FUEL CELL SYSTEM AND METHOD FOR PURGING A FUEL CELL SYSTEM

The present invention relates to a method for adjusting an operating mode of a fuel cell system (1) comprising: at least one fuel cell stack (2) having an anode portion (3) and a cathode portion (4); an anode supply line (5) for conveying fuel from a fuel source (6) to the anode portion (3); a fuel supply device (7) for supplying the fuel in the anode supply line (5) to the anode portion (3); an anode discharge line (8) for discharging anode exhaust gas from the anode portion (3) into the environment; and a purge unit (9) for purging the anode portion (3); said method comprising the steps of: determining a purge start time and/or a purge duration in which the anode portion (3) is intended to be purged by the purge unit (9); and shifting the fuel supply device (7) from a normal operation into a fuel-supply operation specific to the purge operation on the basis of the determined purge start time point and/or purge duration, wherein the shifting into the fuel-supply operation specific to the purge operation is c