Macroscopic Model of Solid Oxide Fuel Cell Stack for Integrating in a Generator Simulation

Moussa Chnani (1) , Marie-Cécile Péra (1) , Raynal Glises (1) , J.M. Kauffmann (1)

1 L2ES - Laboratoire de recherche en Electronique, Electrotechnique et Systèmes

This paper presents a macroscopic model of solid oxide fuel cell (SOFC) with the aim to perform a simulation of the whole generator. Three sub-models have been developed to take into fluidic, thermal and electrical phenomena. The fluidic sub-model is based on an equivalent circuit based on electrical analogy. Pressure drops in channels are modelled by resistances and the fluid accumulation in the volume is modelled by capacitor. Each electrode compartment (channel+electrode) is represented by two resistances and one capacitor. We have used this model to calculate the pressure at the catalytic sites and gas flows at fuel cell input and output. The electrical response is based on the classical Nernst potential equation, activation, ohmic and concentration overvoltages. The thermal modelling is based on a (2D) nodal network. Two aspects are studied in this article (conduction and the convection heat transfer). Results have been validated on a 5 cell stack.

Mots clés: SOFC; Solid Oxide Fuel Cell; modeling

Domaines: Energie électrique

Moussa Chnani, Marie-Cécile Péra, Raynal Glises, J.M. Kauffmann. Macroscopic Model of Solid Oxide Fuel Cell Stack for Integrating in a Generator Simulation. 7th European SOFC Forum, Jul 2006, Luzern, Switzerland. pp.19. ⟨hal-00582361⟩