Coupled-Inductor-Inverse High Step-Up Converter With Voltage Multiplier

Abstract: The proposed converter includes a three winding coupled inductor inverse circuit combined with a boost converter. Hence the output voltage can be increased by reducing the turns ratio of the coupled inductor. Main switch suffers from high voltage stress due to the leakage inductance of the coupled inductor. A voltage multiplier circuit could further increase the voltage gain and output power. Voltage multiplier circuit can also reduce the voltage stress across the main power device. A clamping circuit consisting of a diode and capacitor could reduce the leakage inductance energy. The smooth operation of the proposed system is realised by sinusoidal pulse width modulation. A simulation of the proposed system is modelled and evaluated with desirable results in MATLAB/Simulink.

Keywords: PV-Photovoltaic, PWM – Pulse width modulation