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A permanent magnet assisted switched reluctance machine for more electric aircraft

Lookup NU author(s): Sana Ullah, Dr Stephen McDonald, Dr Richard Martin, Glynn Atkinson


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© 2016 IEEE.Actuators for more electric aircraft are predominantly based on permanent magnet machines for the best power to weight ratio. However, permanent magnet machines can give rise to drag torque under short circuit conditions. This paper explains the concept of permanent magnet assistance in switched reluctance machines and sets out a topology which maximizes the benefits of permanent magnet assistance without compromising fault tolerance. The problem of demagnetization in this topology is explored and a revised design proposed. The increased torque from permanent magnet assistance is demonstrated, and laboratory tests on a prototype machine evidence the fault tolerant nature of the proposed machine by comparison with a baseline permanent magnet machine design. It is suggested that the permanent magnet assisted segmental rotor switched reluctance machine could achieve similar torque to a permanent magnet machine in this application with much improved fault tolerance and with much reduced magnet mass.

Publication metadata

Author(s): Ullah S, McDonald SP, Martin R, Atkinson GJ

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2016 22nd International Conference on Electrical Machines, ICEM 2016

Year of Conference: 2016

Pages: 79-85

Online publication date: 03/11/2016

Acceptance date: 02/04/2016

Publisher: Institute of Electrical and Electronics Engineers Inc.


DOI: 10.1109/ICELMACH.2016.7732509

Library holdings: Search Newcastle University Library for this item

ISBN: 9781509025381