A Novel DC-DC Converter for Electrolyzer with Low Ripple and High Step-Down Ratio

Electrolyzers are widely used in Renewable energy hydrogen production, and the performance of electrolyzers is directly related to DC-DC converters. To realize the highefficiency operation of the electrolyzer, new challenges, such as a high step-down ratio and low output current ripple, are put forward for the DC-DC converter. This paper proposes a novel type of DC-DC converter for hydrogen production. The topology is simple and has the advantages of higher step-down gain, zerovoltage switching without additional devices, and low switching stress. In addition, the scheme can achieve ultra-low output current ripple without active devices. Finally, this paper connects the electrolyzer hydrogen production load in the simulation to verify the scheme's effectiveness.