Syllabus  |   Lectures  |   Downloads  |   FAQ  |   Ask a question  |  
Course Co-ordinated by IIT Kharagpur
Coordinators
 
Prof. T.K. Bhattacharya
IIT Kharagpur

 

Download Syllabus in PDF format



Untitled Document
 

Synchronous machines: types, windings, emf equation, generator and motor operations, phasor diagrams; testing, power angle characteristic, v-curves, stability; starting of synchronous motor.Analysis of salient pole synchronous machines.

Single phase induction motor: Rotating and pulsating field, development of equivalent circuit based on double revolving field theory, torque-slip characteristic, performance analysis; Starting by phase spliting; selection of capacitor value for starting and running condtions.

D.C machines: Construction, armature windings; emf and torque equations; generator and motor mode of operations; armature reaction, commutation; characteristics of D.C motors; starting, speed control and braking of D.C motor.

 
MODULE - 1 General Concepts of Conventional Rotating Machines.

Module

Lec no.

Topics

General Concepts of Conventional Rotating Machines.

1

Introduction, scope of the course. Types of rotating machines- common underlying principle of operation. Torque production due to interaction of two sets of magnets.

2

Conditions to be fulfilled for production of steady electromagnetic torque in conventional rotating machines. Concept of electrical & mechanical degrees.

3

Operation of machines as motor or generator. Concept of loading a motor and generator.

Introduction to Synchronous machines.

4

Types of synchronous machines & their constructional features. Infinite bus & its concept.

5

Armature winding, winding factors for 60 ° and 120° phase spread windings.Expression for induced voltage.

6

Field mmf, armature mmf and resultant mmf. Space and time phasor diagrams for generator operation under no load and load conditions.Synchronous impedance.

Synchronous Generators (Alternators).

7

Salient pole and non salient pole generators and their uses in hydro and thermal power plants.

8

Different methods of synchronisation with the bus.

9

Complete phasor diagrams of non-salient pole synchronous generators connected to infinite bus for lagging , leading and upf loads. Regulation.

10

Equivalent circuit and estimation of regulation by various methods viz. Synchronous impedance method, zpf method.

11

Problem solving on regulation.

12

Expression for input and output power. Simplified expression for power when armature resistance is neglected. P- δ characteristic and operating point.

13

Circle diagram, O-curves and V-Curves and their implications. Effect of excitation variation.

14

Stability of synchronous generator, Swing equation, hunting and equal area criteria.

Synchronous Motors.

15

Starting methods of synchronous motor: use of damper bars.

16

Complete phasor diagrams under various power factors and expression of power.

17

Circle diagram, O-curves and V-Curves and their implications. Effect of excitation variation.

18

Stability of synchronous motor, Swing equation, hunting and equal area criteria.

Salient pole synchronous motor & generator.

19

Bondel's two reaction theory, direct axis and quadrature axis synchronous reactances.

20

Phasor diagrams under different power factor conditions and expression for power for generator and motor modes.

21

Reluctance power and phasor diagram with zero excitation for generator and motor modes.

22

Slip test to estimate direct axis and quadrature axis synchronous reactances.

23

Qualitative analysis of sudden short circuit phenomenon of synchronous generator. Transient and subtransient reactances.

Single phase induction motor.

24

General description of the motor and constructional features; Pulsating and Rotating fields.

25

Analysis of single phase motor based on double revolvimg field theorem.

26

Devolopment of equivalent circuit and torque expression.

27

Torque slip characteristic and its features.

28

Split phase induction motor incorporating starting torque.

29

Selection capacitamce values for maximum torque.

D.C Machines.

30

Types of armature windings and parallel paths.

31

D,C generator; EMF equation and torque equation.

32

Shunt generator; voltage build up and load characteristics.

33

Compound generator; problem solving.

34

D.C shunt motor and its starting.

35

Characteristics of shunt motors.

36

Speed control of shunt motor.

37

Braking of shunt motors: various methods.

D.C series motor and its characteristics

38

Speed control of D.C series motor.

39

Problem solving on D.C machines.

40

Conclusions of the course.

  1. Electrical Technology.


  1. Electric Machinery Fundamentals, by Stephen J. Chapman McGraw-Hill International, 1991.

  2. Electric Machinery A.E Fitzgerald and Charles Kingsley, 6th edition.

  3. The performance & Design of A.C Machines by M.G Say.

  4. Electric Machines and Power Systems by Vincet Del Toro Prentice-Hall, 1985.

  5. Electrical Machinery by P.S.Bimhra 2000, Khanna publishers New Delhi.

  6. Electrical Machines by J.Nagrath & D.P.Kothari.

  7. The Performance and Design of AC. Commutator Motors by E. Openshaw Taylor.


  1. Principles of Alternating-Current Machinery by Ralph R. Lawrence McGraw-Hill, 1953.

  2. Theory of Alternating of Alternating Current Machinery by A.S Langsdorf.

  3. Electric Machine Theory for Power Engineers by Van E. Mablekos Harper & Row, Publishers, 1980.

  4. D-C and A-C Machines Based on Fundamental Laws, by Michael Liwschitz-Garik and Robert T.Well Affiliated East-West Press Pvt. Ltd. 1968.

  5. Generalized theory of Electrical Machine, by P.S.Bimhra.



Important: Please enable javascript in your browser and download Adobe Flash player to view this site
Site Maintained by Web Studio, IIT Madras. Contact Webmaster: nptel@iitm.ac.in