Modeling of the dynamic behavior of a PEM electrolyzer

The modeling of the dynamic behavior of Proton Exchange Membrane (PEM) electrolyzers is a crucial issue to consider when connecting them with renewable energy sources. Indeed, this behavior is strongly dependent on the operating conditions provided by these sources. For this reason, it is important to determine a lot of dynamic models associated with different operating conditions. After a discussion on the modeling issue of the dynamic behavior, an experimental test bench is presented. The methodology is based on polynomial models by using pseudorandom binary sequences as inputs of the PEM electrolyzer in the test bench. A discussion on the obtained models is done to bring out control and aging of PEM electrolyzer perspectives.