Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (12): 30-35.doi: 10.16180/j.cnki.issn1007-7820.2021.12.006

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Calculation of Motor Temperature Field Based on Fluent

FANG Xin1,WU Yaohui1,WU Haozhen2   

  1. 1. School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China
    2. Zhengzhou Technology and Business University,Zhengzhou 451400,China
  • Received:2020-08-17 Online:2021-12-15 Published:2021-12-06
  • Supported by:
    National Natural Science Foundation of China(61340015);Ministry of Education Collaborative Education Project(201701056027);Ministry of Education Collaborative Education Project(201702064052);Ministry of Education Innovation and Entrepreneurship Fund(201802060039)


The calculation of motor temperature field is an essential part of motor design. The temperature rise of motor is related to the safety and stability of the whole system and related equipment. According to the parameters of the motor, the electromagnetic model of the motor is established to calculate the loss, and the loss is loaded into the two-dimensional model in the form of heat source density to calculate the motor temperature field. In order to improve the accuracy of temperature rise calculation, the equivalent thermal conductivity method is used to process the heat exchange in the air gap of the motor according to the structure characteristics of the moto. The accuracy of the equivalent thermal conductivity method is verified by comparing the simulation results with the experimental data. Fluent software is adopted to solve the two-dimensional temperature field model in a unidirectional coupling way. Finally, the temperature field data obtained by the experiment is compared with the simulation calculation results to verify the accuracy of the two-dimensional model to calculate the steady-state temperature field of the experimental motor.

Key words: temperature field, loss, heat source density, two dimensional, electromagnetic, air gap, equivalent thermal conductivity, Fluent

CLC Number: 

  • TP391.9