电动汽车电机控制器IGBT温度控制装置和策略

Electric Vehicle Motor Controller IGBT Temperature Control Device and Strategy

IGBT模组是电机控制器的核心功率元件,在电动汽车复杂运动工况下,长时运行会导致IGBT模组内部温度波动并引起热失效问题,会影响电机控制器的控制精度、整车的舒适性以及续航里程,甚至会烧穿IGBT模组,因此对IGBT模组的冷却变得越来越重要。本文研究现有IGBT冷却方式,针对现有风冷和液冷技术对电机控制器IGBT模组冷却不足,散热性较差,并且难以控制IGBT模组温度的技术问题,本文采用半导体制冷片冷却IGBT模组,可有效控制IGBT模组的温度,并且提前冷却。

IGBT module is the core power component of the motor controller.Under the complex movement conditions of electric vehicles,the long-term operation will lead to the internal temperature fluctuation of IGBT module and cause thermal failure,which will affect the control accuracy of the motor controller,the vehicle comfort and endurance mileage,and even burn through the IGBT module.Therefore,cooling of IGBT modules is becoming more and more important.In this paper,the existing IGBT cooling mode is studied.In view of the technical problems of the existing air cooling and liquid cooling technology on the motor controller IGBT module cooling is insufficient,the heat dissipation is poor,and it is difficult to control the temperature of IGBT module,this paper adopts the semiconductor refrigeration chip cooling IGBT module,which can effectively control the temperature of IGBT module and cool in advance.