Solid oxide electrolysis cells (SOEC) can play important roles in integrated energy systems (IES) as the hydrogen production hub and the resilience energy hub. When tied to a microgrid with high renewable penetration, the SOEC is subjected to rapid load transitions in response to the intermittent renewable generations that occur not only in diurnal cycles but also in short timeframes (e.g., sub-minute). The cyber-physical simulation approach can derisk operability research but requires a real-time dynamic SOEC model. In the present work, a real-time multiphysics model for pressurized SOEC is developed and validated in the pressure range from 1.4 to 8bar. Further, the accuracy of the single repeating unit (SRU) assumption in SOEC stack simulation is quantified. A guidance of more than 45 cells in one SOEC stack is recommended to safely apply the SRU assumption. Modeling results suggest that at a given current density, more power is consumed by SOEC at elevated operating pressures. The anode air and cathode stream have major impacts on thermal management, highlighting the potential benefit of integrating SOEC with other thermal processes in IES. To achieve high hydrogen production efficiency, the SOEC could operate at the maximum endothermic point to maximize the use of thermal energy. The real-time execution of the developed SOEC model is also demonstrated, which only takes 0.1% of the fixed time step of 5ms. The developed model establishes the basis for cyber-physical simulation of SOEC hybrid systems.
Zhang, Biao, et al. "A real-time multiphysics model of a pressurized solid oxide electrolysis cell (SOEC) for cyber-physical simulation." Energy Conversion and Management, vol. 298, Oct. 2023. https://doi.org/10.1016/j.enconman.2023.117778
Zhang, Biao, Harun, Nor Farida, Zhou, Nana, Colon-Rodriguez, Jose J., Oryshchyn, Danylo, Shadle, Lawrence, Tucker, David, & Bayham, Samuel (2023). A real-time multiphysics model of a pressurized solid oxide electrolysis cell (SOEC) for cyber-physical simulation. Energy Conversion and Management, 298. https://doi.org/10.1016/j.enconman.2023.117778
Zhang, Biao, Harun, Nor Farida, Zhou, Nana, et al., "A real-time multiphysics model of a pressurized solid oxide electrolysis cell (SOEC) for cyber-physical simulation," Energy Conversion and Management 298 (2023), https://doi.org/10.1016/j.enconman.2023.117778
@article{osti_2461612,
author = {Zhang, Biao and Harun, Nor Farida and Zhou, Nana and Colon-Rodriguez, Jose J. and Oryshchyn, Danylo and Shadle, Lawrence and Tucker, David and Bayham, Samuel},
title = {A real-time multiphysics model of a pressurized solid oxide electrolysis cell (SOEC) for cyber-physical simulation},
annote = {Solid oxide electrolysis cells (SOEC) can play important roles in integrated energy systems (IES) as the hydrogen production hub and the resilience energy hub. When tied to a microgrid with high renewable penetration, the SOEC is subjected to rapid load transitions in response to the intermittent renewable generations that occur not only in diurnal cycles but also in short timeframes (e.g., sub-minute). The cyber-physical simulation approach can derisk operability research but requires a real-time dynamic SOEC model. In the present work, a real-time multiphysics model for pressurized SOEC is developed and validated in the pressure range from 1.4 to 8bar. Further, the accuracy of the single repeating unit (SRU) assumption in SOEC stack simulation is quantified. A guidance of more than 45 cells in one SOEC stack is recommended to safely apply the SRU assumption. Modeling results suggest that at a given current density, more power is consumed by SOEC at elevated operating pressures. The anode air and cathode stream have major impacts on thermal management, highlighting the potential benefit of integrating SOEC with other thermal processes in IES. To achieve high hydrogen production efficiency, the SOEC could operate at the maximum endothermic point to maximize the use of thermal energy. The real-time execution of the developed SOEC model is also demonstrated, which only takes 0.1% of the fixed time step of 5ms. The developed model establishes the basis for cyber-physical simulation of SOEC hybrid systems.},
doi = {10.1016/j.enconman.2023.117778},
url = {https://www.osti.gov/biblio/2461612},
journal = {Energy Conversion and Management},
issn = {ISSN 0196-8904},
volume = {298},
place = {United States},
publisher = {Elsevier},
year = {2023},
month = {10}}
Hughes, Dimitri; Wepfer, William J.; Davies, Kevin
ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainabilityhttps://doi.org/10.1115/FuelCell2011-54591