Cascaded five-level inverter system by model-based design

In view of power electronic devices need to handle higher voltage grade and capacity grade, multilevel converter has become the key to solve the problem. Cascaded inverter type is widely used because of the low harmonic pollution, high input power factor, as well as good output waveform. This paper adopts the method of model design to study the five-level inverter PWM control method systematically, and better output waveforms are gotten. The results show that the method of model-based design has higher quality and efficiency, and it is suitable for the multilevel inverter.