FUEL CELL APPARATUS AND METHOD OF CONTROLLING THE SAME

A fuel cell apparatus includes: a fuel cell unit configured to generate a first voltage; a battery configured to store a second voltage having a higher level than the first voltage; a first voltage level conversion unit configured to boost the first voltage and supply the boosted voltage to the battery in response to a first control signal; a second voltage level conversion unit configured to step down the second voltage and supply the stepped-down voltage to the fuel cell unit in response to a second control signal; and a controller configured to generate the first control signal and the second control signal in response to a start command or a stop command.