PEM Fuel Cell Dynamic Modeling Based On Transfer Functions

As a clean energy conversion device and due to its important autonomy, and its great efficiency, fuel cells use has become increasingly widespread. However, the modelling of fuel cell sources is very complicated since it is a multivariable system. Several models that exist in the literature focus has been on describing the steady state characteristics of fuel cells. However, the use of the fuel cell for mobile applications requires knowledge of the dynamic behavior of the fuel cell. Several models to characterize fuel cell behavior are examined. In this paper, a complete modeling of the fuel cell system is proposed based on simplified electrochemical equations and trnasfer functions. The simplified model shows good good agreement with the experimental data.