Mathematical Modeling and Thermal Control of a 1.5 kW Reversible Solid Oxide Stack for 24/7 Hydrogen Plants

Hector del Pozo Gonzalez (), Marc Torrell, Lucile Bernadet, Fernando D. Bianchi, Lluís Trilla, Albert Tarancón and Jose Luis Domínguez-García
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Hector del Pozo Gonzalez: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 2 a pl., 08930 Sant Adrià de Besòs, Spain
Marc Torrell: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 2 a pl., 08930 Sant Adrià de Besòs, Spain
Lucile Bernadet: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 2 a pl., 08930 Sant Adrià de Besòs, Spain
Fernando D. Bianchi: Instituto Tecnológico Buenos Aires (ITBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Iguazú 341, Buenos Aires C1437, Argentina
Lluís Trilla: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 2 a pl., 08930 Sant Adrià de Besòs, Spain
Albert Tarancón: Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
Jose Luis Domínguez-García: Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, 2 a pl., 08930 Sant Adrià de Besòs, Spain

Mathematics, 2023, vol. 11, issue 2, 1-18

Abstract: Solid oxide technology has gained importance due to its higher efficiencies compared to other current hydrogen technologies. The reversible mode allows working with both technologies (SOEC-SOFC), which makes it very attractive for mixed operations, both storage and generation, increasing its usage and therefore the viability of the technology implementation. To improve the performance of reversible stacks, developing adequate control strategies is of great importance. In order to design these strategies, suitable models are needed. These control-oriented models should be simple for an efficient controller design, but also they should include all phenomena that can be affected by the control law. This article introduces a control-oriented modeling of a reversible solid oxide stack (rSOS) for the implementation of control strategies considering thermal and degradation effects. The model is validated with experimental data of a 1.5 kW laboratory prototype, analyzing both polarization curves and dynamic responses to different current profiles and compositions. An error of less than 3% between the model and experimental responses has been obtained, demonstrating the validity of the proposed control-oriented model. The proposed model allows performing new and deeper analysis of the role of reversible solid oxide cells in 24/7 generation plants with renewable energy sources.

Keywords: reversible solid oxide cells (rSOC); mathematical modeling; control-oriented modeling; thermal safety; hydrogen; stack degradation; experimental rSOC; solid oxide fuel cells; solid oxide electrolyzer (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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