Table of Contents

Cover image

Title page

Copyright

Preface

Chapter 1: Electric motors—The basics

Abstract

1.1 Introduction

1.2 Producing rotation

1.3 Magnetic circuits

1.4 Torque production

1.5 Torque and motor volume

1.6 Energy conversion—Motional e.m.f

1.7 Equivalent circuit

1.8 Constant voltage operation

1.9 General properties of electric motors

1.10 Review questions

Chapter 2: Power electronic converters for motor drives

Abstract

2.1 Introduction

2.2 Voltage control—D.C. output from d.c. supply

2.3 D.C. from a.c.—Controlled rectification

2.4 A.C. from d.c.—Inversion

2.5 A.C. from a.c.

2.6 Inverter switching devices

2.7 Converter waveforms, acoustic noise, and cooling

2.8 Review questions

Chapter 3: D.C. motors

Abstract

3.1 Introduction

3.2 Torque production

3.3 Motional e.m.f.

3.4 D.C. motor—steady-state characteristics

3.5 Transient behaviour

3.6 Four quadrant operation and regenerative braking

3.7 Shunt and series motors

3.8 Self-excited d.c. machine

3.9 Toy motors

3.10 Review questions

Chapter 4: D.C. motor drives

Abstract

4.1 Introduction

4.2 Thyristor d.c. drives—general

4.3 Control arrangements for d.c. drives

4.4 Chopper-fed d.c. motor drives

4.5 D.C. servo drives

4.6 Digitally-controlled drives

4.7 Review questions

Chapter 5: Induction motors—Rotating field, slip and torque

Abstract

5.1 Introduction

5.2 The rotating magnetic field

5.3 Torque production

5.4 Influence of rotor current on flux

5.5 Stator current-speed characteristics

5.6 Review questions

Chapter 6: Induction motor—Operation from 50/60 Hz supply

Abstract

6.1 Introduction

6.2 Methods of starting cage motors

6.3 Run-up and stable operating regions

6.4 Torque-speed curves—Influence of rotor parameters

6.5 Influence of supply voltage on torque-speed curve

6.6 Generating

6.7 Braking

6.8 Speed control (without varying the stator supply frequency)

6.9 Power-factor control and energy optimisation

6.10 Single-phase induction motors

6.11 Power range

6.12 Review questions

Chapter 7: Variable frequency operation of induction motors

Abstract

7.1 Introduction

7.2 Variable frequency operation

7.3 Practical aspects of inverter-fed drives

7.4 Effect of inverter on the induction motor

7.5 Utility supply effects

7.6 Inverter and motor protection

7.7 Review questions

Chapter 8: Field oriented control of induction motors

Abstract

8.1 Introduction

8.2 Essential preliminaries

8.3 Circuit modelling of the induction motor

8.4 Steady-state torque under current-fed conditions

8.5 Dynamic torque control

8.6 Implementation of field-oriented control

8.7 Direct torque control

8.8 Review questions

Chapter 9: Synchronous, permanent magnet and reluctance motors and drives

Abstract

9.1 Introduction

9.2 Synchronous motor types

9.3 Torque production

9.4 Utility-fed synchronous motors

9.5 Variable frequency operation of synchronous motors

9.6 Synchronous motor drives

9.7 Performance of permanent magnet motors

9.8 Emerging developments in permanent magnet motors

9.9 Review questions

Chapter 10: Stepping and switched reluctance motors

Abstract

10.1 Introduction

10.2 Stepping motors

10.3 Principle of motor operation

10.4 Motor characteristics

10.5 Steady-state characteristics—Ideal (constant-current) drive

10.6 Drive circuits and pull-out torque–speed curves

10.7 Transient performance

10.8 Switched reluctance motor drives

10.9 Review questions

Chapter 11: Motor/drive selection

Abstract

11.1 Introduction

11.2 Power ratings and capabilities

11.3 Drive characteristics

11.4 Load requirements—torque-speed characteristics

11.5 General application considerations

11.6 Review questions

Appendix: Solutions to review questions

Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter 10

Chapter 11

Further reading

A General motors and drives books – Delving a little deeper

B Control and modelling

C Practical aspects of design and application of motors and drives

D Reliability

E Synchronous reluctance and permanent magnet motors

F Energy efficient electric motors

G Power semiconductor devices

Index

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