A comparative study on nine- and twelve-phase flux-switching permanent-magnet wind power generators

Abstract

In this paper, two flux-switching permanent-magnet (FSPM) wind power generators with 9- and 12-phase windings are designed and comparatively analyzed. Both two generators are designed under the rated specifications of 10 kW output power and 220 V phase voltage at 500 rpm. The static characteristics and power generating performances including output voltage, power and efficiency at rated and variable load/speed conditions are predicted by finite-element (FE) analysis and validated by experimental tests based on the two FSPM prototypes. It shows that the 12-phase 24-stator-slot/22-rotor-pole FSPM generator exhibits a higher air-gap flux density, a higher torque/power density and a lower voltage regulation factor. Besides, it has a better overload capability than its 9-phase 36-stator-slot/34-rotor-pole counterpart when the load and wind speed exceed the rated levels. The comparative study reveals the benefits of the lower leakage flux and permeance from the larger stator-slot opening and longer magnetic circuit.

Metadata

Item Type:	Article
Authors/Creators:	Shao, L. Hua, W. Li, F. Soulard, J. Zhu, Z.Q. https://orcid.org/0000-0001-7175-3307 Wu, Z. Cheng, M.
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:	9 phase; 12 phase; flux-switching; permanent magnet; switched flux; wind power
Dates:	Published: July 2019 Published (online): 11 April 2019 Accepted: 27 March 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:	31 May 2019 13:56
Last Modified:	03 Dec 2021 14:15
Status:	Published
Publisher:	Institute of Electrical and Electronics Engineers
Refereed:	Yes
Identification Number:	10.1109/tia.2019.2910482
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:146754

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A comparative study on nine- and twelve-phase flux-switching permanent-magnet wind power generators

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