CONICET | Buscador de Institutos y Recursos Humanos

This paper proposes a phenomenological based semiphysical model (PBSM) for aself-pressurized alkaline electrolyzer. The model, based on mass and energy balances,represents the dynamic behavior of hydrogen and oxygen production using electrolysis.The model allows to anticipate operational variables as dynamic responses inthe concentrations of the electrolytic cell, and variations in both, level and pressure,at the gas separation chambers due to the change in electric current. The modelparameters have been adjusted based on experimental measurements taken froman available prototype and through a suitable identication process. Simulationresults replicate the current dynamic response of the experimental self-pressurizedelectrolyzer assembly. This model proves to be useful in the improvement of thecontrol of gas production rate in this kind of assemblies, both as a validated simulationplatform and as a source of reduced order models for model-based controldesign.

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