期刊
JOURNAL OF POWER SOURCES
卷 268, 期 -, 页码 212-224出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.06.028
关键词
Hydrogen production; Intermittent renewable energies; Solid oxide electrolysers; Dynamic model; Optimal control
资金
- EPSRC (Engineering and Physical Sciences Research Council of UK) [EACPR PS0693]
- EPSRC [EP/J003840/1, EP/J016454/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J016454/1, EP/J003840/1] Funding Source: researchfish
The penetration of intermittent renewable energies requires the development of energy storage technologies. High temperature electrolysis using solid oxide electrolyser cells (SOECs) as a potential energy storage technology, provides the prospect of a cost-effective and energy efficient route to clean hydrogen production. The development of optimal control strategies when SOEC systems are coupled with intermittent renewable energies is discussed. Hydrogen production is examined in relation to energy consumption. Control strategies considered include maximizing hydrogen production, minimizing SOEC energy consumption and minimizing compressor energy consumption. Optimal control trajectories of the operating variables over a given period of time show feasible control for the chosen situations. Temperature control of the SOEC stack is ensured via constraints on the overall temperature difference across the cell and the local temperature gradient within the SOEC stack, to link materials properties with system performance; these constraints are successfully managed. The relative merits of the optimal control strategies are analyzed. (C) 2014 Elsevier B.V. All rights reserved.
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