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Investigation of the Magnetic Circuit and Performance of Less-Rare-Earth Interior Permanent-Magnet Synchronous Machines Used for Electric Vehicles

Author

Listed:
  • Ping Zheng

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
    State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China)

  • Weinan Wang

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Mingqiao Wang

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Yong Liu

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Zhenxing Fu

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

Abstract

The less-rare-earth interior permanent-magnet synchronous machines (LRE-IPMSMs), which have the advantages of high power density, high efficiency, and low cost, are promising candidates for electric vehicles (EVs). In this paper, the equivalent magnetic circuit (EMC) of LRE-IPMSM is established and analyzed to investigate the machine design principles, and then the performance of an optimized machine is analyzed. Firstly, the equivalent magnetic circuits of the LRE-IPMSM are established by taking the saturation effect into consideration. Secondly, the effects of geometric parameters, such as the permanent-magnet (PM) width, the PM thickness, the flux barrier thickness, the flux barrier span angle, and the bridge width, on no-load flux, q -axis flux, and d -axis flux are investigated, respectively. The results calculated by the EMC method and finite-element analysis (FEA) are analyzed and compared, which proves the effectiveness of the EMC method. Finally, an optimized design of LRE-IPMSM obtained by the magnetic circuit analyses is proposed. The electromagnetic performances and mechanical strength of the optimized LRE-IPMSM are analyzed and verified, respectively.

Suggested Citation

  • Ping Zheng & Weinan Wang & Mingqiao Wang & Yong Liu & Zhenxing Fu, 2017. "Investigation of the Magnetic Circuit and Performance of Less-Rare-Earth Interior Permanent-Magnet Synchronous Machines Used for Electric Vehicles," Energies, MDPI, vol. 10(12), pages 1-22, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2173-:d:123509
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    Citations

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    Cited by:

    1. Guoyu Chu & Rukmi Dutta & Alireza Pouramin & Muhammed Fazlur Rahman, 2020. "Analysis of Torque Ripple of a Spoke-Type Interior Permanent Magnet Machine," Energies, MDPI, vol. 13(11), pages 1-16, June.
    2. Damian Caballero & Borja Prieto & Gurutz Artetxe & Ibon Elosegui & Miguel Martinez-Iturralde, 2018. "Node Mapping Criterion for Highly Saturated Interior PMSMs Using Magnetic Reluctance Network," Energies, MDPI, vol. 11(9), pages 1-19, August.
    3. Anna Przybył & Piotr Gębara & Roman Gozdur & Krzysztof Chwastek, 2022. "Modeling of Magnetic Properties of Rare-Earth Hard Magnets," Energies, MDPI, vol. 15(21), pages 1-18, October.

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