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Cooling Effect of Water Channel with Vortex Generators on In-Wheel Driving Motors in Electric Vehicles

Author

Listed:
  • Jae Chang Bae

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si 712-749, Gyeongbuk-do, Korea)

  • Hyeon Rae Cho

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si 712-749, Gyeongbuk-do, Korea)

  • Saurabh Yadav

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si 712-749, Gyeongbuk-do, Korea)

  • Sung Chul Kim

    (School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si 712-749, Gyeongbuk-do, Korea)

Abstract

Designing an effective cooling system for high-power-density in-wheel motors of electric vehicles is required to avoid the irreversible demagnetization of the permanent magnet due to a rise in its temperature. In this study, a water-cooling channel was used between the stator and housing to evaluate the cooling performance of a 25 kW in-wheel motor utilizing the commercially available software Ansys Fluent 19.2. Initially, cooling channels with a single or pair of vortex generators have been used with varying heights for pressure drop evaluation considering the allowable pressure drop of 0.7 bar for a water pump. The results indicates that both a single and a pair of vortex generators satisfy the limit of a pressure drop at the height of 4 and 3 mm, respectively, and the cooling performances of two vortex generators were evaluated at these heights. It has been found that the cooling performance of a permanent magnet is enhanced by 4.1% and 6.5% using a single and a pair of vortex generators, respectively, compared to the cooling channel without a vortex generator. Furthermore, considering the ram air effect on water-cooling channels of in-wheel motors under high-speed conditions, the temperature of the permanent magnet is decreased by about 2.1 °C and was found to be 148.8 °C under the temperature limit of demagnetization of the permanent magnet.

Suggested Citation

  • Jae Chang Bae & Hyeon Rae Cho & Saurabh Yadav & Sung Chul Kim, 2022. "Cooling Effect of Water Channel with Vortex Generators on In-Wheel Driving Motors in Electric Vehicles," Energies, MDPI, vol. 15(3), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:3:p:722-:d:728391
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    References listed on IDEAS

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    1. Foley, Aoife & Tyther, Barry & Calnan, Patrick & Ó Gallachóir, Brian, 2013. "Impacts of Electric Vehicle charging under electricity market operations," Applied Energy, Elsevier, vol. 101(C), pages 93-102.
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    Cited by:

    1. Mikhail A. Sheremet, 2023. "Numerical Simulation of Convective Heat Transfer," Energies, MDPI, vol. 16(4), pages 1-3, February.
    2. Dmytro Konovalov & Ignat Tolstorebrov & Trygve Magne Eikevik & Halina Kobalava & Mykola Radchenko & Armin Hafner & Andrii Radchenko, 2023. "Recent Developments in Cooling Systems and Cooling Management for Electric Motors," Energies, MDPI, vol. 16(19), pages 1-31, October.

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