Electric Motors and Drives (eBook)

Fundamentals, types and applications

Austin Hughes (Autor)

eBook Download: PDF

2013 | 1. Auflage
316 Seiten
Elsevier Science (Verlag)
978-1-4831-0527-7 (ISBN)

Infos

Electric Motors and Drives: Fundamentals, Types and Applications provides information regarding the inner workings of motor and drive system. The book is comprised of nine chapters that cover several aspects and types of motor and drive systems. Chapter 1 discusses electric motors, and Chapter 2 deals with power electronic converters for motor drives. Chapter 3 covers the conventional d.c. motors, while Chapter 4 tackles inductions motors - rotating field, slip, and torque. The book also talks about the operating characteristics of induction motors, and then deals with the inverter-fed induction motor drives. The stepping motor systems; the synchronous, switched reluctance, and brushless d.c. drives; and the motor/drive selection are also covered. The text will be of great use to individuals who wish to familiarize themselves with motor and drive systems.

Austin Hughes was a long-time member of the innovative motors and drives research team at the University of Leeds, UK, and has established a reputation for an informal style that opens up complex subjects to a wide readership, including students and managers as well as technicians and engineers.

Inhalt

Front Cover 1
Electric Motors and Drives: Fundamentals, Types and Applications 4
Copyright Page 5
Table of Contents 6
Preface 14
CHAPTER 1. ELECTRIC MOTORS 18
Introduction 18
Producing Rotation 19
Magnetic Circuits 23
Torque Production 32
Specific Loadings and Specific Output 34
Motional EMF 38
General Properties of Electric Motors 50
CHAPTER 2. POWER ELECTRONIC CONVERTERS FOR MOTOR DRIVES 55
Introduction 55
Voltage Control - D. C. Output from D.C. Supply 57
D.C. from A.C. - Controlled Rectification 65
A.C. from D.C. - Inversion 75
Converter Waveforms and Acoustic Noise 82
Cooling of Power Switching Devices 83
CHAPTER 3. CONVENTIONAL D.C. MOTORS 89
Introduction 89
Torque Production 91
D. C Motor - Steady-state Characteristics 102
Transient Behaviour - Current Surges 110
Shunt, Series and Compound Motors 112
Four Quadrant Operation and Regenerative Braking 122
CHAPTER 4. D.C. MOTOR DRIVES 127
Introduction 127
Thyristor D. C Drives 127
Control Arrangements for D.C Drives 140
Chopper-fed D. C. Motor Drives 146
Developments in Industrial D. C Drives 149
D.C Servo Drives 149
CHAPTER 5. INDUCTION MOTORS-ROTATING FIELD, SLIP AND TORQUE 157
Introduction 157
The Rotating Magnetic Field 159
Torque Production 174
Influence of Rotor Current on Flux 184
Stator Current-speed Characteristics 186
CHAPTER 6. OPERATING CHARACTERISTICS OF INDUCTION MOTORS 189
Methods of Starting Cage Motors 189
Run-up and Stable Operating Regions 196
Torque-speed Curves - Influence of Rotor Parameters 200
Influence of Supply Voltage on Torque-speed Curve 208
Generating and Braking 209
Speed Control 214
Power-factor Control and Energy Optimization 218
Single-phase Induction Motors 221
CHAPTER 7. INVERTER-FED INDUCTION MOTOR DRIVES 228
Introduction 228
Torque-speed Characteristics - Constant V/f Operation 234
Control Arrangements for Inverter-fed Drives 241
CHAPTER 8. STEPPING MOTOR SYSTEMS 246
Introduction 246
Principle of Motor Operation 253
Motor Characteristics 258
Drive Circuits and Steady-state Characteristics 266
Transient Performance 277
CHAPTER 9. SYNCHRONOUS, SWITCHED RELUCTANCE AND BRUSHLESS D.C. DRIVES 281
Introduction 281
Synchronous Motors 281
Controlled-speed Synchronous Motor Drives 289
Switched Reluctance Motor Drives 295
Brushless D.C. Motors 298
CHAPTER 10. MOTOR/DRIVE SELECTION 300
Introduction 300
Power Range for Motors and Drives 301
Load Requirements - Torque-speed Characteristics 303
General Application Considerations 309
Further Reading 313
Index 315

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Technik ► Bauwesen
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 1-4831-0527-X / 148310527X
• ISBN-13: 978-1-4831-0527-7 / 9781483105277