
Panel Schedule
Panel Time Place
Panel A: Plagiarism-
Awareness and Prevention
Wednesday, 13 February 2019
17:00-18:00 Amirkabir Hall
Panel B: Power Electronics
Society of Iran (PESI)
Thursday, 14 February 2019
15:30-16:30 Kharazmi Hall
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Articles presentation schedule
Day 1: Wednesday, 13 February
Session A1
Electrical Machines Design
Wednesday, 13 February 13:30 – 15:00, Room 106
Session Chairs: Prof. Babaei, Dr. Allahbakhshi
EA-03-12: paper 1- Design of outer rotor synchronous reluctance motor for scooter application Mohammad Meisam Roohi Sankestani (Islamic Azad University), Alireza Siadatan (University
of Toronto, Islamic Azad University)
Abstract - In this paper, the electric and magnetic design of four models of outer rotor
synchronous reluctance motor with the same number of slot in stator and different number of
pole investigated. After design of 4 motor the parameters of the motors compared to select the
most suitable. The desired parameters are some electrical and magnetic outputs such as flux
density, torque, output power. To calculate the above mentioned, the transient finite element
method has been used. Finally, optimization of selected motor investigated using Taguchi
method.
EA-01-143: Paper 2-
Impact of Stator and Rotor Teeth Parameters on Operation and Characteristics of Flux
Reversal machine Mohammad Amirian (K.N.Toosi University of Technology), Mohammad Ardebili (K.N.Toosi
University of Technology)
Abstract – This paper presents the influence of different physical parameters on flux reversal
machines (FRM) characteristics. Sensitivity analysis have been done on different rotor and
stator parameters and finally an optimization procedure and 2D finite element method(FEM)
have been employed to accomplish and verify the suitable values for the chosen parameters
based on the objective function. The optimized machine have a better characteristic especially
in term of average torque and have lower demagnetization in the magnets.
EA-01-46: paper 3- Comparative Analysis of External-Rotor Permanent Magnet Assisted Synchronous
Reluctance Motor Hadi Aghazadeh (Shahid Beheshti University), Ebrahim Afjei (Shahid Beheshti University),
Alireza Siadatan (University of Toronto, Islamic Azad University)
Abstract - In this paper an effective procedure is employed to evaluate a set of effective rotor
design parameters in an external-rotor permanent magnet assisted synchronous reluctance
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motor (PMaSynRM) and consequently to deal with the geometrically complicated nature of
the rotor design. Inserting permanent magnets bricks into the flux barriers has several merits
which include saturating the iron ribs in the rotor structure, improvement the torque producing
capability and higher power factor. Furthermore, magnetizing inductances along d- and q-axes
are significantly important to concurrently develop high average torque and low torque
pulsation. Hence, sensitivity analysis of the geometric key parameters of an external-rotor
permanent magnet assisted synchronous reluctance motor is carried out. Several finite element
method (FEM) analyses are performed to evaluate the electro-magnetic performance
characteristics of the machine. The analyses results approve the validity of the torque and
power factor relations for the studied PMaSynRM. According to the results the
electromagnetic torque of the PMaSynRM is increased compared to the pure SynRM because
of an additional term as permanent magnet torque, added to the reluctance torque.
EA-01-99: paper 4- Power Density Optimization Through Optimal Selection of PM Properties in a PM-
SyncRM Using FEM Analysis Hamidreza Ghorbani (Islamic Azad University, Najafabad Branch), Behrooz Majidi (Islamic
Azad University, Najafabad Branch)
Abstract- Recent developments in electrical machine industries have made investigators to
explore new topologies of electrical machines including Synchronous Reluctance Machine
(SyncRM). However, well known Permanent Magnet Synchronous Reluctance Machine (PM-
SyncRM) is also introduced in order to magnetically improve the performance of SyncRM.
PMs are placed into rotor flux barriers. Thus, the amount, magnetic direction and material of
PM segments should be optimized based on the operational requirement. In order to enhance
power density of the machine, 2D Finite Element Method (FEM) is applied to six PM layouts
considering three different types of PM materials in two magnetic directions and results are
presented in this paper. Based on the results PM-SyncRM with two NdFeB PMs per pole
aligned with flux direction in rotor shows the overall enhancement in power (torque) density
and torque ripple reduction.
EA-01-171: paper 5- A Novel Quad-Leg Transverse-Flux Permanent Magnet Linear Motor for 3-D Printer
Applications Saman Ahmadi (Amirkabir University of Technology), Mojtaba Mirsalim (Amirkabir
University of Technology)
Abstract – This paper presents a novel quadratic transverse-flux permanent magnet linear
motor (QTFPMLM) with C-core modules and cylindrical PMs for 3-D printer applications.
The motor topology is introduced. Then, the operating principle of the proposed motor is
illustrated and the thrust and cogging torque equations are derived. The 3-D finite element
analysis is adopted to obtain the main magnetic characteristics of the machine in terms of
magnetic flux density distributions, flux linkage, back-EMF, cogging force, and thrust
waveforms. The superiority of the proposed QTFPMLM is proved based on the simulation
results. To this end, a linear transverse flux motor is considered and the results are compared.
It is shown that the proposed motor has lower cogging force, normal force, and thrust ripple,
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which makes this motor a viable candidate for high-speed and accurate applications, especially
3-D printer applications.
EA-01-69: paper 6- Modified Unipolar Hybrid Permanent Magnet Vernier Machine using Halbach Array
Configuration Kambiz Adnani (Amirkabir University of Technology), Sadjad Shafiei (Amirkabir University of
Technology), J. Milimonfared (Amirkabir University of Technology), J. S. moghani (Amirkabir
University of Technology)
Abstract— Utilization of the unipolar Permanent Magnet (PM) strategy in Hybrid Vernier
Machines (HVM) leads to leakage flux reduction. But, its ramification is torque decrease.
Improving the average torque of the unipolar PM HVMs is the main aim of this paper. To do
this, application of the halbach PM array in stator poles is investigated. A conventional
unipolar PM HVM is considered and its stator PMs are replaced by halbach arrays. The
proposed machine is optimized based on sensitivity analysis to minimize the cogging torque
and maximize the first component of Back Electro Motive Force (Back-EMF). Both machines
are evaluated by the time-stepping Finite Element Method (FEM). The results confirm that the
proposed machine has better performance than the conventional PM HVM.
Session A2
Models for Optimization in Power Electronics and Drives
Wednesday, 13 February, Iran Time:13:30 – 15:00, France Time:11-12:30, Moayeri Hall
Session Chairs in Iran: Dr. Tahami, Dr. Setoudeh
Session Chair in France: Dr. Avenas PC-12-120: paper 1-
Axial flux machine design taking into account cooling and convection heat transfer model Yoann Quérel (Univ. Grenoble Alpes, Valeo Powertrain Electric Systems), Lauric Garbuio
(Univ. Grenoble Alpes), Afef Kedous-Lebouc (Univ. Grenoble Alpes), Thomas Boussey (Valeo
Powertrain Electric Systems), Jean-Claude Mipo (Valeo Powertrain Electric Systems), Sophie
Personnaz (Valeo Powertrain Electric Systems)
Abstract – To be used for the hybridization of thermal vehicles electric motor (HEV) has to
respect strict size specification. Thanks to its small axial length, axial flux machine is a good
candidate for this application. A first design of an axial flux machine for HEV is make but
unluckily does not meet specifications. The impact of the current density as well as the heat
transfer through the air gap convection on the performances and size are investigated in order
to reach specifications.
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PC-01-40: paper 2- Enhance-Boost Switched-Capacitor/Inductor QZSI with High Step-up Pulse Width
Modulation Milad Abbasi (Shiraz University of Technology), Mohammad Mardaneh (Shiraz University of
Technology)
Abstract—In this paper, two enhanced boost structures with continuous input current and
discontinuous input current are proposed. Applying two different switched-inductor structures
in conventional continuous input current switched-inductor quasi-Z-source inverter (cSL-
qZSI) can extend the ac output voltage gain of inverters per smaller duty cycle (shoot-
through). Moreover, for the proposed topologies, a new pulse width modulation (PWM)
technique with high boost ability is proposed. Compared to the simple boost PWM control
method achieving higher voltage gain with higher modulation index is the advantage of the
proposed PWM technique. In this paper the governing relations of proposed topologies are
calculated, then to show the correct operation the proposed topologies are simulated in
PSCAD/EMTDC with proposed PWM technique.
PC-10-62: paper 3- Impact of the Number of Phases on the Power Density of a Multiphase Inverter for
Electric Vehicle Drive N. Kesbia (Univ. Grenoble Alpes, VEDECOM Institute), JL. Schanen (Univ. Grenoble Alpes),
L.Garbuio (Univ. Grenoble Alpes), M. Ameziani (VEDECOM Institute)
Abstract—This paper investigates the impact of the number of phases of an inverter used in an
electric vehicle. Multiphase inverters present several advantages for the drives, specifically on
the power electronics side. In the objective of optimizing the power density, a complete study
is presented, investigating the effect of the number of phases for a given power. According to
the gradient-based optimization strategy reminded in this paper, the analysis is carried out in
an "imaginary world", using continuous design variables, such as device area instead of
discrete current rating.
EA-02-18: paper 4- Energy Saving of Evaporative Coolers using Permanent Magnet Brushless Motor Drive
Technology Abolfazl Halvaei Niasar (University of Kashan), Fariborz EshratAbadi (Arman Energy
Company)
Abstract - Evaporative coolers due to their low cost are used in most of the hot and dry regions
of Iran and other countries, and are considered as one of the major consumers of electrical
power. Conventional evaporative coolers use single-phase induction motors (SPIMs)
connected directly to the power grid. But the benefits of these motors are very low, and their
replacement with high efficient electrical motors is considered by various governing
organization. In this paper, the detailFs of using the brushless motor in the application of
evaporative cooler are presented and the requirements and standards for designing the
brushless motor-drive are stated. A 1/2 hp brushless motor-drive are designed and built and it
is tested by a dynamometer equipment. Moreover, a 5000 m3/h evaporative cooler equipped
22
with this brushless motor-drive is tested under the airflow rate experiment. The results
obtained in both tests are compared with the test results of a typical SPIM. The results verify
an increase of at least 60% for energy efficiency compared to evaporative coolers based on
SPIM. Also, the economic considerations of brushless motors and other technical
considerations are discussed.
PC-10-63: paper 5- Optimal Design of an AC Filtering Inductor for a 3-Phase PWM Inverter including
saturation effect A.Voldoire (Univ. Grenoble Alpes), JL. Schanen (Univ. Grenoble Alpes), JP. Ferrieux (Univ.
Grenoble Alpes), C.Gautier (SAFRAN TECH), C. Saber (SAFRAN TECH)
Abstract – This paper introduces an optimization method for the design of the filtering
inductor of a 3-phase inverter. The inductor model takes into account saturation, copper and
iron losses. The optimization method is described, based on a deterministic strategy. Finally,
the optimal design of the inductor is given, focusing on the weight minimization and
considering a volumetric loss density limitation.
EA-02-153: paper 6- Improvement of performances of a switched reluctance machine by adding a floating
switched capacitor Zié Drissa Diarra (Institute of Engineering Univ. Grenoble Alpes), Simon Morel (Institute of
Engineering Univ. Grenoble Alpes), Lauric Garbuio (Institute of Engineering Univ. Grenoble
Alpes), Hervé Chazal (Institute of Engineering Univ. Grenoble Alpes), Laurent Gerbaud
(Institute of Engineering Univ. Grenoble Alpes)
Abstract – Switched reluctance machine has many advantages both in its simple structure and
the wide speed range at which it can operate. Nerveless, one of its main flaws is its poor power
factor especially in high speed, which leads to over-sizing of the power supply. The purpose of
this article is to show the impact of an electronic impedance based on a “Floating Switched
Capacitor (FSC)” on the performance of a switched reluctance machine (SRM) controlled via a
voltage inverter. Time simulations carried out withTMPsim software show that by associating
this device with the machine, the dynamics of growth and decay of the magnetizing current is
improved, which in other words improves the power factor. Thus, the machine is able to
provide more torque on all of its operating points.
23
Session A3
Stand-alone Converters
Wednesday, 13 February 13:30 – 15:00, Room 108
Session Chairs: Dr. Mohammadi, Dr. Arabkhaburi
PC-09-135: paper 1- Boost type Partial Power Z-Source Converter Ali Nabinejad (Shiraz University of Technology), Shahin Honarmand (Shiraz University of
Technology), Amirhossein Rajaei (Shiraz University of Technology), Mohammad Mardaneh
(Shiraz University of Technology)
Abstract—A modified structure of Z-Source converter as partial power processing (PPP) Z-
Source converter is presented which is practically applicable for distributed energy systems
such as photovoltaic (PV) systems. With a similar approach the proposed converter is different
from basic PPP structure of Z-source converter. Improved efficiency, voltage gain, significantly
reduced voltage stress and power rating are the proposed converter advantages. The operation
principles of the converter is explained and the equations are derived. Also the proposed
converter is compared to full power Z-source and basic PPP Z-source converter in terms of
efficiency, power loss, voltage gain and voltage/current stresses. The simulation results are
presented to verify the theoretical analysis. A laboratory prototype of the proposed converter is
made and the results are compared to simulation results.
PC-09-179: paper 2-
Neural Network based Maximum Power Point Tracking Technique for PV Arrays in
Mobile Applications Sara Allahabadi (University of Tehran), Hossein Iman-Eini (University of Tehran), Shahrokh
Farhangi (University of Tehran)
Abstract. – Maximum power point tracking (MPPT) of photovoltaic (PV) arrays is an essential
concern to enhance the efficiency of the whole PV system. Under partially shaded condi-tions
(PSC) that all modules do not receive uniform illumination, the tracking turns out to be
challenging, due to the output power-voltage characteristic of the PV array exhibits multiple
peaks. In mobile applications PSC becomes more troublesome since the partial shading patterns
change very fast. Therefore, the tracking of the MPP should be quick and precise. In this paper
a two-stage MPPT Method that combines Artificial Neural Net¬work (ANN) and Hill Climbing
(HC) is presented. In the first stage an ANN estimates the vicinity of the MPP and in the
second stage HC is performed to obtain the exact MPP. The approach is very fast which makes
it suitable for mobile applica-tions and is able to extract maximum power under uniform
irradiation and PSC. The validity of the proposed method is investigated by simulations in
MATLAB/Simulink environ¬ment. The simulation results show that the proposed method
provides a quick and accurate tracking.
24
PC-09-170: paper 3- Controller Design for a Wind Turbine-Based Variable Speed Permanent Magnet
Synchronous Generator Using Quasi-Z-Source Inverter in Stand-Alone Operation
Mehran Moslehi Bajestan (University of Birjand), Hamed Madadi (Islamic Azad University,
Neyshabur Branch), Mohammad Ali Shamsinejad (University of Birjand)
Abstract - This paper proposes a new variable speed permanent magnet synchronous generator
(PMSG)-based three-phase stand-alone wind energy conversion system (SWECS) which uses
quasi-Z-source inverter (qZSI) with battery as interface between the PMSG and the load. In
order to better maintaining the active power balance and stability of the dc-link voltage during
over-generation condition of the SWECS, a dump load is used in the proposed system. The
proposed control system is able to provide an uninterrupted and reliable supply to sensitive
loads under variable power generation of the SWECS and sudden changes in the load demand.
Moreover, the maximum wind power capturing and delivering this power to the load is
considered in the proposed control system. The simulation results validate proper operation and
performance of the proposed SWECS.
PC-08-190: paper 4- A Transformerless Quadratic Buck-Boost Converter Suitable for Renewable Applications Hossein Gholizadeh (Shahid Beheshti university), Ali Sarikhani (Shahid Beheshti university),
Mohsen Hamzeh (University of Tehran)
Abstract— This paper introduces a buck-boost converter with positive output voltage.
Compared to conventional buck-boost converter, the voltage gain of the introduced converter is
squared times of the conventional one. Broad span of the output voltage is one of the
advantages of the introduced converter. The input current of the proposed converter is
continuous, which makes this type of converters convenient for renewable energy sources.
Continuous output current is another advantage of introduced converter, which decreases the
current stress on the load terminal capacitor. Principle operations and steady state analysis are
done in continuous current mode. Finally, the implementation of the introduced converter is
evaluated through simulation results.
PC-08-192: paper 5- DTC based BLDC Motor Controlled Centrifugal Pump Fed by PI-SMC-BFO Tuning
Strategy for Buck-Boost Converter in Solar PV Array Water Pumping System
Ghasem Shokri Garjan (University of Tabriz), Elahe Naderi Najafabadi (University of
Mohaghegh Ardabili), Mohsen Najafpour (Islamic Azad University of Ardebil)
Abstract- In this paper, the performance of the directly coupled solar photovoltaic water
pumping system has been monitored at different conditions of solar irradiance values, ambient
temperature and speed. A permanent magnet brushless DC (BLDC) motor is employed to drive
a centrifugal pump coupled to its shaft due to merits of high efficiency and compact size of this
drive. This system utilizes a Buck-Boost converter as an intermediate DC-DC converter
between the solar photovoltaic (SPV) array and the voltage source inverter of BLDC motor
drive. This converter operated in continuous conduction mode (CCM) and facilitates low
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ripples and higher power rating operation of proposed system configuration by bacterial
foraging optimization (BFO) based PI-SMC control algorithm. Moreover, the application of
direct torque control (DTC) strategy to BLDC drives has been investigated. In this control
method for BLDC drive, direct control of stator flux and electromagnetic torque, and attainment
rapid torque response and the high efficiency is possible by choosing the efficient modes of
switching inverter to confine flux and torque error in a proper hysteresis band. MATLAB/
Simulink based Sim-power-system toolbox is used to analysis, design and control of this system
and demonstrate the performance of transient, dynamic and steady state response of SPV array
powered Buck-Boost converter fed BLDC driven water pumping system. Simulated results are
presented, and it is shown that, compared with conventional current control, the proposed
strategy results in reduced torque ripple, robust performance, faster dynamic response and
lower steady state error under different mode operation.
Session A4
DC-DC Converters I
Wednesday, 13 February 13:30 – 15:00, Room 110
Session Chairs: Prof. Tavakolibina, Prof. Farkhadov
PC-07-146: paper 1- Evaluation and Comparison of Conducted EMI in Three Full Bridge DC-DC Switching
Converters Mohammad Rouhollah Yazdani (Khorasgan (Isfahan) Branch, Islamic Azad University), Mohammad Farzanehfard (Khorasgan (Isfahan) Branch, Islamic Azad University)
Abstract - Switching power supplies is one of the major causes of electromagnetic interference in
electronic devices due to the fast transient of voltages and currents. Full bridge switching
converters are commonly used for medium and high power application. High electromagnetic
interference takes place due to the large number of active elements in full bridge converter. Soft
switching methods are able to reduce EMI in power converters. In this paper, the effect of the use
of the phase shift control and also use a resonant series schemes to implement soft switching
conditions in the full bridge converter is investigated from EMI viewpoint. The modeling of
conducted EMI in phase shifted full bridge converter, series resonant full bridge converter and
conventional hard switching full bridge converter are presented and compared using CST studio
software. The modeling results indicate that the series resonant full bridge converter has a better
performance than the phase shifted full bridge switching converter from EMI viewpoint.
26
PC-01-76: paper 2- New Non-Isolated High Voltage Gain Single-Switch DC-DC Converter Based on Voltage-
Lift Technique Farhad Abbasi Aghdam Meinagh (University of Tabriz), Vida Ranjbarizad (University of Tabriz),
Ebrahim Babaei (University of Tabriz)
Abstract—In this paper, a new non-isolated high voltage gain single-switch DC-DC converter
using a combination of the voltage-lift technique and the switched-capacitor network is proposed
with wide variation range for the duty cycle. The proposed DC-DC converter has one switch and
a low number of elements in its topology. Moreover, the proposed converter can achieve high
voltage gains with the low voltage stress for its semiconductors and capacitors. In this paper, the
steady-state analysis and related equations are given. Finally, the simulation results in
PSCAD/EMTDC software are given to validate the theoretical analysis.
PC-01-109: paper 3-
A New Two-Input and Multi-Output Interleaved DC_DC Boost Converter for Satellites
Power System Jafar Gholami Gorji (K. N. Toosi University of Technology), K. Abbaszadeh (K. N. Toosi
University of Technology), Farhad Bagheroskouei (Satellite research institute)
Abstract— a new two-input and multi-output Interleaved DC-DC boost converter is proposed.
This converter is a high Gain and Non-isolated boost converter which can be used in satellites
power system. This converter has several dc links with different gains in the output to feed other
satellite subsystems. This converter is an interleaved boost converter, so it performs better than
the conventional converters. The main tasks of this converter in the subsystem of satellite energy
supply are maximum power points tracking (MPPT), battery charging and line dc voltage
regulation. Normally, three separate converters are required to provide these tasks. By increasing
the power electronic devices, the volume and weight of the satellite will go up. This is not
desirable, therefore, must use a comprehensive circuit to perform the three above tasks at the
same time. The proposed converter has an integrated structure with only four switches that
controlled by different duty cycles. Also this converter has a uni-directional input for connecting
the solar array and a bi-directional input for connecting the battery. Based on charging or
discharging state of the battery, three operation modes are defined for this converter. One of the
prominent features of the proposed converter is the battery bases grounded, so the noise cannot
damage the battery and so on increase the useful life of battery. Theoretical analysis of the
proposed converter is verified by simulation results for different operation conditions.
PC-01-59: paper 4-
A New High-Step-Up DC-DC Converter using Three-Windings Transformer and Soft-
Switching for use in Photovoltaic Systems Ali Farzin (University of Guilan), Mohammad Etemadi (Technical and Vocational University),
Alfred Baghramian (University of Guilan)
Abstract - In this paper, a new High-Step-Up DC-DC Converter is introduced for application in
PV systems. The provided topology includes a boost converter using coupled inductors to
increase the voltage gain. It has advantages such as continuous input current, high efficiency, the
27
use of three-windings coupled inductors for raising the voltage gain, the use of soft-switching
method to reduce the losses on the diodes and reduce voltage stress on the switch, as well as
eliminate the problem of reverse recovery diodes. The only switch on this Converter is switched
under Zero-Current-Switching (ZCS), and also, all the diodes are switched on and off under Zero-
Current-Switching. The voltage stress on the switch and all the diodes is much lower than the
output voltage, and this makes the efficiency of this converter higher than 95%.
PC-01-110: paper 5-
A Soft-Switched High Step-Up DC-DC Converter Using Voltage Multiplier Cells Hossein Ghaffarpour Sadighi (Shahid Beheshti University), S.E. Afjei (Shahid Beheshti
University), A. Salemnia (Shahid Beheshti University)
Abstract - In this paper, a soft-switched dc–dc converter using voltage multiplier cells is
proposed. This proposed converter employs two clamp switches which help not only clamp the
voltage spikes caused by parasitic inductance but also achieve ZVS turn ON of switches and ZCS
turn OFF of diodes. The proposed converter is compared to some high step-up converters. The
simulation results are used to verify the performance and validity. The efficiency of proposed
converter was calculated as 98.95% for 500 W output load.
PC-01-64: paper 6- Design of a High Efficiency and High Voltage Gain Extendable Non-Isolated Boost DC-DC
Converter Farid Mohammadi (Amirkabir University of Technology (Tehran Polytechnic)), Hassan Rastegar
(Amirkabir University of Technology (Tehran Polytechnic)), Amir Khorsandi (Amirkabir
University of Technology (Tehran Polytechnic)), Mohammad Farhadi-Kangarlu (Urmia
University), Mohammad Pichan (Arak University of Technology)
Abstract - Boosting the low voltage output of renewable sources to the utility voltage state is one
of the important issue in the renewable applications. The step-up DC-DC converters are widely
used in these systems to attain the utility voltage. The benchmarking of the converters mainly in
terms of the voltage gain, efficiency, the number of active and passive components, the voltage
stress on semiconductors, and simplicity is considered. In this paper, a new extendable non-
isolated boost DC-DC converter is presented. Comparing the conventional boost converter, the
basic structure of the proposed converter has the high voltage gain and reduced stress on the
switch. In order to increase the voltage gain, the basic structure of the proposed converter can be
easily extended. The detailed analysis of the proposed converter in continuous current mode
(CCM) is presented. To verify theoretical concepts, the simulation results are carried out using
the MATLAB/SIMULINK.
28
Poster Presentation I
Floor st1 -15:30, Classroom Building –Wednesday, 13 February 15:00
Chairs: Prof. Khayatian, Dr. Asemani EA-04-86: paper 1-
Real-Time Bearing Fault Diagnosis of Induction Motors with Accelerated Deep Learning
Approach
Shahabodin Afrasiabi (University of Shiraz), Mousa Afrasiabi (University of Shiraz), Benyamin
Parang (University of Shiraz), Mohammad Mohammadi (University of Shiraz)
Abstract – This paper proposes a fast and accurate deep neural network based bearing fault
detection of induction motors. An approach to accelerate and compress convolutional neural
networks (CNN) is the basis of the proposed method. As the main advantages, the proposed
algorithm is 1) directly applicable to raw data, 2) highly accurate, 3) non-time consuming, 4)
applicable to different types of electric machines, 5) merges feature extraction and detection
into a single machine learning, and 6) reduces computational burden of conventional CNN. To
address and verify the proposed method, the experimental dataset of Case Western Reserve
University (CWRU) bearing data center is used. The results show that, the proposed method is
not only capable of diagnosing with high precision, but also has superiority over conventional
CNN as deep-based structure method and support vector machine (SVM), artificial neural
network (ANN), and learning vector quantization (LVQ) as shallow-based structure methods.
EA-02-77: paper 2-
Robust Maximum Torque per Ampere Strategy for Permanent Magnet Synchronous
Motor Based on PI-Sliding Mode Controller
Mohammad Eydi (Ferdowsi University of Mashhad), Mojtaba Ayaz Khoshhava (Ferdowsi
University of Mashhad), Hossein Abootorabi Zarchi (Ferdowsi University of Mashhad)
Abstract - Since the applications of Permanent Magnet Synchronous Machines (PMSMs) are
developing in various industries, stator loss minimization in these machines is significantly
important. In this regard, the d and q axis currents should be controlled where the load torque is
provided with minimum stator current. This paper proposes a novel Maximum Torque per
Ampere (MTPA) strategy for PMSMs based on a PI-Sliding Mode Controller (SMC)
considering machine parameter variations. In the proposed drive system, the speed is controlled
by the q axis current. Moreover, the d axis current is controlled via a two layer controller. In
the first layer of the proposed controller, the minimum stator current is determined based on the
machine nominal parameters through a PI-SMC. With due attention to the machine parameters
are varied, the minimum stator current is not precise. Hence, the second layer controller is
applied in order to shift the operation point to the correct minimum current point.
Consequently, the load torque is precisely provided with minimum stator current followed by
the absence of any steady-state torque and speed ripples. The proposed control scheme is
simulated in MATLAB/Simulink environment. Simulation results validate the performance of
the proposed control system.
29
PC-05-51: paper 3- Two-Stage Input-Output Feedback linearization controller for AC-AC converter based
SST
Hamzeh Beiranvand (Lorestan University), Esmaeel Rokrok (Lorestan University), Hakan
Acikgoz (Kilis 7 Aralik University), Marco Liserre (Christian-Albrechts-Universität zü Kiel)
Abstract - Classical transformers are the most important constituent of the power system and
act as a passive interface between high voltage and low voltage systems. They have
undesirable characteristics such as poor voltage regulation, large size/weight, sensitivity to
harmonics, and poor power flow control. Solid-state Transformers (SSTs), are an emerging
power electronics-based technology, sought to replace classical transformers after a century.
SSTs are equivalent to a classical transformer with embedded desired functionalities. In this
paper, three-phase AC-AC converter with capacitor at the DC-link is employed as power
electronic interface in MV and LV side of the SST. Input-output feedback linearization (IOFL)
controller is used to control the AC-AC based SST in two stages for controlling the external
and internal states. AC-AC SST is linearized by the input-output feedback linearization
technique where an internal dynamic is observed. IOFL is used to control the internal dynamics
and second stage of the controller in the outer loop. Simulation results are presented to show
the applicability of the proposed nonlinear controller and the control method.
EA-02-207: paper 4-
A Novel Double Carrier PWM Modulation for Sensorless Control of Permanent Magnet
Synchronous Motors
Hossein Hosseinyar (Sharif University of Technology), Siamak Karimi (Sharif University of
Technology), Farzad Tahami (Sharif University of Technology)
Abstract – Control of Synchronous Motors at low speed has been the topic of several studies
for the last years. Due to the lower amplitude of Back-EMF voltage in lower speed, it is
inappropriate to merely rely on induced voltages for position estimation. In this paper, a new
double carrier PWM modulation is presented in which two carrier frequencies are utilized for
two legs of the inverter. This proposed method rectifies the need of powerful processors which
decreases the cost of the electric drive system. Employing a non-linear control system and an
automatic gain control, ensures the sensorless control of the motor for a wide range of speed.
EA-01-47: paper 5- Analysis of Different Rotor and Stator Structures in Order to Optimize Two-Phase
Switch Reluctance Motor Torque Characteristics
Arash allahyari, Sadra Mousavi, Daryoush Nazarpour
Abstract— This paper proposes different structures of stator and rotor for 4/2 switch reluctance
motor in order to maximize the torque and minimize the dead zone. Different designs for
optimization are introduced. Parametric analysis of the variables for the aforementioned
purposes conducted utilizing finite element method. Firstly, a conventional 4/2 switch
reluctance is simulated utilizing finite element method (FEM). Secondly, different rotor and
stator structures such as a four-step axial rotor, radial stepper rotor, stator pole manipulation
and mixed structures of the rotor and stator are investigated in order to maximize torque and
30
minimize the dead zone. Finally, a comparison between main design factors for a 4/2 switch
reluctance motor is introduced according to the results.
EA-01-11: paper 6-
Modeling and Analysis of a Modular Hybrid-Excited Reluctance Motor for High-Torque
Applications
Milad Alizadeh (Islamic Azad University, Najafabad Branch), Amir Baktash (Islamic Azad
University, Najafabad Branch)
Abstract—The main objective of this paper is to present a modular hybrid reluctance motor
(MHRM) for high-torque drive systems. The main dimensions and parameters of the structure
are presented. In order to obtain the main characteristics of the proposed HRM, 2-D finite
element analysis (FEA) is adopted. The flux distributions at the aligned and unaligned
positions, flux linkage, and static torque curves of the proposed topology are provided. In
addition, the magnetic circuit model (MCM) of the proposed motor is derived, the reluctances
of the machine are calculated, and the static characteristics obtained from the MCM are
compared with those of FEA. The results are indicative of the fact that there is a good
agreement between the results of the FEA and MCM. Finally, it is shown that the proposed
HRM produces higher torque than the conventional SRM.
EA-01-10: paper 7-
Non-linear Modeling of a Multi-Layer Switched Reluctance Motor with Magnetically-
Disconnected Stator Modules
Mohammad Amin Jalali Kondelaji (Amirkabir University of Technology), Mojtaba Mirsalim
(Amirkabir University of Technology)
Abstract— Analytical modelings are not only rapid tools for the analysis of electrical
machines, but also are precise enough compared to numerical methods. On the other hand,
switched reluctance machines have nonlinear magnetic characteristics and doubly salient
structure. Due to these features, finite element analysis (FEA) is often applied to obtain the
main characteristics of the machine which is time-consuming. In this paper, an improved non-
linear magnetic equivalent circuit (NLMEC) for a fault-tolerant modular switched reluctance
motor with three layers of C-core stators is developed to obtain the main characteristics of the
machine. To clarify the accuracy of the model, a 3D finite element analysis is adopted, and the
results are compared with analytical solutions. Thanks to FEA, it is shown that the results
obtained from the proposed model are accurate enough in comparison with those issued from
FEA. It is also illustrated that this method saves a large time compared to FEA, which is a
valuable factor for preliminary design stages.
31
EA-01-174: paper 8- Novel E-Core Double-Stator Two Phase Switched Reluctance Motor with Segmental
Rotor
Maryam Abdollahi (Amirkabir University of Technology), Mojtaba Mirsalim (Amirkabir
University of Technology)
Abstract – The main contribution of this paper is to present a novel double-stator switched
reluctance motor (DSSRM) with E-core stators and segmental rotor for high-torque
applications. Firstly, the structure is introduced and the simple magnetic circuit model and
operating principle are illustrated. In order to obtain the main magnetic characteristics of the
proposed motor, 2-D finite element analysis is employed and the simulation results in terms of
flux lines, torque, and flux linkage curves are obtained. Also, the advantages of the proposed
motor are proved. To this end, an E-core single-stator SRM (SSSRM) is considered with the
same dimensions and parameters. The comparative results show that the proposed DSSRM has
higher torque than the single-stator SRM with the same current.
EA-01-158: paper 9- Comprehensive Research on a Modular-Stator Linear Switched Reluctance Motor with a
Toroidally Wound Mover for Elevator Applications
Matin Vatani (Amirkabir University of Technology), Mojtaba Mirsalim (Amirkabir University
of Technology)
Abstract – This paper presents a novel modular-stator linear switched reluctance motor
(MSLSRM) for elevator applications. The topology and its operating principle is illustrated and
the magnetic equivalent circuit is derived for the aligned position. In order to obtain the
electromagnetic characteristics of the motor, 2-D and 3-D finite element analyses are
employed. The static inductance and force profiles are obtained and the flux density
distributions are given. Also, the dynamic performance of the proposed motor is performed. To
prove the advantages of the proposed motor, a fair comparison is done. To this end, two linear
motors are considered and the static performance and dynamic waveforms of the three motors
are compared. It is illustrated that the proposed motor has higher average force and lower force
ripple compared to the considered SRMs.
EA-01-17: paper 10- Design and Analysis of Radial-Flux Hybrid Excitation Eddy Current Brake
Reza Yazdanpanah (University of Larestan)
Abstract— This paper presents a design approach and performance analysis for a radial-flux
hybrid excitation eddy current brake. In this study, the brake design is done using magnetic
equivalent circuit and the induced eddy current, and the generated braking torque are calculated
using numerical methods. Also, the effects of two important parameters on the brake
characteristic are investigated.
32
EA-01-26: paper 11- Sensitivity Analysis of Rotor Geometry for External-Rotor Synchronous Reluctance
Motor Using Finite Element Method
Hamid Hefaz (Science and Research Branch, Islamic Azad University), Ebrahim Afjei (Shahid
Beheshti University), Masoud Ardestani (Semnan University)
Abstract—Design complexity of the rotor structure in synchronous reluctance machine has
been one of the major challenges for decades. In this paper, a sensitivity analysis of the rotor
geometry parameters of a 6-pole external-rotor synchronous reluctance motor is carried out.
The d-axis and q-axis inductances are of significant importance to simultaneously achieve
maximum developed torque and low torque ripple. Several magnetically accurate Finite
element analyses are conducted to characterize the electromagnetic performance of the motor.
The analyses confirm the validity of the torque and power factor equations for the proposed
external-rotor synchronous reluctance motor.
EA-01-67: paper 12-
Multi-objective Optimization of an Outer Rotor BLDC Motor Based on Taguchi Method
for Propulsion Applications
Akbar Mohammadi Ajamloo (K.N. Toosi University of Technology), Aghil Ghaheri (Shahid
Beheshti University), Ebrahim Afjei (Shahid Beheshti University)
Abstract— Brushless DC (BLDC) motors are well-known as a type of motors with high power
to weight ratio and high efficiency. These characteristics enable BLDC motors to be used in
propulsion application. The propulsion systems require light weight, high power motors with
Low operational noise and cogging torque, which signifies the need of multi objective
optimization of the motor in this application. In this paper, the design process of BLDC motors
is explained and a BLDC motor is proposed. Then the motor is optimized based on Taguchi
design of experiments to achieve a lightweight, high power density and low noise motor. The
process is also studied with Analysis of Variance (ANOVA). To validate the optimization
results, the final motor is simulated with the Finite Element Method (FEM) and compared to
the initial design.
EA-01-134: paper 13-
A new method to model damper windings in the salient pole synchronous machine
Siroos Hemmati (Kermanshah University of Technology), Seyed Amin Saeid (Azad University
of Yazd)
Abstract - In this paper, a new winding function for damper bars is proposed. The damper bars
in a salient pole synchronous machine (SPSM) are shorted together and different currents can
clearly flow in each of the shorted bars and the problem to be solved seems to defy analysis by
use of the winding function technique. However, in this paper it will be shown that the winding
function can still be identified. Using this winding function for the damper bars, machine
inductances are computed. The Finite Element Method (FEM) is used to verify the accuracy of
the proposed model.
33
PC-10-133: paper 14-
Integrated Control Strategies for Current Ripple Reduction and Enhancing Performance
in Non-Inverting Interleaved DC-DC Converter
Mohsen Karimi (Iranian research institute for electrical engineering), Mohammad Pichan
(Arak University of Technology), Mehdi Sadri (Iranian research institute for electrical
engineering), Mohsen Ghorbanali Afjeh (Iranian research institute for electrical engineering)
Abstract— This paper proposes an integrated control method (ICM) for non-inverting
interleaved DC-DC converter. Conventionally, the typical DC-DC converter is not seen as
suitable dynamic solution for high power density of converter. Because, by increasing the
power of converter the value of element is must be increased, proportionally. increased value
of hardware element of converter. Then, since large parameter value will increase the losses
element and current ripple especially. In order to maintain the dynamic performance and
accessibility to achieve high power of converter the non-inverting interleaved DC-DC(INDC)
converter with integrated control method is proposed. The proposed ICM is designed based on
the integrated dynamic modeling of continuous conduction mode (CCM), discontinuous
conduction mode (DCM). As a result, the integrated control method is synchronized the
parallel modes operations which provided balancing currents among the stages. Moreover, the
proposed controller can provide fast dynamic response, reduce the total current ripple and
accurately regulation output voltage from variation DC source. Finally, to evaluate of the
proposed method, the NIDC converter of 30kW test bench is provided and the controllers
method based on DSP TMS320F28335 is implemented.
PC-10-89: paper 15- Sliding Mode Controller (SMC) For Sinusoidal Ripple Current (SRC) Charge of Li-ion
Battery
Hossein Hajisadeghian (Shahid Rajaee Teacher Training University), Ali A. Motie Birjandi
(Shahid Rajaee Teacher Training University), Ramin Nahavandi (Arak University of
Technology)
Abstract – In this paper, a Sliding Mode Controller (SMC) has been proposed to control the
Sinusoidal Ripple Current (SRC) charge of the Li-ion batteries. Because current's frequency is
variable in SRC charge method, conventional PI controller fails to track reference current. As
SMC controller is a model base controller and is designed based on state space equations of the
battery and battery charger, it does not have drawbacks of linear controllers. In order to design
the controller, a full bridge DC/DC converter has been used as a battery charger and the
resistive model of the battery have been used to build state space equations of the system. Also
because the designed controller rule is function of transformer leakage and output filter
inductances of full bridge DC/DC converter, 30% uncertainty for these parameters have been
taken into account. Simulation results carried out with Simulink/MATLAB software shows the
performance of the proposed controller compared to conventional PI controller.
34
PC-04-14: paper 16- THD Minimization in a Five-Phase Five-Level VSI Using a Novel SVPWM Technique
Mohammad Bayati Booin (Electrogen Company), Mohsen Cheraghi (Electrogen Company)
Abstract—In the last decade, multiphase motors have been extensively used due to
development of power electronic converters and reduction of total prices. The advantages of
multiphase motors can be mentioned as less torque ripple, high power density, high efficiency
and better reliability at the moment a phase is cut off. Harmonic is one of the most important
issues in designing electronic power converters, and its reduction significantly improves
efficiency, load performance and reduces electromagnetic disturbances. One of the most
widely used method for decreasing harmonic contents of such inverters is using multilevel
techniques. Until now, different switching algorithms are presented to diminish low-order
harmonics and total harmonic distortion (THD). Hence, in this paper, a novel space vector
pulse width modulation (SVPWM switching technique) is presented in a five-phase voltage
source inverter (VSI in order to reduce THD and low-order harmonics with fundamental
voltage amplitude fixation). Subspace election for determination of switching time is based on
smallest triangle which is surrounding the reference vector vertex. In this method, the zero
vectors will be eliminated in large amplitude modulation index. Genetic algorithm (GA) is
utilized in optimization process to find the best applying time sequence in switching pattern for
minimizing THD and switching losses. Simulation results are also provided for verification of
proposed algorithm.
PC-06-149: paper 17-
Identification of Iron Powder B-H Characteristics Considering Impurities in the
magnetic material
Hossein Azizi Moghaddam (Niroo Research Institute(NRI)), Farshid Mahmouditabar (Iran
University of Science and Technology), Ali Haghi (Niroo Research Institute(NRI))
Abstract— the iron powder magnetic material has widespread applications in engineering. So
appropriate measuring characteristics of this material especially B-H curve is essential in the
design procedure of the inductor used in power electronics. One of the standard frames for
measuring the magnetic characteristics of the iron powder is the toroid core. The accuracy of
measuring the magnetic characteristics of the toroid core is affected by various uncertainties.
One of this uncertainties is the non-uniform distribution of magnetic field in the surface of the
core. This issue in presence of impurity and non-uniform distribution in core compounds can
leads to the error in measuring the hysteresis loop and core losses. In this paper first, the
analytical design of the dimension of the toroid core based on IEC Standard 60404-6 has
carried out then the Finite Element Method (FEM) and Simulink model are used to confirm the
analytical design. Furthermore, the designed toroid frame is manufactured and the result
compared to each other. Eventually, the issues of impurity and non-uniform magnetic field
distribution on the toroid core are investigated.
35
PC-01-103: paper 18-
A New High Gain DC-DC Boost Converter with Continuous Input and Output Current
Mohammad Eydi (Ferdowsi University of Mashhad), Seyed Hossein Hosseini (Ferdowsi
University of Mashhad), Reza Ghazi (Ferdowsi University of Mashhad)
Abstract –The fundamental DC-DC boost converter has the drawbacks of low voltage gain
ratio followed by discontinuous output current. May the reverse recovery problem rises as a
disaster for the output diode along with harming the power switch. Also the stress of voltage is
significantly high in respect with the output voltage. Therefore, a novel high gain non-isolated
DC-DC boost converter is proposed in this paper. In this converter a high voltage gain is
achieved with continuous power in the input and the output. The voltage stresses across the
semiconductors are all less than that of fundamental boost converter in respect with the output
voltage. Only a single power switch is controlled by PWM which leads to simplicity and cost
reduction. The proposed converter is suitable for PV panels because of its continuous input
current. Furthermore, as the output current is also continuous this makes it a suitable choice for
fuel cells. Simulations are provided in MATLAB Simulink to verify the extracted theoretical
equations from the proposed converter.
PC-04-154: paper 19-
A New Real-Time Implementation of Level Shifted-PWM Method for a Three Phase 5-
Level NPC Inverter
Reza Kheirollahi (Tarbiat Modares University), Mustafa Mohamadian (Tarbiat Modares
University), Farzad Golshan (Iran University of Science and Technology), Ehsan
Dehghanpour (McGill University)
Abstract – This paper presents a novel DSP-FPGA based real-time implementation of Level-
Shifted Pulse Width Modulation (LS-PWM) method for a 5-level NPC inverter. In this brief,
by proposing a new communication architecture between a DSP and a FPGA, data transfer bus
between the two devices is completely removed. The presented method benefits from simple
conceptual strategy, compact design, reduced cost, and high pulse resolution. Simulation and
experimental results prove the correctness and practical feasibility of the proposed approach.
PC-04-98: paper 20-
A Single Phase Boost Switched-Capacitor Multilevel Inverter Topology
Abbas Mahdavi (Islamic Azad University), K. Abbaszadeh (K.N. Toosi University of
Technology), Mohammad Hatami Abbasi (Islamic Azad University)
Abstract - In this paper a single phase switched-capacitor inverter is presented which generates
the nine-level output with two DC sources. Compared to the other multilevel inverters (MLIs),
the proposed inverter can reduce the circuit components such as power switches, diodes and
capacitors which this feature leads to increase in efficiency of the inverter and decreases the
switching and conduction losses. Moreover, this topology has the ability to voltage boosting.
Another advantage of the proposed inverter is the capacitor's voltage balancing in each cycle
that means no need to auxiliary circuits to keep balance the capacitors. Therefore the size,
weight, cost of the inverter and complexity of the control strategy is reduced.
36
PC-04-87: paper 21-
Cascaded Multilevel Inverter Using Quasi Resonant Switched Capacitor Units
Shahin Sabour (Urmia University), Daryoush Nazarpour (Urmia University), Sajjad
Golshannavaz (Urmia University), Reza Choupan (Urmia University)
Abstract— In this paper, two new topologies are proposed for multilevel inverters. The
proposed topologies consist of a combination of the conventional H-bridge and the quasi-
resonant switched capacitor inverter units. The proposed topologies reduce the number of
switches and isolated dc voltage sources, size and cost of the system in comparison with the
conventional topologies. In addition, the proposed topologies can increase the input voltage
without a transformer. The input voltage is divided averagely by the series-connected
capacitors in proposed topologies, and any voltage level can be obtained by increasing the
basic unit. Fundamental frequency modulation is preferred when considering the switching
frequency and the resulting loss. The quasi-resonance technique is utilized to suppress the
current spikes that emerge from the instantaneous parallel connection of the series-connected
capacitors and the input source, decreasing the capacitance, increasing their lifetimes, and
reducing the electromagnetic interference, simultaneously. The simulation results of single-
phase 13-level and 17-level inverters are given to prove the correct operation of the proposed
topologies.
PC-01-93: paper 22-
A High-Efficiency Non-Isolated High-Gain Interleaved DC-DC Converter with Reduced
Voltage Stress on Devices
Farzad Sedaghati (University of Mohaghegh Ardabili), Mahmoodreza Eskandarpour Azizkandi
(University of Mohaghegh Ardabili), Seyed Hadi Latifi Majareh (University of Mohaghegh
Ardabili), Hossein Shayeghi (University of Mohaghegh Ardabili)
Abstract - This paper proposes a new high-efficiency, non-isolated, interleaved DC-DC
converter. The suggested structure consists of two interleaved modified step-up KY converters,
to obtain a high conversion ratio without the use of coupled inductors. The presented converter
has a higher voltage gain than conventional interleaved boost, buck-boost, CUK, ZETA and
SEPIC converters, and high voltage gain can be obtained with a suitable duty cycle. Voltage
stress of the power switches and diodes is low. Therefore, switches with low on-state resistance
and low conduction losses can be used to improve efficiency. Moreover, with the utilization of
interleaving techniques the input current ripple in the proposed converter is reduced. The
operating principles and steady-state analysis of the proposed converter are discussed in this
paper. Finally, in order to verify theoretical analysis and performance of the proposed
converter, experimental measurement results are provided.
37
PC-01-140: paper 23- A Non-Isolated High Step-up DC-DC Converter with Soft Switching Capability for PV
Power Application
Hossein Shayeghi (University of Mohaghegh Ardabili), Saeed Pourjafar (University of
Mohaghegh Ardabili), Farzad Sedaghati (University of Mohaghegh Ardabili), Omid Eghbali
(Sahand University of Technology)
Abstract - In this paper, a non-isolated DC-DC converter with high voltage gain is presented
that is suitable for high voltage gain application such as Photovoltaic (PV) systems. The
proposed topology combines coupled inductor and voltage multiplier (VM) circuit. By
choosing the appropriate turn’s ratio of the coupled inductor, the higher voltage gain can be
achieved. The VM circuit is used for further extending the voltage gain and also acts as a
clamp circuit which leads to decrease the voltage stress on the switch. In addition, the zero
current switching (ZCS) condition of a diode in off-state is another merit of the proposed
structure. The proposed converter has used a single active switch with lower on state
resistance. Hence, the control of the proposed topology will be simple and the conduction
losses will be reduced by using only active switch with lower resistance. The operation
principle, theoretical analysis and comparison study are accomplished in this study. Finally, in
order to confirm the effectiveness of the presented structure, the experimental results with 25
kHz switching frequency is provided.
PC-01-126: paper 24-
A New Structure of Bidirectional DC-DC Converter for Electric Vehicle Applications
Sajjad Yahyazadeh (Shahid Beheshti University), Mehdi Khaleghi (University of Tehran),
Ahmad Salemnia (Shahid Beheshti University)
Abstract - DC-DC converters are one of the most important components of power electronics
used in electric vehicles. In this study, a new multi-input multi-output bidirectional DC-DC
converter is proposed. The proposed converter is appropriate for using in applications like
electric and hybrid vehicles. The main advantages of the proposed structure are the possibility
of using different sources of energy with different voltage-current characteristics, high voltage
gain and bidirectionality that can be used to charge the battery in the braking mode. This
converter can be a suitable alternative for two DC-DC converters used in electric vehicles. The
proposed topology is modeled and simulated in MATLAB/Simulink and results have been
provided for validation.
PC-01-50: paper 25-
A New Non-Isolated Buck-Boost Converter with High Voltage Gain and Positive Output
Voltage for Renewable Energy Applications
Yaser Babazadeh (University of Tabriz), Ebrahim Babaei (University of Tabriz, Near East
University), Mehran Sabahi (University of Tabriz)
Abstract - In this paper, a new buck-boost dc-dc converter which is applicable to renewable
energy sources is proposed. The proposed converter is capable of delivering the desired output
voltage over a wide range of input voltage variations. Depending on the load requirements, by
changing the duty cycle of the switches, the proposed converter can operate as a buck-boost
38
converter. In this converter, the output voltage polarity is the same with the input voltage
polarity, and the input has a common ground with the output. The voltage gain of the proposed
converter is high compared to similar structures. The proposed converter is thoroughly
analysed under CCM operation and simulated in the PSCAD/EMTDC software environment to
confirm the mathematical analysis.
PC-01-162: paper 26- A New Non-Isolated High Gain DC-DC Converter Suitable for Renewable Energies
Naser Hassan Pour (University of Tabriz), Kazem Varesi (Sahand University of Technology)
Abstract – This paper proposes a new high gain dc-dc converter. The proposed topology has
simple control and structure. The input and output (load) current waveforms are continuous.
The continuous character of input current makes the proposed topology appropriate for
renewable energy applications, where the Maximum Power Point Tracking (MPPT) can easily
be achieved. Usually the non-isolated non-coupled inductor based topologies suffer from low
voltage gain, but the proposed topology has extra high voltage gain, in spite of its non-isolated
and non-coupled inductor nature. The share of each element of proposed topology on
generating voltage gain is more than that of other similar structures. Despite the high gain, the
Normalized Voltage Stress (NVS) on switches/diodes of proposed topology is considerably
low. In this paper, the proposed topology has been introduced and its operational modes have
been explained. The steady state analysis have also been presented. To assess the proposed
topology, it has been contrasted with similar novel topologies. Comparison results validate the
advantages of proposed topology. The obtained simulation results (done in PSCAD/EMTDC)
confirm the effective operation of proposed topology.
Session B1
Electric Drives I
Wednesday, 13 February 15:30-17:00, Room 108
Session Chairs: Dr. Garbuio, Prof. Babaei
EA-02-75: paper 1- Robust Predictive Current Control for a Dual Inverter Fed Open-End Winding
Induction Motor Mahdi S. Mousavi (Shahid Rajaee Teacher Training University), S. Alireza Davari (Shahid
Rajaee Teacher Training University), Vahab Nekoukar (Shahid Rajaee Teacher Training
University), Jose Rodriguez (Universidad Andres Bello)
Abstract—This paper presents a robust predictive current control strategy for a dual inverter
fed open-end winding induction motor (OEWIM). Combination of two 2-level voltage source
inverter with a three-phase OEWIM produces space vector locations similar to those of a
conventional 3-level inverter. To avoid the complexity of modulation techniques for a dual
inverter, this paper employs a finite control set model predictive current control (FCS-MPCC).
Robustness of the predictive current control strategy is improved by using two techniques. A
feedback sliding mode control is used to enhance the accuracy of the prediction model. The
stability of the prediction model is verified by the Lyapunov theory. This prediction model will
39
reduce the effect of parameter variations. Also, an extended state observer is proposed for the
speed control loop to deal with the load torque disturbances and uncertainties. The proposed
speed controller leads to a more precise current reference which improves the robustness of the
predictive control. The effectiveness of the proposed method has been verified by simulations.
EA-02-115: paper 2-
A New Space Vector Modulation Technique for Reducing Switching Losses in Induction
Motor DTC-SVM Scheme Seyyed Ahmad Vaezi (University of Tehran), Hossein Iman-Eini (University of Tehran), Reza
Razi (University of Tehran)
Abstract - Direct torque control (DTC) scheme is one of the most appropriate methods to
control of AC machines. This method has positive features such as fast response, simple
structure and low dependence on motor parameters. However, the main problems in classic
DTC method are variation of switching frequency and high ripple of flux and torque. These
problems are approximately solved in the literature using advanced controllers and space
vector modulation. Nevertheless, this paper presents a new DTC method using space vector
modulation (DTC-SVM) in three-level cascaded H-bridge (CHB) converter, which has less
switching losses than the conventional SVM (CSVM) methods. The proposed method uses
switching sequences according to the reference voltage modulation index, which reduces the
number of switching commutation and switching losses. Finally, the performance of the
proposed method is presented through simulations in MATLAB/SIMULINK software.
EA-02-65: paper 3- Stator Flux Oriented Control of Brushless Doubly Fed Induction Motor Drives Based on
Maximum Torque per Total Ampere Strategy Hamidreza Mosaddegh (Ferdowsi University of Mashhad), Hossein Abootorabi Zarchi
(Ferdowsi University of Mashhad), Gholamreza Arab Markadeh (Shahrekord University)
Abstract - This paper introduces the maximum torque per total ampere (MTPTA) strategy for
brushless doubly-fed induction motor (BDFIM) drives, for the first time. In the proposed
strategy, the reference of control winding (CW) d-axis current is determined through the well-
known search-based approach. Accordingly, by tracking this reference, the magnitude of total
stator current is minimized for a given load. In addition, using the reduced order model of
BDFIM in the power winding (PW) flux reference frame, the torque expression is derived and
it is shown that if the CW d-axis current is forced to zero, the maximum torque per inverter
ampere (MTPIA) strategy is achieved to allow the minimum inverter loading. Simulation
results are finally presented to verify the effectiveness of the proposed control strategy.
40
EA-02-138: paper 4- A Novel Space Vector Modulation Strategy for Direct Torque Control of Induction
Motors Mehrdad Mirzaei (Shahrood University of Technology), Ali Dastfan (Shahrood University of
Technology)
Abstract - A novel Direct Torque Control (DTC) scheme for an induction motor drive system
is proposed in this paper. This method is based on direct load angle control to determine
needed stator voltage vector for compensation of electromagnetic torque and stator flux error
by means of new modified Space Vector Modulation (SVM) inverter controller. Objectives of
motor drive control, fixed switching frequency, low torque and stator flux ripple, consequently
low current distortion and simplicity in implementation are achieved using new modified SVM
strategy. Capability verification of proposed system is made by Matlab/Simulink simulation to
test the potentials such as torque and stator flux ripple reduction, low stator phase current
distortion either during dynamic and steady state with load variation.
EA-02-66: paper 5-
Predictive Direct Torque Control with Reduced Number of Considered States in
Synchronous Reluctance Motor Drive Aria Veysinejad (K.N. Toosi University of Technology), Saman Rahmati (K.N. Toosi
University of Technology), Sadegh Shamlou (K.N. Toosi University of Technology)
Abstract – Model productive control is a well-known and popular control method in motor
drive application; but due to its high computational burden, it requires expensive micro-
controller. The computational burden in MPC is highly related to the number of equations and
states that it has to search in each control cycle. This paper proposes a novel method in
predictive direct torque control (MPDTC) of synchronous reluctance motor (SynRM) to reach
the optimal state with less numbers of predicted states. Firstly, the space vector sectioning is
redefined as a function of torque error. Based on the defined sections and direct torque control
(DTC) concept, the reduced optimal switching table is provided. In this method, the number of
predicted states for next control cycle reduces by 57%. The results show the effectiveness of
the proposed method in torque ripple, flux ripple and total harmonic distortion (THD) of
current respect to the conventional MPDTC, which considers all switching states. The
reduction in computational burden is not affected the optimal solution but enhanced the
MPDTC method capability for implementation.
EA-03-84: paper 6-
Magnetic and Thermal Analysis of Switched Reluctance Machines Integrated Battery
Chargers Sayed Reza Rahnamaei (Isfahan University of Technology), Sayed Morteza Saghaian-nezhad
(Isfahan University of Technology), Amir Rashidi (Isfahan University of Technology)
Abstract – In this study, magnetic and thermal analysis of switched reluctance machine (SRM)
8/6, 4 kw in integrated battery chargers with electrical vehicle application is presented, this
analysis done in charging mode with three level of battery’s current. Zero torque control in this
machine calculated with consideration of mutual inductance in multi-phase mode. Because of
41
participate the SRM’s winding in charging operation, so thermal management is very
important, overheating causes the winding insulation to deteriorate and reduces its lifetime.
Session B2
Control of Power Electronic Converters
Wednesday, 13 February 15:30-17:00, Room 110
Session Chairs: Dr. Mardaneh, Dr. Rajaei
PC-10-60: paper 1- High Efficiency Electric Vehicle Fast Charging Mojtaba Salavati (University of Tehran), Sina Driss (University of Tehran), Shahrokh
Farhangi (University of Tehran)
Abstract - This paper proposes an electric vehicle fast charging station based on 3-level T-type
topology offering much higher efficiency than other three-level inverter topologies. Using two
voltage compensation algorithms simultaneously, the proposed charger keeps neutral point
voltage constant and prevents grid current distortion during different DC loading scenarios. In
addition to balancing the neutral point voltage by established modulation-based control
methods, this research overcomes the conventional balancing method limitations by adding an
auxiliary circuit to the T-type topology. This additional circuit which comes in the form of a
new leg to the inverter and consists of nothing more than an inductor in comparison with the
existing legs plays a significant role in DC-link voltage balancing functionality. Furthermore, a
novel control method is proposed which manages the simultaneous application of the
mentioned voltage balancing methods in an efficient and smart way. Performance of the
proposed topology and the new control strategy are validated through simulation and finally
their steady-state and dynamic results are presented under different DC loading conditions.
PC-10-52: paper 2-
Robust and Global Asymptotic Stable Controller for Boost AC-DC Converter Hamzeh Beiranvand (Lorestan University), Esmaeel Rokrok (Lorestan University), Amit
Kumar (Silicon Institute of Technology)
Abstract—The main obstacle of the existing Lyapunov Direct Stability (LDS) based
controllers for AC/DC boost rectifier is its poor robustness when it deals with uncertainties in
the system parameters and measurements. In this paper, robust and asymptotically stable
controller for AC/DC boost rectifier based on Lyapunov Direct Stability method is proposed.
The performance of the introduced LDS-based controller is validated using MATLAB
Simulink. The obtained simulation results for the proposed controller implies its fast dynamic
performance. In addition, the control laws are derived directly based on LDS theory to ensure
the global asymptotic stability. The robustness of the LDS based controller is tested in the
presence of uncertainties in the system parameters and its performance is also compared with
conventional LDS based controllers. The faster dynamic performance and asymptotic stability
are making the proposed controller an interesting solution for power electronic conversion
42
applications.
PC-10-147: paper 3- A Step by Step Design Procedure of PR controller and Capacitor Current Feedback
Active Damping for a LCL-Type Grid-tied T-Type Inverter Navid Rasekh (University of Mohaghegh Ardabili), Mohammad Mohsen Rahimian (University
of Mohaghegh Ardabili), Majid Hosseinpour (University of Mohaghegh Ardabili), Abdolmajid
Dejamkhooy (University of Mohaghegh Ardabili), Adel Akbarimajd (University of Mohaghegh
Ardabili)
Abstract – Distributed power generation systems use power electronics converters as interface
for connection to grid. The connection through an LCL filter offers certain advantages, but it
brings also the disadvantage of having a resonance frequency. Power electronic converter
control is challenging due to filter resonance peak. In this paper a three level ultra-efficient
converter called T-Type converter is connected to grid through an LCL filter and its injected
current is controlled by PR controller. The resonance peak of the filter is also damped using
filter capacitor current feedback. A step by step mathematical design procedure for controller
and filter capacitor current feedback coefficient is investigated in details. Simulations are
carried out in MATLAB/Simulink environment and results depict suitable performance of the
system with designed parameters.
PC-07-145: paper 4- A Novel Current Observer based on Fourier series for Model Predictive Control System
using DVR Sajjad Zeinali-arabzadeh (Ferdowsi University of Mashhad), Reza Ghazi (Ferdowsi
University of Mashhad), Hamed Heydari-doostabad (Ferdowsi University of Mashhad)
Abstract—This paper proposes a control system based on the predictive control for voltage
source converter in DVR. The proposed control system is applied on a three phase distribution
power system including the nonlinear load and DVR. The DVR is used to enhance the power
quality problems such as sag, swell, harmonics and unbalance. The proposed control system
predicts the injected voltages of DVR for all switching states and then the cost functions are
evaluated for these voltages. Then regarding the cost function, the best Switching vector is
selected and applied on VSC. The performance of the proposed method is examined through
providing the necessary simulation and comparison using Matlab/Simulink.
PC-01-106: paper 5-
Simulation of a Step-up Resonant Switched-Capacitor Converter under the CCM
Operation Mode Atefeh Salehian (Tarbiat Modares University), Seyed Saeed Hashemi (Tarbiat Modares
University), Reza Beiranvand (Tarbiat Modares University), Ali Yazdian (Tarbiat Modares
University)
Abstract - This paper presents a resonant switched capacitor converter (SSC) above its
resonant frequency to achieve zero voltage switching (ZVS) operation and overcome its
voltage regulation issue. The ZVS operation under the CCM operation mode reduces switching
43
losses and improves the converter efficiency more than zero current switching (ZCS) operation
below the resonant frequency in MOSFET based converters. In addition, under the CCM
operation mode the output voltage can be regulated even when wide input voltage and load
variations are applied. The symmetrical dual structure proposed converter causes the input
current ripple and output voltage ripple to be reduced more in contrary to previous researches.
Therefore, the input filter and output capacitor are reduced, effectively. The proposed SCC has
been simulated to regulate a 400 V output voltage when wide input voltage (80-120V) and
output power (50-320 W) variations are applied. to regulate the output voltage switching
frequency variation from 200.2 kHz up to 415 kHz is necessary.
PC-01-199: paper 6- A Fault-Tolerant Strategy for Three-Phase Dual Active Bridge Converter Amirali Davoodi (Sharif University of Technology), Negar Noroozi (Sharif University of
Technology), MohammadReza Zolghadri (Sharif University of Technology)
Abstract—Due to several advantages, three-phase Dual Active Bridge (DAB) converter is
widely used in numerous applications nowadays. On the other hand, this converter is very
vulnerable to Transistor Open-Circuit Fault (TOCF). Therefore, a fault-tolerant (FT) scheme
has been proposed in this paper to solve the problem. First, normal and faulty conditions are
investigated, and according to the results, a fault-diagnosis (FD) approach is introduced. Using
the outcomes of FD unit, a new post-fault strategy is proposed for the converter. The FD
method is based on the DC component of transformer phase currents, and the basis of FT
technique is shedding the faulty phase. Some benefits of the proposed scheme are preventing
the shut-down of the system, no overvoltage or overcurrent, no additional power components,
and insensitivity to operational conditions. Simulation results are also provided to confirm the
analyses, and evaluate the performance of the proposed scheme.
Session B3
Grid-connected Inverters
Wednesday, 13 February 15:30-17:00, Room 104
Session Chairs: Dr. Samet, Dr. Zolghadri
PC-09-181: paper 1- An Improved Combined Control for PMSG-Based Wind Energy Systems to Enhance
Power Quality and Grid Integration Capability
Mohammad Jahanpour-Dehkordi (Advanced Motion Systems Research Lab), Sadegh Vaez-
Zadeh (Advanced Motion Systems Research Lab, Center of Excellence on Applied
Electromagnetic Systems), Ali Ghadamgahi (Advanced Motion Systems Research Lab)
Abstract - Fast transient and smooth steady state responses are among the most important
desirable requirements of permanent magnet synchronous machine based wind energy
conversion systems to provide power quality and grid connection capability. Combined
control, has a potential to accommodate the mentioned features, by using vector control and
direct torque control. In this paper, it is shown that the conventional combined control can be
44
improved effectively by fully employing the potential. Investigating the fundamental basis of
combined control by new mathematical analysis, an improved combined control system is
introduced which provides faster transient and smoother steady state responses of the system in
comparison with the conventional combined control. The system performance features
enhance the grid connection capability of the machines and improve the THD of transferred
power to the grids.
PC-09-191: paper 2- Power Quality Improvement Using Virtual Flux Combined Control of Grid Connected
Coverters under Balanced and Unbalanced Grid Operation Alireza Jabbarnejad (Advanced Motion Systems Research Lab), Sadegh Vaez-Zadeh
(Advanced Motion Systems Research Lab, Center of Excellence on Applied Electromagnetic
Systems)
Abstract— Three phase grid connected power electronic converters (GCCs) are unavoidable
means for developing and supporting power systems todays. However, their harmonic
injection and high frequency switching may lead to reduction of power quality. Thus, GCCs
injected harmonics should respect to the corresponding standards. In this paper, a novel control
method is proposed for the GCCs to improve the power quality and current THD under both
balanced and unbalanced grid operation. The method employs a virtual flux in connection with
a combined control for the first time. Compared to the conventional virtual flux direct power
control, the method provides much better power quality, reduced THD, lower switching
frequency, plus less grid parameters sensitivity. In comparison with the conventional combined
control method, it does not have grid voltage sensors and cumbersome controller tuning. In
addition, the proposed method well respect the standards using the appropriate current
references without positive and negative sequence extraction under unbalanced grid
conditions.
PC-08-20: paper 3- Improved Direct Power Control of DFIG Wind Turbine by using a Fuzzy Logic
Controller S. Khateri-abri (University of Tabriz), S. Tohidi (University of Tabriz), N. Rostami (University
of Tabriz)
Abstract - This paper proposes a novel scheme for direct power control (DPC) of doubly-fed
induction generator (DFIG) in wind power applications. In this scheme, a fuzzy logic
controller is used for adjusting the bandwidth of active power hysteresis controller in DPC
method in order to reduce the active power ripples and improve dynamic response of the
generator. Also, in this paper a simpler method is used for determination of the sector number
that lowers the burden of the system. Moreover, the rotor position sensor is eliminated and a
MRAS observer is used for estimation of the rotor position. Simulation results by using
MATLAB/Simulink presented for a 2MW DFIG system proves the effectiveness of the
proposed control method.
45
PC-07-202: paper 4- Analyzing Delay-Power Relationship of the Grid-Connected Inverters in System Small
Signal Stability Mohammad Hassan Ghaderi (Shahid Beheshti university), Nasim Rashidirad (Shahid Beheshti
university), Mohsen Hamzeh (University of Tehran)
Abstract— This paper concentrates on the stability issue of three-phase grid-connected
inverters, by considering the delay time of digital control systems. To this aim, at first, it has
been shown that the existence of delay influences on system stability improvement. Further,
our more detailed studies show that, in terms of stability, there is a relationship between the
delay and the power of inverters, called as delay-power relationship for grid-connected
inverters. The principle of the mentioned relationship is based on the fact that more powers
lead to lower stability margins, especially at higher frequencies. Finally, simulation results
verify the analysis resulted by the impedance-based method.
PC-07-79: paper 5-
Power Quality Compensation and Power Flow Control in AC Railway Traction Power
Systems Majid Zare (Tarbiat Modares University), Ali Yazdian Varjani (Tarbiat Modares University),
Seyed Mohammad Dehghan (Qom University of Technology), Saeed Kavehei (Tarbiat
Modares University)
Abstract - Rail transport is one of the transportation methods on earth that is very frugal in
energy consumption. Electric railway technology has many advantages and disadvantages as
well. The most important disadvantage of this technology is the creation power quality
problems in the upstream power system. In other words, electric railway traction systems due
to continuous load variations, Reactive power demand, asymmetry and harmonic Pollution can
be challenged for the upstream power system. In this paper, after introducing the structure of
the AC electric railway network and its related power quality issues, the railway power quality
compensator (RPQC) is introduced. Also, in order to active power transfer between the various
lines of electric railway, a railway interline power flow controller (RIPFC) has been
introduced. The proposed structure RIPFC is in parallel, unlike the conventional one which is
installed in series with the lines. RPQC and RIPFC contains two Separate single phase
converters that are connected back to back (B2B) by sharing the same dc link. Extraction of
compensating currents for RPQC and RIPFC is based on current measurement and its
separation into active, reactive and harmonic components. Moreover, a controller is proposed
to maintain the dc-link voltage. The simulation results using PSCAD/EMTDC are provided to
demonstrate that the proposed strategies is very effective.
Session B4
PV Converters I
Wednesday, 13 February 15:30-17:00, Room 106
Session Chairs: Dr. Eliseev, Dr. Rastegar
46
PC-04-153: paper 1- High Power Quality Wide Range Power Source for B-H Meter Applications Hossein Azizi Moghaddam (Niroo Reasearch Institue(NRI)), Ali Haghi (Niroo Reasearch
Institue(NRI)), Farshid Mahmouditabar (Iran University of Science and Technology)
Abstract - measurement of magnetic material characteristics is one of the most important
issues for electrical engineers who work in transformer and machine design. The measurement
device known as B-H meter is designed for this purpose. One of the most important parts of
the B-H meter is programmable power source. The accuracy and uncertainty of B-H meter
device is mostly affected by the quality of output power source voltage. In this paper, a hybrid
power amplifier including cascade H-bridge multilevel inverter and a linear power amplifier
are presented for using in B-H meter devices. The proposed power amplifier reduce the total
harmonic distortion, effectively. By considering high bandwidth of linear power amplifier, it
can be used to generate harmonic components at the output voltage. The presented amplifier is
simulated in the MATLAB software and the amplifier performance has been confirmed in
terms of power quality characteristics.
PC-04-206: paper 2-
A Single DC-Source Five-Level Inverter Applied in Stand-Alone Photovoltaic Systems
Considering MPPT Capability
Mohammad Farhadi-Kangarlu (Urmia University), Milad Gavipanjeh Marangalu (Urmia
University)
Abstract— This paper presents a single DC source five-level photovoltaic inverter topology for
a stand-alone photovoltaic (PV) system. The proposed PV converter system consists of a five-
level inverter and a buck DC-DC converter. The DC-DC converter that embedded in the
inverter structure is used to realize the maximum power point tracking (MPPT) in various
environmental conditions (temperature and irradiation). Also, as the studied system is stand-
alone PV system, a battery energy storage system (BESS) is also included which consists of a
bidirectional buck/boost DC-DC converter and a battery energy storage. The BESS is
connected to a branch of the DC-link and controls the DC-link voltage while managing the
battery energy. One of the main advantages of the proposed converter is that the buck DC-DC
converter which is in-charge of MPPT, deals with partial power of the PV and hence the
system efficiency would be improved. The simulation results using MATLAB/ SIMULINK
confirm the performance of the proposed topology in different scenarios.
PC-04-101: paper 3- A Five-Switch Active NPC with Low Output Voltage THD for Photovoltaie Applications Mohammad Zamani Khaneghah (Iran University of Science and Technology), Adib
Abrishamifar (Iran University of Science and Technology)
Abstract - Boosting the low voltage output of renewable sources to the utility voltage state is
one of the important issue in the renewable applications. The step-up DC-DC converters are
widely used in these systems to attain the utility voltage. The benchmarking of the converters
47
mainly in terms of the voltage gain, efficiency, the number of active and passive components,
the voltage stress on semiconductors, and simplicity is considered. In this paper, a new
extendable non-isolated boost DC-DC converter is presented. Comparing the conventional
boost converter, the basic structure of the proposed converter has the high voltage gain and
reduced stress on the switch. In order to increase the voltage gain, the basic structure of the
proposed converter can be easily extended. The detailed analysis of the proposed converter in
continuous current mode (CCM) is presented. To verify theoretical concepts, the simulation
results are carried out using the MATLAB/SIMULINK.
PC-04-70: paper 4- Active and Reactive Power Control Strategy of the Modular Multilevel Converter for
Grid-Connected Large Scale Photovoltaic Conversion Plants
Mohammad Mirzaei Banafsh Tappeh (Amirkabir University of Technology), Javad Shokrollahi
Moghani (Amirkabir University of Technology), Amir Khorsandi (Amirkabir University of
Technology)
Abstract - Power converter design play an essential role in harvesting cheap and reliable
electrical energy from solar energy. In the design of the converters, an appropriate trade-off
between power converter output power quality and complexity should be made. Meanwhile,
modular multilevel converters (MMC) are such a popular choice due to significant advantages
like modularity, switching redundancy, the high number of voltage levels, lower output
harmonics, elimination of expensive and huge output filters, etc. In this paper, a modified
control strategy considering photovoltaic array structure for a high power MMC is presented.
The proposed approach results in enormous faster dynamic and decoupled injected active and
reactive power control. Also, using a single carrier modulation technique, and applying it to
the capacitor voltage balancing algorithm, the capacitor voltage ripple is constrained to the
allowed limits, which significantly decreases the circulation current. A 3MW 9-level MMC has
been evaluated by MATLAB/Simulink to validate the operation of proposed modified current
loop MMC controller.
PC-01-210: paper 5-
A New Transformerless Common-Ground Single-Phase Inverter for Photovoltaic
Systems
Mohammad Hassan Ghaderi (Shahid Beheshti university), Ali Sarikhani (Shahid Beheshti
university), Mohsen Hamzeh (University of Tehran)
Abstract— A novel transformerless single-phase inverter suitable for photovoltaic systems is
introduced in this paper. The common-ground feature of this topology provided between the
input and output terminals leads to elimination of leakage current in the photovoltaic systems.
Compared to the single-phase semi-Z-source and switched-coupled-inductor Z-source
inverters, the proposed inverter guarantees the higher voltage gain. In design procedure of the
presented topology, the capacitors are selected small enough to satisfy the reliability and the
economic issues. The operation principles of the inverter are discussed and finally the
simulation studies have been carried out to confirm the validity of the performance of the
proposed topology.
48
Day 2: Thursday, 14 February
Session C1
Special Applications I
Thursday, 14 February 9:00-10:30, Room 108
Session Chairs: Dr. Rastegar, Dr. Arab Khaburi
EA-05-74: paper 1- State Estimation for Sensorless Control of BLDC Machine with Particle Filter Algorithm Yaser Chulaee (Ferdowsi University of Mashhad), Hossein Abootorabi Zarchi (Ferdowsi
University of Mashhad), Seyyed Iman Hosseini Sabzevari (Ferdowsi University of Mashhad)
Abstract – This paper presents a technique in order to estimate the rotor speed and position of
the BLDC machine. In the proposed method, particle filter (PF) is employed to estimate state
variables of the machine using measured currents and line voltages. PF is a type of stochastic
filters that has wide applications in state estimation of non-linear systems. The main aim of
this paper is to utilize particle filter in the sensorless control of BLDC machine and investigate
proposed PF algorithm performance. In addition, effective parameters in estimation accuracy
and transient response of the filter are discussed. The simulation is performed in
MATLAB/SIMULINK environment and results denote that proposed sensorless drive have
good accuracy in wide speed range and load torque variation. Also, the algorithm performance
is not influenced by the incorrect initial position.
EA-05-38: paper 2- Selection of Excitation Signal Waveform for Improved Performance of Wound-Rotor
Resolver A. Farhadi-Beiranvand (Sharif University of Technology), R. Alipour-Sarabi (Sharif
University of Technology), Z. Nasiri-Gheidari (Sharif University of Technology), F.
Tootoonchian (Iran University of Science and Technology)
Abstract—Wound-Rotor (WR) resolvers are similar to two-phase synchronous generators.
Their difference is related to the excitation signal. While DC voltage is used for exciting
synchronous generator, high frequency AC voltage is employed for that of resolver. The
common waveform for excitation signal of resolver is sinusoidal voltage. However, preparing
the high frequency sinusoidal voltage in the resolver to digital converter (RDC) is always a
challenge. Therefore, in this paper different high frequency AC waveforms are applied as the
excitation signal of the resolver and the estimated position, resulted from RDC, is discussed.
The aim of this work is to find an appropriate excitation waveform that ensures the high
accuracy operation of resolver beside the simple implementation possibility for RDC. Output
analogue voltages are obtained using time stepping finite element analysis. Then, the
amplitude modulated (AM) signals are imported to the MATLAB where two demodulation
techniques are compared for calculating the voltages’ envelope and the position error. Finally,
experimental measurements validate the simulation results.
49
EA-05-39: paper 3-
Design Considerations of Multi-Turn Wound-Rotor Resolvers S. Hajmohammadi (Sharif University of Technology), R. Alipour-Sarabi (Sharif University of
Technology), Z. Nasiri-Gheidari (Sharif University of Technology), F. Tootoonchian (Iran
University of Science and Technology)
Abstract—Multi-turn resolvers are consisted of two individual resolvers in one housing. Due
to use of both single speed and multi-speed resolvers in one frame, multi-turn resolvers are
supposed to provide the benefits of higher accuracy and absolute position measurement,
simultaneously. In this paper, after presenting different configurations of wound-rotor (WR),
multi-turn resolvers, their design considerations are discussed. Winding function (WF) method
is used for finding appropriate slot-pole combinations, and winding configurations. Then time
stepping finite element analysis is applied to evaluate the performance of the designed
resolvers. Finally, experimental measurements validate the simulation results.
PC-16-148: paper 4- Common and Differential Modes of Conducted Electromagnetic Interference in Electric
Vehicle equipped with Supercapacitor
Sepehr Karimi (Shiraz University), Ebrahim Farjah (Shiraz University), Teymoor Ghanbari
(Shiraz University)
Abstract - Electromagnetic interference in electric vehicles (EVs) is a major problem. In order
to achieve electromagnetic compatibility (EMC), analysis of common mode (CM) and
differential mode (DM) noises in EVs are essential. In this paper, for the first time, different
operation modes of an EV equipped with a supercapacitor are studied from conducted
electromagnetic interference (EMI) aspect. In the simulations, the supercapacitor impacts on
exceeding the EMI permissible range are investigated considering the relevant standard.
PC-15-141: paper 5-
Control of Single-Phase Bidirectional PEV/EV Charger Based on FCS-MPC Method for
V2G Reactive Power Operation Kourosh Khalaj Monfared (University of Tehran), Hossein Iman-Eini (University of Tehran),
Reza Razi (University of Tehran)
Abstract—This paper presents the design of a finite control set model predictive (FCS-MPC)
control for Single-Phase Bidirectional PEV/EV charger for vehicle to grid (V2G) reactive
power operation that can provide reactive power support to the utility grid in addition to
charging the vehicle battery. The topology consists of two-stages: 1) a multilevel H-bridge ac–
dc converter; and 2) an isolated DBRCS bidirectional dc–dc converter. The AC-DC converter
is controlled by the FCS-MPC strategy. Applying FCS-MPC to AC-DC converter, along with
simplicity, improving the dynamic performance of battery charger. For DC-DC converter,
single-phase-shift (SPS) control is used. This paper investigates single-phase schemes of the
proposed charger and control system. The proposed battery charger is theoretically analyzed
and simulation results using the MATLAB/Simulink software are presented to verify its
operation.
50
PC-05-97: paper 6-
Improved Railway Static Power Conditioner Using C-type Filter in Scott Co-phase
Traction Power Supply System
Mohammad Habibolahzadeh (Iran University of Science and Technology), Hossein Mahdinia
Roudsari (Iran University of Science and Technology), Alireza Jalilian (Iran University of
Science and Technology), Sadegh Jamali (Iran University of Science and Technology)
Abstract – Railway static power conditioner (RPC) has been utilized to compensate power
quality indices (current unbalance, voltage/current harmonics and grid-side power factor)
simultaneously in AC electrified railway. In this paper, a hybrid configuration including C-
type filter (CTF) and RPC is proposed in Scott co-phase traction power system. Some part of
the load reactive power is compensated by the CTF, while the RPC compensates the remaining
part of the reactive power. Furthermore, harmonic mitigation analysis is investigated for high-
order harmonics suppression. By implementing the CTF, the VA rating reduction of the RPC
is achieved and the dc-link voltage can be also operated at a lower level for a specific traction
load. Without imposing any complexity to the control system, modified instantaneous PQ
theory is adapted to obtain the reference currents. A theoretical analysis process is given and
simulation results verify the validity of the proposed structure.
Session C2
Power Electronic Converters
Thursday, 14 February 9:00-10:30, Room 104
Session Chairs: Dr. Rahideh, Dr. Allahbakhshi
PC-10-49: paper 1- Volume Optimization in Si IGBT based Dual-Active-Bridge Converters Hamzeh Beiranvand (Lorestan University), Esmaeel Rokrok (Lorestan University), Marco
Liserre (Christian-Albrechts-Universität zü Kiel)
Abstract –Dual-Active-Bridge (DAB) converters are able to step up/down DC voltage in a
wide range by adopting medium frequency transformer (MFT) for isolating and converting
voltage level. Increase in switching frequency of Si IGBTs reduces the MFT size instead it
intensifies the semiconductor switching losses which leads to increase in the heatsink size. In
this paper variation of heatsink volume versus frequency is compared versus MFT. MFT and
heatsink volume of a 5 kW 600 to 400 V DAB converter are optimized. Obtained results show
that variation of switching frequency in range 1-10 kHz increases the size of optimal heatsink
by 3 times, i.e ,HS opt sV f kHz
.
51
PC-02-88: paper 2- A High Step-Up DC/DC Switched-Capacitor Converter with Soft Switching and
Regulated Output Voltage Parisa Doaee (Tarbiat modares University), Reza Beiranvand (Tarbiat modares University)
Abstract - One of the most important sources of renewable energies is the solar energy. But,
due to the low output voltage characteristics of the common solar cells, a dc-dc converter is
usually used to trace the maximum power point and to increase the output voltage to a desired
value. Although, high voltage gains can be obtained in some switched-capacitor converters
(SCC), but their currents are generally contain some high current spikes that limit the
efficiency and output power, and also their load voltage regulations are weak. To overcome
these problems, a high step-up switched-capacitor converter is proposed and analyzed, here,
without any current spikes and with zero voltage switching (ZVS) capability that lead to low
EMI noise and switching and conduction losses, and high efficiency. Also, the proposed SCC
can regulate the output voltage. Also, switching frequency can be increased as high as possible
to increase the converter power density. To confirm the given mathematic analyses, the
proposed converter has been simulated to regulate a 400 V output voltage even when wide
input voltage (40-60 V) and load (5-266 W) variations are applied.
PC-01-82: paper 3- Two High Stepped up Continuous Input Current Active Switched-Inductor Quasi-Z-
Source Inverters Milad Abbasi (Shiraz University of Technology), Mohammad Mardaneh (Shiraz University of
Technology), Ebrahim Babaei (University of Tabriz)
Abstract— In this paper, two new structures are proposed for active switched-inductor quasi-
Z-Source inverters. In the proposed structures, switched-inductor structure is used to extend
the voltage gain of the inverter. The proposed inverters can be named active switched-inductor
qZSI (ASL-qZSI) and active switched-capacitor/inductor qZSI (ASCL-qZSI). The proposed
inverters have the advantage of increased voltage gain per smaller duty cycle and both of them
have continuous source current. Compared with conventional enhanced boost qZSI with two
switched impedance network (EB-qZSI) the proposed inverters provide high boost ability by
one extra switch with less number of components (two capacitors and one inductor are reduced
in proposed ASL-qZSI, one capacitor, one diode and one inductor are reduced in proposed
ASCL-qZSI). Compared with conventional modified switched-capacitor Z-source inverter the
proposed ASCL-qZSI has high boost factor with fewer components in Z-source network (with
one extra switch). To verify and evaluate the obtained results the prototypes of the proposed
inverters with 48 Vdc input voltage are constructed.
52
PC-01-44: paper 4- A Family of High Step-Up A-Source Inverters with Clamped DC-Link Voltage Soroush Esmaeili (University of Guilan), Shokouh Karimi (University of Guilan), Ali Mostaan
(University of Guilan), Atif Iqbal (Qatar University), Alireza Siadatan (University of Toronto)
Abstract – A family of novel impedance source inverters based on an auto-transformer is
presented in this manuscript. The proposed topologies utilize minimal coupled inductors turns
ratio to obtain high voltage boost ability in comparison with previous magnetically coupled
impedance source inverters. The impedance source inverters using coupled inductors attain
high voltage gain in smaller shoot-through interval compared to transformer-less group, but
they suffer dc-link voltage spikes due to leakage inductances of their coupled inductors. So, in
presented inverters, absorbing circuits are utilized to reduce these spikes. Besides that,
absorbing circuits lead to higher voltage boost ability, lower shoot-through duty cycle and
better modulation index. In addition, all the novel structures have continuous input current
which is suitable for renewable energy sources such as fuel cell and photovoltaic systems.
Theoretical analysis in steady state and simulation results are presented to verify the inverters
performance.
PC-01-30: paper 5-
An Extended Quasi-switched Z-Source Inverter Mehran Sabahi (University of Tabriz), Ebrahim Babaei (University of Tabriz), Taher
Ahmadzadeh (University of Tabriz), Pouya Kolahian (University of Tabriz), Hadi Tarzamni
(Sharif University of Technology)
Abstract - In this paper, a new extended quasi-switched Z-source inverter, using a switched-
inductor cell, is proposed. The most important advantage of the proposed inverter is achieving
the maximum voltage gain in the lower duty cycle with less circuit components than similar
previous inverters, which causes the modulation index value increase. Furthermore, it leads to
less power losses and less voltage and current ripples. The employed control method in this
inverter is the pulse width modulation (PWM) simple boost control method. In this paper,
theoretical analysis and comparison results of the proposed inverter with other similar ones are
prepared. In addition, the experimental results reconfirm the accuracy of the proposed
extended-qSZSI.
53
Session C3
Electric Drives II
Thursday, 14 February 9:00-10:30, Room 106
Session Chairs: Dr. Setoudeh, Dr. Mohammadi
EA-08-117: paper 1- Portable Remotely Operated Underwater Smart Vehicle with a Camera and an Arm Mais Farkhadov (V.A. Trapeznikov Institute of Control Science), Alexander Abramenkov (V.A.
Trapeznikov Institute of Control Science), Alexander Abdulov (V.A. Trapeznikov Institute of
Control Science), Alexander Eliseev (V.A. Trapeznikov Institute of Control Science)
Abstract – In this paper we present a remotely operated underwater smart vehicle. We
demonstrate that smart features can be added to a dumb analogue remotely operated
underwater drone by a small team of engineers on tight budget. Our vehicle maintains compass
and depth headings, records video to an on-shore terminal. In addition, our vehicle has a
remotely operated arm with 3 degrees of freedom. Our ROV won the first prize on
AquaRoboTech 2018 competition and has a potential to be upgraded with advanced machine
vision algorithms.
EA-04-19: paper 2- Post Fault Vector Control of an Induction Motor Fed by a CHB Inverter Manuchehr Fathi (Sharif University of Technology), Mohammadreza Zolghadri (Sharif
University of Technology), Saeed Ouni (McMaster University), Reza Babaloo (Islamic Azad
University Science and Research Branch)
Abstract—In this paper, a new post-fault vector control of an induction motor, fed by a faulty
Cascaded H-Bridge (CHB) inverter, is presented. Among Fault tolerant control methods,
waveform based methods are suitable for closed-loop control and provide higher output
voltage. In order to control the speed of the motor, a rotor field oriented control (RFOC) is
used. During the fault, the FOC is modified to decrease the fault impact on the motor as low as
possible. The proposed method is validated by means of simulation results for different loads
and faults. The results show an improvement in both the final operating point and the transient
response of the motor.
EA-03-72: paper 3- A Method for Vibration Alleviation of SRM When Demagnetization Voltage is Boosted Amirhosein Malekipour (Isfahan University of Technology), Sayed Morteza Saghaiannezhad
(Isfahan University of Technology), Amir Rashidi (Isfahan University of Technology)
Abstract – This paper concentrates on vibration reduction of switched reluctance motor while
phases are demagnetized by a boosted voltage compared to magnetization voltage. Three
different methods are investigated in this paper, first method is the conventional method based
on Asymmetrical H-Bridge converter providing fixed voltage in both magnetization and
demagnetization instances. Second method is when demagnetization voltage is boosted
compared to magnetization voltage but conventional control algorithm is used and it is shown
54
that in this condition, the vibration intensity is too high. Third method uses a control algorithm
to impose the boosted demagnetization voltage in a way that reduces vibrartion intensity of
stator’s frame. For all three methods firstly an electromagnetic finite element analysis is used
to obtain radial forces and these forces are passed through motor’s vibration transfer function
and vibration waveforms are obtained. Finally a comparison between vibration response of
these three methods is done.
EA-02-137: paper 4- Deviation Control in Comparison with DTC and FOC for SynRM Drives Ehsan Daryabeigi (Yazd University), Ahmad Mirzaei (Yazd University), Hossein Abootorabi
Zarchi (Ferdowsi University of Mashhad), Sadegh Vaez-zadeh (University of Tehran)
Abstract – Control issues in electric drives basically deal with the deviation of variables
introducing dynamical behaviors. Hence, a deviation model could be effective as an approach
to the issues. In addition, dynamical analyses have some complexities by using nonlinear and
multi-variables modeling. In this paper, a deviation modelling approach is discussed to analyze
and control a synchronous reluctance motor (SynRM) drive. Normalization as a tool supports
the deviation modeling to simplify the model. A deviation model-based controller (DevC)
provides some facilities in terms of parameter independency, simplicity, flux and torque
decoupling, and fast dynamics. DevC is compared with Field-oriented control (FOC) and
Direct Torque Control (DTC) methods in aspects of torque ripples, switching features, and
dynamic responses. Both experimental and simulation results support the theoretical findings.
The proposed approach not only could be developed for other electrical drives but also it could
be adopted for other dynamic systems.
PC-07-80: paper 5- EMC Generation and Propagation in Embedded Grids with Multiple Converters Blazej Czerniewski (G2ELab, Université Grenoble Alpes, University of Nottingham), Jean-
Luc.Schanen (G2ELab, Université Grenoble Alpes), Pericle Zanchetta (University of
Nottingham)
Abstract— This paper presents an electromagnetic compatibility (EMC) investigation of DC
grid. A notional grid is composed of two boost converters connected in parallel. Analytical
models and time-domain simulations were used in the study. Moreover, some experimental
measurements have been carried out. The objective was to determine the differences between
overall electromagnetic interference (EMI) disturbances generated by each converter and the
actual noise generated in the DC grid. The analysis revealed the impact of the converters’
impedance on the EMI noise generation, which should be considered in design of new grids
including a large number of converters.
55
Session C4
Multi-level Inverters
Thursday, 14 February 9:00-10:30, Room 110
Session Chairs: Prof. Tavakolibina, Dr. Rajaei
PC-16-184: paper 1- A Robust Short-Circuit Fault Diagnosis for High Voltage DC Power Supply Based on
Multisensor Data Fusion Ramin Ayoubi (Sharif University of Technology), Shahriyar Kaboli (Sharif University of
Technology)
Abstract— Short-circuit fault (SCF) detection is mandatory in a high voltage DC power supply
(HVPS) to prevent fatal damage. The majority of converters employ a single sensor to detect
the SCF. This attribute increases the interference vulnerability of the fault detection (FD)
system in the presence of noise. Therefore, miss detections and false alarms are possible to
occur. Miss detections and false alarms are harmful catastrophes in most applications. A
commonly used method to suppress the noise impacts is using a low-bandwidth low-pass filter.
However, the use of the low-bandwidth low-pass filter reduces the speed of FD due to the filter
delay. This paper proposes a fast FD algorithm based on multisensor data fusion. The proposed
FD system consists of three FD subsystems with high-bandwidth low-pass filters, which each
one is individually implemented by sensing three distinct variables and reaches a local decision
about the SCF occurrence. Finally, all local decisions are gathered in a decision fusion center
and a global decision regarding the converter situation will be made based on the weighted
decision fusion. The simulation and experimental results confirm the performance of the
proposed FD system in the presence of noise.
PC-04-34: paper 2- Cascaded Half-Bridge Multilevel Inverter with Asymmetric Voltage Sources and
Reduced Number of Components Hossein Khoun Jahan (University of Tabriz), Amin Mohammadpour Shotorbani (University of
British Columbia), Ali Farzamnia (Universiti Malaysia Sabah), Behnam Mohammadi Ivatloo
(University of Tabriz), Mehdi Abapour (University of Tabriz), Kazem Zare (University of
Tabriz)
Abstract—This paper proposes a new multilevel inverter topology, synthetized with several
basic modules and one complementary unit. The employed basic modules realize either
positive or negative voltage levels except the zero level. Therefore, a complementary module
is utilized to provide zero level in addition to positive and negative levels. The proposed
cascaded multilevel inverter topology reduces the number of power switches by using half-
bridge cells instead of full-bridge cells. The voltage values of the dc sources in the proposed
topology can either be ascertained symmetrically or asymmetrically. In this paper, the
asymmetric establishment of the dc voltage sources is investigated. The feasibility and
performance of the proposed topology are evaluated through numerical simulation and
experimental verification.
56
PC-04-27: paper 3-
A New Basic Step-Up Cascaded 35-Level Topology Extendable To Higher Number of
Levels Kazem Varesi (Sahand University of Technology), Mahdi Karimi (Sahand University of
Technology), Paria Kargar (Sahand University of Technology)
Abstract – A new step-up Cascaded Multi-Level Inverter (CMLI) has been proposed in this
paper. The proposed basic 35-level topology is composed of 4 DC sources, 2 capacitors, 2
diodes and 12 switches. The sum of input DC sources is 10Vdc, where the peak output voltage
is 17Vdc. So, the proposed basic topology can act a step-up inverter with the gain of about 1.7.
The proposed basic topology has simple structure. Since the voltage balancing of capacitors
are done naturally, the control of proposed topology is also simple. The number of levels per
number of components (such as DC sources, switches, gate driver circuits, diodes and
capacitors) in proposed basic topology is higher than other similar converters. In this paper, the
proposed basic topology has been introduced and its operational principles have been
presented. Then, it has been compared with recently presented novel structures. The
comparison results validate the advantages of proposed basic topology. Then, the proposed
basic topology has been extended to act as a Multi-Level inverter. Finally, the appropriate
performance of proposed basic topology has been verified by simulation results, extracted
from PSCAD/EMTDC software.
PC-04-193: paper 4-
A Quasi-Resonant Switched-Capacitor High Step-Up Multilevel Inverter with Self-
Voltage Balancing Shahin Sabour (Urmia University), Daryoush Nazarpour (Urmia University), Sajjad
Golshannavaz (Urmia University), Reza Choupan (Urmia University), Mahdi Mahzouni-Sani
(Urmia University)
Abstract - In this paper, a new proposed horizontal high step-up quasi-resonant switched
capacitor multilevel converter topology is designed based on the series connection of several
switched-capacitor basic modules and units. The voltage gain of the developed multilevel
converter is related to the number of used switches capacitor basic modules and units. The
main advantage of the suggested topology is inherent voltage balancing of utilized capacitors.
The proposed horizontal topology is optimally designed to minimize the number of capacitors,
power switches, and the value of voltage on switches for given levels. The proposed topology
is compared with other high step-up multilevel converter topologies and conventional
structures. The comparison results show that the presented structure requires the least number
of switches and DC sources. The quasi-resonance technique is utilized to suppress the current
spikes that emerge from the instantaneous parallel connection of the series-connected
capacitors and the input source, decreasing the capacitance, increasing their lifetimes, and
reducing the electromagnetic interference, simultaneously. In order to confirm the operation of
the proposed high step-up multilevel converter, simulation work is provided.
57
PC-04-58: paper 5- A New Switch Capacitor Multilevel Inverter with Partial Charging Switching And
Reduced Components
Shahin Sabour (Urmia University), Daryoush Nazarpour (Urmia University), Mahdi
Mahzouni-Sani (Urmia University)
Abstract - In this paper, a switched capacitor multilevel inverter topology is proposed. The
predominant feature of this inverter is the near sinusoidal staircase in output voltage. The aim
of this method is, utilizing the partial charging such a way that multiple voltage steps per
capacitor can be obtained whatever reduced the number of capacitors for a given number of
levels. To do this, only two capacitors is applied for a 13-level proposed topology. Moreover,
this topology is successfully designed and analyzed based on assessing the total harmonic
distortion. In next step, a switching method is introduced which could be increased the output
levels without enhancing the number of elements in the circuit. Simulation results are catered
to confirm the theoretical and analytical analysis of the proposed model.
.
Poster presentation II Floor st1 -0, Classroom Building11:0 –Thursday, 14 February 10:30
Chairs: Dr. Karimaghaee, Dr. Arefi PC-16-16: paper 1-
Reliability Analysis of Buck-Boost Converter Considering the Effects of Operational
Factors
Hadi Tarzamni (Sharif University of Technology), Farzad Tahami (Sharif University of
Technology), Mahmud Fotuhi-Firuzabad (Sharif University of Technology), Farhad
Panahandeh Esmaeelnia (University of Tabriz)
Abstract - In this paper, reliability of conventional pulse width modulation buck-boost
converter is analyzed, where the effects of duty cycle, input voltage, output power, voltage gain
and time duration are evaluated. These analyses are performed in both continuous and
discontinuous conduction modes and Markov process model is utilized to obtain the results. In
addition, mean time to failure of this converter is obtained with respect to the aforementioned
parameters. In this paper, detailed analyses of reliability in buck-boost converter with different
evaluation parameters are presented. Moreover, the plots of MATLAB software are prepared to
have complete evaluation in each operating state.
58
PC-13-60: paper 2- Comparative Analysis of the Conventional Magnetic Structure Pads for the Wireless
Power Transfer Applications
Behnam M. Mosammam (Amirkabir University of Technology), Navid Rasekh (Amirkabir
University of Technology), Mojtaba Mirsalim (Amirkabir University of Technology), Javad
Shokrollahi Moghani (Amirkabir University of Technology)
Abstract – Nowadays, Electric Vehicles (EV’s) are considered as a solution to help the
environmental issues and reducing the air pollutions. But charging and recharging of the
electric vehicles, using the conventional ways, have a lot of undeniable problems that have
caused EVs unpopular, even though the governments provide many subsidies and taxes to
resolve such programs. Hence, the Wireless Power Transfer (WPT) for charging the battery of
the EVs is presented to eliminate all the difficulties of the conventional ways such as Plug-in
topology. The critical point of the WPT’s design is the receiver/transmitter pads as well as the
magnetic parts of the system. Therefore, in this paper the conventional magnetic structure pads
are presented and compared to each other to suggest the best structure. The four constructions
of the pads that are investigated in this paper are the Double-D pad (DDP) and the Circular Pad
(CP) for the transmitter-side, and Bipolar Pad (BPP) and Double-D Quadrature Pad (DDQP)
for the receiver-side.
PC-13-185: paper 3- A Novel Multi-Objective Topology for In-Motion WPT Systems with an Input DG Source
Amir Babaki (Advanced Motion Systems Research Lab), Sadegh Vaez-Zadeh (Advanced
Motion Systems Research Lab, Center of Excellence on Applied Electromagnetic Systems),
Majid Ferdosian Moghaddam (Advanced Motion Systems Research Lab), Ali Zakerian
(Advanced Motion Systems Research Lab)
Abstract— On-road dynamic charging of electric vehicles with distributed generation (DG)
sources has emerged recently as a cost-saving means for modern transportation. The resonant
converter as a common WPT topology is not a suitable choice here due to several deficiencies.
In this paper, a novel low-frequency multi-objective WPT topology, based on loosely coupled
flayback converter with the compatible energy recovery circuit is proposed against the
restriction of resonant converter. In this system, an input DG source (photovoltaic (PV))
produces its maximum possible power to supply the EV according to the MPPT algorithm. The
remaining energy is stored in the back-up battery during each switching interval and can be
injected to the EV drive train, whenever the PV power is not in access. Extensive simulation
results using MATLAB-Simulink is presented to validate the proposed WPT topology and its
multi-stage control system.
59
PC-13-186: paper 4- Efficiency Optimization of a Dynamic Wireless EV Charging System Using Coupling
Coefficient Estimation
Ali Zakerian (Advanced Motion Systems Research Lab), Sadegh Vaez-Zadeh (Advanced
Motion Systems Research Lab, Center of Excellence on Applied Electromagnetic Systems),
Amir Babaki (Advanced Motion Systems Research Lab), Majid Ferdosian Moghaddam
(Advanced Motion Systems Research Lab)
Abstract— Dynamic Wireless Power Transfer (DWPT) systems are becoming an interesting
option for charging EVs in urban and suburban areas, due to its advantages. Since Efficiency of
these system is of major concern, maximizing transferred power efficiency is analyzed in this
paper. Optimization of load resistance is proposed in this paper by using a DC-DC buck
converter in the secondary side. Since the optimum load is a function of coupling coefficient
which may varies for moving vehicles, an estimation method is proposed to calculate it
dynamically. By using the estimated coupling coefficient, an optimum load equivalent
resistance and the corresponding buck duty cycle is calculated and applied to the converter by
PWM method to maximize the efficiency. In addition, a voltage regulation method is proposed
by adjusting the duty cycle of the primary side inverter. As a result, the load voltage is fixed at
its reference value and a constant power is delivered to the load even if coupling coefficient
changes. The proposed control method is applied to a DWPT system, where the simulation
results indicate the effectiveness of the proposed method.
PC-13-189: paper 5- Design and Analysis of a Modified Dual Phase Shift Control Method for a Wireless EV
Charger Considering Coupling Uncertainty
Majid Ferdosian Moghaddam (Advanced Motion Systems Research Lab), Sadegh Vaez-Zadeh
(Advanced Motion Systems Research Lab, Center of Excellence on Applied Electromagnetic
Systems), Ali Zakerian (Advanced Motion Systems Research Lab), Amir Babaki (Advanced
Motion Systems Research Lab)
Abstract— Wireless chargers emerged as effective means for increasing the safety and
reliability of EV charging systems. Wireless charging of an EV based on a dual active bridge is
studied here. It is shown that the conventional dual phase shift (DPS) control method imposes
high stresses on system components, especially when the coupling coefficient is unknown.
Such voltage and current stresses decrease the lifetime of power switches. Then, a novel DPS
method is proposed which is able to control the output power while limiting the stress on
components. The proposed method is investigated using MATLAB Simulink. It is proved that
the proposed controller guarantees the proper operation of the system for coupling coefficients
between 5% and 35%.
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PC-09-160: paper 6- Single-Switch Single-Magnetic Core High Step-up Converter with Continuous Input
Current and Reduced Voltage Stress for Photovoltaic Applications
Milad Heidari (Isfahan University of Technology), Hosein Farzanehfard (Isfahan University of
Technology), Morteza Esteki (Isfahan University of Technology)
Abstract— In this paper, a new single-switch step-up DC-DC converter with single-magnetic
core and continuous input current for photovoltaic applications is presented. The proposed
converter is obtained by integrating boost and Cuk converters so that only one switch and one
magnetic core is utilized to achieve high voltage gain. This topology reduces voltage stress
across the converter switch and diodes, and provides higher voltage gain in comparison to the
basic boost and Cuk converters. Thus, high-quality and low-voltage MOSFET at moderate duty
cycles can be used to improve the converter efficiency. Operating principles and experimental
results of the proposed converter are presented in this paper to demonstrate the validity of
theoretical analysis.
PC-09-165: paper 7- Controller Design of Paralleled Quasi-Z-Source Inverters with Battery for Application in
Grid-Connected Photovoltaic Power Generation System
Mehran Moslehi Bajestan (University of Birjand), Hamed Madadi (Islamic Azad University,
Neyshabur Branch), Mohammad Ali Shamsinejad (University of Birjand)
Abstract - In this paper, a control strategy for the paralleled quasi-Z-source inverters (qZSI)
with a battery applicable for grid-tie photovoltaic (PV) power generation systems, is presented.
The use of paralleled inverters in distributed generation (DG) applications has several
advantages, such as high degree of redundancy, ease of maintenance and high reliability. By
introducing the shoot-through states in the permissible switching states of the inverter bridge,
the qZSI can boost/buck the output voltage of PV panel in a wide range. Also, the energy
storage system, which is assisted with quasi Z-source network, provides the full use possibility
of PV power. The proposed control method can manage the battery power, track the PV
panel’s maximum power point, control the inverters output power with desired power factor
and equalize the amount of power injected by the paralleled inverters in the grid,
simultaneously. Also, the controller system is able to suppress both cross and zero-sequence
circulating-currents through a modification of the conventional control schemes. The validity
of the proposed PV system is proved by simulation results carried out using
MATLAB/Simulink.
PC-09-131: paper 8- A New Non-Isolated Multi-Input DC-DC Converter with High Voltage gain and Low
Average of Normalized Peak Inverse Voltage
Shahin Mohammadi (University of Tabriz), Morteza Dezhbord (University of Tabriz), Milad
Babalou (University of Tabriz), Mahmoodreza Eskandarpour Azizkandi (University of
Mohaghegh Ardabili), Seyed Hossein Hosseini (University of Tabriz)
Abstract – In this paper, a novel non-isolated multi-input DC-DC converter (MIC) with high
voltage gain has been presented. The presented topology comprises of simple high gain units.
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The main merits of the proposed topology are continuous current of input sources and
possibility of using input sources of different voltage-current characteristics. Duty cycle of
each unit can be specified independently and the amount of desired output voltage can be
achieved. This topology has a simple switching pattern and the switching frequency can be
selected high as well. The number of input units can be increased thus the stress of the switches
is decreased as the duty ratio can be selected lower for each unit. The proposed topology is also
appropriate for renewable energy sources’ applications and in order to validate the performance
of the aforementioned merits, two units of non-isolated multi-input DC-DC converter topology
has been simulated in PSCAD/EMTDC software. Simulation results confirm the valid
performance of the proposed topology.
PC-09-164: paper 9-
A New Variable Step-Size P&O Algorithm with Power Output and Sensorless DPC
Method for Grid-Connected PV System
Elahe Heydari (Tarbiat Modares University), Ali Yazdian Varjani (Tarbiat Modares
University) Abstract - One of the popular topologies specially for low cost grid-connected photovoltaic
systems is single-stage topologies. In these systems, the inverter is the only converter where
both maximum power point tracking algorithm and grid side controller will be applied to it.
Hence, the MPPT algorithm should be adapted with grid side controller for better transient
response and to remove the internal control loops. One of the most popular MPPT algorithms
and grid side controllers are P&O and direct power control, relatively. To combine them, an
P&O with power output should be used. However, the response speed of controllers especially
in single-stage system is very important. Therefore, since the dynamic of power is less than
current or voltage, a fast P&O algorithm with power output is needed to improve the transient
response of the system. In this paper, a variable step-size P&O algorithm with power output is
proposed. This controller automatically adjusts the power perturbation where the response
speed of the system, power oscillations and accuracy in steady state can effectively improve. In
addition, to reduce the hardware cost and size, a sensorless method is also presented for grid
side controller.
PC-09-113: paper 10- Optimal Robust Control of LCL-type Grid-Connected Voltage Source Inverters against
Grid Impedance Fluctuations
Sina Mohammadi (University of Zanjan), Mansour Ojaghi (University of Zanjan), Abolfazl
Jalilvand (University of Zanjan), Qobad Shafiee (University of Kurdistan)
Abstract - LCL filters are used in grid-connected voltage source inverters (GC-VSIs) due to
their lower cost and higher efficiency. These filters attenuate high order harmonics effectively;
however, the grid impedance fluctuations (GIFs) may cause resonance and system instability.
The GIF can reduce the resonance frequency to lower than a permissible threshold, then, the
resonance may happen and prevent some nonlinear loads from being fed. On the other hand,
very high resonance frequencies cause capacitor of the filter being actually open circuited.
Consequently, the nature of the filter changes and reduces the power quality of the network. In
this paper, considering the possible range for GIFs and using Kharitonov control theorem
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(KCT), the coefficients of the PI controller and the current feedback of the filter capacitor are
obtained simultaneously to ensure safe and desired operation of the GC-VSI against the GIFs.
As a result, the proposed closed loop system shows optimal response to variation of the
reference current. Genetic algorithm (GA) is used to determine optimal values of the
coefficients and the gain. Simulation results carried out in MATLAB/SIMULINK show
accuracy and effectiveness of the proposed method.
PC-10-112: paper 11-
Control Strategy of a Single Phase Active Power Filter with Adjustable DC Link
Capacitor Voltage for THD Reduction in Non-linear Loads
Amin Talebkhah (North Khorasan Science and Research Branch, Islamic Azad University),
Milad Samady Shadlu (Bojnourd Branch, Islamic Azad University), Seyed Majid Fatemi
(Islamic Azad University, Bojnourd Branch)
Abstract - The presence of nonlinear and unbalanced loads in the single phase networks
increases the harmonics and losses in power grid. The active power filters solve these
problems, and in addition to reducing any arbitrary harmonic component, it will eliminate the
possibility of resonance with the network. In this paper, an active power filter (APF) based on
voltage source converter (VSC) is used to reduce the THD contents of single phase grid current
which are applied to a non-linear load. A new hybrid hysteresis current control scheme with a
DC link capacitor voltage regulator based on conventional PI controller is proposed to generate
the gating signals of APF. The performance of the proposed controller in terms of reducing the
THD contents of grid current and power quality improvement is evaluated using
MATLAB/Simulink and also an experimental setup is implemented to confirm the simulation
results.
PC-01-124: paper 12-
Tapped Switched-Coupled-Inductors Γ-Source Inverter
Soroush Esmaeili (University of Guilan), Shokouh Karimi (University of Guilan), Alireza
Siadatan (University of Toronto), Ebrahim Afjei (Shahid Beheshti University), Atif Iqbal
(Qatar University)
Abstract – This paper introduces a novel tapped switched-coupled-inductors Γ-source inverter
(TSCL-ΓSI) with modified cell and high voltage boost ability. Unlike Γ-source inverter,
proposed topology draws a continuous current from dc source which eliminates huge inrush
current at start up. Compared with asymmetrical Γ-source inverter with continuous input
current, suggested network provides high voltage gain with smaller shoot-through duty cycle.
Hence, TSCL-ΓSI uses higher modulation ratio with reduced components stress and better
output power quality. Furthermore, modified TSCL cell leads to decrease damaging effects of
transformer leakage inductance by absorbing stored energy in windings. In comparison with
successful modified tapped switched-coupled-inductors quasi-z-source network (mTSCL-
qZSN), presented structure utilizes lesser number of windings turns which reduces costs and
size of the inverter. In the other words, the output voltage is raised by lowering coupled
inductors turns ratio. In addition, proposed network is able to operate in both buck and boost
mode, while previous switched-coupled-inductors quasi z-source networks just can boost the
input voltage. Finally, TSCL-ΓSI has common ground between the dc-link voltage and inverter
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bridge. Operation principle, theoretical analysis and simulation results are presented to verify
performance of the inverter.
PC-02-100: paper 13-
Simulation of a Multi-Level Resonant Flying-Capacitor Converter above Resonant
Frequency to Overcome Its Voltage Regulation Issue
Seyed Saeed Hashemi (Tarbiat Modares University), Atefeh Salehian (Tarbiat Modares
University), Reza Beiranvand (Tarbiat Modares University), Ali Yazdian (Tarbiat Modares
University)
Abstract - This paper presents a Flying-Capacitor converter above its resonant frequency
considering zero-voltage switching (ZVS) realization and voltage regulation issue due to wide
input voltage and output power variations. A new multi-level Flying-Capacitor (FC) dc/dc
converter is candidate among the other proposed topologies with lower power device count and
soft switching characteristics that results in lower electromagnetic interference and switching
losses. ZVS operation under the continuous conduction mode (CCM) operation has achieved
undeniable benefits in switching losses and therefore a higher efficiency. In the MOSFET-
based converters, the ZVS operation causes lower switching losses in contrary to the wide used
zero current switching (ZCS) approaches under the discontinuous conduction mode (DCM).
However, in this topology a natural ZCS operation of the diodes under the CCM condition is
occurred which impels even to higher efficiency, too. In addition, output voltage regulation has
been clearly revealed and when wide input voltage and output power variations are applied.
PC-02-53: paper 14- An Interleaved Diode-Capacitor High Step-Up Quasi-Resonant DC-DC Converter
Featuring Soft-Switching Characteristic
Saeed Kavehei (Tarbiat Modares University), Ali Yazdian Varjani (Tarbiat Modares
University), Reza Beiranvand (Tarbiat Modares University), Majid Zare (Tarbiat Modares
University)
Abstract - In this paper, a quasi-resonant high step-up dc-dc converter based on an interleaved
diode-capacitor structure is introduced and analyzed. High voltage conversion ratio can be
achieved by using a diode-capacitor network. Soft switching condition, including zero-voltage
switching (ZVS) or zero-current switching (ZCS), is resulted for all semiconductor power
devices by quasi-resonance technique created by input inductances of the converter along with
snubber capacitors across the switches. Reverse recovery problem of diodes is alleviated due to
ZCS condition. As a result, the switching losses have been reduced considerably and the
converter efficiency is improved. With soft switching characteristic, switching frequency can
be increased and subsequently the size of the passive components is decreased. Also, the
voltage-stress of switches is reduced by the series-connected structure in the high-voltage side.
Finally, the presented simulation results verify the features of the proposed topology.
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PC-08-194: paper 15- A New Control Method to Overcome Sympathy Between Transformers Using SSSC
Mohammad Rastegar (Jundi Shapur University of Technology), Mehdi Saradarzadeh (Jundi
Shapur University of Technology), Shahrokh Farhangi (University of Tehran)
Abstract—Sympathy phenomenon is caused by the interaction between the transformers.
Inrush current of transformers, especially in long transmission lines is unavoidable that can be
as high as 10 times of the transformer rated current lasting for a few cycles or more depending
on R/L in the primary side of transformer. This inrush current causes the saturation of available
parallel transformers in the line. This kind of magnetizing transient is called sympathy.
Sympathy has many effects on the power system like appearance of unsymmetrical voltage
sag, transient harmonics components and overvoltage, which disrupt the operation of
differential relays and also coordination of transformer overcurrent relays and affects the whole
protection system. In this paper, a new lateral application is proposed for a Static Synchronous
Series Compensator (SSSC) to overcome the inrush current and consequently tackles the
sympathy phenomena. The proposed control method detects the inrush current in the line by
the Sympathy Detection Unit and determines the mode of operation to inject the high
inductance series to the line. It operates independently from the switching-on instance. An 11-
level Cascaded H-bridge converter is placed in series to the line acting as SSSC in the normal
condition and a high impedance during energizing transformers. The simulation results show
the feasibility and the proper dynamic of the proposed control method in limiting the inrush
current and avoiding the sympathy for the connected transformers.
PC-08-125: paper 16- An Improved Control Strategy for DFIG Low Voltage Ride-Through Using Optimal
Demagnetizing method
Mahdi Jafari Harandi (K. N. Toosi University of Technology), Sahand Ghaseminejad Liasi (K.
N. Toosi University of Technology), Esmail Nikravesh (Electricity distribution company of
Hamedan), Mohammad Tavakoli Bina (K. N. Toosi University of Technology)
Abstract – Direct connection of doubly fed induction generators (DFIG) to electricity network
would cause overcurrent and DC link overvoltage during transient faults. One of the
widespread methods to cope with this problem is employing crowbar; using crowbar, however,
results in uncontrollability of both rotor and grid side converters. In this paper, using optimal
demagnetization method, duration of this uncontrollability has been reduced; then, by injecting
reactive current during fault, fault ride through is realized. The proposed method has been
validated by MATLAB/SIMULINK simulation for a 9 MW generator.
PC-07-36: paper 17- Design and Investigation of Single-Tuned Passive Filter in Distribution Networks Based
on Pareto Optimal Fronts
Javad Khajouei (Shahid Bahonar University of Kerman), Saeid Esmaeili (Shahid Bahonar
University of Kerman), Seyyed Mostafa Nosratabadi (Sirjan University of Technology)
Abstract – Since the utilization of nonlinear loads such as power electronic converters have
been increased and also because of the wide range of their usage and the creation of harmful
65
harmonics, active and passive filters must be used to eliminate the effect of harmonics. In this
paper, passive filters have been utilized because of fewer cost in terms of installation,
maintenance and repair compared with active filters. The purpose of the current study is to find
the optimal location of single-tuned passive filter and detect the size of its elements in
distribution networks by a multi-objective approach. The objective functions include the
reduction of network losses, initial investment cost and the improvement of the frequency
response on critical buses. In this problem limitations such as buses voltage profile and
harmonic distortion of the network are considered. To assess the proposed procedure, 33-bus
IEEE test distribution network is used. As results the amount of network losses, buses profile
voltage, and the network harmonic distortion are evaluated before and after the filtering and the
accuracy of the method is evaluated too.
PC-06-126: paper 18- An Ozone Generator Power Supply for Water Purification
Pouyan Pourhadi Abkenar (University of Tehran), Hossein Iman-Eini (University of Tehran),
Mohammad Hamed Samimi (University of Tehran), Alireza Bagheri (University of Tehran)
Abstract - In this paper, a high-voltage resonant power supply for ozone generation is
introduced. The proposed circuit includes a power switch, a resonant capacitor, and a step-up
transformer. In addition, it operates under the zero current switching (ZCS) condition which
results in higher efficiencies. The simulation results show a sinusoidal output pulse with peak
value of 8kV and 1.66us pulse width which is generated from 500V DC input voltage. A
hardware prototype with 150V DC input and 2.4 kV output pulse has been implemented. The
pulse repetition frequency is set to 15 kHz. Both the simulation and experimental results are
presented to validate the proposed converter and its operating principle.
PC-06-195: paper 19-
Operation of an Active Distribution Network with PV and Storage Battery and Vehicle
Charge Station and Modeling of Uncertainty with Copula Model
Roya Amooi (University of Guilan), Seyed Masoud Moghaddas-Tafreshi (University of Guilan)
Abstract - Recently, electrical power market as one of the most influential components of
countries’ economic worldwide, has experienced remarkable vacillations. With the advent of
paralleling and execution of restructuring in power market, some usual rules and patterns of
traditional power market should be accomplished in a way different than before. In this regard,
utilization of distribution networks as one of the most important parts of power systems due to
the presence of distributed generation sources such as solar and wind units have experienced
many changes. Moreover, the presence of electrical storage devices, as well as plug-in
vehicles, has caused active operation of distribution networks to gain more highlighted
attractions. In this paper, optimal operation of an active distribution system to participate in the
day-ahead wholesale market with the integration of solar panels, electrical storage devices, as
well as plug-in vehicles, has been investigated; while the uncertainty associated with the
behavior of electrical vehicles is modeled using the Capoula function. To solve the proposed
optimization problem, the optimization technique of the Imperialistic competitive algorithm is
proposed. The model was implemented on an IEEE standard 33 bus network. Simulation
results show the effectiveness of the proposed method.
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PC-05-157: paper 20-
Ultra High Step-up DC-DC Converter Based on Switched Inductor-Capacitor Cells
Sama Salehi (University of Tabriz), Neda Zahedi (University of Tabriz), Reza Kheirollahi
(Tarbiat Modares University), Ebrahim Babaei (University of Tabriz)
Abstract - In this paper, a high step-up dc-dc converter is proposed. The main feature of the
proposed converter is its flexibility in developing and achieving different high voltage gains.
This converter comprises of inductor-capacitor cells and with a higher number of cells, voltage
gain increases. The proposed converter's operation principle is based on charging in parallel
and discharging in series paths. Operation analysis and voltage gain and voltage stresses of
semiconductors are calculated and compared with other converters to illustrate the prominent
attributes of the proposed converter. Simulation results, which have been implemented via
PSCAD-EMTDC, are presented to validate the performance of this converter.
PC-05-56: paper 21- A New structure with new algorithm for Cascaded Multilevel Inverter with Reducing
Number of IGBT
Zahra Bayat (Applied science University), Ebrahim Babaei (University of Tabriz), Mina
Serajian (Ghaem University), Carlo Cecati (University of L’Aquila), Concettina Buccella
(University of L’Aquila)
Abstract--Cascaded multilevel inverters are usually used in a medium-voltage output. Hence,
the cascaded multilevel inverter has been declared as a vital alternative in the medium-voltage
inverter market. This paper proposes a novel structure for cascaded multilevel inverters. Also, a
new algorithm is proposed to determine the amount of resources which are used in the new
structure. The suggested structure has some advantages including: reduction in the number of
IGBT and switches, cost and installation area. Another advantage of the proposed topology is
lower variety of the values of dc voltage sources in comparison with conventional structures.
The capability of proposed structure in producing all output voltage levels is proved by
simulation result for a 17-level inverter.
PC-05-121: paper 22-
Comparison of Three-Point P&O and Hill Climbing Methods for Maximum Power Point
Tracking in PV Systems
Seyed Majid Fatemi (Islamic Azad University, Bojnourd Branch), Milad Samady Shadlu
(Islamic Azad University, Bojnourd Branch), Amin Talebkhah (Islamic Azad University,
Bojnourd Branch)
Abstract—Solar energy and photovoltaic (PV) systems will play an important role in the future
production market. One of the challenges in optimal operation of solar PV systems is the low
efficiency of these systems compared to fossil fuel production units. The reason is the sudden
changes in climate factors, including the temperature and intensity of radiation in the
67
environment. One of the solutions used to solve the low power efficiency problem in PV
systems is the MPPT techniques which have been widely investigated by many researchers. In
this paper, a new form of conventional Perturb and Observe (P&O) method named three-point
P&O is introduced and compared with Hill Climbing (HC) method under constant and variable
atmospheric conditions. The DC-DC converter is Boost which has an acceptable performance
in solar applications. The simulation results in MATLAB and experimental results indicate a
better performance of three-point P&O method in terms of output power fluctuations and
maximum power point tracking capability.
PC-05-204: paper 23-
A New Wireless Power Transfer Topology based on Quasi-Z-Source and LLC Resonant
Network with Low Input Current THD
M. S. Mahdavi (Amirkabir University of Technology), G. B. Gharehpetian (Amirkabir
University of Technology)
Abstract – Wireless power transfer (WPT) systems are power electronic converters which can
be installed under the road and charge the butteries of the electric vehicles. High total harmonic
distortion (THD) of the input current is an important challenge in WPT system design. In this
paper a new topology is proposed for WPT systems to reduce their input current THD. In the
proposed topology, a quasi-Z-source inverter (QZSI) is used in series with a LLC resonant
network. In addition to the DC voltage boosting, QZSI shapes the input current. The simulation
results show the performance of the proposed structure in THD reduction and power factor
correction in comparison with the conventional Z-source resonant converter.
EA-02-95: paper 24-
Reducing Variation of Switching Frequency in Finite-State Predictive Torque of Three-
Phase Induction Motor
Shirin Azadi (Islamic Azad University of Central Tehran Branch), S. Alireza Davari (Shahid
Rajaee Teacher Training University), Arya Aghili Ashtiani (Tafresh University), Cristian
Garcia (Universidad Andres Bello), Jose Rodriguez (Universidad Andres Bello)
Abstract - In this research, a new technique is applied to the predictive direct torque control of
the induction motor in order to reduce the variation of the switching frequency. The method is
a modification of the finite set model predictive control (FS-MPC). In this method, the
switching options are examined in a cost function and the best option is selected based on the
minimum cost function. Since the switching technique in FS-MPC is direct switching without
using a modulator, the switching frequency will be variable. In the proposed method, the
periodic selection of the active and zero voltage vector is used to reduce the variation of the
switching period. Thus, the zero voltage is mandatorily exerted after an active voltage and vice
versa. With this method, the cost function is only examined for the active voltage vectors and
the zero voltage is selected for the next control interval. This manner is repeated in the whole
algorithm. The proposed method is evaluated by simulation via MATLAB/Simulink. The
results showed that the proposed method reduced the variation of the switching frequency and
it was stable for the different operating point.
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PC-05-43: paper 25-
Phase-Shifted Half-Bridge Resonant Inverter for Driving Cooker Magnetron
Abolfazl Nasiri (Azarbaijan Shahid Madani University), Mohammad Reza Banaei (Azarbaijan
Shahid Madani University), Somayyeh Rahimi (Azarbaijan Shahid Madani University)
Abstract—This paper presents a phase-shifted half-bridge resonant inverter 1.6 kW (4 kV, 400
mA) for driving a cooker magnetron. A cooker magnetron is a vacuum lamp which works as a
self-exciting microwave oscillator in the low power range. In the presented High Voltage
Power Supply (HVPS), by controlling the switching timing and the phase-shifting of the on-
state the switching losses decreased. Also, using the series-resonance circuit has provided the
condition of soft switching (ZVS-ZCS). The power supply, depending on the required power,
can control the peak and average power in minimum-loss condition. The HVPS samples the
magnetic current of the transformer and then phase-shifts the switching and then balances the
magnetic current of the transformer. The maximum power of a microwave cooker is 1600w
and its average power is 200-400 W, which is controlled according to on-state times of the
inverter. Other advantages of the proposed design are the simplicity of the power circuit,
reduction in the number of switching elements, switching losses, and the leakage inductance of
the power transformer. The design results have been simulated and verified through the
MATLAB software.
PC-05-127: paper 26-
A New Driving Method for an Oven Magnetron Using a Soft Switching Active Clamp
Fly-back Converter
Abolfazl Nasiri (Azarbaijan Shahid Madani University), Ali saadat saadatabadi (Eslamshahr
Branch, Islamic Azad University)
Abstract—This paper presents a resonant active clamp fly-back converter 1.6kW (4kV, 0.4A)
for driving an oven magnetron. An oven magnetron is a vacuum lamp which works as a self-
exciting microwave oscillator in the low power range. In the presented a high gain boost fly-
back converter is used to achieve High Voltage Power Supply (HVPS). An active clamp
topology was utilized to decrease the main switch stress. Also a phase-shifted technique is
proposed to reduce the maximum flux density of the magnetic core. In addition, using the
series-resonance circuit has provided the condition of soft switching. The power supply,
depending on the required power, can control the peak and average power in minimum-loss
condition. The instantaneous power of a microwave oven is 1600 W and its average power is
200-400 W, which is controlled according to on-state times of the converter. Other advantages
of the proposed design are the simplicity of the power circuit, reduction in the number of
switching elements, switching losses, and the leakage inductance of the power transformer.
The design results have been simulated and verified through the PSIM software.
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Session D1
Power Supplies and Energy Storage Systems
Thursday, 14 February 13:30 – 15:00, Room 104
Session Chairs: Dr. Eliseev, Prof. Farkhadov
PC-13-48: paper 1- A Novel Triple Quadrature Pad for Inductive Power Transfer Systems for Electric
Vehicle Charging Bita Esmaeili Jamakani (Shahid Beheshti University), Ebrahim Afjei (Shahid Beheshti
University), Ali Mosallanejad (Shahid Beheshti University)
Abstract – This paper proposes a novel Inductive Power Transfer (IPT) pad called Triple
Quadrature Pad (TQP) consisting of three decoupled coils controlled independently as a
primary pad with various excitation modes to enhance tolerance to horizontal displacement as
well as air-gap variations. Operation of this pad is compared with Bipolar Pad (BPP) as the
most effective IPT pad when used with Double-D Pad (DDP) and Circular Pad (CP) as
polarized and non-polarized secondary pads, respectively, to show interoperability between
different magnetic topologies. In addition, a variable excitation mode based on relative phase
control of these three coils is applied which makes power transmission in large lateral
misalignments. TQP is designed to maintained leakage magnetic flux below ICNIRP
guidelines. Uncompensated power and coupling coefficient of most effective excitation modes
as function of lateral displacement of both TQP and BPP used with DDP and CP as secondary
pads are compared and power transferability of TQP to maintain required coupling coefficient
in various air-gap have been also investigated.
PC-06-210: paper 2-
A Comprehensive Time-domain-based Optimization of a High-Frequency LLC-based Li-
ion Battery Charger Siamak Karimi (Sharif University of Technology), Farzad Tahami (Sharif University of
Technology)
Abstract – LLC resonant converter as a promising solution for battery chargers has ability to
adjust its output voltage during Constant Current and Constant Voltage. However, its operation
mode would change based on switching frequency change. Therefore, for efficiency-oriented
optimizations in battery charger applications, the one-pointed efficiency is not an appropriate
objective. To this end, in this paper, a multi-pointed averaged efficiency is considered for
optimization along with the transformer and output capacitor volume. Another factor of a
proper design for wide output range LLC is the converter peak voltage gain that is calculated
based on accurate method. The efficiency calculations are carried out by using time-domain-
based analysis for every operation points. Regarding dead-time, a worst case is realized during
the charging profile. At last, a 1kW 400V:48V battery charger is designed with this procedure,
and verified by simulation.
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PC-06-168: paper 3-
Non-Isolated Three Port DC-DC Converter with Soft Switching Technique Neda Zahedi (University of Tabriz), Sama Salehi (University of Tabriz), Seyed Hossein
Hosseini (University of Tabriz)
Abstract - In this Paper, a three-port DC-DC boost converter with soft switching is proposed.
The suggested converter provides a unidirectional power port for input power supply and a
bidirectional power port for energy storage element in a single structure. Supplying output load
and charging/discharging of the battery can be done through the input source. Both switches
used in this converter are turned on in zero voltage switching (ZVS) mode; thus, the loss of
switching is reduced significantly. For soft switching, a lossless active snubber is used. A
simple controller is used for power management, which will provide continuous power
injection to the load. In this converter, based on the power demand in the load, three different
operational modes are introduced, which every three of them are studied in this paper and the
relating simulation results are presented.
PC-06-71: paper 4-
A Series Resonant Cell Equalizer Circuit for Series-Connected Li-Ion Battery String Saeed Ghasemzadeh (Tarbiat Modares University), Reza Beiranvand (Tarbiat Modares
University), Ali Yazdian Varjani (Tarbiat Modares University)
Abstract— Cell equalizers are used for series-connected lithium-ion battery to eliminate
voltage imbalances that reduce capacity and lifetime of the battery pack. The proposed
converter, has fewer components compared to the conventional topologies, so it can reduce the
circuit complexity and any number of series connected cells could be used in a string without
any issues. Further, operation at a fixed switching frequency is possible. The basic principle
operation of the circuit is explained, in details. The standard deviation of cell voltages at the
end of the equalization process is 5 mV. Simulation results for balancing four and twelve
lithium-ion batteries pack are presented to verify the operation of the circuit .
PC-06-127: paper 5-
Design & Implementation of 3 kW Single-Phase BESS Using ARM & FPGA M. Jokar (MAPNA Electric & Control Engineering & Manufacturing Co.), P. Ghani (MAPNA
Co.), S. Babaei (MAPNA Co.), H.R. Hafezi (MAPNA Co.), M. Abbasi (MAPNA Co.), R.
Sadeghi (MAPNA Co.)
Abstract— The purpose of this paper is to design and implementation of a battery energy
storage system (BESS) for residential application. BESS Power circuit consists of a two-stage
bidirectional DC-DC converter and a full-bridge DC-AC single-phase inverter. In this paper, a
proportional-resonant (PR) controller with harmonic cancellation is used as the grid-connected
inverter current controller. This method has the ability to control active and reactive injected
power to grid with standard total harmonic distortion (THD < 5%). The BESS is simulated
71
using Simscape library of MATLAB and is implemented using ARM and FPGA. Both the
simulation and the experimental results prove the satisfactory performance of the BESS.
PC-06-102: paper 6-
Stochastic Smart Charging of Electric Vehicle for a Smart Home with PV Penetration M. Yousefi (University of Aalborg), N. Kianpoor (University of Aalborg), A. Hajizadeh
(University of Aalborg), M. Soltani (University of Aalborg)
Abstract– Using electric vehicles (EVs) in residential homes integrated with solar photovoltaic
(PV) array can address many problems associated with environmental issues and energy
demand. EVs are useful as long as they utilized with the smart energy system (SES) to
optimally and smartly charge the EV batteries. In order to improve the SES performance for
optimally and effectively charging the vehicle, the impact of uncertainties and random
parameters have to be considered in the EV models. Furthermore, online control methods like
model predictive control (MPC) should be used to eliminate the effect of the error
uncertainties and random parameters model on the system performance during the actual
operation. In this paper, the EV departure time and required energy consumption during
driving are modeled by Markov chain and conditional probability. Also, the PV performance
and home load demand are modeled by PVwatt model and adaptive neuro-fuzzy inference
system (ANFIS) respectively. Afterward, an MPC is designed to optimally charge the EV,
while maintaining the desired battery energy level. The simulation is performed and the results
demonstrate the effectiveness and enhancement of the proposed method.
Session D2
PV Converters II
Thursday, 14 February 13:30 – 15:00, Room 106
Session Chairs: Dr. Mardaneh, Dr. Zolghadri PC-09-197: paper 1-
Virtual RL Damping and Harmonic Suppression for Current-Source Inverter Based
Photovoltaic Systems M. Ali Azghandi (university of Sistan and Baluchestan), S. Masoud Barakati (university of
Sistan and Baluchestan)
Abstract - This paper proposes a virtual RL damper in series with the passive filter inductor of
the grid-connected current-source inverter (CSI) based photovoltaic (PV) systems. The virtual
damper actively applies a supplementary feedback from the inductor current to the pulse-width
modulator via a proportional-derivative (PD) controller. The details of the proposed PD
controller and its practical design are also presented in this paper. Theoretical analysis and
simulation results demonstrate that the proposed control strategy adequately suppresses the
current oscillations and mitigates the low-order harmonics.
72
PC-09-130: paper 2- A new High Step-up Three-Port DC-DC Structure for Hybrid PV/Battery Energy
Systems Morteza Dezhbord (University of Tabriz), Milad Babalou (University of Tabriz), Vafa
Marzang (University of Tabriz), Peyman Alavi (University of Tabriz), Seyed Hossein Hosseini
(University of Tabriz), Shahin Mohammadi (University of Tabriz)
Abstract - In this paper, a new high step-up three-port dc-dc converter using one PV panel and
a battery as a storage element is presented. Three power switches, one single inductor and one
coupled inductor are employed in the proposed converter. The voltage gain of the proposed
topology is more than conventional three-port converters. Using one unidirectional and one
bidirectional inputs make the proposed topology suitable candidate for hybrid power system.
Controlling state of charge (SOC) for battery, and regulating the output voltage can be
achieved by controlling duty ratios of the switches. The PV power source can supply power to
the load and either charge or discharge the storage element individually or simultaneously. In
addition, the battery is capable to supply the load without PV source. The steady-state analysis
of the proposed converter is discussed completely. Finally, the validity of the proposed
converter is verified by simulation results.
PC-09-7: paper 3-
A Single-Phase Grid-Connected PV Microinverter With Very Low DC Bus Capacitance,
Low THD, and Improved Transient Response Farshad Bahraini (Iran University of Science & Technology), Adib Abrishamifar (Iran
University of Science & Technology), Abdolreza Rahmati (Iran University of Science &
Technology)
Abstract - In single-phase photovoltaic microinverters, there is a double frequency ripple on
the DC bus voltage that causes harmonics and reduces power factor. In order to reduce this
ripple, large electrolytic capacitors which have short lifetimes are often used at the DC bus. To
increase the lifetime of microinverters, it is necessary to replace electrolytic capacitors with
thin film capacitors which have long lives and low capacitance. By decreasing the capacitance,
the amplitude of the double frequency ripple on the bus voltage increases so the common bus
voltage controller (PI) cannot solve the tradeoff between the output current THD and the bus
voltage fluctuations. In this paper, by using the proposed control method, a microinverter is
designed and simulated so that this tradeoff has been solved without using additional
hardware. This microinverter is connected to the grid (220 V, 50 Hz). It has a very small 20 µF
bus capacitor. The bus voltage has a negligible overshoot in response to an input power step of
200 W. THD of the injected current into the grid is 0.44% at 250 W output power. The
effectiveness of the proposed method is validated by simulation results in Matlab-Simulink
software.
73
PC-09-23: paper 4- A Stable Power Reserve Control Method in Photovoltaic Systems Using I-V Curve
Characteristics Farshad Soltanian (Isfahan University of Technology)
Abstract - Photovoltaic power plants usually work in maximum power point tracking (MPPT)
mode to maximize the output power that deliver to the grid. By increasing the number of
installed PV plants, new challenges have emerged in the system such as overloading,
overvoltages, and operation during voltage disturbances. So the need for increased ancillary
services imposes power reserves in the photovoltaic systems. In this paper, a stable algorithm
is used to operate in constant power generation (CPG) mode at the right side of the MPP
without any instability problems by using I-V characteristic of the PV panel. A 100 KW PV
system has been simulated in MATLAB/Simulink and the operation under a fast change in
irradiance has been considered.
PC-09-150: paper 5- An Improved Three-Input DC-DC Boost Converter for Hybrid PV/FC/Battery and
Bidirectional Load as Backup System for Smart Home Behnam Zamanzad Ghavidel (University of Tabriz), Ebrahim Babaei (University of Tabriz),
Seyed Hossein Hosseini (University of Tabriz)
Abstract - An improved non-isolated three-input DC–DC boost converter is proposed in this
paper. The proposed topology has the capability of optimizing the energy conversion within
the smart homes. The recommended structure is designed for flexible energy systems such as
smart homes, smart cities, and electrical vehicles. The suggested structure has employed a
boost type converter as well as multi-input and single output (MISO) converter along with
renewable sources. The proposed converter consists of two unidirectional input power ports
and two bidirectional ports for a storage element in an integrated structure. The proposed
converter has several input sources with different voltage levels which are fixed at mid voltage
ranges. Also, it includes a step-up gain to boost voltage to higher ranges by a gain cell. In
order to optimally supply the output load and charge or discharge the battery storage,
photovoltaic (PV) and fuel cell (FC) along with bidirectional loads could be exclusively or
simultaneously employed as power resources. The main feature of the proposed converter is
presented as follows: flexible bidirectional load can be charged at home during the daytime,
while it could be discharged at nights when the demand is the maximum in which the system is
usually faced with overload. To verify the performance of the proposed structure, simulations
are carried out using PSCAD/EMTDC software and the results are presented to prove the
practicality of proposed algorithm in covering renewable resources and dynamically managing
energy consumption.
74
PC-09-25: paper 6- Analysis and Design of a New Extendable Sepic Converter with High Voltage Gain and
Reduced Components for Photovoltaic Applications Rasoul Shalchi Alishah (University of Tabriz), MirYahya Hasani (Islamic Azad University of
Tabriz), Seyed Hossein Hosseini (University of Tabriz), Kent Bertilsson (Mid-Sweden
University), Milad Babalou (University of Tabriz)
Abstract - In photovoltaic applications, a DC-DC converter is required to increase the output
voltage of the photovoltaic system. In this paper, a new extended SEPIC converter with the
capability of high voltage gain for photovoltaic applications is introduced. The proposed
topology includes an extended switched-capacitor converter along with one SEPIC converter.
The extended switched-capacitor converter operates with a constant conversion gain while the
SEPIC converter is controlled by the Duty Cycle to extract maximum power from PV panel.
Reduction of the number of power switches and capacitors are the most advantages of the
proposed topology. Also, the input current of proposed topology is continuous which is
suitable for PV applications. Finally, the performance of the proposed converter is verified by
simulating in the PSCAD/EMTDC simulation software.
Session D3
DC-DC Converters II
Thursday, 14 February 13:30 – 15:00, Room 108
Session Chairs: Prof. Schanen, Dr. Tahami
PC-09-22: paper 1- A Soft-Switched Ultra High Gain DC-DC Converter with Reduced Stress voltage on
Semiconductors Milad Babalou (University of Tabriz), Morteza Dezhbord (University of Tabriz), Rasoul
Shalchi Alishah (University of Tabriz), Seyed Hossein Hosseini (University of Tabriz)
Abstract – In this paper, a new non-isolated high gain dc-dc converter based on coupled
inductor is introduced. The proposed converter is comprised of two boost converters and two
voltage multiplier cells (VMC). In comparison with recently presented ultra high step-up dc-dc
converters, the voltage stresses on semiconductors of proposed converter are reduced along
with increasing of the voltage gain. In addition, all used MOSFETs in the proposed converter
are turned-on under zero voltage and zero current switching (ZVZCS) condition. Moreover, all
diodes are turned-off under zero current switching (ZCS) condition. Therefore, the switching
loss of presented converter is reduced. These factors are caused the proposed converter
become a good choice in comparison with traditional high gain dc-dc converters. The steady-
state analysis, design consideration and simulation results of the typical 40V/1100V, 490W,
25kHz converter are given.
75
PC-09-136: paper 2- A Single-Switch High Step-Up DC-DC Converter Based on Integrating Coupled
Inductor and Voltage Multiplier Cell for Renewable Energy Applications Mahmoodreza Eskandarpour Azizkandi (University of Mohaghegh Ardabili), Farzad
Sedaghati (University of Mohaghegh Ardabili), Hossein Shayeghi (University of Mohaghegh
Ardabili), Morteza Dezhbord (University of Tabriz)
Abstract - In this paper, a high step-up, non-isolated, single switch, coupled inductor based
DC-DC converter is presented for renewable energy applications. The proposed structure
consists of a coupled inductor and two voltage multiplier cells in order to obtain high voltage
gain. The passive clamp that is connected to the main power switch recovers the leakage
inductance energy of the coupled inductor and limits the voltage spike on the switch.
Therefore, low on-state resistance of the main switch can be adapted to reduce the conduction
loss. The advantages such as high voltage gain without a large duty cycle, a low turn ratio for
the coupled inductor, low voltage stress on the switch and diodes, leakage inductance energy
recovery and high efficiency make the presented converter suitable for renewable energy
applications. The steady state analysis and voltage stress of the semiconductors of the
converter are discussed in detail. Finally, simulation results in PSIM software have been
presented to verify the performance of the proposed converter.
PC-09-203: paper 3- A High Conversion Non-Isolated Bidirectional DC-DC converter with Low Stress for
Micro-Grid Applications Haleh Jahanghiri (Azarbaijan Shahid Madani University), Somayyeh Rahimi (Azarbaijan
Shahid Madani University), Ayda Shaker (Azarbaijan Shahid Madani University), Ali Ajami
(Azarbaijan Shahid Madani University)
Abstract— This paper proposes a common ground non-isolated bidirectional DC-DC
converter for micro-grid applications. The proposed converter consists of four main switches
with their body diodes, three inductors, and four capacitors. Simple structure, wide voltage
gain range, low voltage stress of the switches and common ground between the input and the
output are advantages of the proposed converter. Also, the proposed converter provides high
step-up/step-down voltage gain. Regarding the simple structure, the control strategy of the
proposed converter is easy. The steady-state analysis in both directions, voltage stress across
the power switches and the comparison with other bidirectional converters are discussed in this
paper. Finally, simulation results are presented to validate the analysis of the proposed
converter.
76
PC-09-187: paper 4- Soft-Switching Isolated Dual Active Bridge Bidirectional DC-DC Converter with Simple
Structure Hossein Asgari (Isfahan University of Technology), Milad Heidari (Isfahan University of
Technology), Ehsan Adib (Isfahan University of Technology)
Abstract—In this paper, a soft-switching isolated dual active bridge bidirectional DC-DC
converter is proposed. Bidirectional DC-DC converters have many applications for electrical
energy storage systems. Dual active bridge topologies are the basic structure of this application
due to their higher power density and efficiency. But the leakage inductance of this converter
leads to increased conduction and switching losses and reduces efficiency. Some techniques
such as active snubber, active clamp and resonant circuits are applied to provide soft-switching
condition for this converter in recent researches. However, additional elements and variable
frequency are the main disadvantages of these techniques. In the proposed converter, the soft-
switching condition is achieved by use of phase shift control with no auxiliary switch or
circuit. The switching frequency and resonance frequency are equal in this converter which
results in simplicity of control circuit. In this study, the proposed converter and operating
modes are illustrated and experimental results are presented to verify theoretical analysis.
PC-09-54: paper 5- Symmetric Extendable Ultra High Step-Up Non-Isolated DC-DC Converter Vafa Marzang (University of Tabriz), Peyman Alavi (University of Tabriz), Morteza Dezhbord
(University of Tabriz), Seyed Hossein Hosseini (University of Tabriz), Naghi Rostami
(University of Tabriz)
Abstract – In this paper a high step up non isolated DC-DC converter with extendable
topology is proposed. This converter is symmetric and by using this structure it can be possible
to achieve high voltage gain in low duty cycle range. This converter consists of Active Passive
Inductor Cell (APIC) and a Voltage Multiplier Cell (VMC). In addition to increasing voltage
gain, the VMC decreases voltage stress on the switches and diodes. Operational modes and
steady state analysis of proposed converter will be discussed completely, also voltage gain and
voltage stress on the switches and diodes will be formulated. Different components will be
designed for example output capacitor will be designed in order to decrease output voltage
ripple. Voltage gain and voltage stress on the switches will be compared with related structure
to illustrate advantages of proposed converter. In order to verify theoretical analysis of
proposed converter will be simulated in PSCAD and results of this simulation will be analyzed
completely. In this simulation input voltage is equal to and provides power in output.
PC-09-55: paper 6- New Interleaved Structure with High Voltage-Gain and Low Voltage-Stress on
Semiconductors Peyman Alavi (University of Tabriz), Vafa Marzang (University of Tabriz), Erfan Nazari
(University of Shahid Beheshti), Moreteza Dezhbord (University of Tabriz), Ebrahim Babaei
(University of Tabriz)
77
Abstract - In this paper a high voltage-gain interleaved structure for DC-DC converters is
proposed. This structure is proposed to achieve high voltage-gain with reasonable number of
elements and low voltage-stress range. Also in proposed converter input current is continuous
and it's ripple is low. In this structure voltage gain is affected by duty cycle. The number of
elements in proposed converter is lower than those in some of the same converters. In this
study proposed converter is analyzed completely and all relations in different modes will be
achieved. In order to realize improvement in this converter, proposed converter will be
compared with related structures.
Session D4
Special Applications II
Thursday, 14 February 13:30 – 15:00, Room 110
Session Chairs: Dr. Rahideh, Dr. Samet
PC-12-32: paper 1- Comparative Study of Heatsink Volume and Weight Optimization in SST DAB cells
Employing GaN, SiC-MOSFET and Si-IGBT Switches Hamzeh Beiranvand (Lorestan University), Esmaeel Rokrok (Lorestan University), Marco
Liserre (Christian-Albrechts-Universität zü Kiel)
Abstract –Heatsink is a passive component for transferring heat due to power losses from
power devices such as semiconductor switches in power electronic converters. Emerging
semiconductor technologies such as GaN and SiC MOSFETs present lower conduction and
switching losses than conventional Si devices which can led to increase efficiency and
reduction of weight and volume. In this paper, comparative evaluation of the heatsink weight
and volume optimization based on Si IGBT, SiC MOSFET and GaN is done in a dual-active-
bridge (DAB) as a building block in solid-state transformers. A 5 kW DAB converter as one of
the 16 modules in an 80 kW ISOP converter is considered in optimization. Heatsink design is
done for three semiconductor types. Results show that GaN achieves lowest power losses
while its heatsink size and volume is limited by the thermal properties of the GaN chip.
PC-09-163: paper 2- A New High Step-up Gain SEPIC Converter for Renewable Energy Applications Sajad Arab Ansari (Amirkabir University of Technology), Amirreza Mizani (Iran University of
Science and Technology), Javad Shokrollahi Moghani (Amirkabir University of Technology),
Abbas Shoulaie (Iran University of Science and Technology)
Abstract –A new high step-up gain SEPIC-based converter is proposed in this paper. The
introduce converter benefits from numerous advantages, namely very high voltage gain, non-
inverting output voltage, high efficiency, and simple control system. Moreover, due to the fact
that high voltage gain is provided without using any transformer and coupled-inductor, there is
no voltage spike across the switches during the turn-off process. Furthermore, the input current
of the presented converter is continuous, hence it is suitable for renewable energy
78
applications. The operating principle and steady-state analysis of the introduced converter are
investigated in detail. Finally, the performance of the proposed converter and theoretical
analysis are validated by the simulation and experimental results.
PC-08-9: paper 3- Static Modeling of the IDC-PFC to Solve DC Power Flow Equations of MT-HVDC Grids
Employing the Newton Raphson Method Mehdi Abbasipour (Amirkabir University of Technology), Jafar Milimonfared (Amirkabir
University of Technology), Seyed Saeid Heidary Yazdi (Amirkabir University of Technology),
Kumars Rouzbehi (Loyola University Andalusia)
Abstract - Power transmission technology of the offshore wind farm (OWF)s is usually based
on HVDC interconnection. Power flow controller (PFC)s are flexible power transmission
devices which play important role in the DC power flow (PF) control especially in
contingency conditions. So, these devices should be modeled to solve related MT-HVDC grid
DC PF equations. In this context, an interline DC PFC (IDC-PFC) is considered as a sample
PFC for modeling due to its advantages in comparison to other series and cascaded PFCs. The
novelty of this work is solving the DC PF problem of the IDC-PFC compensated MT-HVDC
grids by modeling of the IDC-PFC and employing the Newton-Raphson (N-R) method. An
eight-bus MT-HVDC test grid is considered to authenticate the presented IDC-PFC modeling
and verify the accuracy of the DC PF results obtained by employing the N-R method. The
obtained static results verify the accuracy of the presented IDC-PFC modeling and the
performance of the N-R method in solving flexible MT-HVDC grid PF equations. Hence, it is
suitable to integrate them in the future power system analysis softwares.
PC-04-45: paper 4- Single-Source Transformerless Multilevel Inverter with Boosting Ability Using Two DC-
DC Regulators
Hossein Khoun Jahan (University of Tabriz), Amin Mohammadpour Shotorbani (University of
British Columbia), Naser Vosoughi (University of Tabriz), Ali Farzamnia (Universiti Malaysia
Sabah), Behnam Mohammadi Ivatloo (University of Tabriz), Seyyed Hossein Hosseini
(University of Tabriz)
Abstract—In some application voltage source inverters (VSIs), such as machine drives, the
need for a controller with a high bandwidth necessitates employing a multilevel inverter to
avoid large output filters. The aforementioned requirements could be met by employing a
comprehensive converter. The present work, introducing a single source boosting multilevel
inverter, tries to address the problem. The proposed transformerless topology, using only one
single DC source, realizes a 13-level staircase AC voltage. The peak value of the output
voltage of the proposed topology is three times higher than that of the conventional VSI.
Performance and feasibility of the proposed boosting multilevel VSI is evaluated using
Simulation results and experimental verifications using a laboratory built prototype.
79
PC-04-13: paper 5-
A New Fault Tolerant Method for Cascaded H-Bridge Inverters Based On Peak
Reduction Post-Fault Control Method Reza Babaloo (Islamic Azad University), Manuchehr Fathi (Sharif University of Technology),
Ebrahim Afjei (Shahid Beheshti University), Alireza Siadatan (University of Toronto)
Abstract— This paper concentrates on improving the performance of symmetric cascaded H-
bridge multilevel inverters under faulty conditions in term of decrease in common mode
voltage. A flow chart is proposed to determine the optimal post-fault states among all available
states, which have the equivalent magnitude of the output line-line voltages. Hence, the
exclusive process is given to select the optimal state and calculate the references of phase
voltage for applying to PWM block. This technique can cause to decrease the common mode
voltage and eliminate it under some desired output line-line voltages. Finally, the feasibility of
the proposed method is confirmed through simulation analysis for various faulty operating
states.
PC-02-166: paper 6- A High Voltage Variable Inductor LCC Resonant Converter with High Power Factor
over Wide Load Range
Morteza Aghaei (Sharif University of Technology), Ramin Ayoubi (Sharif University of
Technology), Shahriyar Kaboli (Sharif University of Technology)
Abstract— High voltage power supplies (HVPS) are widely used to supply vacuum tubes.
Regarding to their high efficiency, resonant converters are a choice of HVPS structure. In this
application, HVPS is faced with wide variation of the load power. On the other hand, output
voltage regulation over wide load range is essential. However, there are several problems
dealing with resonant converters such as output voltage regulation and efficiency of the
converter over wide range of load variation. In this paper, a control method for series-parallel
resonant converter is presented. This method regulates the output voltage of the converter over
load variation range. A variable inductor placed as the series inductor in the resonant tank
achieves constant maximum power factor. Output voltage is regulated by phase-shift method
and the switching frequency is constant. Experimental results are presented to confirm the
proposed method.
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Authors List
A
Abapour,Mehdi, 55
Abbaszadeh,K., 26, 35
Abbasi,Milad, 21, 51
Abbasi,M., 69
Abbasi Aghdam Meinagh,Farhad , 26
Abbasipour,Mehdi, 78
Abdollahi,Maryam, 31
Abdulov,Alexander, 53
Abootorabi Zarchi,Hossein, 28, 39, 48, 54
Abramenkov,Alexander, 53
Abrishamifar,Adib, 46, 72
Acikgoz,Hakan, 29
Adib,Ehsan, 76
Adnani,Kambiz, 20
Afjei,Ebrahim, 18, 27, 32, 32, 62, 69, 79
Afrasiabi,Shahabodin, 28
Afrasiabi,Mousa, 28
Aghaei,Morteza, 79
Aghazadeh,Hadi, 18
Aghili Ashtiani,Arya, 67
Ahmadi,Saman, 19
Ahmadzadeh,Taher, 52
Ajami,Ali, 75
Akbarimajd,Adel, 42
Alavi,Peyman, 72, 76, 76
Alipour-Sarabi,R., 48, 49
Alizadeh,Milad, 30
Allahabadi,Sara, 23
Allahyari,Arash, 29
Ameziani,M., 21
Amirian,Mohammad, 18
Amooi,Roya, 65
Arab Ansari,Sajad, 77
Arab Markadeh,Gholamreza, 39
Ardebili,Mohammad, 18
Ardestani,Masoud, 32
Asgari,Hossein, 76
Ayaz Khoshhava,Mojtaba, 28
Ayoubi,Ramin, 55, 79
Azadi,Shirin, 67
Azghandi,M. Ali, 71
Azizi Moghaddam,Hossein, 34,46
B
Babaei,Ebrahim, 26, 37, 51, 52, 66, 66, 73,
76
Babaei,S., 69
Babaki,Amir, 58, 59, 59
81
Babaloo,Reza, 53, 79
Babalou,Milad, 60, 72, 74, 74
Babazadeh,Yaser, 37
Bagheri,Alireza, 65
Bagheroskouei,Farhad, 26
Baghramian,Alfred, 26
Bahraini,Farshad, 72
Baktash,Amir, 30
Banaei,Mohammad Reza, 68
Barakati,S. Masoud, 71
Bayat,Zahra, 66
Bayati Booin,Mohammad, 34
Beiranvand,Hamzeh, 29, 41, 50, 77
Beiranvand,Reza, 42, 51, 63, 63, 70
Bertilsson,Kent, 74
Boussey,Thomas, 20
Buccella,Concettina, 66
C
Cecati,Carlo, 66
Chazal,Hervé, 22
Cheraghi,Mohsen, 34
Choupan,Reza, 36, 56
Chulaee,Yaser, 48
Czerniewski,Blazej, 54
D
Daryabeigi,Ehsan, 54
Dastfan,Ali, 40
Davari,S. Alireza, 38, 67
Davoodi,Amirali, 43
Dehghan,Seyed Mohammad, 45
Dehghanpour,Ehsan, 35
Dejamkhooy,Abdolmajid, 42
Dezhbord,Morteza, 60, 72, 74, 75, 76, 76
Doaee,Parisa, 51
Driss,Sina, 41
Drissa Diarra,Zié, 22
E
Eghbali,Omid, 37
Eliseev,Alexander, 53
EshratAbadi,Fariborz, 21
Eskandarpour Azizkandi,Mahmoodreza, 36,
60, 75
Esmaeili,Soroush, 52, 62
Esmaeili,Saeid, 64
Esmaeili Jamakani,Bita, 69
Esteki,Morteza, 60
Etemadi,Mohammad, 26
Eydi,Mohammad, 28, 35
F
Farhadi-Beiranvand,A., 48
Farhadi-Kangarlu,Mohammad, 27, 46
Farhangi,Shahrokh, 23, 41, 64
Farjah,Ebrahim, 49
Farkhadov,Mais, 53
Farzamnia,Ali, 55, 78
Farzanehfard,Mohammad, 25
Farzanehfard,Hosein, 60
82
Farzin,Ali, 26
Fatemi,Seyed Majid, 62, 66
Fathi,Manuchehr, 53, 79
Ferdosian Moghaddam,Majid, 58, 59, 59
Ferrieux,JP., 22
Fotuhi-Firuzabad,Mahmud, 57
G
Garbuio,Lauric, 20 , 21, 22
Garcia,Cristian, 67
Gautier,C., 22
Gavipanjeh Marangalu,Milad, 46
Gerbaud,Laurent, 22
Ghadamgahi,Ali, 43
Ghaderi,Mohammad,Hassan, 45, 47
Ghaffarpour Sadighi,Hossein, 27
Ghaheri,Aghil, 32
Ghanbari,Teymoor, 49
Ghani,P., 70
Gharehpetian,G. B., 67
Ghaseminejad Liasi,Sahand, 64
Ghasemzadeh,Saeed, 70
Ghazi,Reza, 35, 42
Gholami Gorji,Jafar, 26
Gholizadeh,Hossein, 24
Ghorbanali Afjeh,Mohsen, 33
Ghorbani,Hamidreza, 19
Golshan,Farzad, 35
Golshannavaz,Sajjad, 36, 56
H
Habibolahzadeh,Mohammad, 50
Hafezi,H.R., 70
Haghi,Ali, 34,46
Hajisadeghian,Hossein, 33
Hajizadeh,A., 71
Hajmohammadi,S., 49
Halvaei Niasar,Abolfazl, 21
Hamzeh,Mohsen, 24, 45, 47
Hasani,MirYahya, 74
Hashemi,Seyed Saeed, 42, 63
Hassan Pour,Naser, 38
Hatami Abbasi,Mohammad, 35
Hefaz,Hamid, 32
Heidari,Milad, 60, 76
Heidary Yazdi,Seyed Saeid, 78
Hemmati,Siroos, 32
Heydari,Elahe,61
Heydari-doostabad,Hamed, 42
Honarmand,Shahin, 23
Hosseini,S. Hossein , 35
Hosseini,Seyed Hossein, 61, 68, 70, 71 , 72,
72, 74, 76
Hosseini Sabzevari,Seyyed Iman, 48
Hosseinpour,Majid, 42
Hosseinyar,Hossein, 29
I
Iman-Eini,Hossein, 23, 39, 49, 65
83
Iqbal,Atif, 52, 62
J
Jabbarnejad,Alireza, 44
Jafari Harandi,Mahdi, 64
Jahanghiri,Haleh, 75
Jahanpour-Dehkordi,Mohammad, 43
Jalali Kondelaji,Mohammad Amin, 30
Jalilian,Alireza, 50
Jalilvand,Abolfazl, 61
Jamali,Sadegh, 50
Jokar,M., 70
K
Kaboli,Shahriyar, 55, 79
Kargar,Paria, 56
Karimi,Siamak, 29, 69
Karimi,Mohsen, 33
Karimi,Sepehr, 49
Karimi,Shokouh, 52, 62
Karimi,Mahdi, 56
Kavehei,Saeed, 45, 63
Kedous-Lebouc,Afef, 20
Kesbia,N., 21
Khajouei,Javad, 64
Khalaj Monfared,Kourosh, 49
Khaleghi,Mehdi, 37
Khateri-abri,S., 44
Kheirollahi,Reza, 35, 66
Khorsandi,Amir, 27, 47
Khoun Jahan,Hossein, 55, 78
Kianpoor,N., 71
Kolahian,Pouya, 51
Kumar,Amit, 41
L
Latifi Majareh,Seyed Hadi, 36
Liserre,Marco, 29, 50, 77
M
M. Mosammam,Behnam, 56
Madadi,Hamed, 24, 60
Mahdavi,Abbas, 35
Mahdavi,M. S., 67
Mahdinia Roudsari,Hossein, 50
Mahmouditabar,Farshid, 34,46
Mahzouni-Sani,Mahdi, 56, 57
Majidi,Behrooz, 19
Malekipour,Amirhosein, 52
Mardaneh,Mohammad, 21, 23, 51
Marzang,Vafa, 72, 76, 76
Milimonfared,Jafar, 20, 78
Mipo,Jean-Claude, 20
Mirsalim,Mojtaba, 19, 30, 31, 31, 58
Mirzaei,Mehrdad, 40
Mirzaei,Ahmad, 54
Mirzaei Banafsh Tappeh,Mohammad, 47
Mizani,Amirreza, 77
Moghaddas-Tafreshi,Seyed Masoud, 65
Mohamadian,Mustafa, 35
84
Mohammadi,Farid, 27
Mohammadi,Shahin, 60, 72
Mohammadi,Sina, 61
Mohammadi Ajamloo,Akbar, 32
Mohammadi Ivatloo,Behnam, 55, 78
Mohammadi,Mohammad, 28
Mohammadpour Shotorbani,Amin, 55, 78
Morel,Simon, 22
Mosaddegh,Hamidreza, 39
Mosallanejad,Ali, 69
Moslehi Bajestan,Mehran, 24, 60
Mostaan,Ali, 52
Motie Birjandi,Ali A., 33
Mousavi,Sadra, 29
Mousavi,Mahdi S., 38
N
Nabinejad,Ali, 23
Naderi Najafabadi,Elahe, 24
Nahavandi,Ramin, 33
Najafpour,Mohsen, 24
Nasiri,Abolfazl, 68, 68
Nasiri-Gheidari,Z., 48, 49
Nazari,Erfan, 76
Nazarpour,Daryoush, 29, 36, 56, 57
Nekoukar,Vahab, 38
Nikravesh,Esmail, 64
Noroozi,Negar, 43
Nosratabadi,Seyyed Mostafa, 64
O
Ojaghi,Mansour, 61
Ouni,Saeed, 53
P
Panahandeh Esmaeelnia,Farhad, 57
Parang,Benyamin, 28
Personnaz,Sophie, 20
Pichan,Mohammad, 27, 33
Pourhadi Abkenar,Pouyan, 65
Pourjafar,Saeed, 37
Q
Quérel,Yoann, 20
R
Rahimi,Somayyeh, 68, 75
Rahimian,Mohammad Mohsen, 42
Rahmati,Saman, 40
Rahmati,Abdolreza, 72
Rahnamaei,Sayed Reza, 40
Rajaei,Amirhossein, 23
Ranjbarizad,Vida, 26
Rasekh,Navid, 42, 58
Rashidi,Amir, 40, 53
Rashidirad,Nasim, 45
Rastegar,Hassan, 27
Rastegar,Mohammad, 64
Razi,Reza, 39, 49
Rodriguez,Jose, 38, 67
Rokrok,Esmaeel, 29, 41, 50, 77
85
Roohi Sankestani,Mohammad Meisam, 18
Rostami,Naghi, 44, 76
Rouzbehi,Kumars, 78
S
saadat saadatabadi,Ali, 68
Sabahi,Mehran, 37, 52
Saber,C., 22
Sabour,Shahin, 36, 56, 57
Sadeghi,R., 70
Sadri,Mehdi, 33
Saeid,Seyed Amin, 32
Saghaian-nezhad,Sayed Morteza, 40, 53
Salavati,Mojtaba, 41
Salehi,Sama, 66, 70
Salehian,Atefeh, 42, 63
Salemnia,Ahmad, 27, 37
Samady Shadlu,Milad, 62, 66
Samimi,Mohammad Hamed, 65
Saradarzadeh,Mehdi, 64
Sarikhani,Ali, 24, 47
Schanen,Jean-Luc, 21, 22, 54
Sedaghati,Farzad, 36, 37, 75
Serajian,Mina, 66
Shafiee,Qobad, 61
Shafiei,Sadjad,20
Shaker,Ayda, 75
Shalchi Alishah,Rasoul, 74, 74
Shamlou,Sadegh, 40
Shamsinejad,Mohammad Ali, 24, 60
Shayeghi,Hossein, 36, 37, 75
Shokri Garjan,Ghasem, 24
Shokrollahi Moghani,Javad, 20, 47, 58, 77
Shoulaie,Abbas, 77
Siadatan,Alireza, 18, 18, 52, 62, 79
Soltani,M., 71
Soltanian,Farshad, 73
T
Tahami,Farzad, 29, 57, 69
Talebkhah,Amin, 62, 66
Tarzamni,Hadi, 52, 57
Tavakoli Bina,Mohammad, 64
Tohidi,S., 44
Tootoonchian,F., 48, 49
V
Vaezi,Seyyed Ahmad, 39
Vaez-Zadeh,Sadegh, 43, 44, 54, 58, 59, 59
Varesi,Kazem, 38, 56
Vatani,Matin, 31
Veysinejad,Aria, 40
Voldoire,A., 22
Vosoughi,Naser, 78
Y
Yahyazadeh,Sajjad, 37
Yazdani,Mohammad Rouhollah, 25
Yazdanpanah,Reza, 31
Yazdian Varjani,Ali, 42, 45, 61, 63, 63, 70
86
Yousefi,M., 71
Z
Zahedi,Neda, 66, 70
Zakerian,Ali, 58, 59, 59
Zamani Khaneghah,Mohammad, 46
Zamanzad Ghavidel,Behnam, 73
Zanchetta,Pericle, 54
Zare,Majid, 45, 63
Zare,Kazem, 55
Zeinali-arabzadeh,Sajjad, 42
Zolghadri,MohammadReza, 43, 53