不同工况电动汽车轮毂电机磁场温度场分析

Temperature field analysis of hub motor of electric vehicle under different working conditions

针对电动汽车行驶过程中轮毂电机的温升问题,文章采用试验与仿真相结合的方法,联系汽车具体行驶工况研究电动汽车在空载、负载工况下轮毂电机内部的磁场、温度分布特性。将Maxwell中仿真得到的电机各部位的热源耦合到Ansys Workbench当中,使结果较为准确。结果表明空载负载情况下磁场中各损耗所占比例是有差别的,各部位生热不一样,温度比较高;最后将仿真结果与实际实验作对比,从而验证了磁热耦合方法的正确性。

Forelectric car wheel motor temperature rise in the process of problem, this paper adopts the method of combi -ning experiment and simulation to contact the specific condition of the electric car wheel motor under no-load and load conditions of internal magnetic field, the temperature distribution characteristics. Will Maxwell simulation have been the motor of the different parts of heat source coupled to the Ansys Workbench, the results show that light in various load cases magnetic field loss proportion is distinct, each part is not the same as the heating, the temperature is higher; Finally, the simulation results are compared with the actual experiments to verify the correctness of the magneto-thermal coupling method.