五电平双降压式半桥逆变器  

A Novel Dual Buck Half Bridge Five-level Inverter

作　　者：杨伟[1] 洪峰[1] 王成华[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏省南京市210016

出　　处：《中国电机工程学报》2011年第24期19-25,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50907033);高等学校博士学科点专项科研基金资助项目(20093218110001)~~

摘　　要：以双Buck电路为基本单元构建多电平逆变器,提出新颖的五电平双降压式半桥逆变器。该拓扑结构不同于传统飞跨电容型、二极管箝位型或级联型多电平逆变器,它保留了双Buck逆变器无桥臂直通、无体二极管反向恢复问题的优点和电流半周期工作模式。与传统桥式多电平逆变器相比,钳位电路得到简化,电路复杂度降低,无桥臂直通隐患,系统稳定性提高。理论分析、仿真和实验结果均表明该逆变器性能优异,同时实现了高效率和小的滤波器体积重量。A novel dual Buck half bridge five-level inverter （DBHBFLI） was presented in this paper, using dual Buck circuit as the basic unit to build multilevel inverter. The topology of this inverter is different from the traditional multilevel inverters such as flying-capacitor multilevel inverter, diode-clamp multilevel inverter and cascade multilevel inverter, and it retains dual Buck half bridge inverter＇s （DBHBI） merits of no shoot-through problem, no body diode reverse-recovery problem, and half-period work mode. Compared with traditional multilevel inverter, clamp circuits are simplified, the complexity of circuit is reduced, and the stability of system is improved. The proposed inverter reaches a high efficiency and its filter is much small at the same time. Experiment verifies these analyses.

关 键 词：逆变器 拓扑结构 双降压 五电平 半桥 

分 类 号：TM464[电气工程—电器]