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Optimal control strategies for hydrogen production when coupling solid oxide electrolysers with intermittent renewable energies

Cai, Q, Adjiman, CS and Brandon, NP (2014) Optimal control strategies for hydrogen production when coupling solid oxide electrolysers with intermittent renewable energies Journal of Power Sources, 268. pp. 212-224.

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Abstract

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.

Item Type: Article
Authors :
NameEmailORCID
Cai, Qq.cai@surrey.ac.ukUNSPECIFIED
Adjiman, CSUNSPECIFIEDUNSPECIFIED
Brandon, NPUNSPECIFIEDUNSPECIFIED
Date : 15 December 2014
Identification Number : https://doi.org/10.1016/j.jpowsour.2014.06.028
Uncontrolled Keywords : Hydrogen production, Solid oxide electrolysers, Dynamic model, Optimal control
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:17
Last Modified : 17 May 2017 15:10
URI: http://epubs.surrey.ac.uk/id/eprint/838656

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