PV based high voltage gain quadratic DC-DC converter integrated with coupled inductor

The converter with high voltage gain is used for photovoltaic application. This paper presents quadratic boost converter incorporated with coupled inductor, voltage doubler cell and clamped circuit. This converter is used for stepping up the voltage of photovoltaic system. The coupled inductor primary side is connected to the capacitor of clamped circuit which reduces the voltage stress of power switch and further transfers leakage energy of primary side to the output. Thus, the leakage energy of coupled inductor is effectively recycled. The PV voltage of 38V is stepped up to 380V by using this converter. The input power, output power and efficiency of the converter are presented in this paper. Thus, a prototype has been implemented.