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In this paper, equivalent electric circuit models of a commercial 1.2-kW proton exchange membrane (PEM) fuel cell stack are proposed based on AC impedance studies. The PEM fuel cell stack was operated using room air and pure hydrogen (99.995%). Using electrochemical impedance spectroscopy (EIS) technique, impedance data were collected in the laboratory under various loading conditions. Impedance data...
In this paper, in order to design an optimal power conditioning system (PCS) for fuel cell (FC) application, nonlinear and dynamic characteristics of fuel cell are modeled. And design considerations, such as power semiconductor switches, capacitor and inductor, for optimal design of FC-PCS are deduced form comparative analysis of ideal dc source and fuel cell characteristic model. And co-simulation...
A low temperature Proton Exchange Membrane Fuel Cell (PEMFC) system, fueled by natural gas is proposed and its performance is investigated by establishing a thermodynamic model of integral approach using energy and species mass conservation in addition to chemical and thermal equilibrium and electrochemical principals. Adiabatic cell reactions with temperature changes are assumed. Activation, ohmic...
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