中文摘要：

现有的关于多电平逆变器的研究工作主要是针对电压型多电平逆变器（VSI），电流型多电平逆变器（CSI）的研究成果较少。该文提出了一类单相多电平CSI拓扑，结构简单，所用开关器件数和分流电感数较少；由于拓扑具有自均流特性，即使在电路器件非理想的情况下，无需闭环控制仍然可以实现电流的均衡。文中分析了该类5电平拓扑的工作原理以及分流电感的自均流原理；通过引入多载波PODSPWM技术，给出了该技术在该类拓扑中的具体实现方法。文中最后给出了仿真和实验结果。

英文摘要：

Most of research works on multilevel inverters are about voltage source inverters while fewer are about current source inverters. In this paper, a generic single-phase multilevel CSI topology is proposed, the structure is very simple and including fewer switching valves and sharing-inductors. In addition, the topology has the ability of self-equilibrating current. The principles of operation and inductor current equilibrium of the 5-level inverter are presented. Method of multi-carrier phase opposition disposition （POD） PWM technique is given to be applied to the topologies. Lastly, the simulation and experimental results are given to verify the proposition.