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Tolerance-Insensitive Design of the Magnet Shape for a Surface Permanent Magnet Synchronous Motor

Author

Listed:
  • Chung-Seong Lee

    (Central R&D Center, Mando Corporation, Seongnam 13486, Korea)

  • Kyoung-Soo Cha

    (Department of Automotive Engineering, Graduate School of Engineering, Hanyang University, Seoul 04763, Korea)

  • Jin-Cheol Park

    (Department of Automotive Engineering, Graduate School of Engineering, Hanyang University, Seoul 04763, Korea)

  • Myung-Seop Lim

    (Department of Automotive Engineering, Graduate School of Engineering, Hanyang University, Seoul 04763, Korea)

Abstract

Many studies have been conducted to reduce the cogging torque of electric power steering motors. However, in the mass production of such motors, it is essential to enhance performance robustness in relation to tolerances. For such motors, this work analyzes performance robustness in relation to tolerances by applying a cycloid curve to the surface magnet of the rotor. Applying a cycloid curve to the magnet surface of the rotor is one of several ways to reduce cogging torque. To evaluate the performance of the cycloid curve, we compare it with an eccentric curve. The two curves are compared for the same specifications and evaluated using the indicator, tolerance insensitivity rate, which is used to assess performance robustness in relation to tolerances. The cycloid curve was evaluated to be more robust in relation to tolerances, as compared with the eccentric curve. Finally, an experiment was conducted to validate the robustness of the cycloid curve.

Suggested Citation

  • Chung-Seong Lee & Kyoung-Soo Cha & Jin-Cheol Park & Myung-Seop Lim, 2020. "Tolerance-Insensitive Design of the Magnet Shape for a Surface Permanent Magnet Synchronous Motor," Energies, MDPI, vol. 13(6), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:6:p:1311-:d:331368
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    References listed on IDEAS

    as
    1. Myeong-Hwan Hwang & Hae-Sol Lee & Hyun-Rok Cha, 2018. "Analysis of Torque Ripple and Cogging Torque Reduction in Electric Vehicle Traction Platform Applying Rotor Notched Design," Energies, MDPI, vol. 11(11), pages 1-14, November.
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    Cited by:

    1. Jin-Cheol Park & Soo-Hwan Park & Jae-Hyun Kim & Soo-Gyung Lee & Geun-Ho Lee & Myung-Seop Lim, 2021. "Diagnosis and Robust Design Optimization of SPMSM Considering Back EMF and Cogging Torque due to Static Eccentricity," Energies, MDPI, vol. 14(10), pages 1-19, May.
    2. Chung-Seong Lee & Hae-Joong Kim, 2022. "Harmonic Order Analysis of Cogging Torque for Interior Permanent Magnet Synchronous Motor Considering Manufacturing Disturbances," Energies, MDPI, vol. 15(7), pages 1-13, March.

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