关键词: 电机控制器, IGBT 结温, 低热阻, 散热流道

Abstract: Based on the straight in and straight out series heat dissipation water channel, the thermal resistance and heat dissipation influencing factors between the IGBT module heat dissipation substrate and the water channel were sorted out. The influence of various factors on junction temperature and channel flow resistance was simulated and analyzed. On the basis of the series water channel structure, three types of low thermal resistance water channel structures were obtained,
including strip bars, cylindrical bars, and elliptical bars, which increased the cooling capacity by 21%, 28%, and 34.8%, respectively. The research results can provide some reference for the design of cooling water channels for motor controller IGBT and the selection of parameters on the heat dissipation path.

Key words: motor controller, IGBT junction temperature, low thermal resistance, heat dissipation channel