High-performance ferrite permanent magnet brushless machines

Abstract

The performance of a brushless permanent magnet machine topology equipped with axially and circumferentially magnetized ferrite permanent magnets is presented. Simulation studies show that for smaller ratios of axial length to active length, air-gap flux densities in excess of 1 T can be achieved, resulting in significant improvements in torque production and efficiency. A prototype machine is manufactured, and test results confirm the predictions of the EMF and the static torque.

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Item Type:	Article
Authors/Creators:	Shanshal, A. Hoang, K. https://orcid.org/0000-0001-7463-9681 Atallah, K. https://orcid.org/0000-0002-8008-8457
Copyright, Publisher and Additional Information:	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy.
Keywords:	Brushless machines; permanent magnets
Dates:	Published: July 2019 Published (online): 28 March 2019 Accepted: 7 February 2019
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	07 Nov 2019 16:25
Last Modified:	28 Mar 2020 01:39
Status:	Published
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
Refereed:	Yes
Identification Number:	10.1109/tmag.2019.2900561
Related URLs:	Author
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:153182

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High-performance ferrite permanent magnet brushless machines

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