The disclosure is directed at an apparatus and method for shifting or moving trailers. In one aspect, the apparatus is a converter dolly with at least one set of powered wheels, which can be equipped with a remote control steering device. In another aspect, the apparatus is a remotely controlled terminal tractor configured to be coupled to a trailer. In some aspects, the remote control of the apparatus is directed by an autonomous algorithm resident remotely or on the apparatus itself. In another aspect, a frame of an apparatus for towing a trailer includes an articulated frame with a first frame counterpart pivotably connected to a second frame counterpart.

A car control device includes a driving force calculating unit that calculates driving force necessary for a train to travel; an operating number calculating unit that determines the number of M cars to be operated on the basis of the driving force; and a driving force command calculating unit that calculates driving force commands to be given to the M cars that operate depending on the number of M cars to be operated, wherein the driving force command calculating unit continuously changes the driving force commands when the number of M cars to be operated changes.

The present disclosure relates to a controller for controlling operation of at least first and second traction machines in a vehicle. The controller includes a processor configured to predict an operating temperature of each of said at least first and second traction machines for at least a portion of a current route. The processor determines at least first and second torque requests for said at least first and second traction machines. The at least first and second torque requests are determined in dependence on the predicted operating temperatures of the at least first and second traction machines. The processor generates at least first and second traction motor control signals in dependence on the determined at least first and second torque requests. The present disclosure also relates to method of controlling at least first and second traction machines in a vehicle.

The present disclosure relates to a controller for controlling operation of at least first and second traction machines in a vehicle. The controller includes a processor configured to predict an operating temperature of each of said at least first and second traction machines for at least a portion of a current route. The processor determines at least first and second torque requests for said at least first and second traction machines. The at least first and second torque requests are determined in dependence on the predicted operating temperatures of the at least first and second traction machines. The processor generates at least first and second traction motor control signals in dependence on the determined at least first and second torque requests. The present disclosure also relates to method of controlling at least first and second traction machines in a vehicle.

An electric machine unit for a motorized device, said electric machine unit includes: a rotor assembly including rotor members, and a rotor shaft configured to support said rotor assembly, with said rotor assembly being capable of rotating along with said rotor shaft; and a stator assembly including stator members, with each stator member being configured to work in conjunction with a corresponding rotor member of the rotor members, and a mode selector configured to enable operation of one or more of said stator members to rotate said rotor shaft depending one or more parameters of said motorized device.

A vehicle includes a motor, an inverter, an inter-line short circuit, an operation circuit, and a harness. The motor is provided in a wheel. The inverter is configured to supply electric power to the motor. The inter-line short circuit is provided in the wheel and configured to cause the motor to be short-circuited when not in operation and couple the motor and the inverter when in operation. The operation circuit is provided in a vehicle body of the vehicle and configured to operate the inter-line short circuit. The harness extends between the wheel and the vehicle body. In the harness, at least one power supply line, which is configured to supply electric power to the motor through the inverter and the inter-line short circuit, and an operation line, which is configured to couple the inter-line short circuit and the operation circuit, are bundled.

The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.

The disclosure is directed at an apparatus for an active converter dolly for use in a tractor-trailer configuration. In one aspect, the apparatus includes a system to connect a first trailer towed behind a towing vehicle to a second trailer. The apparatus further includes a kinetic energy recovery device for translating the mechanical motions or actions of the dolly into electricity or electrical energy so that this energy can be used to charge a battery or to power other functionality for either the dolly or the tractor-trailer. The active dolly may also operate to assist in shunting the tractor-trailer. The active dolly is operable in a number of modes to increase vehicle performance and efficiency.

An electric vehicle control device includes a first inverter controlling a first group defined by induction motors, and a second inverter controlling a second group defined by induction motors. The first inverter and the induction motors of the first group are connected to each other by a first conductor. The second inverter and the induction motors of the second group are connected by a second conductor. A first length is equal to or less than three times the average value of a second length and a third length. The first length is an inter-center distance between the first conductor and the second conductor, the second length is the maximum length of a conductor portion of the first conductor in the cross section of the first conductor, and the third length is the maximum length of a conductor portion of the second conductor in the cross section of the second conductor.

The present disclosure relates to the technical field of vehicles, and provides a discharging vehicle and a vehicle charging system. The discharging vehicle includes a discharging control device, a first power battery, a motor, and a motor control circuit. A first electrode and a second electrode of the first power battery are respectively connected to a first input terminal and a second input terminal of the motor control circuit. The discharging control device realizes, by using the motor control circuit, DC step-down charging of the second power battery by the first power battery.