二极管钳位式多电平逆变器的拓扑结构分析

Analysis on Topology Structure of Diode-clamping Multi-level Inverter

为了解决低压 (中压 )主开关器件在高压应用情况下的矛盾 ,国外有许多学者提出了多电平逆变技术 ,并在铁路牵引系统中有初步应用 .在分析三电平和五电平逆变器基础上 ,对多电平逆变器的拓扑结构进行归纳分析 ,总结出多电平逆变器的通用结构 。

Many authors abroad proposed multi-level inverter technology applied in the system of railway traction,to solve the difficulty in low-voltage (medium-voltage) main switch device applied to high-voltage.The article analyzes the topology structure of multi-level inverter and summaries the universal structure of multi-level inverter,on the basis of analyzing three-level and five-level inverters.At the same time,the article analyzes and studies multi-level inverters based on voltage space vector.