Work

Fault Ride-Through for Hydrogen Electrolyzers

Year: 2025

Type: conference-paper

Abstract: This paper investigates the Fault Ride-Through (FRT) capability of a Proton Exchange Membrane (PEM) electrolyzer system supported by Supercapacitor (SC) energy storage under symmetrical fault conditions. Three configurations are analyzed: a baseline case without SC integration, SCs directly connected to the DC link, and SCs interfaced via a DC/DC converter. To evaluate the system behavior under these configurations, a dynamic model of the PEM electrolyzer is implemented to capture its transient response. Based on this model, analytical formulas are derived for sizing the energy buffer required to maintain continuous operation during grid disturbances. In parallel, a unified control strategy is proposed to coordinate power flow between the grid, SCs, and the electrolyzer. Time-domain simulations confirm that only the SC-supported configurations maintain uninterrupted hydrogen production during a severe grid voltage sag. The DC/DC-based layout reduces the number of SCs and offers greater control flexibility, while the direct connection provides a simpler solution. These results provide design insight for the robust integration of hydrogen systems into future power grids.

Source: IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)

DOI: 10.1109/isgteurope64741.2025.11305611

Authors: Mohammadhossein Tavanaee, Marc Cheah-Mañe, Oriol Gomis-Bellmunt, Eduardo Prieto-Araujo

Institution: Universitat Politècnica de Catalunya

Language: English

Topic: Hybrid Renewable Energy Systems

Subfield: Energy Engineering and Power Technology

Field: Energy

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: HORIZON EUROPE Framework Programme