Design and Implementation of an Interleaved High Efficiency and High Voltage Gain Converter With Minimum Switch Count for Renewable Energy Integration

This article proposes a new nonisolated, interleaved, high step-up, soft-switching converter for renewable energy applications. The proposed converter is a boost topology designed to have a continuous input current with low ripple. It employs no auxiliary circuit or extra switches to achieve soft-switching, and the voltage stress on the power switches is reduced. By using the transformer's leakage inductance, the power diodes’ reverse recovery current problem is tackled without the need for an extra snubber circuit. The proposed converter has been analyzed and compared with similar topologies. Experimental results from a 400-W prototype with a 30–300 V conversion ratio are presented, demonstrating the effectiveness of the proposed converter, which is well-suited for use with renewable energy sources.