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Permanent-magnet machines with powdered iron cores and prepressed windings

Lookup NU author(s): Professor Alan Jack, Professor Barrie Mecrow, Phillip Dickinson, Dawn Stephenson

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Abstract

This paper presents a permanent-magnet servo motor, built with a powdered iron stator, which has been designed to take full advantage of the properties of the material. There are a number of important design features which are not possible with laminated cores. For example, the core back is axially extended over the end windings, the armature core components are subdivided and preformed stator coils are used. The coils are prepressed to form a solid component with an exceptionally high fill factor (78%). The prototype offers far superior performance to a conventionally laminated commercial machine, manufactured in the same frame.

Publication metadata

Author(s): Mecrow BC; Stephenson D; Dickinson PG; Jack AG; Burdess JS; Fawcett N; Evans JT

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Industry Applications

Year: 2000

Volume: 36

Issue: 4

Pages: 1077-1084

ISSN (print): 0093-9994

ISSN (electronic): 1939-9367

Publisher: Institution of Electronic and Electrical Engineers

URL: http://dx.doi.org/10.1109/28.855963

DOI: 10.1109/28.855963

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