一种新型混合非对称多电平逆变器的研究

Study of a Novel Hybrid Asymmetrical Multilevel Inverter

提出了一种新型混合非对称多电平逆变器,该逆变器的突出优点是在输出相同电平的条件下,电路所需的开关元器件和其他元器件比传统的多电平逆变器要少的多,简化了电路结构和控制,降低了成本。对逆变器主电路的结构和工作原理进行了详细阐述,并采用消谐波脉宽调制(Subharmonic Pulse Width Modulation,简称SHPWM)进行控制。最后给出了仿真结果,验证了理论分析。

A novel asymmetrical multilevel inverter is proposed in this paper. The main advantage of the asymmetrical multilevel inverter is the switching devices and other components which needed in the circuit are much less than the traditional multilevel inverters when producing the same number of output levels. So it simplifies the circuit and the control method, reduces the costs. The topology and the operational principle of the main circuit are analyzed in detail. The circuit is controlled by Subharmonic Pulse Width Modulation （SHPWM）. Finally, simulation results are presented to verify the proposed method.