关键词: 冷却结构优化, 温度场, 有限体积法, 牵引电机

Abstract: To reduce the production cost of a self-ventilated traction motor,this study proposes an optimized cooling structure ( structure B ) based on the original configuration ( structure A ) . For these two structures, three-dimensional conjugate heat transfer calculation models of the motor temperature field were established respectively. The accuracy of the adopted calculation method was verified by comparing the simulation results of structure A with the experimental data. Simulation results show that compared with structure A,the increment of rotor temperature rise of structure B is less than 1 K,while the decrement of stator temperature rise exceeds 3 K. The research indicates that by optimizing the external air path and eliminating the internal circulation fan, the production cost can be reduced while satisfying the temperature rise requirements of the motor.

Key words: cooling structure optimization, temperature field, finite volume method, traction motor