Table of Contents

CHAPTER 1: MAGNETIC CIRCUITS

1.1 MAGNETIC CIRCUITS

1.2 HYSTERESIS

1.3 RELATIONSHIP BETWEEN FLUX, EMF AND FORCE

1.4 SINUSOIDAL EXCITATION

1.5 PERMANENT MAGNET

CHAPTER 2: TRANSFORMERS

2.1 IDEAL TRANSFORMER

2.2 PRACTICAL TRANSFORMER

2.3 VOLTAGE REGULATION

2.4 EFFICIENCY

2.5 TESTS ON TRANSFORMERS

2.6 AUTOTRANSFORMER

2.7 THREE-PHASE TRANSFORMERS

2.8 HARMONICS IN THREE-PHASE TRANSFORMER BANKS

2.9 THREE WINDING TRANSFORMERS

2.10 PARALLEL OPERATION AND LOAD SHARING OF SINGLE PHASE AND THREE PHASE TRANSFORMERS

2.11 TAP CHANGING TRANSFORMERS

2.12 PER-UNIT (PU) SYSTEM

2.13 HEATING AND COOLING OF TRANSFORMERS

2.14 APPLICATIONS OF TRANSFORMERS

CHAPTER 3: ELECTROMECHANICAL ENERGY CONVERSION

3.1 ENERGY CONVERSION PROCESS

3.2 FIELD ENERGY

3.3 MECHANICAL FORCE IN THE ELECTROMAGNETIC SYSTEM

3.4 ROTATING MACHINES

3.5 CYLINDRICAL MACHINES

CHAPTER 4: MACHINE WINDINGS, MMF DISTRIBUTION, AND MAGNETIC FIELDS

4.1 WINDING ARRANGEMENT

4.2 PULSATING AND ROTATING MAGNETIC FIELDS

4.3 SPACE HARMONICS

4.4 TIME HARMONICS

CHAPTER 5: DC MACHINES

5.1 ELECTROMAGNETIC CONVERSION

5.2 DC MACHINES

5.3 DC GENERATORS

5.4 DC MOTORS

5.5 SPEED CONTROL

5.6 PERMANENT MAGNET DC (PMDC) MOTORS

5.7 BRAKING OF DC MOTORS

5.8 PRINTED CIRCUIT BOARD (PCB) MOTORS

CHAPTER 6: INDUCTION (ASYNCHRONOUS) MACHINES

6.1 CONSTRUCTIONAL FEATURES

6.2 INDUCED VOLTAGES

6.3 POLYPHASE INDUCTION MACHINE

6.4 THREE MODES OF OPERATION

6.5 INVERTED INDUCTION MACHINE

6.6 EQUIVALENT CIRCUIT MODEL

6.7 NO-LOAD TEST, BLOCKED-ROTOR TEST, AND EQUIVALENT CIRCUIT PARAMETERS

6.8 PERFORMANCE CHARACTERISTICS

[Separation of Iron Loss and Friction and Windage Loss of the Induction Motor]

6.9 POWER FLOW IN THREE MODES OF OPERATION

6.10 CIRCLE DIAGRAM FOR THE INDUCTION MACHINE

6.11 EFFECTS OF ROTOR RESISTANCE

6.12 CLASSES OF SQUIRREL-CAGE MOTORS

6.13 SPEED CONTROL

6.14 STARTING OF INDUCTION MOTORS

6.15 TIME AND SPACE HARMONICS

6.16 LINEAR INDUCTION MOTOR (LIM)

CHAPTER 7: SYNCHRONOUS MACHINES

7.1 CONSTRUCTION OF THREE-PHASE SYNCHRONOUS MACHINES

7.2 SYNCHRONOUS GENERATORS

7.3 SYNCHRONOUS MOTORS

7.4 EQUIVALENT CIRCUIT MODEL

7.5 POWER AND TORQUE CHARACTERISTICS

7.6 CAPABILITY CURVES

7.7 POWER FACTOR CONTROL

7.8 INDEPENDENT GENERATORS

7.9 PARALLEL OPERATION AND LOAD SHARING OF GENERATORS

7.10 SALIENT POLE SYNCHRONOUS MACHINES

7.11 SPEED CONTROL OF SYNCHRONOUS MOTORS

7.12 APPLICATIONS

CHAPTER 8: SINGLE-PHASE MOTORS

8.1 SINLE-PHASE INDUCTION MOTORS

8.2 STARTING WINDING DESIGN

8.3 EQUIVALENT CIRCUIT OF A CAPACITOR-RUN MOTOR

8.4 SINGLE-PHASE SERIES (UNIVERSAL) MOTORS

8.5 SINGLE-PHASE SYNCHRONOUS MOTORS

8.6 SPEED CONTROL

CHAPTER 9: SPECIAL MACHINES

9.1 SERVOMOTORS

9.2 LINEAR SYNCHRONOUS MOTOR (LSM)

9.3 BRUSHLESS DC (BLDC) MOTORS

9.4 SWITCHED RELUCTANCE MOTORS (SRM)

9.5 SYNCHROS

9.6 STEPPER MOTORS

APPENDIX A: BALANCED THREE-PHASE CIRCUITS

APPENDIX B: UNITS AND CONSTANTS

APPENDIX C: LAPLACE TRANSFORMS

APPENDIX D: ANSWERS TO SELECTED

PROBLEMS

INDEX