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Investigation on the Torque Ripple Reduction Method of a Hybrid Electric Vehicle Motor

Author

Listed:
  • Hyungkwan Jang

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

  • Hyunwoo Kim

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

  • Huai-Cong Liu

    (EPS Engineering Design Team, Hyundai Transys, Hwaseong 18280, Korea)

  • Ho-Joon Lee

    (Division of Converged Electronic Engineering, Cheongju University, Cheongju 28503, Korea)

  • Ju Lee

    (Department of Electrical Engineering, Hanyang University, Seoul 04763, Korea)

Abstract

Owing to the development of electric vehicles (EVs), research and development are underway to minimize torque ripple in relation to vibration and noise in EV motors. Although there are various ways to reduce torque ripple, this study analyzes the torque ripple, cogging torque, total harmonic distortion (THD), and magnetic flux density distribution for the three rotor shapes of interior permanent magnet synchronous motors, which are widely employed in EVs. To reduce the torque ripple while retaining the required average torque, the barrier shape is optimized, and wedge skew is applied. First, regarding the rotor barrier shape, torque ripple is primarily reduced by designing the rotor barrier shape with the response surface method, which is an experimental design method. Additionally, the wedge skew shape considering the bidirectional rotation and fabrication was applied to the stator shoe as a step and analyzed using three-dimensional finite element analysis. When designing the wedge skew, the layer subdivision according to the axial length, wedge skew diameter, and wedge skew position was analyzed and improved. The torque ripple reduction method in this paper can be applied not only to motors for EVs or Hybrid EVs (HEVs) but also all types of permanent magnet synchronous motors.

Suggested Citation

  • Hyungkwan Jang & Hyunwoo Kim & Huai-Cong Liu & Ho-Joon Lee & Ju Lee, 2021. "Investigation on the Torque Ripple Reduction Method of a Hybrid Electric Vehicle Motor," Energies, MDPI, vol. 14(5), pages 1-13, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1413-:d:510391
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    References listed on IDEAS

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    1. Zhimeng Rao & Wenjuan Zhang & Gongping Wu & Jian Zheng & Shoudao Huang, 2020. "Characteristic Analysis and Predictive Torque Control of the Modular Three-Phase PMSM for Low-Voltage High Power Application," Energies, MDPI, vol. 13(21), pages 1-20, October.
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    Cited by:

    1. Minhyeok Lee & Yunkyung Hwang & Kwanghee Nam, 2021. "Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis," Energies, MDPI, vol. 14(21), pages 1-18, November.
    2. Marcin Jastrzębski & Jacek Kabziński, 2021. "Approximation of Permanent Magnet Motor Flux Distribution by Partially Informed Neural Networks," Energies, MDPI, vol. 14(18), pages 1-21, September.

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