Electric Motors and Drives: Fundamentals, Types and Applications, Fifth Edition is intended primarily for non-specialist users or students of electric motors and drives, but many researchers and specialist industrialists have also acknowledged its value in providing a clear understanding of the fundamentals. It bridges the gap between specialist textbooks (too analytical for the average user) and handbooks (full of detail but with little insight) providing an understanding of how each motor and drive system works. The fifth edition has been completely revised, updated and expanded. All of the most important types of motor and drive are covered, including d.c., induction, synchronous (including synchronous reluctance and salient Permanent Magnet), switched reluctance, and stepping. There has been significant innovation in this area since the fourth edition, particularly in the automotive, aircraft and industrial sectors, with novel motor topologies emerging, including hybrid designs that combine permanent magnet and reluctance effects. We now include a physical basis for understanding and quantifying torque production in these machines, and this leads to simple pictures that illuminate the control conditions required to optimise torque. The key converter topologies have been brought together, and the treatment of inverter switching strategies expanded. A new chapter is devoted to the treatment of Field Oriented control, reflecting its increasing importance for all a.c. motor drives. A unique physically-based approach is adopted which builds naturally on the understanding of motor behaviour developed earlier in the book: the largely non-mathematical treatment dispels much of the mystique surrounding what is often regarded as a difficult topic.

Period action adventure set in the late 19th century, directed by Hugh Hudson ('Chariots of Fire'). Christopher Lambert stars as Tarzan of Greystoke, who as an infant was orphaned on the west coast of Africa following a shipwreck, and was rescued and brought up by a family of highly-evolved apes. Twenty years later, a Belgian hunter, Captaine Phillippe D'Arnot (Ian Holm), encounters the man who has now become Tarzan, Lord of the Apes when the ape-man rescues him from a terrible death. When the Captaine finds evidence to prove that Tarzan is the direct descendant of the Earl of Greystoke, he takes it upon himself to return the man to civilization. But Edwardian England is very different to the wilds of the African jungle, and Tarzan finds himself torn between two irreconcilable worlds...