Abstract: A system of a vehicle is introduced. The system may comprise memory storing at least one instruction, and a processor configured to execute the at least one instruction and cause the system to control, based on an operating environment of the vehicle and a state of the fuel cell, a voltage of the fuel cell. The processor may be configured to control the voltage of the fuel cell by determining a correction factor for performing correction on an initial voltage value of the fuel cell, and calculating a voltage value for controlling the fuel cell by performing feedback control. The feedback control may adjust the corrected voltage value using an output error, the output error being a difference between an actual output and a requested output.

Abstract: Disclosed is a method for controlling a fuel cell of a fuel cell vehicle. The method comprises determining a reference output required for restarting or stopping power generation of a fuel cell according to a required output of a vehicle, correcting the reference output based on vehicle driving condition information comprising a vehicle altitude and coolant temperature and degree of degradation of the fuel cell, and restarting or stopping the power generation of the fuel cell based on the corrected reference output.