一种新型不对称型多电平逆变器

A Novel Asymmetric Multilevel Inverter

传统级联H桥多电平逆变器增加电平数就需增加级联H桥数量,相应地增加了更多的开关器件。为了提高多电平逆变器的电平数以及使用更少的开关器件数,提出一种不对称型多电平逆变器新拓扑结构。该拓扑结构可以用更少的开关器件生成更高的输出电压电平数,降低了电路复杂性和成本。通过Matlab/Simulink搭建15电平不对称型多电平逆变器模型验证该拓扑的正确性,仿真和实验结果证明了新型多电平逆变器能够用更少的开关器件生成更多电平数的较高质量的输出电压。

Traditional cascaded H-bridge multilevel inverters need to increase the number of cascaded H-bridges to increase the number of levels,and accordingly add more switching devices.In order to increase the number of levels of the multilevel inverter and use fewer switching devices,a new topology of asymmetric multilevel inverter is proposed.This topology can generate higher output voltage levels with fewer switching devices,reducing circuit complexity and cost.The correctness of this topology is verified by building a 15-level asymmetric multilevel inverter model through Matlab/Simulink.Simulation and experimental results prove that the new multilevel inverter can generate higher-quality output voltage with more switching levels using fewer switching devices.