Electric Machines and Drives [Hardcover]

Mohan's Electric Machines and Drives is part of a three-book series designed for the power sequence electives on Electrical Engineering. The book focuses on power topics including advances in hybrid-electric cars and alternative energy systems, coupled with severe environmental problems associated with hydrocarbon-based fuels. The text builds off Mohan's successful MNPERE titles and adopts a systems approach.

PREFACE xi

CHAPTER 1 INTRODUCTION TO ELECTRIC DRIVE SYSTEMS 1

1.1 History 1

1.2 What Is an Electric-Motor Drive? 2

1.3 Factors Responsible for the Growth of Electric Drives 3

1.4 Typical Applications of Electric Drives 3

1.5 The Multi-Disciplinary Nature of Drive Systems 8

1.6 Structure of the Textbook 9

References 10

Problems 11

CHAPTER 2 UNDERSTANDING MECHANICAL SYSTEM REQUIREMENTS FOR ELECTRIC DRIVES 12

2.1 Introduction 12

2.2 Systems with Linear Motion 12

2.3 Rotating Systems 14

2.4 Friction 20

2.5 Torsional Resonances 21

2.6 Electrical Analogy 22

2.7 Coupling Mechanisms 23

2.8 Types of Loads 26

2.9 Four-Quadrant Operation 27

2.10 Steady State and Dynamic Operations 27

References 28

Problems 28

CHAPTER 3 REVIEW OF BASIC ELECTRIC CIRCUITS 31

3.1 Introduction 31

3.2 Phasor Representation in Sinusoidal Steady State 31

3.3 Three-Phase Circuits 38

Reference 43

Problems 43

CHAPTER 4 BASIC UNDERSTANDING OF SWITCH-MODE POWER ELECTRONIC CONVERTERlc+