A method of providing fuel cell start-up without battery derived
compressor power is provided. The method includes introducing hydrogen to
the anode inlet of a fuel cell stack previously purged with air. The
introduced hydrogen in the anode channels and the existing air in the
cathode channels generate a small amount of voltage to begin to drive the
air compressor. As additional air is introduced into the cathode channels
by the slowly starting compressor, the fuel cell stack produces more
voltage until the system is producing sufficient net power to operate
under normal run control conditions.