A New High Step-Up Three Coupled Winding Converter with LowVoltage Stress on the Power Switch

In this paper, a step-up converter with very highvoltage gain and low voltage stress as well as switching at zerovoltage for both main and auxiliary switches is presented. Theauxiliary circuit not only absorbs the energy of the leakageinductor well, but also provides soft switching conditions for theconverter elements. The auxiliary circuit has only one snubbercapacitor, one auxiliary switch, and one resonance inductor, andthe circuit capacitors are used as clamp capacitors. Theproposed high step-up converter is simulated in PSPICEsoftware and the simulation results confirm the theoreticalanalyzes of the converter.