The present disclosure relates to a motor drive system comprising: a fuel cell; a motor, electrically connected to the fuel cell; and, a cryogenic system arranged to contain a cryogen, wherein the fuel cell is arranged to output current to the motor, and wherein the cryogenic system is arranged to communicate a cryogen from the cryogenic system to the fuel cell.

A fuel cell system in which a fuel cell is coupled to a motor driving battery and a vehicular auxiliary machine is coupled to the motor driving battery via a first voltage converter, the fuel cell system including a fuel cell auxiliary machine coupled to the first voltage converter; and a second voltage converter that couples the fuel cell auxiliary machine to the fuel cell.

A fuel cell system in which a fuel cell is coupled to a motor driving battery and a vehicular auxiliary machine is coupled to the motor driving battery via a first voltage converter, the fuel cell system including a fuel cell auxiliary machine coupled to the first voltage converter; and a second voltage converter that couples the fuel cell auxiliary machine to the fuel cell.

A mobile hydrogen fueling system for use in fueling mobile hydrogen vehicles includes: a towing vehicle with a hydrogen powered fuel cell that powers the towing vehicle, and a trailer. The trailer includes a hydrogen storage tank, a hydrogen fuel transport device such as a gas compressor or a liquid pump, and a dispenser attached to the hydrogen tank that dispenses hydrogen to a receiving hydrogen tank. A controller regulates the hydrogen fuel transport device and thus the flow of hydrogen that the dispenser dispenses.

A mobile hydrogen fueling system for use in fueling mobile hydrogen vehicles includes: a towing vehicle with a hydrogen powered fuel cell that powers the towing vehicle, and a trailer. The trailer includes a hydrogen storage tank, a hydrogen fuel transport device such as a gas compressor or a liquid pump, and a dispenser attached to the hydrogen tank that dispenses hydrogen to a receiving hydrogen tank. A controller regulates the hydrogen fuel transport device and thus the flow of hydrogen that the dispenser dispenses.

A power supply device includes: a main body configured mountable to a roof of a vehicle; a tank insertion hole formed in the main body for detachable insertion of a hydrogen tank; a fuel cell stack provided inside the main body and configured to generate electricity by being supplied with hydrogen from the hydrogen tank attached to the main body; and an output section provided on an outer face of the main body to output power generated by the fuel cell stack.

A power supply device includes: a main body configured mountable to a roof of a vehicle; a tank insertion hole formed in the main body for detachable insertion of a hydrogen tank; a fuel cell stack provided inside the main body and configured to generate electricity by being supplied with hydrogen from the hydrogen tank attached to the main body; and an output section provided on an outer face of the main body to output power generated by the fuel cell stack.

The invention relates to a utility vehicle (IO), preferably a truck, comprising a structure (22) or trailer (46) having a consumer (20) and a fuel cell device (12). The fuel cell device (12) is designed to be connectable as a range extender of the utility vehicle (IO) and to supply the consumer (20) with electrical power and/or waste heat.

The invention relates to a utility vehicle (IO), preferably a truck, comprising a structure (22) or trailer (46) having a consumer (20) and a fuel cell device (12). The fuel cell device (12) is designed to be connectable as a range extender of the utility vehicle (IO) and to supply the consumer (20) with electrical power and/or waste heat.

A motor driving control method for controlling a motor speed so that a speed measured value of a motor follows a speed command value is provided. The method includes driving the motor by repeating an on section where a torque is generated in the motor and an off section where a torque is not generated in the motor at a regular period, based on the speed command value, wherein the driving includes applying a phase voltage to only one of multiple phases of the motor in the on section by a pulse width modulation scheme.