Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (5): 15-20.doi: 10.16180/j.cnki.issn1007-7820.2020.05.003

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Research on Transient Temperature Field of Motor Based on Multifield Coupling

SONG He1,2,WU Yaohui1,2,WU Haozhen3   

  1. 1. School of Electrical Engineering and Automation,Henan Polytechnic University, Jiaozuo 454000,China
    2. Direct Drive Elevator-Engineering Technology Research Center of Henan Province, Jiaozuo 454000,China
    3. Zhengzhou Technology and Business University,Zhengzhou 451400,China
  • Received:2019-03-12 Online:2020-05-15 Published:2020-06-02
  • 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);Natural Science Research Program of Education Department of Henan Province(2010A470003);Natural Science Research Program of Education Department of Henan Province(2009B470003)


To solve the transient calculation of temperature field problem caused by unstable heating of the motor under complex working conditions, a two-dimensional coupling model of electromagnetic field and temperature field was established according to the law of unstable heat. Based on the structural characteristics of small type asynchronous motor, the structural parameters, boundary condition parameters, electrical and thermal physical parameters calculation, equivalent and configuration of the electromagnetic field-thermal field two-dimensional model were performed. According to the law of heating variation under complex working conditions, the coupling frequency and heat source coupling mode were designed, and the relevant parameters were calculated and configured. The transient temperature field calculation of the motor under unstable load was realized, and the actual maximum temperature distribution of each part of the motor was investigated. The temperature rise experiment was carried out through the scheme design and construction of the experimental platform. The simulation and experimental results of the transient temperature field of the motor showed that the rationality of parameters equivalence of the two-dimensional model and multi-field coupling method could accurately calculate the full transient temperature field of the motor under complex conditions.

Key words: complex working condition, two-dimensional model, unstable load, transient temperature field, parameters equivalence, multi-field coupling

CLC Number: 

  • TP391.9