SYSTEM AND METHOD FOR BATTERY CHARGING OF A FUEL CELL PLUG-IN HYBRID VEHICLE HAVING AN ELECTRIC COMPRESSOR OR TURBOCHARGER

A fuel cell plug-in hybrid vehicle includes a fuel cell having an anode side and a cathode side with a compressor connected to the cathode side. An electric motor is drive-connected exclusively to the compressor. A converter is connected electrically on one side to the motor and on the other side to a high-voltage battery. A controller switches the vehicle between two different operating states. In a first operating state, the high-voltage battery supplies electrical power to the motor via the converter so that the electric motor drives the compressor. In a second operating state, an electrical voltage is supplied from a power supply system to the motor or to the converter via a power supply line. The motor can modify the amplitude of the system voltage with the modified voltage present across the converter, which converts the voltage into a DC voltage applied across the high-voltage battery.