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Loss and Thermal Analysis of a High-Power-Density Permanent Magnet Starter/Generator

Author

Listed:
  • Xiaojun Ren

    (Fluid and Monitoring Laboratory, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Zhikai Chen

    (Fluid and Monitoring Laboratory, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Rui Du

    (Fluid and Monitoring Laboratory, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Ming Feng

    (Fluid and Monitoring Laboratory, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

Reducing heat and improving the overall operation stability of the motor play a key role in the design of a starting engine. This paper focuses on the loss and thermal analysis of a permanent magnet (PM) brushless machine used in starter generators. The loss of the starter generator was calculated through a combination of theoretical analysis and the finite element method. A thermal analysis model was established based on the division of the fluid domain, boundary grid, heat source setting, and so on. The temperature fields of the whole motor and the main components were calculated and analyzed. The main factors affecting the air cooling effect were analyzed, including air flow rate, air temperature, and motor speed. A prototype experimental platform of the SG motor was built. The efficiency and temperature rise in the motor were tested. The temperature values were compared with the calculated values. The experimental results show that the performance of the motor is excellent, and the error between the temperature and the design calculation is less than 10% under each load torque. The accuracy of the thermal analysis method is verified. The correctness of the motor transient model was also confirmed through a temperature rise experiment under rated conditions, providing a research basis for improving operation efficiency.

Suggested Citation

  • Xiaojun Ren & Zhikai Chen & Rui Du & Ming Feng, 2024. "Loss and Thermal Analysis of a High-Power-Density Permanent Magnet Starter/Generator," Energies, MDPI, vol. 17(20), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:20:p:5049-:d:1496305
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    References listed on IDEAS

    as
    1. Haoquan Zhang & Baoquan Kou & Lu Zhang, 2023. "Design and Analysis of a Stator Field Control Permanent Magnet Synchronous Starter–Generator System," Energies, MDPI, vol. 16(13), pages 1-20, July.
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