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Analytical Model of Modular Spoke-Type Permanent Magnet Machines for In-Wheel Traction Applications

Zhang, Hengliang; Hua, Wei; Gerada, David; Xu, Zeyuan; Gerada, Chris

Authors

Hengliang Zhang

Wei Hua

David Gerada

Zeyuan Xu

Chris Gerada



Abstract

This paper proposes an analytical model of modular spoke-type permanent magnet (MSTPM) machines based on air-gap field modulation (AFM) theory. Firstly, a fundamental AFM model of open-circuit MSTPM machines is introduced. The open-circuit air-gap field of MSTPM machines is determined by three fundamental elements including the primitive magnetizing magnetomotive force (MMF) produced by permanent magnet (PM), and two modulators which consist of stator and rotor permeance. The analytical MMF excited by PM (PM-MMF) can be calculated by using magnetic circuit method, while the stator and rotor permeance models are developed based on relative permeance (RP) method. Thereafter, a general model is proposed to calculate the open-circuit back electromotive force (EMF) of MSTPM machines. Further, the winding inductance model is established on the basis of equivalent magnetic circuit method and RP model. Finally, the machine performance is predicted by the analytical model, and verified by both finite element analysis (FEA) and experimental results.

Journal Article Type Article
Publication Date Mar 10, 2020
Journal IEEE Transactions on Energy Conversion
Print ISSN 0885-8969
Electronic ISSN 1558-0059
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
APA6 Citation Zhang, H., Hua, W., Gerada, D., Xu, Z., & Gerada, C. (2020). Analytical Model of Modular Spoke-Type Permanent Magnet Machines for In-Wheel Traction Applications. IEEE Transactions on Energy Conversion, https://doi.org/10.1109/tec.2020.2979886
DOI https://doi.org/10.1109/tec.2020.2979886
Keywords Electrical and Electronic Engineering; Energy Engineering and Power Technology
Publisher URL https://ieeexplore.ieee.org/document/9031315
Additional Information © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.

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