提出了一种混合供电型级联式不对称多电平逆变器.首先对该多电平逆变器的拓扑结构进行理论分析；然后以输出7电平为例，运用正负反相载波层叠脉宽调制方法和反馈控制相结合的方法，通过调整开关逻辑，控制电容电压稳定在期望值，从而达到输出为理想7电平的目的.最后在MATLAB模拟环境中搭建逆变和控制电路，通过仿真验证了所提出多电平逆变器拓扑结构和控制方法的有效性.
This paper presents an asymmetry hybrid cascaded multilevel inverter. Firstly, the topology of the proposed inverter is introduced theoretically. Then, taking seven-level output for example, using the phase opposition disposition pulse width modulation (PODPWM) combining with feedback control method, the capacitor voltage is controlled at the desired value by adjusting the switching logic, so as to achieve the purpose of making the output seven-level. Finally, the inverter and control circuit is built in MATLAB, and the simulation results support the proposed inverter and the control method.
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