Extended model for the dynamic simulation of a PEM fuel cell in stationary applications

In order to improve the system efficiency of a fuel cell system, it is necessary to estimate the influence of a change in the operating conditions on the performance and the life time of the polymer electrolyte fuel cell (PEFC). An existing fuel cell model was fitted in accordance with the measured fuel cell data of the authors to determine the effect of different operating conditions on the behaviour of fuel cell stacks. The effects of changing parameters on the fuel cell power especially under dynamic behaviour and the internal average conditions of the fuel cell, especially the water management, can now be better estimated.