Evaluation of DC-DC Resonant Converters for Solar Hydrogen Production Based on Load Current Characteristics

Hydrogen is a sustainable fuel option and one of the potential solutions for current energy and environmental problems. Its eco-friendly production is really crucial for better environment and sustainable development. Renewables are an emissions-free way to produce hydrogen, and, conversely, hydrogen offers a way for renewables to generate transportation fuel and reliable power. Solar energy is potentially the most abundant renewable energy resource available to us and hydrogen production from solar energy is considered to be the ultimate solution for sustainable energy. In this paper resonant DC-DC converters are analysed based on their load current characteristics. They act as interface between PV module and electrolysis cell for hydrogen production, and they ensure that electrolysis cell is gained by constant current. Resonant DC-DC converters are attractive because they can carry limited amount of energy during switching cycle thus acting as current source and also they have inherent short circuit protection. With proper topology and design of DC-DC converter better efficiency of PV- hydrogen production system can be achieved.