grid connected photovoltaic array

8/16/2019 Grid Connected Photovoltaic Array

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Optimal Design of MPPT Controllers ForOptimal Design of MPPT Controllers For

Grid Connected Photovoltaic Array SystemGrid Connected Photovoltaic Array System

Benha University

Faclty of !ngineering Sho"ra

!lectrical !ngineering Department#$ M$ Mahmod#$ M$ Mahmod%%& #$ A$ A"del#adi& #$ A$ A"del#adi'('(& M$ A$& M$ A$

!"rahim!"rahim''& !$ M$ Saied& !$ M$ Saied''& M$ M$ Salama& M$ M$ Salama''

''Department of !lectrical po)er and machines& Faclty ofDepartment of !lectrical po)er and machines& Faclty of

!ngineering at Sho"ra& Benha University& Cairo& !gypt!ngineering at Sho"ra& Benha University& Cairo& !gypt%%Mem"er of C*G+!& Cairo& !gyptMem"er of C*G+!& Cairo& !gypt

(eng,hosama"delra-a./yahoo$com(eng,hosama"delra-a./yahoo$com


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Presentation OtlinePresentation Otline

Paper O"0ective$Paper O"0ective$ System Configration and Modeling$System Configration and Modeling$

Ma1imm Po)er Point Trac.ing 2MPPT3 Techni4es$Ma1imm Po)er Point Trac.ing 2MPPT3 Techni4es$

'$ *ncremental Condctance Techni4e$'$ *ncremental Condctance Techni4e$ %$ Pertr" and O"serve 2P5O3 Techni4e$%$ Pertr" and O"serve 2P5O3 Techni4e$

6$ Fractional Open Circit Techni4e$6$ Fractional Open Circit Techni4e$

7$ Fractional Short Circit Techni4e$7$ Fractional Short Circit Techni4e$

Particle S)arm Optimi-ation 2PSO3 Techni4e$Particle S)arm Optimi-ation 2PSO3 Techni4e$

+eslts and Discssion$+eslts and Discssion$

Conclsion$Conclsion$


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Paper O"0ective

Paper O"0ective

This paper presents optimal design for the mostThis paper presents optimal design for the most

commonly sed MPPT techni4es "ased oncommonly sed MPPT techni4es "ased on

Proportional *ntegral Controller tned "y ParticleProportional *ntegral Controller tned "y Particle

S)arm Optimi-ation 2P*8PSO3 $S)arm Optimi-ation 2P*8PSO3 $

These sggested techni4es are&2'3 *ncrementalThese sggested techni4es are&2'3 *ncrementalCondctance 2*C3& 2%3 Pertr" and O"serve 2P5O3&Condctance 2*C3& 2%3 Pertr" and O"serve 2P5O3&

263Fractional Short Circit and 273 Fractional Open263Fractional Short Circit and 273 Fractional Open

circit voltage techni4es$circit voltage techni4es$

A comparative stdy "et)een different techni4es ofA comparative stdy "et)een different techni4es ofMPPT )ith respect to the energy availa"ility ratioMPPT )ith respect to the energy availa"ility ratio

from photovoltaic panels )as performed$from photovoltaic panels )as performed$


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System Configration and ModelingS

ystem Configration and Modeling the proposed system consists of '99 .: P; array& dc8dc "oost converter& dc8ac converter 2inverter3the proposed system consists of '99 .: P; array& dc8dc "oost converter& dc8ac converter 2inverter3

and distri"tion gridand distri"tion grid. The "loc. diagram of the developed system is sho)n in fig$'The "loc. diagram of the developed system is sho)n in fig$'

Fig$' Bloc. diagram for the proposed systemFig$' Bloc. diagram for the proposed system

The e4ivalent circit of the solar cell model can "e represented as sho)n in fig$%The e4ivalent circit of the solar cell model can "e represented as sho)n in fig$%

Fig$% Single diode P; cell e4ivalent circitFig$% Single diode P; cell e4ivalent circit


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System Configration and ModelingS

ystem Configration and Modeling

3

o rs r go r I I *[T / T ] *[exp(((Q * E ) / (B * K)) * ((1 / T ) (1 / T)))]= −

pv p ph s o pv pv s sI N * I N * I *[exp((Q * (V I * R )) / (N * A * K * T)) 1]= − + −

rs sc oc sI I / [exp((Q * V ) / (N * K * A * T)) 1]= −

ph sc i r I [I K (T T )] * G / 1= + −

The Mathematical Model of the solar cell can "e )ritten as follo)s


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:here&:here

&

**phph P; modle Photocrrent 2A3$P; modle Photocrrent 2A3$

**scsc P; modle short circit crrent 2A3$P; modle short circit crrent 2A3$

= = ii short circit crrent temperatre coefficient at *sc 2A>short circit crrent temperatre coefficient at *sc 2A> oCC)

TT Modle Operating temperatreModle Operating temperatre 22oC3C3

TTrr

+eference temperatre 2+eference temperatre 2o

CC)

$$

GG P; modle illminationP; modle illmination 2:>m2:>m%%33

**rsrs +everse satration crrent 2A3+everse satration crrent 2A3

?? !lectron charge 2C3!lectron charge 2C3

;;o$co$c Open Circit ;oltage 2;3Open Circit ;oltage 2;3

@@ss @m"er of cells connected in series@m"er of cells connected in series

= = Bolt-mann constant 2>=3Bolt-mann constant 2>=3@@pp @m"er of cells connected in Parallel@m"er of cells connected in Parallel

!!gogo Band gap for silicon 2e;3Band gap for silicon 2e;3

A&BA&B ideality factorsideality factors

+ + ss Series resistance of the P; modle 2Series resistance of the P; modle 233


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MpptTechniques

RequiredMeasured

Parameters

Equation ofError

InputSignal

OutputSignal

Incremental

Conductance

Voltage and

Current

E=I/V + dI/dV Vpv,Ipv Duty

cycle

FractionalOpen Circuit

Voltage E=Vref -!Vo.c Vpv,Vref Dutycycle

Fractional

"#ort Circuit

Current E= Iref -$I%.c Ipv,Iref Duty

cycle

&ertur' andO'%erve

Voltage andCurrent

(((((((((( Vpv,Ipv Dutycycle

Ma1imm Po)er Point Trac.ing 2MPPT3 Techni4esMa1imm Po)er Point Trac.ing 2MPPT3 Techni4es


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Particle Swarm Optimization (PSO) Technique

! PSO performs "est reslts in optimi-ation than any other

optimi-ation techni4e$

! PSO is really has t)o poplations p"ests and crrent positions

this allo)s greater diversity and e1ploration over a single

poplation$

! Also& the momentm effects on particle movement can allo)

faster convergence as sho)n in fig$ 6


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Fig$6 A general flo)chart of PSOFig$6 A general flo)chart of PSO


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+eslts and Discssion+eslts and Discssion

The *8; characteristics for the P; model are sho)n in fig$7$

The P8; otpt characteristics for the P; model are sho)n in

fig$$


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The step p DC>DC "oost converter increases the normal voltage of

P; from %E% ;DC at ma1imm po)er to 99 ;DC as sho)n in fig$

TheThe proposed system is tested nder t)o cases )ithproposed system is tested nder t)o cases )ithdifferent irradiance pattern as sho)n in figs E&H and itIsdifferent irradiance pattern as sho)n in figs E&H and itIs

responses are sho)n in figIs J&'9$responses are sho)n in figIs J&'9$

+eslts and Discssion


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+eslts and Discssion+eslts and Discssion

"ig#$ %o&'r irr'i'ce p'**er +or c'se s*,- 1

"ig#. -'0ic respose o+ V o,*p,* po2er 2i*h 3T co*ro&&er "ig#. -'0ic respose o+ V o,*p,* po2er 2i*h 3T co*ro&&ers


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Fig.9 Solar irradiance pattern for case study 2Fig.9 Solar irradiance pattern for case study 2

Fig.10 Transient behavior of PV output powerFig.10 Transient behavior of PV output power


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Fig.11 rid !utput VoltageFig.11 rid !utput Voltage

Fig.12 rid !utput "urrentFig.12 rid !utput "urrent


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Table I Available Power Ratio for each MPPT Table I Available Power Ratio for each MPPT

techniquetechnique


Table II Values of K Table II Values of K pp and K and K ii obtained by Particle Swarmobtained by Particle Swarm

ptimi!ationptimi!ation


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ConclsionConclsion

) I *his p'per4 ' e2 e++ec*ive co*ro& 0e*ho i*egr'*igI *his p'per4 ' e2 e++ec*ive co*ro& 0e*ho i*egr'*ig

%567'se I 2's i*ro,ce#%567'se I 2's i*ro,ce#

) This rese'rch 'r*ic&e e0os*r'*es *h'* %5 c' so&veThis rese'rch 'r*ic&e e0os*r'*es *h'* %5 c' so&vese'rchig *he co*ro&&er p'r'0e*ers 0ore e++icie*&- *h'se'rchig *he co*ro&&er p'r'0e*ers 0ore e++icie*&- *h'

cove*io'& oes#cove*io'& oes#

) 3oe&ig o+ *he propose s-s*e0 2's per+or0e ,sig3oe&ig o+ *he propose s-s*e0 2's per+or0e ,sig

3AT8AB/%I398INK so+*2're p'c:'ge#3AT8AB/%I398INK so+*2're p'c:'ge#


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ConclsionConclsion

) The si0,&'*io 2's co,c*e i orer *o cover +,&& r'geThe si0,&'*io 2's co,c*e i orer *o cover +,&& r'ge

o+ oper'*ig coi*ios ' severe is*,r7'ces#o+ oper'*ig coi*ios ' severe is*,r7'ces#

) I*;s evie* +ro0 si0,&'*io res,&*s *h'* *he Icre0e*'&I*;s evie* +ro0 si0,&'*io res,&*s *h'* *he Icre0e*'&co,c*'ce *echi


19/19

e-mail : e-mail : eng _ hosamabdelra

zakeng _ hosamabd

elrazak@@ yahoo.com yahoo.com

Mobile : Mobile : (+2) 012 104 !! 4

(+2) 012 104 !! 4

grid connected photovoltaic array

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