The first two chapters therefore provide a gentle introduction to electromagnetic energy conversion and power electronics. Many of the basic ideas introduced here crop up frequently throughout the book and indeed are deliberately repeated to emphasize their importance , so unless the reader is already well versed in the fundamentals it would be wise to absorb the first two chapters before tackling the later material.
At various points later in the book we include more tutorial material, e.
Electric Motors and Drives (4th ed.)
A grasp of basic closed-loop principles is also required in order to understand the operation of the various drives, so further introductory material is included in Appendix 1. The book covers all of the most important types of motor and drive, including conventional and brushless d. The induction motor and induction motor drives are given most weight, reflecting their dominant market position in terms of numbers.
Conventional d. Similarly, d. The third edition has been completely revised and updated.
Electric Motors and Drives - Fundamentals, Types and Applications (3rd Edition) - Knovel
Major additions include an extensive but largely non-mathematical treatment of both fieldoriented and direct torque control in both induction and synchronous motor drives; a new chapter on permanent magnet brushless machines; new material dealing with self-excited machines, including wind-power generation; and increased emphasis throughout on the inherent ability of electrical machines to act either as a motor or a generator. Younger readers may be unaware of the radical changes that have taken place over the past 50 years, so a couple of paragraphs are appropriate to put the current scene into perspective.
For more than a century, many different types of motor were developed, and each became closely associated with a particular application. Traction, for example, was seen as the exclusive preserve of the series d. The cage induction motor was and still is the most numerous type but was judged as being suited only to applications which called for constant speed. All sorts of ingenious arrangements and interconnections of motor windings were invented, but even the best motors had a limited operating range, and they all required bulky electromechanical control gear.
كتاب Electric Motors and Drives Fundamentals, Types and Applications Third edition
All this changed from the early s, when power electronics began to make an impact. The first major breakthrough came with the thyristor, which provided a relatively cheap, compact, and easily controlled variablespeed drive using the d. In the s the second major breakthrough resulted from the development of power electronic inverters, providing a 3phase variable-frequency supply for the cage induction motor and thereby enabling its speed to be controlled.
Austin Hughes. Electric Motors and Drives is intended for non-specialist users of electric motors and drives, filling the gap between theory-based academic textbooks and the more prosaic 'handbooks', which provide useful detail but little opportunity for the development of real insight and understanding.
The book explores all of the widely-used modern types of motor and drive, including conventional and brushless D. Austin Hughes' approach, using a minimum of maths, has established Electric Motors and Drives as a leading guide for engineers, and the key to a complex subject for a wider readership, including technicians, managers and students.
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Acquire essential practical knowledge of motors and drives, with a minimum of math and theory Updated material on the latest and most widely-used modern motors and drives New edition includes additional diagrams and worked examples throughout.