基于晶闸管的五电平注入式电流源型变换器

摘要

In view of a large amount of harmonic waves and the power switch losses produced by traditional current source converter,a new topology of five-level reinjection current source converter(FLR-CSC)is studied.The new type converter merges technologies of multi-level,harmonic injection and soft switching,and it has a good developing prospect.The working principle of the topology is analyzed,the structure of the prototype system is described,and the design of the pulse program based on field programmable gate array(FPGA) is introduced.The feasibility of FLR-CSC four-quadrant operation is verified on the prototype platform,and the application of FLR-CSC is prospected.%针对传统电流源型变换器在工作过程中会产生大量谐波及在大功率应用场合功率开关损耗较大的问题,研究了一种新型五电平注入式电流源型变换器(FLR-CSC),该新型变换器综合了多电平技术、软开关技术及纹波注入技术,具有良好的发展前景.分析了拓扑的工作原理,阐述了样机系统结构,分析了基于现场可编程门列阵(FPGA)的触发脉冲设计思路.在样机平台上验证了FLR-CSC四象限运行的可行性,并以此为基础对FLR-CSC的应用进行了展望.