Electric Machines: 1st Edition (Hardback) book cover

Electric Machines

1st Edition

By Charles A. Gross

CRC Press

466 pages | 146 B/W Illus.

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Hardback: 9780849385810
pub: 2006-10-20
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Description

The two major broad applications of electrical energy are information processing and energy processing. Hence, it is no wonder that electric machines have occupied a large and revered space in the field of electrical engineering. Such an important topic requires a careful approach, and Charles A. Gross' Electric Machines offers the most balanced, application-oriented, and modern perspective on electromagnetic machines available.

Written in a style that is both accessible and authoritative, this book explores all aspects of electromagnetic-mechanical (EM) machines. Rather than viewing the EM machine in isolation, the author treats the machine as part of an integrated system of source, controller, motor, and load. The discussion progresses systematically through basic machine physics and principles of operation to real-world applications and relevant control issues for each type of machine presented. Coverage ranges from DC, induction, and synchronous machines to specialized machines such as transformers, translational machines, and microelectromechanical systems (MEMS). Stimulating example applications include electric vehicles, wind energy, and vertical transportation. Numerous example problems illustrate and reinforce the concepts discussed.

Along with appendices filled with unit conversions and background material, Electric Machines is a succinct, in-depth, and complete guide to understanding electric machines for novel applications.

Reviews

"Excellent bibliography . . . Summing Up: Recommended."

– P. L. Enrici, University of Minnesota- Duluth, in Choice: Current Reviews for Academic Libraries, Jan 2008, Vol. 45, No. 5

Table of Contents

BASIC ELECTROMAGNETIC CONCEPTS

Basic Magnetic Concepts

Magnetically Linear Systems: Magnetic Circuits

Voltage, Current, and Magnetic Field Interactions

Magnetic Properties of Materials

Nonlinear Magnetic Circuit Analysis

Permanent Magnets

Superconducting Magnets

The Fundamental Translational EM Machine

The Fundamental Rotational EM Machine

Multiwinding EM Systems

Leakage Flux

The Concept of Ratings in EM Systems

Summary

Problems

TRANSFORMERS

The Ideal n-Winding Transformer

Transformer Ratings and Per-Unit Scaling

The Nonideal Three-Winding Transformer

The Nonideal Two-Winding Transformer

Transformer Efficiency and Voltage Regulation

Practical Considerations

The Autotransformer

Operation of Transformers in Three-Phase Environments

Sequence Circuit Models for Three-Phase Transformer Analysis

Harmonics in Transformers

Summary

Problems

BASIC MECHANICAL CONSIDERATIONS

Some General Perspectives

Efficiency

Load Torque-Speed Characteristics

Mass Polar Moment of Inertia

Gearing

Operating Modes

Translational Systems

A Comprehensive Example: The Elevator

Prime Movers

Summary

Problems

THE POLYPHASE INDUCTION MACHINE: BALANCED OPERATION

Machine Construction

Stator Winding Layout

The Rotating Magnetic Field

Stator-Rotor Interactions

Performance Analysis using the Equivalent Circuit

Equivalent Circuit Constants from Tests

Operating Modes: Motor, Generator, and Braking

Dynamic Performance

Cage Rotor Machines

Thermal Considerations

Summary

Problems

CONTROL OF AC MOTORS

Control of the Load Torque-Speed Characteristic

Control of the Motor Torque-speed Characteristic

Controlling Voltage and Frequency

Power Semiconductor Switching Components

The Single-Phase Inverter

The Three-Phase Inverter

AC to DC Conversion: Rectifiers

Three-Phase Rectifiers

Controlled Rectifiers

AC Motor Drives

AC Motor Drives: Dynamic Performance

Four-Quadrant Performance

The Cycloconverter

Summary

Problems

THE POLYPHASE INDUCTION MACHINE: UNBALANCED OPERATION

Unbalanced Operation

Single Phasing

Operation on Nonsinusoidal Voltage

The Two-Phase Induction Motor

The Single-Phase Induction Motor

The Single-Phase Induction Motor Operating on One Winding

Equivalent Circuit Constants from Tests

Dynamic Performance

Summary

Problems

THE POLYPHASE SYNCHRONOUS MACHINE: BALANCED OPERATION

Machine Construction

Evolution of the Machine Model from the Induction Machine

Interaction of the Rotor and Stator Circuits: The Magnetization Characteristic

The Nonsalient Pole Synchronous Machine: Generator Operation

The Nonsalient Pole Synchronous Machine: Motor Operation

The Salient Pole Synchronous Machine

Synchronous Machine Constants from Tests

The Synchronous Generator Operating in a Utility Environment

Permanent Magnetic Synchronous Machines

The Polyphase Synchronous-Reluctance Machine

The Brushless DC Motor

Summary

Problems

THE POLYPHASE SYNCHRONOUS MACHINE: THE GENERAL COUPLED CIRCUIT MODEL

The General Coupled Circuit Model of the Synchronous Machine

The 0dq Transformation

Powers and Torques in the 0dqFDQ Model

The 0dqFDQ Model Using Generator Sign Conventions

Balanced Three-Phase Constant Speed Generator Performance

Per-Unit Scaling as applied to Synchronous Machines

The Tee Equivalent Circuits

0dqFDQU Constants Derived from Manufacturer's Data

0dqFDQU Model Performance

Summary

Problems

THE DC MACHINE

Machine Construction

Generation of DC Voltage

The DC Machine Model: Generator Operation

The DC Machine Model: Motor Operation

Speed Control of DC Motors

DC Machine Constants from Tests

DC Motor Drives: Half-Wave Converters

DC Motor Drives: Full-Wave Converters

Four-Quadrant Performance

DC Motor Dynamic Performance

An Elevator Application

A More General DC Machine Model

Summary

Problems

TRANSLATIONAL ELECTROMECHANICAL MACHINES

Linear Induction Machine Construction

Linear Induction Machine Modeling: The Equivalent Circuit

The High-Speed Rail Application

Linear Synchronous Machine Construction

Linear Synchronous Machine Nonsalient Pole Model

Linear Electromechanical Machine Applications in Elevators

Summary

Problems

SPECIAL PURPOSE MACHINES AND SENSORS

The Universal Motor

The Shaded Pole Motor

The Hysteresis Motor

The Stepper Motor

Encoders

Resolvers

Microelectromechanical Systems

Summary

Problems

EPILOGUE

REFERENCES IN ELECTRIC MACHINES AND TRANSFORMERS

APPENDIX A: UNITS AND CONVERSION FACTORS

APPENDIX B: A REVIEW OF ELECTRICAL CIRCUIT CONCEPTS

DC Circuit Concepts

AC Circuit Concepts

Balanced Three-Phase AC Circuit Concepts

Symmetrical Components

APPENDIX C: HARMONIC CONCEPTS

Basic Concepts

Coefficient Calculations

Rms (Effective) Values

Symmetries

Spectral Plots

Response of Linear Circuits to Nonsinusoidal Excitation

INDEX

About the Series

Electric Power Engineering Series

Learn more…

Subject Categories

BISAC Subject Codes/Headings:
SCI024000
SCIENCE / Energy
TEC007000
TECHNOLOGY & ENGINEERING / Electrical
TEC008000
TECHNOLOGY & ENGINEERING / Electronics / General