SiC器件在轨道交通辅助变流器的应用研究

Application of silicon carbide devices in auxiliary converters of rail vehicles

SiC器件因其优越性能而受到电力电子行业广泛关注。考虑轨道交通车载变流器的特点,以及SiC器件制造工艺和成本等因素,文章以SiC器件在轨道交通车辆辅助变流器的应用为设计目标,对功率器件选型、主回路杂散参数抑制、功率模块结构设计和变流器控制方法等方面展开研究,并完成基于SiC器件的辅助功率模块样机研制,为SiC器件在轨道交通车辆中的应用奠定基础。

Silicon carbide(SiC)devices have attracted extensive attention in the power electronics industry because of its superior performance.Considering the characteristics of rail transit on-board converters,as well as the manufacturing process and the cost of silicon carbide devices,this paper takes the application of silicon carbide devices in auxiliary converters of urban rail vehicles as the target.Research on the selection of power devices,suppression of stray parameters of main circuits,structural design of power modules,and the way of converters’control are carried out,and an auxiliary power module prototype based on silicon carbide devices is developed,which lays a foundation for the application of silicon carbide devices in rail vehicles.