Stability analysis of solid oxide fuel cell systems
Document typeConference report
Rights accessOpen Access
Solid oxide fuel cells (SOFC), with entirely solid structure and high operating temperatures, have attracted research interest in recent years. Unlike other types of fuel cells, low electrode corrosion and low electrolyte looses are assumed due to its solid structure. Furthermore, the high operating temperatures enable SOFC to reach up to 50% to 65% efficiency with excellent impurity tolerance. However, there are several degradation mechanisms in SOFC, such as electrode delamination, electrolyte cracking, electrode poisoning, etc. Most of these degradations are related with the operation conditions, which can be optimized by appropriate control. Since most control algorithms are developed based on the mathematical models, it is important to obtain SOFC control-oriented models. Therefore, this paper aims to develop a SOFC control-oriented model, including the dynamics of inlet manifold, SOFC stack and outlet manifold. Moreover, equilibrium points are characterized and a stability around these equilibrium points analysis is performed. This information can provide guidelines for control strategies design.
CitationXing, Y.; Costa-Castelló, R.; Jing, N. Stability analysis of solid oxide fuel cell systems. A: Iberian Syposium on Hydrogen, Fuel Cells and Advanced Batteries. "VII Symposium on Hydrogen, Fuel Cells and Advanced Batteries". 2019, p. 1-3.