A large step down buck converter for small scale hydrogen generation

Abstract

This paper presents a large step-down buck converter topology employing a coupled inductor and a singles-witch configuration to achieve efficient step-down voltage conversion with an extended conversion ratio. The proposed architecture mitigates the limitations of conventional buck converters by leveraging a coupled inductor to enhance voltage gain while maintaining a moderate duty cycle, thereby reducing conduction and switching losses. The developed single-switch topology is validated using MATLAB Simulation and comprehensive theoretical analysis is conducted, including steady-state operation, voltage gain expression, and component stress evaluation representing hydrogen electrolyser as resistive load in steady state