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Performance Evaluation of an In-Wheel Motor Cooling System in an Electric Vehicle/Hybrid Electric Vehicle

Author

Listed:
  • Dong Hyun Lim

    (Korea Automotive Technology Institute (KATECH), 74 Yongjung-Ri, Pungse-Myun, Dongnam-Gu, Chonan-Si, Chungnam 330-912, Korea)

  • Moo-Yeon Lee

    (Department of Mechanical Engineering, Dong-A University, 37 Nakdong-Daero 550, Saha-Gu, Busan 604-714, Korea)

  • Ho-Seong Lee

    (Korea Automotive Technology Institute (KATECH), 74 Yongjung-Ri, Pungse-Myun, Dongnam-Gu, Chonan-Si, Chungnam 330-912, Korea)

  • Sung Chul Kim

    (Korea Automotive Technology Institute (KATECH), 74 Yongjung-Ri, Pungse-Myun, Dongnam-Gu, Chonan-Si, Chungnam 330-912, Korea)

Abstract

High power and miniaturization of motors in an in-wheel drive system, which is installed inside the wheels of a vehicle, are required for directly driving the wheels. In addition, an efficient cooling system is required to ensure high driving performance and durability. This study experimentally evaluated the heat dissipation performance of a 35-kW-class large-capacity in-wheel motor equipped with an internal-circulation-type oil-cooling system that exhibits high cooling performance and can be easily miniaturized to this motor. Temperatures of the coil and stator core of cooling systems with and without a radiator were measured in real time under in-wheel motor driving conditions. It was found that operating the cooling system at a continuous-rating maximum speed without the radiator was difficult. We confirmed that under continuous-rating base speed and continuous-rating maximum speed driving conditions, the cooling system with the radiator showed thermally stable operation. Furthermore, under maximum-rating base speed and maximum-rating maximum speed driving conditions, the cooling system with the radiator provided additional driving times of approximately 22 s and 2 s, respectively.

Suggested Citation

  • Dong Hyun Lim & Moo-Yeon Lee & Ho-Seong Lee & Sung Chul Kim, 2014. "Performance Evaluation of an In-Wheel Motor Cooling System in an Electric Vehicle/Hybrid Electric Vehicle," Energies, MDPI, vol. 7(2), pages 1-11, February.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:2:p:961-971:d:33180
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    References listed on IDEAS

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    Cited by:

    1. Taewook Ha & Nyeon Gu Han & Min Soo Kim & Kyu Heon Rho & Dong Kyu Kim, 2021. "Experimental Study on Behavior of Coolants, Particularly the Oil-Cooling Method, in Electric Vehicle Motors Using Hairpin Winding," Energies, MDPI, vol. 14(4), pages 1-15, February.
    2. Guo Hong & Tian Wei & Xiaofeng Ding & Chongwei Duan, 2018. "Multi-Objective Optimal Design of Electro-Hydrostatic Actuator Driving Motors for Low Temperature Rise and High Power Weight Ratio," Energies, MDPI, vol. 11(5), pages 1-21, May.
    3. Dan Dan & Yihang Zhao & Mingshan Wei & Xuehui Wang, 2023. "Review of Thermal Management Technology for Electric Vehicles," Energies, MDPI, vol. 16(12), pages 1-38, June.

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