车用大功率电力电子器件研究进展

Power semiconductor devices used in electric vehicle drive systems

车用电机驱动变流器是电动汽车电机驱动的关键部件,大功率电力电子器件是其核心。对比分析了国内外电动车辆用电机驱动变流器的拓扑结构、变流器控制特点及体积功率密度等关键指标,指出车用电机驱动变流器的技术创新重点在于硅基绝缘栅双极性晶体管(IGBT)芯片及封装技术持续改进碳化硅(Si C)器件的应用。综述了硅基IGBT芯片的演进和IGBT模块封装技术的创新,介绍了碳化硅器件的技术特点。

On-board motor drive converter is the most important part of electric vehicle （EV） drive while the power semiconductor devices are its core. Comparison and analysis of EV drive converters, from mini car to big bus, are presented in terms of topology, control scheme and various key indexes such as power density etc. It is concluded that power semiconductor chip and its packaging are the highlight of innovation. The development of IGBT chip and its packaging technologies are described. The characteristics of silicon carbide are introduced. Further SiC device and its application research area are also discussed.