关键词: 碳化硅控制器, 驱动电机, 冷却系统, 三合一总成

Abstract: Based on the demand of further improving the efficiency and power density of the electric drive assembly system, A SiC(silicon carbide) three-in-one electric drive assembly system was designed. The structural design scheme of the SiC controller and drive motor were introduced, and expounded the cooling system design scheme of the SiC three-in-one electric drive assembly was expounded in detail.In order to further verify the performance of the SiC three-in-one electric drive assembly system designed in this paper, the prototype of the electric drive assembly system was made and the bench was also built for test and verification. The test results showed that the overall performance of the SiC three-in-one electric drive assembly system designed in this paper was better,and the efficiency of SiC controller is obviously better than the controller using IGBT module. Using SiC module to design the electric drive assembly is helpful to improve the power density of the whole vehicle electric drive system,and has a certain practical reference value for the design of the vehicle electric drive system.

Key words: SiC controller, drive motor, cooling system, three-in-one assembly