一种改进型Quasi-Z源逆变器  

An Improved Version of Quasi-Z Source Inverter

作　　者：孙春霞[1] 汪成明[1] 滕青芳[1] 

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2012年第6期59-62,66,共5页Journal of Lanzhou Jiaotong University

基　　金：甘肃省科技支撑计划项目(097GKCA052)

摘　　要：在保留Quasi-Z源逆变器优点的条件下,提出一种改进型Quasi-Z源逆变器拓扑.在升压能力相同时,改进型Quasi-Z源逆变器有效降低电容启动电压、稳态电压及电路启动的冲击电流.另外,在采用相同电容、电感器件的情况下,能承受更高的调制因子,提高了输出电压的质量与系统的稳定性.在理论研究的基础上,基于简单升压控制下的仿真结果验证了改进型的正确性和优越性.The improved version of Quasi-Z source topology is proposed.The method reserves the advantages and boost ability of Quasi-Z source inverter,and the capacitor voltage stress,steady-state voltage and the inrush current during startup are reduced greatly.Furthermore,using the same capacitance and inductance,the inverter can withstand higher modulation factor and improve output voltage quality and stability of the system.Based on the theoretical analysis,the simulation result for simple boost control demonstrates the correctness and superiority of the improved topology.

关 键 词：Quasi-Z源逆变器 电路拓扑 升压能力 电容电压 电感电流 

分 类 号：TM464[电气工程—电器]