Practical Electric Motor Handbook

by Gottlieb

• ISBN13: 9780750636384
• ISBN10: 0750636386
• Format: Paperback
• Copyright: 1997-09-24
• Publisher: Elsevier Science

Summary

Experienced product designers are increasingly expected to be adept at incorporating a range of components into their designs. Students and experimenters too need to look beyond basic circuits and devices to achieve adequate design solutions. For those experienced in engineering design, this is the guide to electric motors. this book will allow engineers and designers to marry the technologies they know about with motor technology, and hence to incorporate motors into their products. Of the many good books on motors, such as Electric Motors and Drives by Hughes, none offer the engineering professional a tailored guide to motors taking into account their expertise. This book fills that gap. Irving Gottlieb is a leading author of many books for practising engineers, technicians and students of electronic and electrical engineering.

Table of Contents

Preface	ix
Electric motor generalities	1	(31)
Early discoveries	2	(1)
The quest for continuous rotary motion	3	(2)
Basic motor action	5	(2)
The electric motor as an energy converter	7	(1)
Motor graphs	8	(1)
Motor nomenclature	9	(2)
Horsepower rating of electric motors	11	(1)
Motor classification	12	(1)
Describing performance of electric motors	13	(1)
Illustrations pertaining to motors	13	(2)
Measuring speed	15	(2)
Applying `hand-rules' to motors	17	(1)
Force, current and flux - the orthogonal relationship	18	(2)
Counter-e.m.f.	20	(2)
Electric motors in the quest for perpetual motion	22	(1)
Idealized concept of energy conversion	23	(3)
Measurement pitfalls	26	(1)
The electric vehicle	26	(5)
Things to keep in mind about motors	31	(1)
Practical aspects of DC motors	32	(30)
Background of DC motors	32	(1)
The homopolar motor	33	(1)
The AC involvement in DC motors	34	(2)
A practical view of armature reaction	36	(2)
The role of residual magnetism	38	(1)
The DC shunt motor	39	(3)
The DC permanent magnet motor	42	(2)
Paradoxes in DC motor theory	44	(3)
Operation of the DC servo motor	47	(2)
The motor characteristic of the DC watthour meter	49	(2)
The DC series motor	51	(2)
The DC compound motor	53	(1)
Motor and generator performance in the same machine	54	(2)
Reversing the rotation of DC motors	56	(1)
Practical use of counter-e.m.f.	57	(2)
Flexible control of permanent magnet motors	59	(1)
The grey area of DC and AC motors	60	(2)
Practical aspects of AC motors	62	(37)
The great induction motor dilemma	63	(1)
Practical aspects of the single-phase induction motor	63	(2)
Split-phase starting techniques for induction motors	65	(1)
Types of single-phase AC motors	66	(2)
The synchronous motor	68	(4)
Shaded-pole motors	72	(1)
The hysteresis motor	73	(2)
The reluctance motor	75	(1)
The wound-rotor induction motor	76	(4)
The double squirrel-cage induction motor	80	(2)
Speed control of AC motors	82	(1)
The consequent-pole AC motor	82	(2)
Speed selection by pole modification	84	(3)
The universal motor	87	(1)
Rotation reversal in AC motors	88	(3)
Non-sinusoidal waveforms applied to AC motors	91	(3)
Power input and power factor in three-phase induction motors	94	(2)
Unusual motor behaviour	96	(3)
Practical projects	99	(39)
Experimental aspects of electric motors	99	(1)
Considerations in starting electric motors	99	(2)
High starting-torque from a small capacitor	101	(2)
Gentle start-up of AC motors	103	(1)
An easy starting technique for three-phase induction motors	104	(1)
Altering the characteristics of the series motor	105	(2)
Phase transformation for motor testing	107	(1)
Digitally-generated polyphase waveforms	108	(1)
Synchro-system experiments	109	(3)
Operating AC motors from 50 Hz or 60 Hz lines	112	(1)
Changing the function of a dynamo	113	(2)
Dynamic braking of permanent magnet motors	115	(1)
Dynamic braking of induction motors	115	(3)
Speed control of fan motors	118	(1)
Speed control with and without speed-regulation	118	(2)
Practical aspects of the brushless DC motor	120	(2)
Improving performance of stepping motors	122	(1)
Custom-designing of stepping motor	122	(2)
Electronic technique for eliminating the centrifugal switch	124	(1)
Some motor drive techniques	124	(4)
IC control system for permanent magnet DC motors	128	(2)
IC control system for brushless DC motor	130	(2)
IC energy-saving system for induction motors	132	(1)
DC permanent magnet motor for electric vehicles	133	(2)
Switched reluctance motor	135	(1)
Reliability	136	(2)
Practical problems	138	(25)
Dealing with motor mathematics	138	(1)
Feeder line as part of the motor circuit	138	(1)
Internal power in a permanent magnet DC motor	139	(1)
Stray power in a permanent magnet DC motor	140	(1)
Power determinations from prony-brake measurements	141	(1)
Compound motor speed calculations	142	(2)
Speed regulation of DC and AC motors	144	(1)
Torque calculation of DC series motor	145	(1)
Efficiency of DC shunt motor	145	(1)
Starting resistance for permanent magnet DC motor	146	(1)
Power requirement from electric vehicle motor	147	(1)
Speed vs. load for DC shunt motor	148	(1)
Speed vs. load for DC series motor	149	(1)
Synchronous speed calculations	150	(1)
Light-load behaviour of induction motor	151	(1)
Using wattmeter data for evaluating induction motor performance	152	(1)
Speed of wound-rotor induction motor vs. rotor resistance	153	(1)
Using 50 Hz motors on 60 Hz lines and vice-versa	154	(1)
Interpreting data for polyphase motors	154	(1)
Capacitor calculation for unity power factor	155	(1)
Synchronous motor calculations for power factor correction	156	(1)
Transformer simulation of induction motor	157	(1)
Two-wattmeter data for induction motor calculations	158	(1)
Calculations for induction-generator action from a motor	159	(4)
Index	163