Fuel cell system and corresponding operating method

摘要

A fuel cell system (1) comprises a fuel cell (2) for generating current from oxidant and fuel gases, with current connection(s) (9); a reformer (3), with a catalyst (11) for forming fuel gas from fuel-oxidant mixture (from gas mixer (10)) and a fuel gas outlet (20), connected (19) to the fuel cell anode inlet (5); a line (17) for recirculating anode exhaust gas to the mixer; a lambda -value determining device; and a controller (27) for increasing gas recirculation and the lambda -value during regeneration. An independent claim is included for a corresponding method for regenerating a fuel cell system, involving increasing the amount of recirculation gas (originating from the anode outlet (6) of the fuel cell (2) and fed into the gas mixer (10)) and increasing the lambda -value.