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A New Spoke PM Motor with ECC ASPs to Reduce Flux Density Harmonics

Author

Listed:
  • Gaohong Xu

    (Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Tang Tang

    (Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Qian Chen

    (Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Zexin Jia

    (Department of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

This paper proposes new eccentric (ECC) auxiliary salient poles (ASPs) applied in spoke permanent-magnet (PM) motors. These ECC ASPs optimize flux density harmonics and further reduce torque pulsation. Then, the optimization procedure is proposed to reveal the relationship between the ECC method and ASP, and optimization steps are reduced. Firstly, the design of the ECC ASPs is based on the stairs, which are equivalent to sinusoidal flux density. Second, the expressions of offset length for maximum air gap, pole arc angle, and thickness ratio are revealed. Through theoretical analysis and the finite element method (FEM), the proposed ECC ASPs can generate low torque pulsation and improve sound and vibration features.

Suggested Citation

  • Gaohong Xu & Tang Tang & Qian Chen & Zexin Jia, 2022. "A New Spoke PM Motor with ECC ASPs to Reduce Flux Density Harmonics," Energies, MDPI, vol. 15(17), pages 1-15, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6184-:d:897843
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