关键词: 轴向磁通电机, 非晶合金, 温度场, 风冷散热, 流固耦合

Abstract: A suitable cooling structure can garantee the safe operation of the motor while simplifying the motor design. In order to effectively control the overall temperature rise of axial flux motors with yoke-less stator structure and enhance their heat dissipation capability, an external rotor cooling structure with circumferential heat dissipation vanes integrated in the housing was proposed based on the low-loss characteristics of amorphous alloy motors. Through the method of fluid-solid coupling, the temperature field of the motor under this structure was analysed to verify the feasibility of the scheme. The temperature rise experiments were carried out on an axial flux motor with a rated power of 20 kW, and the experimental results proved the effectiveness of this heat dissipation structure.

Key words: axial flux motor, amorphous alloy material, temperature field, air-cooled heat dissipation, fluid-solid coupling