METHOD FOR OPERATING A PEM FUEL CELL SYSTEM AND CORRESPONDING PEM FUEL CELL SYSTEM

摘要

The method involves using a compressor with a moisturizing function to provide sufficient unmoisturized oxidant. The compressor operates at very low pressure and the oxidant moisturizing corresponds approximately to the dew point at the cooling water outlet temperature. If adequate moisturizing of the oxidant is no longer occurring at the defined low pressure the input pressure is increased and the oxidant output is choked in a regulated manner. AN Independent claim is also included for the following: a Polymer Electrolyte Membrane or PEM fuel cell system.