FPGA Based Control of Single Phase Three-Level Soft Switching Isolated DC-DC Converter

Abstract

The single phase three level isolated DC-DC converter consists of four control switches operate under ZVS However, the single-phase three-level isolated DC-DC soft switching converter has been proposed in order to reduce voltage and current stresses. This converter topology requires less number of control switches and operates with an asymmetrical duty cycle control. The proposed three level DC-DC converters provide two- level voltage waveform before dc output filter, which significantly reduce the size of dc output filter. The proposed work has been implemented using MATLAB/SIMULINK and the performance of the proposed converter is verified experimentally by using FPGA controller.