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Design and Analysis of a Permanent Magnet Vernier Machine with Non-Uniform Tooth Distribution

Author

Listed:
  • Fei Zhao

    (Power Electronics and Electrical Drives Center, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China)

  • Mengzhu Cao

    (Power Electronics and Electrical Drives Center, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China)

  • Encheng Tao

    (Power Electronics and Electrical Drives Center, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China)

  • Liyi Li

    (Institute of Electromagnetic and Electronic Technology, Harbin Institute of Technology, Harbin 150001, China)

Abstract

To improve the torque performance of the permanent magnet vernier machine in the direct-drive system for Unmanned Aerial Vehicle (UAV), this paper proposes the topology of non-uniform tooth distribution. This distribution, considering the additional flux harmonics, aims to contribute to torque improvement, whereas the cogging torque also increases at the same time. A phasors method is proposed to solve the issue caused by the non-uniform structure, adjusting the mechanic angle of each tooth reasonably to restrict the cogging torque. In addition, the non-uniform design is illustrated in detail, which includes the method of grouping the teeth, considering the factors of series pole ratio and winding layout. By using the three-dimensional finite element method, torque is significantly increased without additional torque ripple, which satisfies the desired design target.

Suggested Citation

  • Fei Zhao & Mengzhu Cao & Encheng Tao & Liyi Li, 2021. "Design and Analysis of a Permanent Magnet Vernier Machine with Non-Uniform Tooth Distribution," Energies, MDPI, vol. 14(22), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7816-:d:685011
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    References listed on IDEAS

    as
    1. Daekyu Jang & Junghwan Chang, 2017. "Influences of Winding MMF Harmonics on Torque Characteristics in Surface-Mounted Permanent Magnet Vernier Machines," Energies, MDPI, vol. 10(4), pages 1-17, April.
    2. Zhang, Chaoyu & Zhang, Chengming & Li, Liyi & Guo, Qingbo, 2021. "Parameter analysis of power system for solar-powered unmanned aerial vehicle," Applied Energy, Elsevier, vol. 295(C).
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