关键词: 混合冷却结构, 热管, 流固耦合, 轴向磁通永磁电机

Abstract: In view of the problem of difficult heat dissipation of the high power density double stator axial flux permanent magnet motor,a hybrid cooling structure of axial flux permanent magnet motor with heat pipe and end cover water cooling was proposed. By adding U-shaped heat pipe at the end of the winding,the heat generated by the stator core and winding was quickly transmitted to the cooling water channel to improve the heat dissipation efficiency of the motor. A double stator axial flux permanent magnet motor with power of 60 kW and speed of 15 000 r / min was taken as the research object. By establishing the temperature field simulation model of the motor, the heat dissipation effect of different water
channel structures combined with heat pipe was compared and analyzed. The results showed that the hybrid cooling structure of the end cover spiral channel structure and the heat pipe can significantly improve the heat dissipation capacity of the motor. Compared with the single end cover channel cooling,the maximum temperature rise of stator core and winding was reduced by 17. 7 K and 14. 9 K separately.