Abstract
This research introduces a high step-up DC-DC converter for renewable energy sources (RESs) that has lower voltage stress on its single switch. With one linked coupled inductor (CI), a quadratic boost converter plus a couple of multiplier units are utilized as circuits for primary and secondary, respectively. The energy from the leakage inductance can be recycled, increasing efficiency and reducing voltage stress. The proposed converter has a higher voltage gain and lower switch stress when compared to similar existing quadratic converter topologies. The operation principles and mathematical analysis of the proposed converter are thoroughly studied. Following that, a comparison of several structures is presented. Finally, simulation results of PSCAD software are shown to further verify the theoretical study.
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