“…Some advantages of using fuel cells can be summarized as: comparatively high efficiency [1], low pollution, a wide range of fuels that can be used in fuel cells, suitable for different applications such as fuel cell/supercapacitor vehicles [2], plug-in hybrid electric vehicles [3], stand-alone hybrid photovoltaic-diesel-battery-fuel cell power systems [4] and distributed generation (DG) [5] because of being available different types of fuel cells with different size and mechanism, and the ability of using again exhaust heat [6]. Literature survey shows that the topics related to fuel cells basically began by modeling of the different types of fuel cells such as proton exchange membrane (PEM) fuel cell modeling for embedded applications [7] and modeling of a direct ethanol fuel cell [8]. Most of the researches on fuel cells modeling have provided some models to estimate the chemical reactions occurring inside fuel cells.…”