Fuel cell system and method of controlling the same

A fuel cell system comprising:

• a reformer to generate a fuel gas through a reforming reaction;
• a carbon monoxide purifier comprising a reactor main body having an inlet into which a reformed fuel gas is introduced and an outlet through which a purified fuel gas is discharged, and an oxidation catalyst bed that is filled in the reactor main body, and to reduce a concentration of carbon monoxide included in the fuel gas generated from the reformer;
• at least one electricity generator supplied with the fuel gas from the carbon monoxide purifier to generate electricity by means of a chemical reaction;
• and
• a catalyst supply to generate catalyst particles from material and to supply the catalyst particles to the oxidation catalyst bed, the catalyst supply including a catalyst particle generator which heats the material to generate the catalyst particles,
• wherein:
• the catalyst particle generator comprises a generator main body having an outlet on one side thereof, so as to allow the catalyst particles to be discharged, a heating plate which is installed in the generator main body and on which the material is placed, and a heating element which heats the material placed on the heating plate;
• and
• the catalyst supply further comprises a catalyst supply pipe which guides the catalyst particles discharged through the catalyst outlet to the carbon monoxide purifier.