Publication
Dynamic modelling of alkaline self-pressurized electrolyzers: a phenomenological-based semiphysical approach
Journal Article (2020)
Journal
International Journal of Hydrogen Energy
Pages
22394-22407
Volume
45
Number
43
Doc link
https://doi.org/10.1016/j.ijhydene.2020.06.038
File
Authors
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David, Martín Rafael
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Alvarez Zapata, Hernán Darío
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Ocampo Martínez, Carlos A.
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Sánchez Peña, Ricardo
Projects associated
Abstract
This paper proposes a phenomenological based semiphysical model (PBSM) for a self-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 in the 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 model parameters have been adjusted based on experimental measurements taken from an available prototype and through a suitable identication process. Simulation results replicate the current dynamic response of the experimental self-pressurized electrolyzer assembly. This model proves to be useful in the improvement of the control of gas production rate in this kind of assemblies, both as a validated simulation platform and as a source of reduced order models for model-based control design.
Categories
power generation control.
Author keywords
Hydrogen, Alkaline electrolysis, Dynamic modelling
Scientific reference
M.R. David, H. Alvarez, C. Ocampo-Martínez and R. Sánchez-Peña. Dynamic modelling of alkaline self-pressurized electrolyzers: a phenomenological-based semiphysical approach. International Journal of Hydrogen Energy, 45(43): 22394-22407, 2020.
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