Articles techniques et présentations

Air breathing proton exchange membrane fuel cells have now found its use in wide range of domestic and commercial energy based applications. Optimization of Proton Exchange Membrane Fuel Cell system parameters and its safer operation under dynamic conditions ensure higher system output and longer device lifetime. Ensuring safety against oxygen starvation reduces the degradation of membrane electrode assembly . PEM Fuel Cell performance optimization and safety against oxygen starvation requires efficient estimation and precise control of air supply subsystem state variables. The FEM based fuel cell modeling gives further insight regarding the degree of oxygen starvation in PEMFC. The qualitative membrane degradation threat occurring during oxygen starvation under varying environmental humidity is estimated here.