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Modeling and Constraint-Aware Control of Pressure Dynamics in Water Electrolysis Systems

2025/05/22 by Mostafaali Ayubirad, Ayubirad, Mostafaali, Muhammad Akbar +3 · 1 citation
Energy · Engineering · #FOS: Electrical engineering #Fuel Cells and Related Materials #Hybrid Renewable Energy Systems #Integrated Energy Systems Optimization #Systems and Control (eess.SY) #electronic engineering #information engineering

paper · pdf · doi:10.48550/arxiv.2505.16935

openalex publication_date 2025/05/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This paper addresses the challenge of pressure constraint violations in water electrolysis systems operating under dynamic power conditions, a problem common to both Proton Exchange Membrane and alkaline technologies. To investigate this issue, a control-oriented model of an alkaline electrolyzer is developed, capturing key pressure and flow dynamics. To manage rapid power fluctuations that may cause pressure to exceed manufacturer-defined operational boundaries, a model-based constraint-aware power governor based on the Reference Governor (RG) framework is proposed. Simulation results show that the strategy effectively maintains pressure within the specified operating range, outperforming conventional filtering methods while enhancing hydrogen production and reducing auxiliary energy consumption.

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