Provozní vlastnosti a chránění vodíkových palivových článků

Abstract

This thesis deals with faults of PEM fuel cells and posibilities of their effective protection. In first part of this diploma thesis hydrogen technologies, properties of hydrogen, PEM fuel cells and also the necessary theory are described. Next part of the thesis offers a comparison between fuel cells, photovoltaic cells and accumulators. The next section discusses faults that may occur during the operation of PEM fuel cells and also the effects of operating parameters on the polarisation curve. In the last part, the diploma thesis deals with ways of protecting fuel cells and various protections. There is also a simulation of short circuit current of the fuel cell, which is part of the hydrogen technology laboratory. Finally, the possibilities of fuel cell protection in the laboratory are proposed and a summary of the results of this thesis is made.