A Novel High step-up dc–dc converter for Boosting Fuel Cell Voltage through the Three-Winding Coupled Inductor

Abstract

The main objective of this paper is to design and implement a novel a high step-up dc–dc converter which is devised for boosting the voltage generated from fuel cell through the three-winding coupled inductor and voltage doubler circuit, the proposed converter achieve high step-up voltage gain without large duty cycle. The main advantages of the proposed converter are simple topology, high step-up voltage gain, continuous input current, recycling the energy of the leakage inductance of the coupled inductor, and utilizing only one active switch with reduced voltage stress. Reduced switch voltage stress results in selection of switch with low on-resistance which improves the efficiency. Operational principles of the converter in steady state are studied and an analytical approach is used to attain voltage gain and switch voltage stress. Finally appropriate performance of the proposed topology is verified by simulation.