Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Temperature characteristics of vehicle motors under extreme variable working conditions

  • He, Lian-Ge (School of Vehicle Engineering, Chongqing University of Technology) ;
  • Shi, Wen-Jun (School of Vehicle Engineering, Chongqing University of Technology)
  • Received : 2020.09.03
  • Accepted : 2020.11.20
  • Published : 2021.02.20
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Abstract

To study the temperature distribution and change the law of the permanent magnet synchronous motors used in vehicles during extreme driving, the concept of extreme variable working condition (a running process from a low-power condition where a motor can run for a long time, to peak power and then to a low-power condition) was proposed. To calculate the temperature field, an overall simplified model of a motor was established, and the three-dimensional temperature field of the motor under some single working conditions was obtained by finite element simulation. Then, the accuracy of the simulation model and the calculation results were verified by a comparison with bench test data. Finally, a temperature field simulation calculation of the motor was carried under extreme variable working conditions, and the temperature rise characteristics of the motor under extreme working variable conditions were obtained. The results were obviously different from those of the normal working conditions.

Keywords

Acknowledgement

This study was supported by the China Postdoctoral Science Foundation-funded Project (Grant No: 2019M663443), the Chongqing Research Program of Basic Research and Frontier Technology (Grant No: cstc2017jcyjAX0120), the Youth Project of Science and Technology Research Program of Chongqing Education Commission of China (Grant No: KJQN201901113), National Key R&D Program of China (Grant No: 2018YFB0106100) and Electric Vehicle Industry Technology Innovation Strategies Alliance Direction Common Technology (Grant No: CA2019).

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