Abstract: A relay array may connect an electrical device (e.g., an inverter, power converter, etc.) to a utility grid. Based on a detection of a power interruption or fault, the relay array may disconnect the electrical device from the grid to ensure safety or reduce damage to the electrical device or grid. The relay array may include one or more electromechanical relays (e.g., latching relays). A safety catch may prevent the latching relay(s) from changing states. The electrical device may be configured to facilitate removal of the safety catch once the ability to change states is desired. The latching relay(s) may also be supplied with a power pulse for changing a state of the latching relay(s). The power pulse may be provided by a power bank that may be maintained with power in case of a power interruption or fault.

Abstract: A method and aircraft power distribution system includes a power distribution bus supplying power along an electrical line, a primary communication module including a primary transceiver and a primary controller, and a plurality of secondary communication modules including a secondary transceiver communicatively coupled to the primary transceiver and a secondary controller communicatively coupled to the secondary transceiver.

Abstract: A power conversion device includes a main body portion that converts inputted current, an output portion that is separate from the main body portion and includes an output terminal portion that outputs current converted by the main body portion, and a conductive member that connects the main body portion and the output portion with each other and transmits the current from the main body portion to the output terminal portion.

Abstract: A bus bar assembly includes a first bus bar including a narrowing portion with a reduced cross-sectional area in a first direction between the end portions thereof, a second bus bar spaced from the first bus bar, an arc-blocking portion disposed to surround the narrowing portion at the least, a magnetic core disposed on the outside of the arc-blocking portion, and a housing accommodating respective portions of the first bus bar and the second bus bar, the arc-blocking portion, and the magnetic core.

Abstract: A vehicular power system includes a battery disposed at a vehicle, an electrical motor disposed at the vehicle that controls propulsion of the equipped vehicle when powered, a power system controller, and a transformer electrically connected to the battery. The transformer includes a plurality of taps, each tap of the plurality of taps providing a different output voltage. The power system controller, responsive to a vehicle speed request, determines one of the plurality of taps. The power system controller electrically connects the determined one of the plurality of taps to the electrical motor, and electrical power flows from the battery through the determined one of the plurality of taps to the electrical motor. The electrical motor, based on the electrical power from the determined one of the plurality of taps, adjusts speed of propulsion of the equipped vehicle toward the requested vehicle speed.

Abstract: According to one embodiment, a power supply device connected to a power grid is provided. The power supply device includes an inverter, a control unit configured to control operation of the inverter using a first parameter value so as to simulate characteristics of a synchronous generator, and an acquisition unit configured to obtain a second parameter value different from the first parameter value. The control unit is configured to control the operation of the inverter by changing the first parameter value to the acquired second parameter value.

Abstract: Methods and systems for supplying electrical power from a vehicle to an external accessory are described. In one example, two different voltages may be applied at different times to a connector so that the external accessory device need not include a battery. In particular, a first voltage may power a main load of the external accessory and a second voltage may power a microcontroller that communicates with the vehicle.

Abstract: A charging device wiredly transmits identification information to a power storage pack after the power storage pack is mounted. The power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The charging device collates whether or not the identification information included in the received signal matches the identification information wiredly transmitted.

Abstract: A robot includes: an arm; a shaft supported at a tip of the arm so as to be movable in a direction of a predetermined axis; a power transmitting unit fixed to the arm and connected to a power supply; and a power receiving unit and a battery that are fixed to the shaft. In a state in which the shaft is positioned at a predetermined position in the direction of the axis, the power receiving unit is close to the power transmitting unit to wirelessly receive power transmitted from the power transmitting unit, and the battery stores the power received by the power receiving unit and uses the power as a power source of a device attached to the shaft.

Abstract: An arrangement for connecting and disconnecting DC networks includes a main bus for connecting a plurality of DC lines with each other. First and second DC lines are connected between first and second DC networks and the main bus via respective main switches. The DC networks contain a DC operating equipment, such as a converter, an energy storage device, a DC chopper, a DC cable, an energy source and/or a load. A transfer bus that is electrically connected to the main bus has a transfer bus disconnector for disconnecting the main bus from the transfer bus, a transfer switch, and a current limiting device with a resistor and a parallel resistor bypass switch. The first DC line is connected to the transfer bus via a first transfer disconnector and the second DC line is connected to the transfer bus via a second transfer disconnector.

Abstract: A positive electrode-side input terminal is connected to a first positive electrode-side battery terminal, a negative electrode-side input terminal is connected to a second negative electrode-side battery terminal, a first switch is connected between a first negative electrode-side battery terminal and a second positive electrode-side battery terminal, a second switch is connected between a second positive electrode-side battery terminal and a first connection point between the positive electrode-side input terminal and the first positive electrode-side battery terminal, a third switch is connected between the first negative electrode-side battery terminal and a second connection point between the negative electrode-side input terminal and the second negative electrode-side battery terminal, a positive electrode-side output terminal is connected to a line connecting the second switch and the second positive electrode-side battery terminal, and a negative electrode-side output terminal to a line connecting the

Abstract: A wireless power supply unit includes: a power transmitting coil; and a power receiving coil that wirelessly receives electric power from the power transmitting coil. One of the power transmitting coil and the power receiving coil is shaped so that, during use, a central portion thereof is located beyond an outer peripheral portion thereof, as viewed from another one of the power transmitting coil and the power receiving coil.

Abstract: Management device manages a plurality of power storage modules connected in parallel to load via switches. With some of switches connected to some of the plurality of power storage modules being in an on state and other switches connected to other power storage modules being in an off state, determination unit of management device does not permit at least one of other switches in the off state to be turned on in a case where at least one switch is turned on and an upper limit value of a current or power allowed to be supplied to load entirely from the plurality of power storage modules with at least one switch being turned on becomes less than or equal to a value before the turning-on of at least one switch.

Abstract: A power supply apparatus includes: a first battery configured to supply power; a first converter configured to step down a voltage output from the first battery to a first voltage; a second converter configured to step down the voltage output from the first battery to a second voltage lower than the first voltage; a third converter configured to convert the first voltage into the second voltage; a fourth converter configured to convert the second voltage into the first voltage; a first controller configured to supply the first voltage output from the first converter to at least one of a first load or the third converter; and a second controller configured to supply the second voltage output from the second converter to at least one of a second load or the fourth converter.

Abstract: A power supply system providing a power conversion function for a system circuit includes first, second and third convertor circuits respectively including plural switches and first, second and third inductors. The first and second convertor circuits are coupled to first and second power supplies respectively through first and second ports of the system circuit. A third power supply is coupled to a battery module and an internal load circuit. The plural switches are configured to correspondingly switch the first to third inductors to perform power conversion between the first to third power supplies and an internal power bus of the system circuit. The voltage of the internal power bus is configured to be higher than any voltage of the first to third power supplies, such that a current of the internal power bus is lower than a third current of the third power supply.

Abstract: Standby circuit for an electric appliance, the standby circuit comprising: an AC power input for connection to an AC power source, for example to the mains; an AC power output for connection to a control circuit of an electric appliance; a control circuit power line connecting the AC power input to the AC power output, the control circuit power line comprising a control circuit power switch for closing and opening the control circuit power line; a logic device for controlling the control circuit power switch; an auxiliary AC to DC converter connected to the AC power input for supplying DC power to the logic device when the control circuit power line is open; a power-on AC to DC converter connected to the AC power output for supplying DC power to the logic device when the control circuit power line is closed; one or more passive and/or active input components for sensing an input of a user of said electric appliance and generating a corresponding signal; wherein the logic device is configured to receive the si

Abstract: [Problem to be solved] To achieve adjustment of an electric line based on indexes set separately for harmonic components having different orders in a current in the electric line. [Solution] A power control system causes a device to adjust apparent power in an electric line, and the power control system includes a setting unit that sets an index regarding each adjustment for a harmonic component of a first order group in a current in the electric line, a harmonic component of a second order group higher in order than the first order group in the current in the electric line, and a fundamental component in the current in the electric line, and a control unit that controls each adjustment by the device based on the index set by the setting unit.

Abstract: An electric vehicle includes an electrical system and performs a method of charging the electric vehicle. The electrical system includes a first battery subpack, a second battery subpack, wherein the first battery subpack, the second battery subpack, and an electrical load of the electric vehicle are connected in parallel, and a processor. The processor is configured to control a first connection between the first battery subpack and a first charge port and a second connection between the second battery subpack and a second charge port to charge each of the first battery subpack and the second battery subpack while providing power to the electrical load.

Abstract: An embodiment fuel cell vehicle includes a fuel cell, a power distributor disposed on the fuel cell and configured to receive power generated by the fuel cell, a voltage cable connected to a rear side of the power distributor, and a cable bumper coupled to the rear side of the power distributor and surrounding a portion of the voltage cable.

Abstract: A scalable DC power distribution and control system suitable for commercial buildings includes one or more power and control hubs. Each DC power and control power hub provides power and control for any suitable distributed DC loads such as light-fixtures. AC power from the electric utility is applied to the power and control hub and is converted to DC power for distribution to DC loads within the space using low-voltage cables.