一种新型Z源逆变器

New Type Z-source Inverter

为了提高逆变器直流侧输出电压,提出了一种新型Z源逆变器。该拓扑结构将Z源网络中的传统电感用开关电感代替,并且将两个开关电感型准Z源逆变器并联构成升压模块。讨论了该电路的工作原理,并用MATLAB软件进行仿真验证。仿真结果表明:该拓扑结构在较短的直通时间内升压能力更强,有效地减小了Z源网络中一个电容的电压应力,达到预期设计的目的。

In order to improve the output voltage of inverter direct current side,a new type of Z-source inverter was proposed. In this topology,the traditional inductance of Z-source in the network was replaced by the switch inductance,and two switch inductor type quasi Z source inverter were connected in parallel to form a voltage boosting module. The operation principle of the circuit was discussed and verified by MATLAB simulation. The results of MATLAB simulation show that this topology is more powerful in the short run time and the voltage stress of a capacitor in the Z source network is effectively reduced.