Research on Cascade Multilevel Inverter Based on FPGA Control

This paper introduces the single-phase H bridge inverter topology and working principle, and gives the way how to design the parameters of cascade multi-level inverter filter. Use FPGA to realize the cascade multi-level inverter by carrier phase-shift control. The circuit structure is simple and high reliability. At last, design a cascade 2H bridge inverter prototype to test it. The experimental result shows that the inverter can output stable voltage in the way that given control strategy. The inverter has a wide range of application value.