A power and data distribution module includes a plurality of first power supply interfaces, configured to be connected to a plurality of power supply lines, a data bus interface configured to be connected to a data bus, a plurality of power output interfaces, configured to be connected to an electrical load and to supply electrical power from a first power supply interfaces to the connected electrical loads, a plurality of voltage distribution modules coupled between the first power supply interfaces and the power output interfaces and configured to provide AC or DC voltage via the power output interfaces, a load shedding module configured to receive load shedding information via data communication over one or more power supply lines, and a data concentrator configured to receive redundant load shedding information via data communication over the data bus and to transmit the redundant load shedding information to the load shedding module.

A request is received for a higher torque from a torque controller than is possible from a power supply. The torque controller is coupled to a motor and the power supply, and the motor is coupled to an actuator. The actuator ultimately establishes resistance for a user in an exercise. An energy storage device is discharged to the motor in order to generate the higher torque, wherein the energy storage device is indirectly coupled to the torque controller.

Described and shown is a process for preparing an emergency energy storage device, with at least one energy storage element for operation, whereby the emergency energy store is designed to provide emergency electrical energy for at least one energy consumer, whereby the energy (E.sub.L) which can be drawn from the emergency energy storage and/or the peak output (P.sub.max) which can be drawn from the emergency energy storage is determined and the operational readiness is established as soon as the energy (E.sub.L) which can be drawn from the emergency energy storage and/or the peak output (P.sub.max) which can be drawn from the emergency energy storage has reached a definable minimum energy value. A process for preparing an emergency energy storage device for operation in which the emergency energy storage is discharged via a discharging device and the heat occurring at the internal resistance (R.sub.i) is used to heat the emergency energy storage device.

An in-vehicle power control system includes a first load control unit and a power control device. In the power control device, switch units respectively switch the second conductive paths between an electrically connected state and a not-electrically connected state. A second load control unit predetermines types of switch units, and, if the second load control unit has received, from the first load control unit, a power reduction instruction in which a control method is designated by type, controls the switch units for each type thereof based on the control methods designated by type by the power reduction instruction.

In general, one or more loads on a vehicle can be connected to both a first voltage source on the vehicle and a backup vehicle power system on the vehicle. If the voltage provided by the first voltage source to the one or more loads satisfies a voltage threshold, the backup vehicle power system does not provide power to the one or more loads. However, if the voltage provided by the first voltage source to the one or more loads falls below the voltage threshold, the backup vehicle power system provides power to the one or more loads.

Techniques for implementing a fault-tolerant power supply are described. In an example, a system converts an alternating-current (AC) voltage to an initial direct current (DC) voltage. The system further converts the initial DC voltage to a first DC voltage and a second DC voltage. The system applies the first DC voltage to a high-priority device such as a metrology device. The system applies the second DC voltage to a low-priority or peripheral device. When the initial DC voltage is outside a voltage range, the system deactivates the second DC voltage to the lower-priority device and maintains the first DC voltage to the metrology device.

An uninterrupted power system for providing power to fire extinguishing systems of vehicles, and for providing continued operation without being influenced by the power supply. A micro processor controlled smart control circuit provided in the device tracks and controls the active power supply voltage of the systems continuously. In case the active power source voltage is above an upper threshold level or under a lower threshold level, it turns on and supplies the system via super capacitors. The action of turning on is automatically performed by the control circuit. In case voltage goes under the upper threshold level or above the lower threshold level, the system's power supply goes into on status immediately and it is checked in a specified time to determine whether or not such change arose from voltage fluctuations. If the change is stable during a lapsing period and is at normal voltage levels, the power source is restarted.

A vehicle power supply control system includes a communicator configured to receive an emergency notification for notifying that an emergency situation has occurred and a controller configured to control charging and discharging of a secondary battery that supplies electric power to an electric motor for outputting a travel driving force of a vehicle. The controller is configured to perform control for extending an electric power supply range in the secondary battery in a case where the communicator has received the emergency notification.

A charger comprises an input circuit that receives power from a power source, a converter circuit, an output circuit, and a switching circuit. The converter circuit is connected between the input circuit and a signal ground of the charger and converts the power from a first voltage to a second voltage. The signal ground is connected to a chassis ground of the charger. The output circuit is connected between an output of the converter circuit and the signal ground and the chassis ground, and outputs the second voltage to an output connector of the charger. The switching circuit is connected between the output of the input circuit and an electrically conducting casing of the output connector, and controls the converter circuit. The switching circuit and the electrically conducting casing of the output connector are not connected to the signal ground and the chassis ground of the charger.

A method for controlling power supply to a device includes detecting that the device is in a first operating state selected from a plurality of predetermined operating states. The method also includes generating, based on the detected first operating state of the device, a first control signal for controlling a state of a switch, the switch being configured to control a power source to provide power to the device when the switch is in a connected state, and not provide power to the device when the switch is in a disconnected state. The method further includes controlling the switch according to the first control signal regardless of a second control signal, wherein the second control signal is configured to control the state of the switch when the device is in a second operating state selected from the plurality of predetermined operating states.