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Oil-Cooling Method of the Permanent Magnet Synchronous Motor for Electric Vehicle

Author

Listed:
  • Fulai Guo

    (National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing 100081, China)

  • Chengning Zhang

    (National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing 100081, China)

Abstract

The typical motor has poor heat dissipation conditions that are limited by the installation space and working environment, and the high operation temperature increase has been a bottleneck to improve the power density and torque density. The inner rotor motor is considered to be the research object, and an oil-cooling structure for end winding and stator core is proposed. The heat inside the motor is mainly carried away through the lubricating oil in the form of heat conduction and convection heat transfer. The 3d motor model was built using the ANSYS software. The temperature field of the motor was simulated to analyze the temperature distribution inside the motor under rated and peak working conditions. The low-speed high-torque test and one-hour temperature-rise test of the motor prototype were performed on a bench built in the laboratory. The comparison between the test results with water-cooled motor shows that the temperature-rise rate of oil-cooled motor with the same electromagnetic structure is slower than that of water-jacketed cooled motor, and the temperature difference between the front and back of the motor decreases by 18 °C in half an hour. The oil-cooled method has a good cooling effect on the stator core and works for longer time under rated conditions.

Suggested Citation

  • Fulai Guo & Chengning Zhang, 2019. "Oil-Cooling Method of the Permanent Magnet Synchronous Motor for Electric Vehicle," Energies, MDPI, vol. 12(15), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:15:p:2984-:d:254168
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    References listed on IDEAS

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    1. Hao Yan & Yongxiang Xu & Jibin Zou, 2016. "A Phase Current Reconstruction Approach for Three-Phase Permanent-Magnet Synchronous Motor Drive," Energies, MDPI, vol. 9(10), pages 1-16, October.
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    Cited by:

    1. Junjie Zhao & Bin Zhang & Xiaoli Fu & Shenglin Yan, 2021. "Numerical Study on the Influence of Vortex Generator Arrangement on Heat Transfer Enhancement of Oil-Cooled Motor," Energies, MDPI, vol. 14(21), pages 1-17, October.
    2. Gaurav Kumar Pandey & Siddharth Sriram Sikha & Abhineet Thakur & Sai Sravan Yarlagadda & Sai Santosh Thatikonda & Bibin Baiju suja & Arkadiusz Mystkowski & Egidijus Dragašius & Edison Gundabattini, 2023. "Thermal Mapping and Heat Transfer Analysis of an Induction Motor of an Electric Vehicle Using Nanofluids as a Cooling Medium," Sustainability, MDPI, vol. 15(10), pages 1-18, May.
    3. Said Bentouba & Nadjet Zioui & Peter Breuhaus & Mahmoud Bourouis, 2023. "Overview of the Potential of Energy Harvesting Sources in Electric Vehicles," Energies, MDPI, vol. 16(13), pages 1-22, July.
    4. Edison Gundabattini & Arkadiusz Mystkowski & Adam Idzkowski & Raja Singh R. & Darius Gnanaraj Solomon, 2021. "Thermal Mapping of a High-Speed Electric Motor Used for Traction Applications and Analysis of Various Cooling Methods—A Review," Energies, MDPI, vol. 14(5), pages 1-32, March.

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