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Real-time capable transient model of liquid water dynamics in proton exchange membrane fuel cellsKravos, Andraž, strojnik ...Optimal control of liquid water dynamics plays an instrumental role in achieving optimised performance and prolonged lifetime of PEM Fuel Cells (PEMFC). Tackling these challenges calls for precise ... on-line monitoring and control tools such as coupled virtual observers taking into consideration also liquid water dynamics. The latter proves to be especially challenging to model due to varying retention and removal rates of liquid and gaseous water depending on the operating conditions thus representing a longstanding knowledge gap. To fill this gap, this contribution presents derivation of a 1D+1D system level physically motivated two-phase model of PEMFC, which enables consistent treatment of liquid water dynamics on the system level in all seven most influential regions of the PEMFC, namely membrane, anode and cathode channels, GDLs, and catalyst layers, while exhibiting real-time readiness with real-time factor of 0.0449. The model is extensively tested on single-cell data, which consists of five sets of experiments with different operating regimes and durations. Overall results exhibit good agreement with experimental data in all of the performed tests with R2 factors larger than 0.95. Newly developed features of the model enable its use in development of advanced control methodologies and hardware-in-the-loop as well as digital twin applications.Source: Journal of power sources. - ISSN 0378-7753 (Vol. 541, Sep. 2022, str. 1-16)Type of material - article, component partPublish date - 2022Language - englishCOBISS.SI-ID - 110908675
Author
Kravos, Andraž, strojnik |
Kregar, Ambrož, 1987- |
Penga, Željko |
Barbir, Frano, 1954- |
Katrašnik, Tomaž
Topics
low temperature PEM fuel cells |
performance modelling |
liquid water dynamics |
physically motivated model |
transient operation validation |
virtual observers |
nizko-temperaturne PEM gorivne celice |
modeliranje zmogljivosti |
dinamika tekoče vode |
fizikalno osnovan model |
validiranje delovanja s prehodnimi pojavi |
virtualna tipala
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Database name | Field | Year |
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Kravos, Andraž, strojnik | 55317 |
Kregar, Ambrož, 1987- | 34443 |
Penga, Željko | |
Barbir, Frano, 1954- | |
Katrašnik, Tomaž | 23468 |
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