Author(s): Zehra Ural, Muhsin Tunay Genolu, Bilal Gm
In the near future, some fuel cell systems could be an accessible and attractive alternative to conventional electricity generation and vehicle drives. The polymer electrolyte membrane (interchangeably called proton exchange membrane, PEM) fuel cell systems can be made in mW to kW capacities; hence a wide range of applications can be covered by this type of fuel cell. This is a major advantage of this type of fuel cell, because once the technology was developed it can be more or less easily scaled up or down for various applications. PEM fuel cell has attracted a great deal of attention as a potential power source for automobile and stationary applications due to its low temperature of operation, high power density and high energy conversion efficiency. Great progress has been made over the past twenty years in the development of PEM fuel cell technology. However, there are still several technical challenges that need to be addressed before commercialization of PEM fuel cell. In this study, the dynamics of a polymer electrolyte membrane fuel cell system is modelled, simulated and presented. Matlab –Simulink TM is used for the modeling and simulation of the fuel cell system. The fuel cell system model consists of the dynamics of reactant flow, fuel cell model and power conditioning units. Also, characteristic of 1.2 W PEM fuel cell system is obtained by experiments. Simulation and experimental results are presented in this paper. The analyses of grid connected or stand alone applications of PEM fuel cell generator system can be achieved with this dynamic simulation model.