Interactions between fuel cells and power converters: Influence of current harmonics on a fuel cell stack

As fuel cells are likely to be used in many future applications, dedicated power converters must be developed and optimized. A thorough knowledge of the fuel cell operation is thus required for power electronics engineers. This paper proposes a theoretical and experimental study of the behavior of a fuel cell stack subject to current harmonies. The fundamental role of the internal double layer capacitor is demonstrated.