Schaum's Outline of Electric Machines & Electromechanics

by Nasar, Syed

• ISBN13: 9780070459946
• ISBN10: 0070459940
• Edition: 2nd
• Format: Paperback
• Copyright: 1997-07-22
• Publisher: McGraw-Hill Education

Summary

More than 50,000 copies of this powerful study guide sold in the first edition! Covering a broad range of topics, from simple DC magnetic circuits to electronic control of DC and AC motors, all the concepts and their applications are clearly explained and illustrated. Includes hundreds of problems with detailed solutions to help students learn quickly and reaise test scores without investing unnecessary time. Ideal for undergraduate students of electrical engineering, for solo study, and as a refresher.

Table of Contents

Chapter 1 MAGNETIC CIRCUITS	1	(23)
1.1 Introduction and Basic Concepts	1	(1)
1.2 Permeability and Saturation	2	(1)
1.3 Laws Governing Magnetic Circuits	3	(1)
1.4 AC Operation and Losses	4	(1)
1.5 Stacking Factor	5	(1)
1.6 Fringing	5	(1)
1.7 Energy Stored in a Magnetic Field	5	(1)
1.8 Inductance Calculations	6	(1)
1.9 Magnetic Circuits with Permanent Magnets	7	(17)
Chapter 2 POWER TRANSFORMERS	24	(23)
2.1 Transformer Operation and Faraday's Law	24	(1)
2.2 EMF Equation of a Transformer	25	(1)
2.3 Transformer Losses	25	(1)
2.4 Equivalent Circuits of Nonideal Transformers	25	(2)
2.5 Tests on Transformers	27	(2)
2.6 Transformer Connections	29	(1)
2.7 Autotransformers	30	(1)
2.8 Instrument Transformers	31	(16)
Chapter 3 ELECTROMECHANICAL SYSTEMS	47	(24)
3.1 Electromechanical Energy Conversion	47	(2)
3.2 Force and Torque Equations	49	(1)
3.3 Electromechanical Dynamics	50	(2)
3.4 Electromechanical Analogies	52	(19)
Chapter 4 DC MACHINES	71	(27)
4.1 Operating Principles	71	(1)
4.2 Commutator Action	72	(1)
4.3 Armature Windings and Physical Features	73	(1)
4.4 EMF Equation	74	(1)
4.5 Torque Equation	74	(1)
4.6 Speed Equation	75	(1)
4.7 Machine Classification	75	(1)
4.8 Airgap Fields and Armature Reaction	76	(2)
4.9 Reactance Voltage and Commutation	78	(1)
4.10 Effect of Saturation on Voltage Buildup in a Shunt Generator	79	(1)
4.11 Losses and Efficiency	80	(1)
4.12 Motor and Generator Characteristics	81	(1)
4.13 DC Motor Dynamics	81	(17)
Chapter 5 POLYPHASE INDUCTION MOTORS	98	(25)
5.1 General Remarks	98	(1)
5.2 MMFs of Armature Windings	98	(2)
5.3 Production of Rotating Magnetic Fields	100	(1)
5.4 Slip: Machine Equivalent Circuits	101	(2)
5.5 Calculations from Equivalent Circuits	103	(1)
5.6 Energy-Efficient Induction Motors	104	(1)
5.7 Approximate Equivalent Circuit Parameters from Test Data	105	(18)
Chapter 6 SYNCHRONOUS MACHINES	123	(30)
6.1 Types and Constructional Features	123	(1)
6.2 Generator and Motor Operation; The EMF Equation	123	(2)
6.3 Generator No-Load, Short-Circuit, and Voltage-Regulation Characteristics	125	(1)
6.4 Power-Angle Characteristic of a Round-Rotor Machine	126	(1)
6.5 Performance of the Round-Rotor Motor	127	(1)
6.6 Salient-Pole Synchronous Machines	128	(2)
6.7 Transients in Synchronous Machines	130	(23)
Chapter 7 SINGLE-PHASE MOTORS AND PERMANENT MAGNET MACHINES	153	(21)
7.1 Small AC Motors	153	(1)
7.2 Analysis of Single-Phase Induction Motors	153	(1)
7.3 Starting of Single-Phase Induction Motors	153	(3)
7.4 Permanent Magnet Machines	156	(6)
7.5 Hysteresis Motors	162	(12)
Chapter 8 ELECTRONIC CONTROL OF MOTORS	174	(35)
8.1 General Considerations	174	(1)
8.2 Power Solid-State Devices	175	(4)
8.3 RMS and Average Values of Waveforms	179	(1)
8.4 Control of DC Motors	180	(5)
8.5 Control of AC Motors	185	(4)
8.6 SCR Commutation	189	(20)
Appendix A Units Conversion	209	(1)
Appendix B Characteristics of Single-Film-Coated, Rounded, Magnet Wire	210	(1)
Appendix C Characteristics of Magnetic Materials and Permanent Magnets	211	(4)
INDEX	215