Air Supply State Model For a Proton Exchange Membrane Fuel Cell Control

This work aims to develop a state model for a proton exchange membrane fuel cell (PEMFC) system control. In this model, the air supply dynamic will be analyzed. The air is assumed to be compressible and the different elements in the model are the inlet and outlet manifolds, the flow resistance and the parameters of the compressor. This model is described by the following variables: the inlet manifold pressure, the outlet manifold pressure, the compressor voltage, the stack current and the outlet valve control voltage. The effect of the oxygen partial pressure on the system´s behavior (stack voltage,...) is analyzed and validated on a 600 W power PEMFC fuel experimental data. The model results fit well with the experiment and it will help to optimize the stack net power.