Real-time capable transient model of liquid water dynamics in proton exchange membrane fuel cells

Kravos, Andraž (avtor), Kregar, Ambrož (avtor), Penga, Željko (avtor), Barbir, Frano (avtor), Katrašnik, Tomaž (avtor)

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 R$^2$ 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.

• Jezik: Angleški jezik
• Ključne besede: low temperature PEM fuel cells, performance modelling, liquid water dynamics, physically motivated model, transient operation validation, virtual observers
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo ; PEF - Pedagoška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 16 str.
• Številčenje: Vol. 541, art. 231598
• PID: 20.500.12556/RUL-137253
• UDK: 532:621.352.6
• ISSN pri članku: 0378-7753
• DOI: 10.1016/j.jpowsour.2022.231598
• COBISS.SI-ID: 110908675
• Datum objave v RUL: 08.06.2022

Gradivo je del revije

• Naslov: Journal of power sources
• Skrajšan naslov: J. power sources
• Založnik: Elsevier Sequoia
• ISSN: 0378-7753
• COBISS.SI-ID: 25782784

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nizkotemperaturne PEM gorivne celice, modeliranje zmogljivosti, dinamika tekoče vode, fizikalno osnovani model, validiranje delovanja s prehodnimi pojavi, virtualna tipala