Modelling of PEM Fuel Cell Performance: Steady-State and Dynamic Experimental Validation

Abstract

This paper reports on the modelling of a commercial 1.2 kW proton exchange membrane fuel cell (PEMFC), based on interrelated electrical and thermal models. The electrical model proposed is based on the integration of the thermodynamic and electrochemical phenomena taking place in the FC whilst the thermal model is established from the FC thermal energy balance. The combination of both models makes it possible to predict the FC voltage, based on the current demanded and the ambient temperature. Furthermore, an experimental characterization is conducted and the parameters for the models associated with the FC electrical and thermal performance are obtained. The models are implemented in Matlab Simulink and validated in a number of operating environments, for steady-state and dynamic modes alike. In turn, the FC models are validated in an actual microgrid operating environment, through the series connection of 4 PEMFC. The simulations of the models precisely and accurately reproduce the FC electrical and thermal performance.

Key findings

• ▸The electrical model accurately predicted FC voltage based on current and ambient temperature.
• ▸The thermal model was established from the FC thermal energy balance and validated through experimental characterization.
• ▸The models were validated in steady-state and dynamic modes, as well as in an actual microgrid operating environment.

Keywords

Identifiers

DOI

10.3390/en7020670

Journal

Energies

Year

2014