Abstract: A variable-gauge train control apparatus includes an inverter that collectively controls the torque of main motors; and a voltage control unit that controls an output voltage of the inverter. When at least one of axles to be driven by the main motors is within the gauge conversion section and at least one of the axles is located outside the gauge conversion section, the voltage control unit treats, as a reference frequency, a value obtained by conversion of an average value of rotational frequencies of the axles located outside the gauge conversion section into the electric angular frequencies of the main motors, and adds up a slip frequency command and the reference frequency to provide the frequency of the output voltage of the inverter.

Abstract: A variable-gauge train control apparatus for a variable-gauge train having a gauge variable in a gauge conversion section includes: a plurality of main motors that transmits driving force to axles and wheels; a plurality of inverters that outputs voltage to at least one of the main motors; and voltage control units that control the individual output voltages of the plurality of inverters. Each of the voltage control units corresponds to one of the inverters and, when at least one of the axles to be subjected to the driving force controlled by the corresponding one inverter is within the gauge conversion section, controls the speed of the associated main motors by using, as a speed command value, a train speed converted into a rotational frequency.

Abstract: An electric-vehicle propulsion control system to drive an electric vehicle includes a plurality of motors, an inverter to apply a common voltage to the plurality of motors, and at least one opening/closing unit or opening/closing unit to enable switching between electrical opening and conduction between the inverter and at least one of the motors.

Abstract: A variable-gauge train control apparatus includes an inverter that collectively controls the torque of main motors; and a voltage control unit that controls an output voltage of the inverter. When at least one of axles to be driven by the main motors is within the gauge conversion section and at least one of the axles is located outside the gauge conversion section, the voltage control unit treats, as a reference frequency, a value obtained by conversion of an average value of rotational frequencies of the axles located outside the gauge conversion section into the electric angular frequencies of the main motors, and adds up a slip frequency command and the reference frequency to provide the frequency of the output voltage of the inverter.

Abstract: A variable-gauge train control apparatus for a variable-gauge train having a gauge variable in a gauge conversion section includes: a plurality of main motors that transmits driving force to axles and wheels; a plurality of inverters that outputs voltage to at least one of the main motors; and voltage control units that control the individual output voltages of the plurality of inverters. Each of the voltage control units corresponds to one of the inverters and, when at least one of the axles to be subjected to the driving force controlled by the corresponding one inverter is within the gauge conversion section, controls the speed of the associated main motors by using, as a speed command value, a train speed converted into a rotational frequency.

Abstract: An electric-vehicle propulsion control system to drive an electric vehicle includes a plurality of motors, an inverter to apply a common voltage to the plurality of motors, and at least one opening/closing unit or opening/closing unit to enable switching between electrical opening and conduction between the inverter and at least one of the motors.