FUEL CELL VEHICLE AND A METHOD OF CONTROLLING THE SAME

A fuel cell vehicle includes a battery, a cell stack configured to supply a stack voltage, a multiphase converter configured to adjust a voltage range between the cell stack and the battery. The multiphase converter includes a plurality of current paths connected to the cell stack. The fuel cell vehicle further includes a main controller configured to, for measurement of impedance of the cell stack, control the multiphase converter to allow an alternating current to flow along an auxiliary path rather than a main path used to adjust the voltage range among the plurality of current paths.