Electric Motors and Drives
Fundamentals, Types and Applications
Third edition
Austin Hughes
Senior Fellow, School of Electronic and Electrical Engineering,
University of Leeds

The aim throughout is to provide the reader with an understanding of how each motor and drive system works, in the belief that it is only by knowing what should happen that informed judgements and sound
comparisons can be made. Given that the book is aimed at readers from a range of disciplines, introductory material on motors and power electronics is clearly necessary, and this is presented in the first two chapters. Many of these basic ideas crop up frequently throughout the book, so unless the reader is well-versed in the fundamentals it would be wise to absorb the first two chapters before tackling the later material. In addition, an awareness of the basic ideas underlying feedback and closed-loop control is necessary in order to follow the sections dealing with drives, and this has now been provided as an
Appendix. 
The book explores most of the widely used modern types of motors and drives, including conventional and brushless d.c., induction motors (mains and inverter-fed), stepping motors, synchronous motors (mains
and converter-fed) and reluctance motors. The d.c. motor drive and the induction motor drive are given most importance, reflecting their dominant position in terms of numbers. Understanding the d.c. drive is
particularly important because it is still widely used as a frame of reference for other drives: those who develop a good grasp of the d.c. drive will find their know-how invaluable in dealing with all other types,
particularly if they can establish a firm grip on the philosophy of the control scheme.