An arrangement and a method for carrying out a self-load test on a rail vehicle which has a dual-mode drive system. A first drivetrain of the rail vehicle includes a diesel engine, which is coupled to an electric generator to generate electrical power. The generator is connected via a first converter to a DC link to transfer the power delivered by the generator as required into the DC link. A second drivetrain of the rail vehicle has an electrical line system, which is connected via a second converter to the DC link to transfer power from the line system as required into the DC link. During the self-load test of the diesel engine, the power delivered by the generator passes in part via a third converter to a braking resistor and in part via the second converter into the line system.

A control method of a converter of a vehicle comprises: deriving, by a controller, an energy gain of a drive motor and an energy loss of a converter in the case that the converter constituting a vehicle power conversion system is operating in a boosting mode; comparing, by the controller, the energy gain of the drive motor with the energy loss of the converter; and a step of adjusting, by the controller, a voltage command of the converter depending on a comparison result.

In a control apparatus mounted in a vehicle and configured to control a power supply system, a power generation controller is configured to operate an alternator such that a charge level of a second rechargeable battery becomes a target charge level. A target charge level setter is configured to variably set the target charge level of the second rechargeable battery based on changes in state quantity correlated with at least one of a charge state and a discharge state of the second rechargeable battery. A limiter is configured to, if there is a change in the state quantity and if a prescribed permission condition is not met, limit the operation of the alternator.

An internal combustion engine to electric motor conversion system for a work machine is provided. The electric motor conversion system is sized to substantially conform to a footprint of the internal combustion engine on the work machine. The electric motor conversion system includes an electric motor, a power distribution unit and a connecting bracket. The electric motor is configured for direct mounting on a frame of the work machine. The power distribution unit is separate from and positioned atop the electric motor. The power distribution unit controls operation of the electric motor. The connecting bracket is separate from the electric motor and power distribution unit. The connecting bracket includes a base, first attachment elements extending from a lower surface of the base for attachment to the electric motor, and second attachment elements extending from an upper surface of the base for attachment to the power distribution unit.

An internal combustion engine to electric motor conversion system for a work machine is provided. The electric motor conversion system is sized to substantially conform to a footprint of the internal combustion engine on the work machine. The electric motor conversion system includes an electric motor, a power distribution unit and a connecting bracket. The electric motor is configured for direct mounting on a frame of the work machine. The power distribution unit is separate from and positioned atop the electric motor. The power distribution unit controls operation of the electric motor. The connecting bracket is separate from the electric motor and power distribution unit. The connecting bracket includes a base, first attachment elements extending from a lower surface of the base for attachment to the electric motor, and second attachment elements extending from an upper surface of the base for attachment to the power distribution unit.

A hybrid vehicle battery cell rebalancer for hybrid vehicles used to restore cell balance and improve performance while cooling and protecting the hybrid battery against damage from the rebalancing process. This may be accomplished by charging and/or discharging the battery cells in the hybrid battery pack at the same time while powering and controlling the vehicle's hybrid battery cooling fan.

A hybrid battery system of an automotive vehicle provides power to various features without running an internal combustion engine.

A control device for a fuel injection system includes a CPU which generates a drive signal for instructing execution of compression by a feel pump; a fuel pump drive circuit which controls application of electric power to a solenoid of the feel pump based on the drive signal; a boost circuit provided with a capacitor for storing electric power to be used for driving an injector; a charging circuit which leads a current generated when the application of electric power to the solenoid is stopped to the capacitor; and an excess electric power consumption circuit which consumes excess electric power of the capacitor. While feel injection from the injector is stopped, the CPU counts the number of times the feel pump is driven and turns off the drive signal so as to stop driving the feel pump as soon as the drive count has exceeded a predetermined count value.

A rotating electrical machine control device where the changeover control circuit switches the source of electric power for the electronic control unit when the electric power that is supplied from the second DC power supply to the electronic control unit becomes equal to or lower than a predetermined first reference value and electric power that is output from the backup power supply is equal to or higher than a predetermined second reference value, and the electronic control unit uses the electric power supplied from the backup power supply to cause the inverter o perform the switching operation to perform fail-safe control.

A traction battery of a vehicle includes a temperature compensated passive wireless surface acoustic wave sensor within the traction battery and a controller. The temperature compensated passive wireless surface acoustic wave sensor is configured to receive a broadcast signal and transmit a reflected signal. The controller is programmed to transmit the broadcast signal and receive the reflected signal, and based on a difference in phase and amplitude between the broadcast and reflected signals indicative of an increase in pressure within the traction battery, stop charging the traction battery.