Electric Motors and Drives – Austin Hughes – 3rd Edition


Motors and is intended for non-specialist users of , filling the gap between theory-based academic textbooks and the more prosaic ‘handbooks’, which provide useful detail but little opportunity for the of real insight and understanding.

The book explores all of the widely-used modern types of motor and drive, conventional and brushless D.C., induction motors and servo drives, providing readers with the to select the right technology for a given job. Austin Hughes’ approach, using a minimum of maths, has established and Drives as a leading guide for , and the key to a complex subject for a wider readership, including technicians, managers and .

* Acquire essential practical knowledge of motors and drives, with a minimum of math and theory
* Updated material on the latest and most widely-used modern motors and drives
* New edition includes additional diagrams and worked examples throughout

Table of Content

Chapter One. Electric Motors – The Basics
1. Introduction
2. Producing Rotation
3. Magnetic Circuits
4. Torque Production
5. Torque and Motor Volume
6. Energy Conversion – Motional E.M.F.
7. Equivalent Circuit
8. Constant Voltage Operation
9. General Properties of Electric Motors

Chapter Two. Introduction to Power Electronic Converters for Motor Drives
1. Introduction
2. Voltage Control – D.C. Output from D.C. Supply
3. D.C. from A.C. – Controlled Rectification
4. A.C. from D.C. – Inversion
5. A.C. from A.C.
6. Inverter Switching Devices
7. Converter Waveforms, Acoustic Noise, and Cooling

Chapter Three. Conventional D.C. Motors
1. Introduction
2. Torque Production
3. Motional E.M.F.
4. D.C. Motor – Steady-State Characteristics
5. Transient Behavior – Current Surges
6. Four Quadrant Operation and Regenerative Braking
7. Shunt and Series Motors
8. Self-Excited D.C. Machine
9. Toy Motors

Chapter Four. D.C. Motor Drives
1. Introduction
2. Thyristor D.C. Drives – General
3. Control Arrangements for D.C. Drives
4. Chopper-Fed D.C. Motor Drives
5. D.C. Servo Drives
6. Digitally Controlled Drives

Chapter Five. Induction Motors – Rotating Field, Slip and Torque
1. Introduction
2. The Rotating Magnetic Field
3. Torque Production
4. Influence of Rotor Current on Flux
5. Stator Current–Speed Characteristics

Chapter Six. Induction Motors – Operation from 50/60Hz Supply
1. Introduction
2. Methods of Starting Cage Motors
3. Run-Up and Stable Operating Regions
4. Torque–Speed Curves – Influence of Rotor Parameters
5. Influence of Supply Voltage on Torque–Speed Curve
6. Generating
7. Braking
8. Speed Control
9. Power-Factor Control and Energy Optimization
10. Single-Phase Induction Motors
11. Power Range

Chapter Seven. Variable Frequency Operation of Induction Motors
1. Introduction
2. Inverter-Fed Induction Motor Drives
3. Torque–Speed Characteristics
4. Introduction to Field-Oriented Control
5. Steady-State Torque Under Current-Fed Conditions
6. Torque vs Slip Frequency – Constant Rotor Flux Linkage
7. Dynamic Torque Control
8. Implementation of Field-Oriented Control
9. Direct Torque Control

Chapter Eight. Inverter-fed Induction Motor Drives
1. Introduction
2. Pulse-Width Modulated (PWM) Voltage Source Inverter (VSI)
3. Performance of Inverter-Fed Induction Motor Drives
4. Effect of Inverter Waveform and Variable Speed on the Induction Motor
5. Effect of the Inverter-Fed Induction Motor on the Utility Supply
6. Inverter and Motor Protection
7. Alternative Converter Topologies

Chapter Nine. Synchronous and Brushless Permanent Magnet Machines and Drives
1. Introduction
2. Synchronous Motors
3. Equivalent Circuits of Synchronous Motors
4. Operation From Constant-Voltage, Constant-Frequency (Utility) Supply
5. Variable-Frequency Operation
6. Synchronous Motor Drives
7. Performance of Brushless Motors
8. Reluctance and Hysteresis Motors

Chapter Ten. Stepping and Switched-reluctance Motors
1. Introduction
2. Stepping Motors
3. Principle of Motor Operation
4. Motor Characteristics
5. Steady-State Characteristics – Ideal (Constant-Current) Drive
6. Drive Circuits and Pull-Out Torque–Speed Curves
7. Transient Performance
8. Switched-Reluctance Motor Drives

Chapter Eleven. Motor/Drive Selection
1. Introduction
2. Power Ratings and Capabilities
3. Drive Characteristics
4. Load Requirements – Torque–Speed Characteristics
5. General Application Considerations

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