POWER CONTROLLING METHOD OF FUEL CELL AND FUEL CELL SYSTEM

摘要

PURPOSE: A power controlling method of a fuel cell is provided to stably supply load demand electricity according to output voltage of first and second fuel cells, to prevent the damage of a fuel cell, and to improve operating efficiency of whole system. CONSTITUTION: A power controlling method of a fuel cell comprises the steps of: a sensing step(S54) for sensing each output voltage; a judge step(S60,S64) whether the output voltage of the first and second fuel cells is within a lowest voltage range or not; and a control step(S62,S66) in which when the output voltage of the first and second fuel cells is lowest voltage, the fuel cell outputting the lowest voltage is not operated and the other fuel cell supplies d demand electricity.