RT journal article
T1 Small-signal admittance electrolyser circuit model for stability studies of multi-energy DC grid-connected hydrogen systems
A1 Cartiel Arasa, Oriol
A1 Mesas García, Juan José
A1 Horrillo Quintero, Pablo
A1 García Triviño, Pablo
A1 Sarrias Mena, Raúl
A1 Sainz Sapera, Luis
A1 Fernández Ramírez, Luis Miguel
A2 Ingeniería Eléctrica
A2 Ingeniería en AutomáticaElectrónica, Arquitectura y Redes de Computadores
K1 Electrolyser
K1 Hydrogen storage systems
K1 Multi-energy DC grids
K1 Positive-mode-damping stability criterio
K1 Small-signal admittance-based model
AB Renewable energies are increasingly being used as net-zero carbon power suppliers, replacing fossil fuels. Simultaneously, energy storage systems are emerging as complementary solutions to the intermittent and uncertain nature of these energies. In particular, hydrogen storage systems are being noticed as a promising option for future multi-energy DC power systems. One of the primary research topics regarding hydrogen storage systems is the prediction of system instabilities caused by interactions between DC grids and electrolyser and fuel cell DC/DC converters when hydrogen storage systems are connected. Frequency-domain methods are the most suitable to assess stability in large multi-energy DC power systems. Notably, the positive-mode-damping stability criterion is a friendly frequency-domain method that offers several benefits over techniques such as the generalised Nyquist criterion. The present paper contributes a small-signal admittance-based model of the electrolyser circuit of hydrogen storage systems. Using the proposed model, it analyses the resonance and the damping frequency regions of electrolyser circuits of hydrogen storage systems, and studies the influence of electrolyser circuit and multi-energy DC grid parameters on oscillatory instabilities by the positive-mode-damping stability criterion. The model and stability results are validated using MATLAB/Simulink time-domain and OPAL-RT (OPAL-RT4512) real-time simulations.
PB Elsevier Ltd.
SN 0142-0615
YR 2025
FD 2025
LK http://hdl.handle.net/10498/37057
UL http://hdl.handle.net/10498/37057
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-may-2026