Energy-Efficient Electric Motors, Third

This detailed reference provides guidelines for the selection and utilization of electric motors for improved reliability, performance, energy-efficiency, and life-cycle cost-reflecting the state-of-the-science in the field, as well as recent developments in control electronics, the economics of energy-efficient motors and systems, and advanced power electronic drivers.

Ali Emadi is director of the Grainger Power Electronics and Motor Drives Laboratories, Illinois Institute of Technology (IIT), Chicago.

Preface

v

Induction Motor Characteristics

1

(31)

Three-Phase Induction Motors

1

(16)

Single-Phase Induction Motors

17

(15)

Energy-Efficient Motors

32

(32)

Standard Motor Efficiency

32

(3)

Why More Efficient Motors?

35

(1)

What Is Efficiency?

35

(9)

What Is an Energy-Efficient Motor?

44

(4)

Efficiency Determination

48

(9)

Motor Efficiency Labeling

57

(2)

NEMA Energy-Efficient Motor Standards

59

(5)

Fundamentals of Electric Motor Drives

64

(26)

Power Electronic Devices

65

(2)

Electric Motor Drives

67

(1)

Single-Phase, Half-Wave, Controlled Rectifier

67

(3)

Single-Phase, Full-Wave, Controlled Rectifier

70

(3)

Phase-Controlled Induction Motor Drives

73

(6)

Control of DC Motors Using DC/DC Converters

79

(11)

Selected Readings

88

(2)

The Power Factor

90

(38)

What Is the Power Factor?

90

(1)

The Power Factor in Sinusoidal Systems

91

(2)

Why Raise the Power Factor?

93

(2)

How to Improve the Power Factor

95

(14)

The Power Factor with Nonlinear Loads

109

(5)

Harmonics and the Power Factor

114

(4)

Power Factor Motor Controllers

118

(10)

Applications of Induction Motors

128

(40)

General Discussion

128

(8)

Varying Duty Applications

136

(3)

Voltage Variation

139

(6)

Voltage Unbalance

145

(6)

Overmotoring

151

(2)

Polyphase Induction Motors Supplied by Adjustable-Frequency Power Supplies

153

(15)

Adjustable-Speed Drives and Their Applications

168

(20)

The Importance of Electric Motor Drives

170

(2)

Motor Drive Parameters

172

(2)

The Impact of Motor Efficiency

174

(3)

Current Motor Technology

177

(1)

Advantages of Variable-Speed Motors

178

(1)

Government Regulation

179

(6)

Adjustable-Speed Drive Applications

185

(3)

Selected Readings

187

(1)

Induction Motors and Adjustable-Speed Drive Systems

188

(82)

Energy Conservation

188

(3)

Adjustable-Speed Systems

191

(59)

Applications to Fans

250

(8)

Applications to Pumps

258

(9)

Applications to Constant-Torque Loads

267

(3)

Brushless DC Motor Drives

270

(22)

BLDC Machine Configurations

272

(5)

Modeling

277

(4)

BLDC Power Electronic Drivers

281

(3)

Sensorless Techniques for BLDC Motor Drives

284

(8)

Selected Readings

288

(4)

Switched Reluctance Motor Drives

292

(66)

History of Switched Reluctance Machine

295

(2)

Fundamentals of Operation

297

(5)

Machine Configurations

302

(5)

Dynamic Modeling of SRMs

307

(9)

Control of SRMs

316

(9)

Other Power Electronic Drivers

325

(14)

Advantages and Disadvantages

339

(9)

Generative Mode of Operation

348

(4)

Energy Conversion Cycle

352

(6)

Selected Readings

354

(4)

Utility Interface Issues

358

(27)

ASD Example

363

(4)

Power Factor Correction Methods

367

(8)

Active Power Filters

375

(10)

Selected Readings

381

(4)

Index

385

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Energy-Efficient Electric Motors, Third Edition, Revised and Expanded

Summary

Author Biography

Table of Contents

Supplemental Materials