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

Povzetek

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.

Ključne besede

low temperature PEM fuel cells;performance modelling;liquid water dynamics;physically motivated model;transient operation validation;virtual observers;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 532:621.352.6
COBISS: 110908675 Povezava se bo odprla v novem oknu
ISSN: 0378-7753
Št. ogledov: 95
Št. prenosov: 49
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: nizko-temperaturne PEM gorivne celice;modeliranje zmogljivosti;dinamika tekoče vode;fizikalno osnovan model;validiranje delovanja s prehodnimi pojavi;virtualna tipala;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-16
Zvezek: ǂVol. ǂ541
Čas izdaje: Sep. 2022
DOI: 10.1016/j.jpowsour.2022.231598
ID: 15574437