LAPSE

LAPSE:2019.0215
Published Article
LAPSE:2019.0215
A Novel Flux Focusing Magnetically Geared Machine with Reduced Eddy Current Loss
Jin Liu, Wenxiang Zhao, Jinghua Ji, Guohai Liu, Tao Tao
January 31, 2019
This paper proposes a novel flux focusing magnetically geared (MG) machine for wind power generation, considering the permanent magnets (PMs) eddy current loss and the balance between the pull-out torque of MG machine and the back-electromotive force (EMF)of the PM brushless machine. The PM eddy current loss in the two rotors of the conventional surface-mounted MG machine is calculated and analyzed by using finite-element method. By adopting serial-spoke structure in the inner rotor, a novel rotor structure for a MG machine is proposed to reduce the PM eddy current loss. Moreover, in order to balance the pull-out torque and the back-EMF, several serial-spoke structures and the main design parameters are investigated. Then, a quantitative comparison between the proposed topology and the conventional surface-mounted MG machine is performed. The analysis results indicate that the PM eddy current loss of the proposed MG machine can be significantly reduced and its pull-out torque and back-EMF can be balanced well.
Keywords
back-electromotive force, eddy current loss, finite-element method, magnetic gear, serial-spoke structure, torque
Subject
Suggested Citation
Liu J, Zhao W, Ji J, Liu G, Tao T. A Novel Flux Focusing Magnetically Geared Machine with Reduced Eddy Current Loss. (2019). LAPSE:2019.0215
Author Affiliations
Liu J: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, Zhenjiang 212013, China
Zhao W: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, Zhenjiang 212013, China
Ji J: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, Zhenjiang 212013, China
Liu G: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, Zhenjiang 212013, China
Tao T: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China; Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle, Zhenjiang 212013, China
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Journal Name
Energies
Volume
9
Issue
11
Article Number
E904
Year
2016
Publication Date
2016-11-02
Published Version
ISSN
1996-1073
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Original Submission
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PII: en9110904, Publication Type: Journal Article
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LAPSE:2019.0215
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doi:10.3390/en9110904
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Jan 31, 2019
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CC BY 4.0
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[v1] (Original Submission)
Jan 31, 2019
 
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Jan 31, 2019
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Original Submitter
Calvin Tsay
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