Ultrahigh Voltage Gain DC-DC Converter Based on Reformed Quadratic Boost Converter with Switched Capacitor and Coupled Inductor

This paper presents a new ultrahigh voltage gain DC-DC converter composed of a reformed quadratic boost converter, a switched capacitor unit, and a coupled inductor. A secondary winding of the coupled inductor is unified with the switched capacitor and the leakage energy of the coupled inductor recycles through the output appropriately. The converter performance includes high voltage gain besides low voltage stress on its switch and diodes. In addition, it requires a small inductor on the input side that results in lower power loss. Its operations states and main equations are studied to investigate the converter properties. Using simulation in MATLAB Simulink the analysis is validated, and the results are used to demonstrate the suitable performance of the converter.