SiC功率器件在轨道交通行业中的应用

为解决轨道交通牵引及辅助系统的轻量化等问题,宽禁带半导体器件如SiC器件的应用需求越来越大。SiC材料具有禁带宽度大、击穿场强高、电子饱和漂移速率快等特性,能满足在中大功率、高温、高频条件下工作的应用要求。简述了SiC器件相比传统硅基器件的突出优势及商业化和实验室研发情况,介绍了SiC功率器件在轨道交通行业中的发展现状,同时对其在未来轨道交通装备业的发展提出了建议和展望。

Application of Silicon Carbide Power Devices in Rail Transit

In order to solve the lightweight problems of rail traffic traction and auxiliary systems,the applications of widebandgap semiconductor devices such as silicon carbide devices are increasing rapidly.Silicon carbide has the characteristics of widebandgap,high breakdown voltage and high electron saturation velocity,which can meet the requirements of power electronic device applied under high power,high temperature and high frequency conditions.The outstanding advantages of silicon carbide devices over traditional silicon-based devices were briefly introduced,as well as the current status of commercialization and laboratory development of silicon carbide devices.The applications of silicon carbide devices in rail transit were described,suggestions and prospects for the using of silicon carbide devices in converters in the future were also provided.