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Axial Flux Permanent Magnet Synchronous Motor Cogging Torque Calculation Method Based on Harmonic Screening

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  • Xiao-Kun Zhao

    (College of Computer and Control Engineering, Northeast Forestry University, Harbin 150040, China)

  • Xin-Peng Zou

    (College of Computer and Control Engineering, Northeast Forestry University, Harbin 150040, China)

  • Qi-Chao Guo

    (College of Computer and Control Engineering, Northeast Forestry University, Harbin 150040, China)

  • Liang-Kuan Zhu

    (College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

Abstract

This paper proposes a harmonic screening-based method for calculating the cogging torque of the axial flux permanent magnet synchronous motor. The magnetic field energy in the air gap is derived from the air gap flux and the magnetomotive force of rotor. The cogging torque is then obtained using the energy-based method. Compared with finite element analysis, the proposed approach is significantly faster while maintaining high accuracy. It is particularly effective for scenarios involving stator staggering, which can facilitate quick calculation of cogging torques of many different staggering angles, offering rapid insights into motor performance during the initial design. The method achieves a similarity accuracy with FEA results and reduces computation time, demonstrating both its efficiency and reliability.

Suggested Citation

  • Xiao-Kun Zhao & Xin-Peng Zou & Qi-Chao Guo & Liang-Kuan Zhu, 2025. "Axial Flux Permanent Magnet Synchronous Motor Cogging Torque Calculation Method Based on Harmonic Screening," Energies, MDPI, vol. 18(14), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:14:p:3779-:d:1703278
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