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Composite sheath of high-speed permanent magnet generator with rotor strength constraint

Lookup NU author(s): Dr Yaodong WangORCiD

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by IOS Press, 2019.

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Abstract

© 2019 IOS Press and the authors. All rights reserved.Due to the high rotational speed, the permanent magnet of surface-mounted high-speed permanent magnet generator is easily damaged by the centrifugal force. So a high strength alloy sheath is installed to protect the permanent magnet. The material, thickness and eddy current loss of the composite sheath of the high-speed permanent magnet generator with rotor strength constraint is studied thoroughly in this paper. Generator rotor strength under different limit conditions is calculated by numerical analysis method based on the thick-cylinder theory of elastic mechanics. Various methods have been used to reduce the eddy current. The composite sheath of high-speed permanent magnet generator on the basis of rotor strength constraint is presented. Change of the material, thickness of each layer of the sheath is determined by calculation of stress and eddy current loss and optimized design of composite sheath with reasonable stress distribution and lower eddy current loss. Strength test of prototype rotor is carried out.

Publication metadata

Author(s): Xu Y, Ai M, Wang W, Wang Y

Publication type: Article

Publication status: Published

Journal: International Journal of Applied Electromagnetics and Mechanics

Year: 2019

Volume: 61

Issue: 2

Pages: 247-262

Online publication date: 30/09/2019

Acceptance date: 02/04/2016

Date deposited: 18/12/2019

ISSN (print): 1383-5416

Publisher: IOS Press

URL: https://doi.org/10.3233/JAE-180117

DOI: 10.3233/JAE-180117

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