A high step-up DC to DC topology with 3winding coupled-inductor for sustainable energy applications

Due to the typically low output voltage of renewable energy sources like solar panels, this work presents the development of a one-switch high step-up DC-DC converter with high efficiency and continuous input current. To achieve a significant voltage boost, the recommended step-up topology incorporates a three-winding coupled inductor and a voltage multiplier cell. Unlike conventional designs, this converter does not rely on operating at a high duty cycle; instead, it achieves high voltage gain by adjusting the turn ratio of the coupled inductor. The operational modes and theoretical model of the converter are analyzed, and the simulation validate the accuracy of the theoretical analysis.