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DC/DC converter topologies for electrolyzers: State-of-the-art and remaining key issues

Abstract : In recent years, the use of electrolyzers to produce cleanly and efficiently hydrogen from renewable energy sources (i.e. wind turbines, photovoltaic) has taken advantage of a growing interest from researchers and industrial. Similarly to fuel cells, DC/DC converters are needed to interface the DC bus with the electrolyzer. Usually, electrolyzers require a low DC voltage to produce hydrogen from water. For this reason, a DC/DC buck converter is generally used for this purpose. However, other DC/DC converter topologies can be used depending on the feature of the electrolyzer and electrical grid as well. The main purpose of this paper is to present the current state-of-the-art of DC/DC converter topologies which can be combined with electrolyzers. The different DC/DC converter topologies are compared in terms of output current ripple reduction, conversion ratio, energy efficiency, and power switch fault-tolerance. Besides, remarks on the state-of-the-art and remaining key issues regarding DC/DC converters are provided.
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Submitted on : Tuesday, September 12, 2017 - 8:27:43 PM
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Damien Guilbert, Stefania Maria Collura, Angel Scipioni. DC/DC converter topologies for electrolyzers: State-of-the-art and remaining key issues. International Journal of Hydrogen Energy, 2017, 42 (38), ⟨10.1016/j.ijhydene.2017.07.174⟩. ⟨hal-01586441⟩



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