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Thermal Analysis of Axial-Flux Permanent Magnet Motors for Vehicles Based on Fast Two-Way Magneto-Thermal Coupling

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  • Xiaoting Zhang
  • Bingyi Zhang
  • Xin Chen
  • Simeng Zhong
  • Wei Liu

Abstract

Axial-flux permanent magnet motor (AFPMM) have small size and high power density. It has a good application prospect in the field of new energy vehicle driving. In this paper, based on a 56 kW AFPMM, the magnetic circuit characteristics are calculated by the split loop method, considering the influence of pulse width modulated (PWM) power supply. The loss is taken as the heat source, combined with the motor structure characteristics and cooling conditions, the lumped-parameter thermal network model of the motor is established to solve the steady-state and transient temperature distribution of each structure. By this way, fast and accurate thermal calculation of the motor is realized in design stage. The accuracy of the lumped-parameter thermal network model is verified by experiment. At the same time, the effects of spliting the permanent magnet (PM) into pieces, flow rate of cooling water, and loss distribution on temperature rise are analyzed. This research work provides an effective fast thermal calculation method for AFPMM and provides a reference basis for the design of similar motors. It has important value of theoretical significance and engineering practical.

Suggested Citation

  • Xiaoting Zhang & Bingyi Zhang & Xin Chen & Simeng Zhong & Wei Liu, 2022. "Thermal Analysis of Axial-Flux Permanent Magnet Motors for Vehicles Based on Fast Two-Way Magneto-Thermal Coupling," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-15, April.
    • Handle: RePEc:hin:jnlmpe:1880912
    DOI: 10.1155/2022/1880912
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