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TE Electrical (Semester-VI)

Shivaji University, Kolhapur

Department of Electrical Engineering

Course plans for T.E. (Semester-IV)

Scheme of Teaching & Examination

Sr.

No. Name Of Subject

Teaching Scheme per

week Examination Scheme

L T P TOTAL PAPER TW PO

E

TOTAL

1 Advanced Electrical

Measurements 4 - 4 100 25 -

125

2 Communication

Engineering 3 - 2 5 100 25 -

125

3 Electrical Machine

Design 3 1 2 6 100 50 50

200

4 Power System-III 4 - 2 6 100 25 - 125

5 Electrical Drives 4 - 2 6 100 25 50

175

6 Electrical Workshop 2 2 50 50

Total 18 1 18 29 500 200 100 800

INDEX

Sr. No. Subject Code Page No.

1. Advanced Electrical Measurements EE 306 02

2. Communication Engineering EE 307 11

3. Electrical Machine Design EE 308 22

4. Power System-III EE 309 33

5 Electrical Drives EE 310 43


Course plan for Advanced Electrical Measurements

Course Code ELE 306 Course Title Advanced Electrical

Measurements

Prepared by Mrs.Kumbar Shobha Semester AY 2017-18, Sem II

Prerequisites Student should have good knowledge of electrical quantities.

Course Outcomes

At the end of the course the students should be able to:

C0306.1 Demonstrate3 different types of meters

C0306.2 Analyze4 passive transducers

C0306.3 Evaluate5active transducers

C0306.4 Discriminate4 electromechanical transducers

C0306.5 Criticize6 digital transducers

C0306.6 Distinguish2 virtual instrumentation

Mapping of COs with POs

POs

COs a b c d e f g h i j k

C0306.1 3

C0306.2 2

C0306.3 2

C0306.4 3

C0306.5 3

C0306.6 2

1 Mild correlation 2 Moderato correlation 3 Strong correlation

Course Contents

Unit

No.

Title

No. of

Hrs.

1

Measuring Instruments: Introduction, output power meters, Phase meter, Q meter,

LCR meter, Transistor tester, Stroboscope. Measurement of Power: Introduction,

Bolometer, Bolometer Element, Mount, Bolometer Bridge, Calorimetric.

Measurement of standing wave ratio measurement.

10

2 Passive Transducers: Inductive transducers- Inductive thickness transducers,

Inductive displacement transducers, Movable core-type Inductive transducers, 06


eddy current type Inductive Transducers. Capacitive transducers- Capacitive

thickness transducers, capacitive displacement transducers, capacitive moisture

transducers.

3

Active Electrical Transducers: Introduction, thermoelectric transducers,

thermoelectric phenomenon, common thermocouple systems, piezoelectric

transducers, piezoelectric phenomenon piezoelectric materials, piezoelectric force

transducers, piezoelectric strain, piezoelectric torque transducers, piezoelectric

pressure transducers, piezoelectric acceleration transducers. Magnetostrictive

transducers- Magnetostrictive force transducers, Magnetostrictive acceleration

transducers, Magnetostrictive torsion transducers, Hall Effect transducers, and

application of Hall transducer.

08

4

Electromechanical transducers: Tachometers, variable reluctance tachometers

Electrodynamics vibration transducers, Electromagnetic pressure electromagnetic

flow meter. Photoelectric transducers- photoelectric phenomenon, photoelectric

transducers, Photo volatile transducers, Photo emissive transducers. Ionization

transducers- Ionization vacuum gauges, Ionization displacement transducers,

nuclear radiation transducers, radioactive vacuum gauge, radioactive thickness

gauge, radioactive level gauges.

08

5

Digital transducers: Digital displacement transducers, Digital tachometers,

transducer oscillators. Electrochemical transducers- basics of electrode potentials,

reference electrodes, indicator electrodes, measurement of PH, measurement of

bioelectric signals.

04

6

Virtual Instrumentation: Graphical System Design, Design flow with GSD, Virtual

instruments and Traditional Instruments, Hardware and software in VI, VI for test,

control &design, VI in the engineering process, GSD using LabView.Introduction

to data acquisition on PC, Sampling fundamentals, Input/Output techniques, Data

acquisition interface requirements –Issues involved in selection of Data acquisition

08

Reference Books:

Sr.

No.

Title of Book Author Publisher/Edition Topics

covered

1 Electrical Measurement & Measuring

Instruments

E. W. Golding

&Widdies

Tata McGraw Hill,

New Delhi, 3rd

edition

1,3

2 A Course in Electrical and Electronic

measurements & Instrumentation

A.K.Sawhney

.

Dhanpat Rai & Sons 2,4

3 Electronic Instruments &

Measurement Techniques

W.D. Cooper.

Prentice Hall

International

4,5,6

4 Virtual Instrumentation Using jovitha Jerome PHI Publications


LabVIEW

5 Virtual Instrumentation Using

LabVIEW Sanjay Gupta, Tata McGraw Hill,

2ndEdition

Evaluation Scheme

Examination

Scheme

Theory Term Work OE Total

Max. Marks 100 25 -- 125

Contact Hours/

week

4 ----- -- 04

Scheme of Marks

Section Unit No. Title Marks

I

1 Measuring Instruments

16

2 Passive Transducers

18

3 Active electrical Transducers

16

II

4 Electromechanical Transducers

16

5 Digital Transducers

18

6 Virtual Instrumentation

16

Course unitization

CO Evaluation Remark

CO306.1 CAT 1 1 question on unit 1 and 2 with 15 marks each

CO306.2



CO306.4


CO306.6

Unit wise Lesson Plan

Unit No

Unit Title

Planned Hrs.

1 Measuring instruments 10

Lesson schedule

Class

No.

Details to be covered

1 Introduction regarding subject.

2 output power meters

3 Phase meter, Q meter

4 LCR meter, Transistor tester

5 Stroboscope

6 Measurement of Power: Introduction,

7 Bolometer Element

8 Mount, Bolometer Bridge

9 Calorimetric

10 Measurement of standing wave ratio measurement

Review Questions

Q1 Explain phase meter, Q meter. C0306.1

Q2 Explain LCR meter, Transistor meter. C0306.1

Unit No

Unit Title Planned Hrs.

2 Passive Transducers 06

Lesson schedule

Class

No.



2 Inductive thickness transducers, Inductive displacement transducers

3 Movable core-type Inductive transducers

4 Eddy current type Inductive transducers.

5 Capacitive thickness transducers, capacitive displacement transducers

6 Capacitive transducers- capacitive moisture transducers.

Review Questions

Q1 Explain Movable core-type Inductive transducers C0306.2

Q2 Explain Capacitive thickness transducers, capacitive displacement transducers C0306.2

Unit No Unit Title Planned Hrs.

3 Active electrical transducers 08

Lesson schedule

Class

No.


1 Introduction

2 Thermoelectric transducers, thermoelectric phenomenon.

3 common thermocouple systems, piezoelectric transducers

4 piezoelectric phenomenon piezoelectric materials

5 Piezoelectric force transducers, piezoelectric strain.

6 Piezoelectric torque transducers, piezoelectric pressure transducers, piezoelectric acceleration

transducers.

7 Magnetostrictive transducers Magnetostrictive force transducers

8 Magnetostrictive acceleration transducers, Magnetostrictive torsion transducers, Hall Effect

transducers, and application of Hall transducer.

Review Questions

Q1 Describe Thermoelectric transducers, thermoelectric phenomenon. C0306.3

Q2 Explain Magnetostrictive acceleration transducers, Magnetostrictive torsion

transducers

C0306.3

Section II

Unit No 4 Unit Title Electromechanical transducers Planned

Hrs.

08

Lesson schedule

Class

No.



1 Tachometers, variable reluctance tachometers Ionization transducers

2 Electro dynamic vibration transducers.

3 Electromagnetic pressure electromagnetic flowmeter.

4 Photoelectric transducers- photoelectric phenomenon,

5 Photo volatile transducers.

6 Photo emissive transducers. Ionization vacuum gauges,

7 Ionization displacement transducers, nuclear radiation transducers,

8 Radioactive vacuum gauge, radioactive thickness gauge, radioactive level gauges.

Review Questions

1 Explain Photo emissive transducers. Ionization vacuum gauges. C0306.4

2 Explain radioactive vacuum gauge, radioactive thickness gauge, radioactive level

gauges.

C0306.4

Unit No


5 Digital transducers 04

Lesson schedule

Class

No.


1 Digital displacement transducers, Digital tachometers,

2 Electrochemical transducers- basics of electrode potentials, reference electrodes

3 Transducer oscillators. indicator

4 Electrodes measurement of PH, measurement of bioelectric signals.

Review Questions

1 Explain Digital displacement transducers, Digital tachometers, C0306.5

2 Explain Electrodes measurement of PH, measurement of bioelectric signals. C0306.5

Unit No 6 Unit Title Virtual instrumentation Planned Hrs. 08

Lesson schedule

Class

No.


1 Graphical System Design,


2 Design flow with GSD, Virtual instruments and Traditional Instruments,

3 VI for test, control &design,

4 VI in the engineering process,

5 GSD using LabView.Introduction to data acquisition on PC,

6 Sampling fundamentals, Input/Output techniques,

7 Hardware and software in VI

8 Data acquisition interface requirements –Issues involved in selection of Data acquisition cards

and buses

Review Questions

1 Explain Sampling fundamentals, Input/Output techniques C0306.6

2 Explain Graphical System Design. C0306.6

Model Question Paper

Course Title : Advanced Electrical Measurements

Duration-3 Hrs. Max. Marks: 100

Instructions:

1 Attempt any three questions from each section

2 Figures to the right indicate full marks.

3 Wherever required neat sketches shall be drawn.

1 a) Explain working of Q meter. 06

b) Explain construction and working of Transistor meter. 12

2 a) Explain Capacitive thickness transducers, 08

b) Describe Thermoelectric transducers, thermoelectric phenomenon 08

3 a) Explain thermoelectric phenomenon with suitable example. 12

b) Explain different radioactive level gauges. 06


Assignments

Unit No.1-Assignment

1 Explain phase meter, Q meter.

2 Explain LCR meter

3 Explain working of Transistor meter.

4 Explain working of Q meter.


1 Explain Movable core-type Inductive transducers

2 Explain Capacitive thickness transducers,

3 Explain capacitive displacement transducers


1 Describe Thermoelectric transducers, thermoelectric phenomenon.

2 Explain Magnetostrictive acceleration transducers

3 Explain Magnetostrictive torsion transducers.

4 Explain thermoelectric phenomenon with suitable example.


1 Explain Photo emissive transducers..

2 Explain radioactive vacuum gauge, radioactive thickness gauge,

4 a) Explain concept of Ionization of vacuum gauges 06

b) Explain Electrodes measurement of PH,. 12

5 a) Explain Sampling fundamentals, Input/Output techniques 04

b) Explain Graphical System Design. 12

6 a) Explain Issues involved in selection of Data acquisition cards and buses 08

b) Explain Graphical System Design. 08


3 Explain concept of Ionization of vacuum gauges

4 Explain different radioactive level gauges.


1 Explain Digital displacement transducers,

2 Explain Electrodes measurement of PH,.

3 Explain working of Digital tachometers

4 Explain the measurement of bioelectric signals


1 Explain Sampling fundamentals, Input/Output techniques

2 Explain Graphical System Design.

3 Explain Design flow with GSD

4 Explain Issues involved in selection of Data acquisition cards and buses


Course plan for Communication Engineering.

Course Code ELE 307 Course Communication Engineering.

Prepared by Mr. S. V. Patil

Mrs.A.D.Katre Semester AY 2017-18, Sem II

Prerequisites The student should know about the basic concepts of signals and systems, analog

electronics.

Course Outcomes


C0307.1 Analyze4 the electrical communication and classification of signals and the signal

transmission using Fourier transform

C0307.2 Design4 the super heterodyne AM receiver, carrier acquisition, television.

C0307.3 Describe1 the concepts of instantaneous frequency, band-width of angle modulated

waves

C0307.4 Distinguish2 the concept of sampling with different modulation techniques

C0307.5 Discuss2 Digital Data Transmission

C0307.6 Solve3practicalcommunication systems in light by Shanon’s equation.


POs

COs

a b c d e f g h i j k

C0307.1 1 1 2

C0307.2 2

C0307.3 2

C0307.4 2

C0307.5 2 1

C0307.6 1 3 1



Course Contents

Unit

No.

Title No. of

Hours

1.

Introduction to Signals:

Overview of electrical communication, Size of a signal, classification of signals,

Signal operations, unit impulse function, signals and vectors, correlation orthogonal

signal sets, Fourier series. Fourier transform, signal transmission through a linear

system, ideal andPractical filters, signal distortion over a communication channel,

signal energy, signal power, numerical computation of Fourier transform.

09

2.

Amplitude Modulation:

Base-band and carrier communication, amplitude modulation -DSB, AM, AM,SSB,

VSB, carrier acquisition, super heterodyne AM receiver, television.

05

3.

Angle Modulation:

Concept of instantaneous frequency, band-width of angle modulated

waves,generationofFM waves, demodulation of FM, Interference in angle

modulated systems, FM receiver.

04

4.

Sampling and Pulse Code Modulation:

Sampling theorem, pulse-code modulation, and differential pulse code modulation

delta modulation.

04

5.

Digital Data Transmission:

Basic digital communication system, line coding, pulse shaping, scrambler,

regenerative repeater, detection-error probability, M-array communication, digital

carrier systems digital multiplexing.

06

6.

Information theory and coding:

Cellular telephone, spread spectrum systems, transmission media, public, switched

telephone network. Measure of information, source encoding error free

communication over a noisy channel, channel capacity of a discrete memory less

channel, practical, communication systems in light of Shanon’s equation, linear

block codes.

08

Reference Books:

Sr.

No.

Title of Book Author Publisher/Edition Topics

1) Modern Digital and Analog

Communication systems

B.P. Lathi Oxford press All

2) Communication Electronics L.F. Frangel, Tata McGraw Hill 4,5,6


3) Contemporary Communication

systems using MATLAB

J.G. Proakis, Salahi Tata McGraw Hill 3,4,5,6,7

Evaluation scheme:

Examination

Scheme

Theory Term Work POE Total

Max. Marks 100 25 --- 125

Contact Hours/

week

3 ---- 02 05

Scheme of Marks:


I

1 Introduction to Signals 16

2 Amplitude Modulation 8 or 16

3 Angle Modulation 8-16

II

4 Sampling and Pulse Code Modulation 24

5 Digital Data Transmission 16

6 Information theory and coding: 32 or 40

• Weightage may differ.

Course Utilization:


CO307.1

CAT 1 1 question on unit 1 and 2 with 15 marks each CO307.2


CO307.4



CO307.6


Unit No Unit Title Planned Hrs.

1 Introduction to Signals 4

Lesson schedule:

Class

No.


1 Overview of electrical communication

2 Size of a signal, classification of signals, signal operations

3 Unit impulse function, signals and vectors, correlation.

4 Orthogonal signal sets, Fourier series.

5 Fourier transform, signal transmission through a linear system

6 Ideal and practical filters

7 Signal distortion over a communication channel

8 Signal power

Review Questions:

Q1 Explain size of signal. C0307.1

Q2 Give the classification of signals. C0307.1

Q3 Explain power signal and hence prove the Parsevals power theorem. C0307.1

Q4 Explain the concept Pre-emphasis C0307.1

Q5 What is frequency modulation? C0307.1

Q6 Find the Fourier transform of signum function denoted by sgn(t). C0307.1

Q7 Classify the Ideal and practical filters C0307.1

Q8 Determine the Signal distortion over a communication channel C0307.1

Unit

No



2 Amplitude Modulation 5

Lesson schedule

Class

No.


1 Base-band and carrier communication

2 Amplitude modulation –DSB

3 Carrier acquisition, AM,SSB,VSB

4 Super heterodyne AM receiver

5 Television

Review Questions

Q1 Describe two different types of AM transmitters with the help of block diagram. C0307.2

Q2 Describe the expression for the AM signal for any general moduilating signal

which is not sinusoidal.

C0307.2

Q3 Explain the Base-band. C0307.2

Q4 Explain in detail the process of generation of DSB waves with a neat sketch. C0307.2

Unit

No

3 Unit Title: Angle Modulation Planned

Hrs.

4

Lesson schedule

Class

No.


1 Concept of instantaneous frequency, band-width of angle modulated waves

2 Generation of FM waves, demodulation of FM

3 Interference in angle modulated systems

4 FM receiver

Review Questions

Q1 What if frequency modulation. Derive the mathematical expression for frequency

modulation.

C0307.3

Q2 Describe in detail Armstrong method of FM generation with the help of a block

diagram.

C0307.3

Q3 Explain instantaneous frequency with a suitable diagram. C0307.3

Q4 Explain FM receiver with a neat block diagram. C0307.3


Q5 Explain the Interference in angle modulated systems with neat sketch. C0307.3

Q6 Discuss on FM demodulators. C0307.3

Unit

No

4 Unit Title: Sampling and Pulse Code Modulation Planned

Hrs.

4

Lesson schedule

Class

No.


1 Sampling theorem

2 Pulse-code modulation

3 Differential pulse code modulation

4 Delta modulation.

Review Questions

Q1 Explain with block diagram differential pulse-code modulation. C0307.4

Q2 Explain Delta modulation with a block diagram. C0307.4

Q3 Explain and represent Sampling theorem. C0307.4

Q4 Comment on concept of sampling and hence explain the various types of sampling

used in communication.

C0307.4

Q5 Explain with block diagram differential pulse-code modulation. C0307.4

Unit

No

5 Unit Title: Digital Data Transmission Planned

Hrs.

6

Lesson schedule

Class

No.


1 Basic digital communication system

2 Line coding, pulse shaping

3 Scrambler, regenerative repeater

4 Detection-error probability


5 M-array communication

6 Digital carrier systems digital multiplexing.

Review Questions

Q1 Describe the concept of eye diagram in modern digital communication system. C0307.5

Q2 Differentiate clearly between analog communication and digital communication

systems with suitable example.

C0307.5

Q3 Explain regenerative repeater. C0307.5

Q4 Explain the use of error correcting codes in digital communication systems. C0307.5

Q5 Describe the digital communication system with a neat sketch. C0307.5

Q6 Write a short note on M-array communication C0307.5

Unit

No

6 Unit Title: Information theory and coding Planned

Hrs.

8

Lesson schedule

Class

No.


1 Cellular telephone, spread spectrum systems

2 Transmission media, public

3 Switched telephone

4 Network.measure of information

5 Source encoding error free communication over a noisy channel

6 Channel capacity of a discrete memory less channel

7 Practical, communication systems in light of Shanon’s equation

8 Linear block codes.

Review Questions

Q1 Write a short note on block coding. C0307.6

Q2 Explain switched telephone system with a neat sketch. C0307.6

Q3 Write algorithm for linear block codes. C0307.6

Q4 State and derive the Shanon’s equation. C0307.6


Q6 Explain the capacity of discrete memory channel. C0307.6

Q7 Describe the spread spectrum analysis. C0307.6

Q8 Write short note on Source encoding error free communication over a noisy

channel

C0307.6

Q9 Explain importance of the information coding. C0307.6


Course Title

Communication Engineering

Duration 3 Hours Marks:

100

Instructions:

1] Attempt any three questions from each section.

2] Figure to right indicates full marks.

3] Assume necessary data if required.

Section-I

1 a Define amplitude modulation and derive the expression for the modulation index.

Draw time domain signal and its frequency representation.

8

b A broadcast transmitter radiates 20KW when the modulation percentage is 75%.

How much of this is carrier power? Also calculate the power of each sideband.

8

2 a What is signal sideband transmission? Explain the advantages of S.S.B. over

D.S.B and A.M.

10

b What is signal sideband transmission? Explain the advantages of S.S.B. over

D.S.B and A.M.

8

3 a Calculate percentage power saving when the carrier is suppressed in AM

modulation to depth of i) 100% ii)50%. Repeat the same when the carrier and one

of the sidebands are suppressed.

8

b What is meant by phase modulation, clearly differentiate between frequency

modulation and phase modulation.

8

4 a Explain different types of noise sources in detail. 8

b What is Hilbert transform? Explain its applications. 8


5 a What is the role of one bit quantizer in delta modulation? Explain DM transmitter

in detail.

8

b Apply the Shannon-Fano encoding procedure to following message ensemble:

[X]=[X1,X2,X3,X4,X5,X6,X7,X8,X9]

[P]=[0.49,0.14,0.14,0.07,0.04,0.02,0.02,0.01]

Find coding efficiency (η), L = average length of message.

10

6 a What is Granular noise? In which modulation it happens and why? How it can be

overcome?

8

b Explain frequency division multiplexing techniques. 8

7 a Explain the need of scrambler and descrambler circuit with suitable diagram. 8

b Explain in detail line coding techniques. 8

8 a What are different types of transmission media? Explain advantages of optical

fiber.

8

b Compare PCM, DM, DPCM techniques 8

List of Experiment:

Experiment

No Experiment Title

1 Study of AM Transmitter

2 Study of FM Transmitter

3 Study of Digital Transmitter

4 Study of AM modulation.

5 Study of FM modulation

6 Study of angle modulation

Assignments

Question

No.


1 Explain size of signal.

2 Give the classification of signals.


3 What is frequency modulation?

4 Find the Fourier transform of signum function denoted by sgn(t).

5 Explain power signal and hence prove the Parsevals power theorem.

6 Explain the concept Pre-emphasis.

7 Classify the Ideal and practical filters

8 Determine the Signal distortion over a communication channel.

9 Explain size of signal.

10 Give the classification of signals.


1 Give the classification of signals

2 Explain the concept Pre-emphasis.

3 Classify the Ideal and practical filters

4 Explain the concept Pre-emphasis


1 Describe two different types of AM transmitters with the help of block diagram.

2 Describe the expression for the AM signal for any general moduilating signal which is not sinusoidal.

3 Explain the Interference in angle modulated systems with neat sketch.

4 Discuss on FM demodulators

5 Explain the Base-band.

6 Describe the expression for the AM signal for any general moduilatingsignal

7 Explain instantaneous frequency with a suitable diagram.

8 Explain FM receiver with a neat block diagram


1 Explain in detail the process of generation of DSB waves with a neat sketch.

2 Describe the expression for the AM signal for any general moduilating signal

3 What if frequency modulation. Derive the mathematical expression for frequency modulation.

4 Describe in detail Armstrong method of FM generation with the help of a block diagram.

5 Explain in detail the process of generation of DSB waves with a neat sketch.


1 Explain with block diagram differential pulse-code modulation.

2 Describe the concept of eye diagram in modern digital communication system.

3 Differentiate clearly between analog communication and digital communication


systems with suitable example.

4 Write a short note on block coding.

5 Explain switched telephone system with a neat sketch.

6 Write algorithm for linear block codes.

7 Explain with block diagram differential pulse-code modulation.

8 Describe the concept of eye diagram in modern digital communication system.


1 Explain Delta modulation with a block diagram.

2 Describe the digital communication system with a neat sketch.

3 Write a short note on M-array communication

4 State and derive the Shanon’s equation.

5 Explain the capacity of discrete memory channel.

6 Describe the spread spectrum analysis.


Course plan for Electrical Machine Design.

Course Code ELE 308 Course Electrical Machine Design.

Prepared by Mr.N R. Kulkarni

Ms.L.M.Shankareppagol

Semester AY 2017-18, Sem II

Prerequisites This course requires the student to know about the design concepts of Electrical

Machines.

Course Outcomes: At the end of the course the students should be able to:

C0308.1 Understand2design concepts of Electrical Machines.

C0308.2 Apply3 basics of Electrical materials required for machine design.

C0308.3 Explain2three phase Transformer.

C0308.4 Analyze4design of DC Machines.

C0308.5 Explain2three phase Induction motor.

C0308.6 Discuss2 design of three phase Synchronous machines.

C0308.7 Discuss2 design of starters& regulators.


POs

COs

a b c d e f g h i j k

C0308.1 3

C0308.2 3

C0308.3 3

C0308.4 3

C0308.5 3

C0308.6 2

C0308.7 2



Course Contents

Unit

No.

Electrical Machine Design No. of

Hours

1

General:

Materials– Different types of materials used in construction of electrical machines.

Conductors: copper and aluminum conductors, properties and applications, standard

conductor sizes, copper space factor. Insulating materials: classification, basic

properties of common insulating materials, latest developments, insulation thickness

and rated voltage, space factor, testing of insulating materials. Magnetic materials:

different types of magnetic materials, Characteristics and magnetization curves, iron

losses, basis of selection for particular application.

ii) Heating, Cooling and ventilation – Types of enclosures, Modes of heat

dissipation. Heating and cooling curves. Calculations of heating and cooling time

constants, calculation of short time and continuous rating of electrical machine.

Temp. Rise and rating of machines. Cooling medium used; oil, hydrogen and water.

08

2

Basic Design principles

General consideration in the design, limitations in the design, Output coefficient and

theirstandard values for various machines, effect of size & ventilation on specific

electric and magnetic loading. Different Indian Standard Specifications (ISS).

Magnetic circuits – Formulae for air and iron parts, calculations for magnetic

circuitsofelectric machines, estimation of no load current, determination of leakage

fluxes and reactance calculations, design of electromagnets.Mechanical Design –

design of shafts, choice and types of bearings, determination of mechanical strength

of rotors, design consideration of cooling fans and frames.

06

3

Design of Transformers

Classification of transformer (Core type, Shell type transformer), Comparison of

core and Shell type transformer, Single phase & 3 Phase transformer connections,

Core Cross Section, Cooling of transformer, transformer Insulation using Oil & other

materials Output equation of transformer, Relation between Core Area & Weight of

08


iron & copper, Design for minimum cost, Design for minimum loss or maximum

efficiency, variation of Output &losses in transformer with linear Dimensions,

Design of Core (rectangular core, Square &stepped Cores), Variation of Core

Diameter, Selection of core areas & type of core, Choice of Flux Density, design of

winding, Windows Space Factor, Windows Dimensions, Overall Dimensions,

Simplified Steps for transformer Design. Resistance of Winding, Mechanical Forces,

No load currents, No load current of 1ph transformer, No load current of

3phtransformer, Design of Tank with Tubes, Core Design, Winding Design, Window

Area.

4

Design of DC Machines

Introduction & Applications, classification, Constructional Details, Stator,

Armature,Commutator, Brush Gear, Design output Equation, Interdependence of

specific &Electric loadings, Selection of no of poles, Core Length, Armature

diameter, Length of air gap, No of Armature coils, No of Armature Slots, Cross

Section of Armature Conductors, Insulation of armature winding, Slots Dimensions,

Poles Design (Area of poles, Height of Poles), length offender poles, Losses &

Efficiency (Rotational Losses, Losses Stray load losses, Efficiency).

Design of commutator and brush gear.

06

5

Design of AC Machines

i) Design of 3 Phase Induction Motor : Main Dimension, stator Winding,(Turns Per

Phase, Stator Conductors), Shapes Of Stator Slots, No of Stator Slots, Area of stator

Slots, Length Of Mean Turn, Stator Teeth, Stator Core, Rotor Design, length of air

gap, Relation For Calculations Of Length of air gap, No of Rotor Slots,(Rules For

Selecting Rotor Slots, Reduction of Harmonic torques), Design of rotor bars & Slots,

(Rotor Bar Currents, Area of Rotor Bar, shapes& Size Of Rotor Slots, Rotor Slot

Insulations), Design of End Rings.

ii) Design of Alternators: Output equation, determination of no. of poles, wdg and

insulation. Main dimensions, stator and rotor core, slots, conductors, armature wdg,

calculation of reactance& armature reaction, voltage regulation.

06

6

Design of starters and field regulators

Design of different types of motor starters, field regulators, design of heating coils

for various applications.

03


Reference Books:

Sr. No. Title of Book Author Publisher/Edition Topics

1) Theory and Performance and

Design of A.C. Machines

M.G. Say ELBS London, 3rd

Edition.

5

2) A Course in Electrical Machine

Design,

A.K.Sawhney DhanpatRai& sons

New Delhi

ALL

3) Design of Electrical Machines K. G. Upadhyay New age publication. ALL

4) Principles of Electrical Machine

Design

R. K. Agarwal S. K. Katariya and

sons.

ALL

5) Design of Transformers, IndrajitDasgupta TATA Mc-Graw

Hill Publication

ALL

Evaluation scheme:

Examination

Scheme


Max. Marks 100 50 50 200

Contact Hours/

week

3 ----- 02 06

Scheme of Marks


I

1 General Concepts 08

2 Basic Design principles 16

3 Design of Transformers 24

4 Design of DC Machines 24

II

5 Design of AC Machines 24

6 Design of starters and field regulators 16

• Weight age may differ.

Course Unitization



CO308.1



CO308.4

CO308.5



Section I

Unit

No

1 Unit Title General Concepts Planned

Hrs.

8

Lesson schedule

Class

No.


1 Different types of materials used in construction of electrical machines.

Conductors: copper and aluminum conductors, properties and applications, standard conductor

sizes, copper space factor.

2 Insulating materials: classification, basic properties of common insulating materials, latest

developments,

3 Insulation thickness and rated voltage, space factor, testing of insulating materials.

4 Magnetic materials: different types of magnetic materials, Characteristics and magnetization

curves, iron losses, basis of selection for particular application.

5 ii) Heating, Cooling and ventilation – Types of enclosures, Modes of heat dissipation.

6 Heating and cooling curves. Calculations of heating and cooling time constants,

7 Calculation of short time and continuous rating of electrical machine. Temp. rise and rating of

machines. Cooling medium used; oil, hydrogen and water.

Review Questions

Q1 Explain Different types of materials used in construction of electrical machines. C0308.1

Q2 Explain Different types of Insulating materials. C0308.1

Q.3 Explain basic properties of common insulating materials. C0308.1

Q.4 Explain in detail Heating and cooling curves C0308.1


Unit No

2 Unit Title Basic Design principles

Planned

Hrs.

06

Lesson schedule

Class

No.


1 General consideration in the design, limitations in the design, Output coefficient and their

standard values for various machines, effect of size & ventilation on specific electric and

magnetic loading. Different Indian Standard Specifications (ISS).

2 i) Magnetic circuits – Formulae for air and iron parts, calculations for magnetic

circuitsofelectric machines, estimation of no load current, determination of leakage fluxes and

reactance calculations, design of electromagnets.

3 ii) Mechanical Design – design of shafts, choice and types of bearings, determination of

mechanical strength of rotors, design consideration of cooling fans and frames.

Review Questions

Q1 Explain different Indian Standard Specifications (ISS) used in the design

principles of machines.

C0308.2

Q2 Explain the limitations in the design of machines. C0308.2

Q3 Explain the detail electric and magnetic loading. C0308.2

Q4 Explain in detail the mechanical design consideration. C0308.2

Unit No 3 Unit Title Design of Transformers

Planned

Hrs.

08

Lesson schedule

Class

No.


1 Classification of transformer (Core type, Shell type transformer), Comparison of core and

Shell type transformer, Single phase & 3 Phase transformer connections.

2 Core Cross Section, Cooling of transformer, transformer Insulation using Oil & other

materials Output equation of transformer, Relation between Core Area & Weight of iron &

copper

3 Design for minimum cost, Design for minimum loss or maximum efficiency, variation of

Output &losses in transformer with linear Dimensions, Design of Core (rectangular core,

Square &stepped Cores)

4 Variation of Core Diameter, Selection of core areas & type of core, Choice of Flux Density,

design of winding, Windows Space Factor, Windows Dimensions, Overall Dimensions, and

Simplified Steps for transformer Design.

5 Resistance of Winding, Mechanical Forces, No load currents, No load current of 1ph

transformer, No load current of 3phtransformer, Design of Tank with Tubes, Core Design,


Winding Design, Window Area.

Review Questions

Q1 Explain the Classification of transformer. C0308.3

Q2 Explain the different cooling methods used in transformers. C0308.3

Q3 Explain in detail the design consideration used in designing of transformers C0308.3

Unit No 4 Unit Title Design of DC Machines

Planned

Hrs.

06

Lesson schedule

Class

No.


1 Introduction & Applications, classification, Constructional Details, Stator,

Armature,Commutator.

2 Brush Gear, Design output Equation, Interdependence of specific &Electric loadings,

Selection of no of poles, Core Length.

3 Armature diameter, Length of air gap, No of Armature coils, No of Armature Slots, Cross

Section of Armature Conductors.

4 Insulation of armature winding, Slots Dimensions, Poles Design (Area of poles, Height of

Poles), length offender poles.

5 Losses & Efficiency (Rotational Losses, Losses Stray load losses, Efficiency).

Design of commutator and brush gear.

Review Questions

1 Describe the Constructional Details of DC machines. C0308.4

2 Explain in details the design procedure of Armature diameter. C0308.4

3 Explain in details the losses incorporated in DC machine. C0308.4

Unit No 5 Unit Title Design of AC Machines Planned

Hrs.

06

Lesson schedule

Class

No.


1 Design of 3 Phase Induction Motor: Main Dimension.

2 Stator Winding,(Turns Per Phase, Stator Conductors), Shapes Of Stator Slots, No of Stator

Slots, Area of stator Slots, Length OfMean Turn, Stator Teeth, Stator Core.

3 Rotor Design, length of air gap, Relation For Calculations Of Length of air gap, No of Rotor


Slots,(Rules For Selecting Rotor Slots.

4 Reduction ofHarmonic torques), Design of rotor bars & Slots, (Rotor Bar Currents, Area of

Rotor Bar, shapes& Size Of Rotor Slots, Rotor Slot Insulations), Design of End Rings.

5 ii) Design of Alternators: Output equation, determination of no. of poles, wdg and insulation.

Maindimensions stator and rotor core, slots, conductors, armature wdg, calculation of

reactance& armature reaction, voltage regulation.

Review Questions

1 Explain in detail the design consideration of 3 Phase Induction Motor C0308.5

2 Explain the harmonic leakage flux in squirrel cage induction rotor is not present? C0308.5

3 What is the condition for obtaining the maximum torque in case of 3 phase

induction motor?

C0308.5

4 What are the factors to be considered for estimating the length of air gap in

induction motor?

C0308.5

Unit No 6 Unit Title Design of starters and field regulators Planned Hrs. 03

Lesson schedule

Class

No.


1 Design of different types of motor starters

2 Design of different types of field regulators

3 Design of heating coils for various applications.

Review Questions

1 Describe the design consideration of different types of Starters C0308.6

2 Explain the Design of heating coils for various applications. C0308.6

3 Describe the design consideration of different types of regulators C0308.6


Course Title Electrical Machine Design

Duration 3 Hours Marks:

100

Instructions:




3] Assume necessary data if required.

1 a Explain Different types of materials used in construction of electrical

machines.

8

b Explain Different types of Insulating materials. 8

2 a Explain basic properties of common insulating materials. 8

b Explain different Indian Standard Specifications (ISS) used in the design

principles of machines.

Explain the limitations in the design of machines.

8

3 a Explain the different cooling methods used in transformers. 8

b Explain in detail the design consideration used in designing of transformers 8

4 a Explain in details the design procedure of Armature diameter. 8

b Explain in details the losses incorporated in DC machine. 8

5 a Explain the harmonic leakage flux in squirrel cage induction rotor is not

present?

8

b What is the condition for obtaining the maximum torque in case of 3 phase

induction motor?

10

6 a Describe the design consideration of different types of Starters 8

b Explain the Design of heating coils for various applications. 8

7 a Explain in detail the design consideration of 3 Phase Induction Motor 8

b Explain the harmonic leakage flux in squirrel cage induction rotor is not

present?

8

8 a Explain the Classification of transformer. 8

b Describe the design consideration of different types of regulators 8

List of Experiment:

Experiment

No

Experiment Title

1 Details and assembly of 3-phase transformer with design report.

2 Assembly of D.C. Machine.

3 Details and layout of AC winding with design report.

4 Assembly of 3- phases Alternator.


5 Assembly of 3- phase induction motor.(only sheet)

6 Report based on Industrial visit to a manufacturing unit(Transformer or Induction

motor).

Assignments

Question

No.

Unit No.1 -Assignment

1 To study different types of Insulating materials: classification, basic properties of

common insulating materials, latest developments, insulation thickness and rated voltage,

space factor, testing of insulating materials.


1 To study the Mechanical Design – design of shafts.

2 To study and analyze the design of Transformer.


1 To study and analyze the design of DC Machine.


1 To study and analyze the design of AC Machine.

2 To study and analyze the design of Starters.


1 Explain the harmonic leakage flux in squirrel cage induction rotor is not present?

2 What is the condition for obtaining the maximum torque in case of 3 phase induction motor?

3 Describe the design consideration of different types of Starters

4 Explain the Design of heating coils for various applications.





2 Explain the Classification of transformer.

3 Describe the design consideration of different types of regulators


Course plan for Power System-III

Course Code ELE 309 Course Power System-III

Prepared by Mr. Vikas S. Bhandare Semester AY 2017-18, Sem II

Prerequisites Basic concepts of power system, elements of power system, power flow and types

of faults.

Course Outcomes


C0309.1 Recall1 Power System Stability & Control

C0309.2 Explain2 Different Types of Power System Stability

C0309.3 Describe2 the Methods Of Improving Stability

C0309.4 Compare5 Different Methods Of Power System Control With Steady State

Analysis And Dynamic Response Of An Isolated Power System

C0309.5 Recognize4Optimal Power System Operation

C0309.6 Demonstrate3 Power System Security


POs

COs a b c d e f g h i j k

C0309.1 2

C0309.2 3

C0309.3 2

C0309.4 2 2

C0309.5 1

C0309.6 2


Course Contents

Unit

No.

Title No. of

Hours


1. Introduction to Power System Stability & Control: Power System Stability,

Classification Power system Stability, State Operation & System. Security :-

Review, System Dynamics Problems Current Status & Recent Trends, System

Model, Dynamics of Synchronous Machine [Swing equation] NUMERICALS

EXPECTED

06

2. Unit 2: Power system Stability: Factors affecting Transient Stability, Swing

Equation Solution [Point By Point Method, Equal Area Criteria], Transient

Stability Limit, Critical Clearing Angle and Critical Fault Clearing Time, Fault

Shunts and Impedances of Fault Shunts, Multi Machine Stability,

NUMERICALSEXPECTED.

10

3. Unit 3: Methods of Improving Stability: Transient Stability Enhancements:-

High Speed Fault clearing, Reduction of transmission system reactance ,

regulated shunt compensation , dynamic Braking , Reactor Switching,

Controlledsystem Separation & Load Shedding – High Speed Excitation &

Control, Discontinuous Excitation Control, Small Signal Stability

Enhancement-Power system Stabilizers, Supplementary Control of SVC

10

4. Unit 4: Power System Control: Automatic Generation Control, Load Frequency

Control (Single Area & Two Area Case),Automatic Voltage Control, Reactive

Power Control, NUMERICALS EXPECTED

10

5. Unit 5: Optimal Power System Operation: Load Forecasting, Optimal Unit

commitment, Economic load Dispatch [with/without Transmission line Losses

& Generator Limits], NUMERICALS EXPECTED

08

6 Unit 6: Power System Security: System State Classification, Security Analysis,

Contingency Analysis, Sensitivity Factors, Factors Affecting Power System

Security.

04

Reference Books:


1. Modern Power System

Analysis.

I. J. Nagrath, D. P.

Kothari,

Tata McGraw

Hill Publishing Co.

Ltd., 2003

1-8

2 Electrical power System. Ashfaq Husain

CBS Publishers and

Distributors,

Fifth Edition 2007

1-5

3. Power System Analysis. Grainger John J and

W D Stevenson McGrawHill, 1994 1-2


Evaluation scheme:

Examination

Scheme


Max. Marks 100 25 -- 125

Contact Hours/

week

4 02 06

Scheme of Marks

• Weightage may differ.

Course Unitization



CO309.2


CO309.4


CO309.6


I

1 Introduction to Power System Stability & Control 16

2 Power system Stability 24

3 Methods of Improving Stability 24

II

4 Power System Control 32

5 Optimal Power System Operation 24

6 Power System Security 8



Section I

Unit No Unit Title

Planned Hrs.

1 Introduction to Power System Stability & Control 4

Lesson schedule

Class

No.


1 Power System Stability, Classification Power system Stability

2 State Operation & System, Security :-Review

3 System Dynamics Problems Current Status & Recent Trends

4 System Model

5 Dynamics of Synchronous Machine [Swing equation]

6 NUMERICALS

Review Questions

Q1 Explain different types of stability in detail. C0309.1

Q2 State and prove the swing equation from the first principal of rotor dynamics. C0309.1

Unit No


2 Power system Stability 10

Unit Outcomes

Lesson schedule

Class

No.


1 Factors affecting Transient Stability

2 Swing Equation Solution Point By Point Method

3 EqualArea Criteria

4 Transient Stability Limit

5 Detail about Critical Clearing Angle

6 Critical Fault ClearingTime

7 Fault Shunts and Impedances of Fault Shunts

8 Multi Machine Stability

9 NUMERICALS

Review Questions

Q1 What is equal area criterion for stability assessment? C0309.2

Q2 With suitable example explain voltage collapse. C0309.2

Q3 Explain factor affecting transient stability. C0309.2

Q4 Explain swing equation point by point mehod. C0309.2

Unit No



3 Methods of Improving Stability 10

Unit Outcomes

Lesson schedule

Class

No.

Explain different types Power System stability

1 Transient Stability Enhancements

2 High Speed Fault clearing, Reduction of transmission system

Reactance

3 regulated shunt compensation

4 dynamic Braking

5 Reactor Switching,

6 High Speed Excitation & Control, Discontinuous

7 Controlled system Separation & Load Shedding Stabilizers,

8 Excitation Control,

9 Small Signal Stability Enhancement-Power system

10 Supplementary Control of SVC

Review Questions

Q1 Explain High Speed Fault clearing, Reduction of transmission system

Reactance

C0309.3

Q2 Explain the method of improving voltage stability of a system C0309.3

Q3 Explain Small Signal Stability Enhancement-Power system C0309.3

Unit

No

4 Unit Title Power System Control Planned Hrs. 10

Lesson schedule

Class

No.


1 Load frequency control (Single area).

2 Load frequency control (two areas).

3 Modeling of Generator.

4 Modeling of Governor, prime mover, Load.

5 Load frequency control and economic dispatch.

6 Automatic generation control.

7 Steady state analysis response of an isolated power system.

8 Dynamic response of an isolated power system.

9 Automatic voltage control

10 Reactive power control.

Review Questions

Q1 1. Explain the objectives and functions of Automatic generation Control (AGC)

in a power system.

C0309.4


2. Describe the function of AVR with a neat block diagram.

3. Explain how mathematical model of speed governing system is developed

for Automatic generation control.

4. Distinguish AVR and ALFC control loops of a generator.

5. Explain what is meant by control area. Obtain the transfer function model

and explain ALFC of a single area of an isolated power system.

6. Explain reactive power control.

Unit

No

5 Unit Title Optimal Power System Operation Planned

Hrs.

8

Lesson schedule

Class

No.


1 System constraints.

2 Generator operating cost.

3 Input-output and incremental fuel characteristics of a generating unit.

4 Optimal operation of generators on a bus bar, algorithm .

5 Flow chart for optimal power flow study.

6 Optimal unit commitment.

7 Spinning reserve, thermal and hydro constraints.

8 Numerical expected.

Q1 1. With the help of a flow chart, explain the dynamic programming method in

unit commitment.

2. Explain the problems and constraints found in unit commitment. How they

are solved?

3. Explain the need of an optimal unit commitment problem.

4. Explain thermal and hydro constraints.

5. Explain Input -output and incremental fuel characteristics.

6. Discuss the Flow chart for optimal power flow study.

C0309.5

Unit

No

6 Unit Title Power system Security Planned Hrs. 4

Lesson schedule

Class

No.


1 Brief Introduction to- System state classification.

2 Security analysis.

3 Contingency analysis.

4 Sensitivity factors.

Q 1. Define system security and explain major functions involved in the system

security.

2. Explain briefly the factors affecting the system security.

3. Explain briefly the problem of detection of network problems.

C0309.6


4. Explain contingency analysis with the help of flow chart.

5. Explain the sensitivity method of contingency evaluation.

6. Explain calculation of network sensitivity factor and contingency ranking.

7. Write short notes on:

i. Spinning reserve

ii. Importance of unit commitment

iii. Detection of network problems

iv. Power system contingency analysis

8. Define the following

i. Optical dispatch

ii. Post contingency

iii. Secure dispatch

iv. Secure post-contingency.

9. With the block diagram, explain AC power flow security analysis.


Course Title : Power System -III

Duration 3 Hrs. Marks

100

Instructions:

a. Question 1 & Question 4 is Compulsory

b. Solve any three question from each section

1 a Derive the swing equation of a synchronous machine with usual

notations. Mention the use of swing equation

8

b Asynchronous generator of reactance 1.20 per unit is connected to an

infinite bus bar |V|=1.0 p.u. through transformer and a transmission line

having total reactance 0.60 p.u the generator no load is 1.20 p.u and its

inertia constant is H=4MW-secMVA. The resistance and machine

damping may assumed negligible. The system frequency is 50 Hz .

calculate the natural frequency of oscillations if the generator is loaded

to 50 %

8

2 a With suitable example explain voltage collapse. 8

b Describe the Dynamic characteristics of Synchronous machine. 8

3 a Explain with neat diagram load frequency control of an isolated system 8

b Explain the Equal area criterion. 8

4 a A 250MW, 50Hz turbine generator set has a speed regulation of 5%

based on its own rating. The generator frequency decreases from 50Hz

to steady state value of 49.7 Hz. Determine the increase in turbine

power output.

10


b Discuss the Factors affecting transient stability. 8

Section-II

5 a Explain the concept of equal area criterion. How can it be used to study

transient stability?

8

b Write a short note on unit commitment 8

6 a A 50Hz generator of reactance 1 pu is connected to an infinite bus

through a line reactance 0.5 pu E=1.1 pu and V= 1 pu. The inertia

constant is 5MW-sec/MVA. The generator is loaded to 50% of the

maximum power limit. Find the frequency of natural oscillations.

8

b With suitable example explain ‘voltage collapse’ 8

7 a Distinguish between steady state, transient and dynamic stability 8

b Derive co-ordination equation for economic load scheduling in a large

power system. Give the sequence of steps to determine economic

generation of various plants for a given load demand.

8

8 a Discuss system state classification and security analysis. 10

b Discuss the procedure for solving the swing equation using point by

point method.

8

List of Experiment

Expt. No Experiment Title

1 Single phase half controlled converter using R and RL load

using MATLAB / SIMULINK

2 Single phase fully controlled converter using R and RL load


3 Three phase fully controlled converter using R and RL load


4 Single phase AC voltage regulator using MATLAB /

SIMULINK

5 Formation of Y bus matrix by inspection / analytical method

using MATLAB Software

6 Formation of Z bus using building algorithm using MATLAB

Software

7 Fast decoupled load flow analysis using MATLAB Software

8 Fault analysis using MATLAB Software

Assignments

Question

No.

Unit No.1 Assignment


1

Derive the swing equation of a synchronous machine with usual notations. Mention the

use of swing equation

2

Asynchronous generator of reactance 1.20 per unit is connected to an infinite bus bar

|V|=1.0 p.u. through transformer and a transmission line having total reactance 0.60 p.u

the generator no load is 1.20 p.u and its inertia constant is H=4MW-secMVA. The

resistance and machine damping may assumed negligible. The system frequency is 50 Hz

. calculate the natural frequency of oscillations if the generator is loaded to 50 %

3

A 250MW, 50Hz turbine generator set has a speed regulation of 5% based on its own

rating. The generator frequency decreases from 50Hz to steady state value of 49.7 Hz.

Determine the increase in turbine power output.

4 Explain the concept of equal area criterion. How can it be used to study transient

stability?


1) Power System Stability, Classification Power system Stability,

2) Factors affecting Transient Stability

3) Swing Equation Solution Point By Point Method

4) Explain the objectives and functions of Automatic generation Control (AGC) in a power

system.


1) Explain Reactive Power Control.

2) Explain how mathematical model of speed governing system is developed for Automatic

generation control.

Explain reactive power control.

3) Distinguish AVR and ALFC control loops of a generator.

4) Explain what is meant by control area. Obtain the transfer function model and explain

ALFC of a single area of an isolated power system.


1) Explain Four Problem Associated with Power Quality issue in detail and its Remedial

Measure?

What is mean by Harmonic? explain Harmonic in terms of

i) order ii) Phase Sequence iii) Magnitude iv) Classification



1) Explain Why even Harmonic is absent in 1 phase 3 phase power system?

2) How severe the Harmonics is reduced by using 12 pulse converters when transformer is

Dy11?

3) Explain how the CFL lamp affects Power Quality issue?

4) Perform Matlab simulation Passive Shunt compensator to improve stability


1) Perform Matlab simulation Passive Series compensator to improve stability

2) Perform Matlab simulation STATCOM / SSSC compensator to improve stability

3) Perform Matlab simulation UPQC compensator to improve stability


Course plan for Electrical Drives.

Course Code ELE 310 Course Title Electrical Drives.

Prepared by Mr. PravinMagdum

Mr I. D. Pharne

Semester AY 2017-18, Sem II

Prerequisites The student should know about the basic concepts of power electronics and

electrical machines.

Course Outcomes


C0310.1 Describe1 the construction/working principle of different types of drives and types

of loads and their characteristics.

C0310.2 Understand2control of dc motor by Single & Three phase Converter.

C0310.3 Understand2the control of dc motor by Chopper

C0310.4 Explain1 Induction Motor Drives by Stator Side Control & Stator Frequency

Control Methods.

C0310.5 Sumarise2 the various types of induction motor drives Rotor side control

C0310.6 Classify3 the Synchronous Motor Drives and Control Mechanisms.


POs

COs

a b c d e f g h I j K

C0310.1 3

C0310.2 2

C0310.3 2 3

C0310.4 2

C0310.5 3

C0310.6 3


Course Contents

Unit

No.

ELECTRICAL DRIVES No. of

Hours

1. INTRODUCTION: Concept of Electrical drive, Classification of Electrical

drives, Parts of Electrical drive, Types of loads and their characteristics, Motor

load interaction, Dynamic conditions in Electrical drives, Stability

considerations in Electrical drives

4


2. CONTROL OF DC MOTOR BY SINGLE & THREE-PHASE

CONVERTERS: Introduction, review of Classification of dc motors and their

speed control, Electric braking of dc motors, Block Diagram of Electrical

Drive, Single phase Controlled Converter for Separately Excited dc motor

Drives, DC series Motor Drives, Introduction to 4 quadrant operation of dc

motor, Single phase Dual Converter for Four Quadrant Operation. Three phase

semi converter Fed with Separately Excited dc Motor, Three Phase Full

Converter Fed with Separately Excited dc motor, Three phase semi converter

Fed dc Series Motor, Three Phase Full- converter Fed dc Series Motor

8

3. CONTROL OF DC MOTOR BY CHOPPER: Introduction, Principle of

chopper Operation, Control Techniques Used in dc choppers, Chopper

Configuration, Classification of Chopper Circuits (single quadrant and four

quadrant operation of chopper), Performance of chopper Fed Separately Excited

dc Motors, Introduction to Closed Loop Control of Drives

6

4. INDUCTION MOTOR DRIVES-STATOR SIDE CONTROL: stator voltage

control: Introduction, review of types of 3 phase Induction motors, Torque-

speed characteristic of 3 phase Induction motor, Stator Voltage Control using

different 3 phase AC voltage controllers, Introduction to closed loop control

using stator voltage control, introduction to 4 quadrant AC voltage controllers

Stator frequency control: Introduction, Variable Frequency Characteristics,

Block Diagram of Variable Frequency Speed Control, V/f control, Voltage

Source Inverter (VSI) fed induction motor drive, Braking and multi quadrant

operation of VSI fed induction motor drive, Variable Frequency Control From a

current Source inverter (CSI), comparison of VSI and CSI drives, Introduction

of Closed loop speed Control for VSI fed Induction Motor Drives, Basic

operation of Pulse Width Modulated Inverter Fed Induction motor Drive

12

5. INDUCTION MOTOR DRIVES: Rotor side control: Introduction,

Conventional Rotor Resistance Control, Rotor Resistance Control using power

converters, Slip Power Recovery Schemes (Static Kramer drive, Static

Scherbius drive), Introduction to Vector control of I

6

6. SYNCHRONOUS MOTOR DRIVES: Introduction, review of synchronous

motor types & operation, Speed Control of Synchronous Machines in self

control mode and true synchronous mode, Load- commutated Inverter Fed

Synchronous Motor Drive, Closed loop Speed control of Synchronous Motor

using Load commutated Inverter, Operation of Voltage Source Inverter Fed

Synchronous Motor Drive.

6


Reference Books


1) Power Semiconductor Drives S. Sivanagaraju, M. B.

Reddy, A. M. Prasad, PHI, Delhi

All

2) Fundamentals of Electrical

Drives

G. K. Dubey, CRC

Press, II edition

Narosa

Publication

4,5,6,7

3) Electric Drives P. K. Sen 3,4,5,6,7

4) Electric Drives: Concepts &

Applications

VedamSubrahmanyam

Tata Mc-Graw-

Hill

5,6,7

Evaluation scheme:

Examination

Scheme


Max. Marks 100 25 50 175

Contact Hours/

week

4 ----- 02 06

Scheme of Marks


I

1 Introduction 16

2 Control of dc motor by single & three-phase converters 18

3 Control of dc motor by chopper 16

II

4 Induction motor drives-stator side control 16

5 Induction motor drives 18

6 Synchronous motor drives 16

Marks scheme may get change


Course Unitization



CO310.2


CO310.4


CO310.6


Unit No 1 Unit Title Introduction Planned

Hrs.

4

Lesson schedule

Class

No.


1 Concept of Electrical drive,Classification of Electrical drives

2 Parts of Electrical drive, Types of loads and their characteristics

3 Motor load interaction, Dynamic conditions in Electrical drives

4 Stability considerations in Electrical drives

Review Questions

Q1 State and explain different sources used for D.C. and A.C. drives. C0310.1

Q2 What is meant by drives, explain basic block diagram of electrical drives. C0310.1

Unit No

2 Unit Title Control of dc motor by single & three-phase

converters

Plann

ed

Hrs.

8

Lesson schedule

Class

No.


1 Introduction, review of Classification of dc motors and their speed control


2 Electric braking of dc motors, Block Diagram of Electrical Drive

3 Single phase Controlled Converter for Separately Excited dc motor Drives

4 DC series Motor Drives, Introduction to 4 quadrant operation of dc motor

5 Single phase Dual Converter for Four Quadrant Operation

6 Three phase semi converter Fed with Separately Excited dc Motor, Three Phase Full

Converter Fed with Separately Excited dc motor,

7 Three phase semi converter Fed dc Series Motor

8 Three Phase Full- converter Fed dc Series Motor

Review Questions

Q1 Explain multi-quadrant operation for drives. C0310.2

Q2 Explain Electric braking of dc motors C0310.2

Q3 Explain Three Phase Full Converter Fed with Separately Excited dc motor, C0310.2

Unit No 3 Unit Title CONTROL OF DC MOTOR BY CHOPPER Planned

Hrs.

6

Lesson schedule

Class

No.


1 Principle of chopper Operation

2 Chopper Configuration

3 Classification of Chopper Circuits (single quadrant and four quadrant operation of chopper)

4 Performance of chopper Fed Separately Excited dc Motors

5 Control Techniques Used in dc choppers

6 Introduction to Closed Loop Control of Drives

Review Questions

Q1 Explain Closed Loop Control of Drives C0310.3

Q2 Explain Performance of chopper Fed Separately Excited dc Motors C0310.3

Unit No 4 Unit Title NDUCTION MOTOR DRIVES-STATOR

SIDE CONTROL

Planned

Hrs.

12

Lesson schedule

Class

No.



1 Introduction, review of types of 3 phase Induction motors

2 Torque-speed characteristic of 3 phase Induction motor

3 Stator Voltage Control using different 3 phase AC voltage controllers

4 Introduction to closed loop control using stator voltage control

5 introduction to 4 quadrant AC voltage controllers

6 Introduction, Variable Frequency Characteristics, Block Diagram of Variable Frequency

Speed Control

7 V/f control, Voltage Source Inverter (VSI) fed induction motor drive

8 Braking and multi quadrant operation of VSI fed induction motor drive

9 Variable Frequency Control From a current Source inverter (CSI),

10 comparison of VSI and CSI drives

11 Introduction of Closed loop speed Control for VSI fed Induction Motor Drives

12 Basic operation of Pulse Width Modulated Inverter Fed Induction motor Drive

Review Questions

1 A 220 V, 200 A, 800 rpm dc separately excited motor has an armature

resistance of 0.06 ohms The motor armature is fed from a variable voltage

source with an internal resistance of 0.04 ohms. Calculate the minimal voltage

of the variable voltage source when the motor is operating in regenerative

braking at 80% of rated motor torque and 600 rpm.

C0310.4

2 State different methods of braking for dc separately excited mo tor and explain

any one of them in detail

C0310.4

3 Explain speed contro1 of separately excited dc motor using combined armature

and field control. Explain with diagrams the limitations on maximum allowable

torque and power for complete speed range.

C0310.4

4 A 200 V, 875 rpm, 150 A separately excited dc motor has an armature

resistance of 0.06 ohms. It is fed from a single phase fully controlled rectifier

from an ac source of 220 V, 50 Hz. Assuming continuous conduction calculate :

i) firing angle for rated motor torque and 750 rpm, firing angle for rated motor

torque and (-500) rpm

C0310.4

Unit No 5 Unit Title INDUCTION MOTOR DRIVES Planned

Hrs.

6

Lesson schedule

Class

No.


1 Introduction

2 Conventional Rotor Resistance Control


3 Rotor Resistance Control using power converters

4 Slip Power Recovery Schemes(Static Kramer drive)

5 Slip Power Recovery Schemes(Static Scherbius drive)

6 Introduction to Vector control of I

Review Questions

1 Explain chopper control of separately excited dc motor during dynamic braking

operation. Derive the equations of effective value of resistance as a function of

duty cycle.

C0310.5

2 Explain with neat diagram slip power recovery scheme for speed control of slip

ring induction motor. Draw speed torque characteristics with varying firing

angle of the inverter.

C0310.5

Unit No 6 Unit Title SYNCHRONOUS MOTOR

DRIVES

Planned

Hrs.

6

Lesson schedule

Class

No.


1 Introduction

2 review of synchronous motor types & operation

3 Speed Control of Synchronous Machines in self control mode and true synchronous mode

4 Load- commutated Inverter Fed Synchronous Motor Drive

5 Closed loop Speed control of Synchronous Motor using Load commutated Inverter

6 Operation of Voltage Source Inverter Fed Synchronous Motor Drive

Review Questions

1 Explain with neat diagram slip power recovery scheme for speed control of

slip ring induction motor. Draw speed torque characteristics with varying

firing angle of the inverter.

C0310.6

2 Explain slip power recovery using Cascade converter, C0310.6


Course Title : ELECTRICAL DRIVES

Duration 3 Hours Mark:

100

Instructions:




Section-I

1 a What are the methods to obtain variable dc voltage for speed control of'dc

motors? Explain?

8

b State and explain different sources used for d.c. and a.c. drives. 8

2 a Explain various components of load torque. Hence draw steady state load

torque speed curves for fan, hoist Traction and constant power and

explain the same.

10

b A motor drives two loads. One has rotational motion, It is coupled to the

motor through a reduction gear with a = 0.1 (a = no. of teeth on motor side

gear/ no. of teeth on load side gear) and efficiency of 90%. The load has a

moment of inertia of I0kg-m2 and a torque of 10 N-m. Other load has

translational motion and consists of 1000 kg weight to be lifted up at a

uniform speed of 1.5 m/sec. Motor has an inertia of 0.2 kg-m2 and runs at

constant speed of M 2 0 rpm. Determine equivalent inertia referred to the

shaft

8

3 a Explain the terms, Constant torque drive and Constant power drive.

Explain with neat diagram, closed loop torque control

8

b When load torque fluctuates widely, explain how' continuous duty motor

of smaller rating can be used for short time loads having higher peak

torque than the motor capacity

8

4 a State different methods of braking for dc separately excited mo tor and

explain any one of them in detail

8

b A 220 V, 200 A, 800 rpm dc separately excited motor has an armature

resistance of 0.06 ohms The motor armature is fed from a variable voltage

source with an internal resistance of 0.04 ohms. Calculate the minimal

voltage of the variable voltage source when the motor is operating in

regenerative braking at 80% of rated motor torque and 600 rpm.

8

Section-II

5 a Explain speed contro1 of separately excited dc motor using combined

armature and field control. Explain with diagrams the limitations on

maximum allowable torque and power for complete speed range.

8

b A 200 V, 875 rpm, 150 A separately excited dc motor has an armature

resistance of 0.06 ohms. It is fed from a single phase fully controlled

rectifier from an ac source of220 V, 50 Hz. Assuming continuous

conduction calculate : i) firing angle for rated motor torque and 750 rpm,

firing angle for rated motor torque and (-500) rpm

10

6 a Explain chopper control of separately excited dc motor during dynamic

braking operation. Derive the equations of effective value of resistance as

a function of duty cycle.

8

b A230 V, 960 rpm and 200 A separately excited dc motor has armature

resistance of 0.02 ohms. The motor is fed from a chopper which provides

regenerative operation. The source has a voltage of 230 V. Assume

8


continuous conduction. If maximum permissible duty ratio is limited to

0.95 and the maximum permissible motor armature current is twice the

rated, draw the circuit diagram showing reference direction for voltage

and current. Calculate maximum permissible motor speed obtainable if

field voltage is constant.

7 a Explain with neat diagram slip power recovery scheme for speed control

of slip ring induction motor. Draw speed torque characteristics with

varying firing angle a of the inverter.

8

b Explain brushless dc motor with the help of neat diagrams and

waveforms.

8

8 a Write a note on vector or field oriented control explaining its dc drive

analogy.

8

b Explain the effect of non-sinusoidal voltage supply with half wave

symmetry on induction motor.

8

Lab Plan

Expt. No Experiment Title

1 Study of Thyristor controlled D.C Drive

2 Study of three phase fully controlled converter and speed control of dc shunt motor and

resistive load

3 Study of Chopper Fed DC Motor

4 Study of Regenerative/ Dynamic breaking operatation for DC motor

5 Study of PWM inverter fed three phase induction motor control

6 Study of VSI fed 3-phase Induction Motor (using V/F control PWM Inverter)

7 Study of permanent magnet synchronous motor drive fed by PWM inverter

8 Study of VSI / CSI fed Induction motor Drive analysis

Assignments

Question

No. Unit No.1 -Assignment

1 What are the advantages of electrical drives?

2 State various parts of electrical drives. What are the functions of power modulators?

3 Explain various components of load torque. Hence draw steady state load torque

speed curves for fan, hoist Traction and constant power and explain the same.


4

A drive has the following parameters:

T = 250 – 0.3N, N-m, where N is the speed in rpm,

Load torque Tl = 150 N-m,


1 State various parts of electrical drives. What are the functions of power modulators?

2 State and explain the functions of various converters.

3

A drive has the following parameters:


Load torque Tl = 100 N-m,

Initially the drive is operating in steady state. The characteristics of load torque

arechangedto-100 N-m. Calculate initial and final equilibrium speeds.

4

A motor drives two loads. One has rotational motion, It is coupled to the motor

through a reduction gear with a = 0.1 (a = no. of teeth on motor side gear/ no. of

teeth on load side gear) and efficiency of 90%. The load has a moment of inertia of

I0kg-m2 and a torque of 10 N-m. Other load has translational motion and consists of

1000 kg weight to be lifted up at a uniform speed of 1.5 m/sec. Motor has an inertia

of 0.2 kg-m2 and runs at constant speed of M 2 0 rpm. Determine equivalent inertia

referred to the shaft


1 Write a brief note on sources employed in electrical drives.

2 State and explain the functions of various converters.

3 Explain various components of load torque. Hence draw steady state load torque

speed curves for fan, hoist Traction and constant power and explain the same.

4 A drive has the following parameters:


Load torque Tl = 40 N-m,Initially the drive is operating in steady state. The

characteristics of load torque arechangedto-40 N-m. Calculate initial and final

equilibrium speeds

5 A motor drives two loads. One has rotational motion, It is coupled to the motor

through a reduction gear with a = 0.1 (a = no. of teeth on motor side gear/ no. of

teeth on load side gear) and efficiency of 90%. The load has a moment of inertia of

I0kg-m2 and a torque of 10 N-m. Other load has translational motion and consists

of 1000 kg weight to be lifted up at a uniform speed of 1.5 m/sec. Motor has an

inertia of 0.2 kg-m2 and runs at constant speed of M 2 0 rpm. Determine equivalent

inertia referred to the shaft.



1 State different methods of braking for dc separately excited mo tor and explain any

one of them in detail

2 Explain various modes of the operation of drives.

3 Explain the terms, Constant torque drive and Constant power drive. Explain with

neat diagram, closed loop torque control.

4 A 220 V, 200 A, 800 rpm dc separately excited motor has an armature resistance of

0.06 ohms The motor armature is fed from a variable voltage source with an

internal resistance of 0.04 ohms. Calculate the minimal voltage of the variable

voltage source when the motor is operating in regenerative braking at 80% of rated

motor torque and 600 rpm.

5 Explain speed contro1 of separately excited dc motor using combined armature and

field control. Explain with diagrams the limitations on maximum allowable torque

and power for complete speed range.


one of them in detail



neat diagram, closed loop torque control


one of them in detail.

3 A 220 V, 200 A, 800 rpm dc separately excited motor has an armature resistance of

0.06 ohms The motor armature is fed from a variable voltage source with an

internal resistance of 0.04 ohms. Calculate the minimal voltage of the variable

voltage source when the motor is operating in regenerative braking at 80% of rated

motor torque and 600 rpm.

4 Explain speed contro1 of separately excited dc motor using combined armature and

field control. Explain with diagrams the limitations on maximum allowable torque

and power for complete speed range.

5 A 200 V, 875 rpm, 150 A separately excited dc motor has an armature resistance of

0.06 ohms. It is fed from a single phase fully controlled rectifier from an ac source

of 220 V, 50 Hz. Assuming continuous conduction calculate : i) firing angle for

rated motor torque and 750 rpm, firing angle for rated motor torque and (-500) rpm


neat diagram, closed loop torque control


one of them in detail.

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