A New Magnetic-Coupled Single-Switch DC-DC Converter with High Voltage Gain

This paper presents a novel non-isolated single-switch DC-DC converter with high voltage gain. The proposed topology avoids the need for extreme duty cycles by using a three-winding coupled inductor, a resonant capacitor, and voltage multiplier cells. It provides continuous input current, common-ground structure, low switch voltage stress, and high efficiency. A clamp capacitor recycles the leakage energy of the coupled inductor and limits the main switch voltage during turn-off. The operating modes are analyzed under steady-state CCM to derive voltage gain and stress equations. A ۲۵ V/۴۰۰ V, ۲۰۰ W simulated model is developed to verify the converter performance.

کلیدواژه ها:

high-step-up ، coupled-inductor ، three coupled inductor ، reduced voltage stress