Apparatus for controlling fuel cell of environment-friendly vehicle, system including the same, and method thereof

A vehicle system, comprising:

• a sensing device configured to sense at least one of air density, an altitude, or atmospheric pressure;
• and
• a fuel cell controller configured to control an amount of output of a fuel cell in response to a required amount of output of a motor, the amount of output of the fuel cell being varied according to one of the air density, the altitude, or the atmospheric pressure, a current battery state of a high voltage battery, and a drive mode;
• wherein the drive mode incudes an idle mode, a coast regeneration mode, and an accelerating mode.

A method for controlling a fuel cell of an environment-friendly vehicle, the method comprising:

• sensing at least one of air density, an altitude, or atmospheric pressure;
• and
• controlling an amount of output of a fuel cell in response to a required amount of output of a motor, the amount of output of the fuel cell being varied according to one of the air density, the altitude, or the atmospheric pressure, a current battery state of a high voltage battery, and a drive mode;
• wherein the drive mode incudes an idle mode, a coast regeneration mode, and an accelerating mode.