PEM fuel cell (FC) operation is likely to be characterized by voltage dips on time scales shorter than 1 s, arising from temporary flooding of gas channels or porous layers, particularly when the FC is operated at high humidity levels. If supercapacitors are employed together with the FC as energy storage systems, they can make up for the temporary lack of energy produced by the FC. However, the steep slopes of the voltage dips affect the energy that can be actually delivered by the supercapacitor because of the frequency dependence of its capacitance, and this should be taken into account in sizing the supercapacitor. In this paper, the supercapacitor response to a FC voltage dip is simulated and discussed, based on an experimentally identified supercapacitor model and a typical voltage dip measured on a single PEM FC.

Response of a hybrid supercapacitor - PEM fuel cell system to fast fuel cell energy dips

TOSCANI, SERGIO;DOTELLI, GIOVANNI;LATORRATA, SAVERIO
2015

Abstract

PEM fuel cell (FC) operation is likely to be characterized by voltage dips on time scales shorter than 1 s, arising from temporary flooding of gas channels or porous layers, particularly when the FC is operated at high humidity levels. If supercapacitors are employed together with the FC as energy storage systems, they can make up for the temporary lack of energy produced by the FC. However, the steep slopes of the voltage dips affect the energy that can be actually delivered by the supercapacitor because of the frequency dependence of its capacitance, and this should be taken into account in sizing the supercapacitor. In this paper, the supercapacitor response to a FC voltage dip is simulated and discussed, based on an experimentally identified supercapacitor model and a typical voltage dip measured on a single PEM FC.
Proceedings of 2015 IEEE Int. Workshop on Applied Measurements for Power Systems
9781479999989
ELETTRICI
supercapacitor model, hybrid supercapacitor, PEM fuel cell system, fast fuel cell energy dips, voltage dips, gas channel flooding, porous layers, energy storage systems
File in questo prodotto:
File Dimensione Formato  
07312740.pdf

Accesso riservato

Descrizione: Articolo principale
: Publisher’s version
Dimensione 709.67 kB
Formato Adobe PDF
709.67 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/985451
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact