Abstract: An inductive power outlet for wirelessly powering a power receiver is presented that comprises a voltage peak detector that is configured to detect voltage changes that are indicative of increase in a system resonant frequency. The inductive power outlet is configured to respond to detected voltage changes by shutting down or issuing a warning, and the voltage peak detector is further used to detect communication signals initiated by the power receiver to the power outlet.

Abstract: The disclosure provides a wireless charging device including a metal frequency-selective box and an internal charging system disposed inside the metal frequency-selective box for wireless charging. The internal charging system includes a multi-antenna subsystem including N antenna units; N is an integer greater than 2, and the antenna units are dipole antennas, microstrip patch antennas, microstrip slot antennas, helical antennas, or dielectric resonator antennas. The N antenna units are evenly disposed, in a two-dimensional ring, on inner sides of four side faces of the metal frequency-selective box, or disposed on a three-dimensional curved surface of the entire inner side of the metal frequency-selective box. The device to be energized is disposed in the metal frequency-selective box and is surrounded by the N antenna units.

Abstract: Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.

Abstract: An apparatus includes a controlled field alternator or utility source of electrical power, a conversion device, and a controller. The conversion device includes a first power input associated with a first power source, a second power input associated with a second power source, and circuitry configured to perform a first conversion of power from a first format from the first power source to a second format for charging the second power source and perform a second conversion of power from the second format for the second power source to a third format for supplying a load.

Abstract: This document relates to electricity management using modulated waveforms. One example modulates electricity to obtain modulated electricity having at least two different alternating current frequencies including a first alternating current frequency and a second alternating current frequency. The example delivers the modulated electrical power having the at least two different alternating current frequencies to multiple different electrical devices, including a first electrical device configured to utilize the first alternating current frequency and a second electrical device configured to utilize the second alternating current frequency. The modulated electricity can be delivered at least partly over an electrical line shared by the first electrical device and the second electrical device.

Abstract: A method comprises providing power from a battery to an external device using a first circuit; and receiving power from a first power source to provide power to the battery using a second circuit while providing power to the external device.

Abstract: A power accumulation system includes a power accumulation device, a relay device provided in a pair of power lines disposed between the power accumulation device and a power conversion device that exchanges power with the power accumulation device, a capacitor provided between the pair of power lines between the relay device and the power conversion device and an electronic control device that controls the relay device. The electronic control device is configured to execute a predetermined foreign matter removal process when it is not possible to bring one of a first relay and a second relay from a power blocking state to a conductive state.

Abstract: A system for an autonomous vehicle includes sensors, a time sensitive network switch, and a sensor interface. The sensors are configured to generate sensor data. The time sensitive network switch is configured to receive the sensor data and an elevated voltage.

Abstract: Examples of the disclosure include a power system comprising an input to receive input power, an output to provide power to a load, a sensor configured to provide load information indicative of power drawn by the load, a plurality of power modules, each having a power module input configured to be coupled to the input, and a power module output configured to be coupled to the output, and a controller coupled to the power modules and the sensor, and being configured to control the power modules to provide power to the output, receive the load information from the sensor, select, based on the load information, at least one power module to maintain in an active state to provide power to the output, and deactivate each power module other than the at least one power module based on selecting the at least one power module to maintain in the active state.

Abstract: A connector for use in coupling a load device to electrical conductors of a direct current bus bar. The connector has a housing and the housing carrying a printed circuit board that is electrically coupled to the bus bar and the load device. The printed circuit board functions to control the providing of direct current power from the bus bar to the load device, provide a dimming signal to the load device, and/or selectively provide direct current from a source of emergency power to the load device.

Abstract: A power supply control device includes: a power generator that converts energy into power; an environmental sensor that detects a state of an ambient environment; and a controller that controls an operation timing of a functional circuit that operates upon receipt of power supplied from the power generator based on the state of the ambient environment detected by the environmental sensor.

Abstract: The present disclosure relates to a method and a device for transmitting data in a wireless power transmission system. The method for transmitting data by a wireless power transmitter in a wireless power transmission system may comprise the steps of: receiving from a wireless power receiver, within a first control error interval, a first control error packet containing a control error value with respect to power transmitted from the wireless power transmitter; determining the size of a first data packet on the basis of the length of the first control error interval; and transmitting the first data packet to the wireless power receiver.

Abstract: Systems for power sharing coordination of parallel sources are provided. Aspects include a first DC power supply, a second DC power supply, a first generator controller configured to operate the first DC power source, a first current sensing device coupled between the first DC power supply and the common bus point, a second current sensing device coupled between the common bus point and a load, wherein the first generator controller is configured to receive a first current signal from the first current sensing device, receive a second current signal from the second current sensing device, determine a load share percentage for the first DC power supply, determine a first voltage adjustment based on the first current signal, the second current signal, and the load share percentage, and operate the first DC power supply to adjust a first voltage output by the first voltage adjustment.

Abstract: A system incorporating safety features, for optical power transmission to receivers, comprising an optical resonator having end reflectors and a gain medium, a driver supplying power to the gain medium, and controlling its small signal gain, a beam steering apparatus and a controller to control at least the beam steering apparatus and the driver. The controller responds to a safety risk occurring in the system, by outputting a command to change at least some of the small signal gain of the gain medium, the radiance of the optical beam, the power supplied by the driver, the scan speed or the scan direction and position of the beam steering apparatus, or to register the scan pose which defines the location of said optical-to-electrical power converter. The controller may also ensure a high overall radiance efficiency, and may warn of transmitted power not received by a targeted receiver.

Abstract: A method for power management of a multi-cell battery includes identifying a desired power value and voltage value, determining a battery voltage value and a battery current value for a battery, determining a number of battery banks from a plurality of battery banks to use for the battery, where each battery bank includes one or more battery cells (or battery modules), checking availability of each of the one or more battery cells (or battery modules), selecting one or more battery banks from the plurality of battery banks, where the selection of a battery bank is based on the availability of the battery cells (or battery modules) included in the battery pack, and a quantity of the selected battery banks is equal to the determined number of battery banks, and connecting the available battery cells (or battery modules) in the selected one or more battery banks to form the battery.

Abstract: A power distribution node for a power architecture, and method for operating, includes a microgenerator configured to generate a supply of electrical power, and a power distribution unit connected with a power supply bus and the microgenerator and configured to selectively energize at least a subset of electrical loads disposed proximately to the power distribution node. The energizing power is operably supplied by at least one of the power supply bus or the microgenerator.

Abstract: A precharge controller includes a main contactor, a capacitor, a precharge contactor, a current sensor, and a control unit. When starting a power supply from a battery to load, the control unit starts precharging by closing the precharge contactor when a detected current is equal to a preset value or lower, determines completion of precharging when the detected current once equal to or exceeded a first threshold value falls to a second threshold value or lower, and closes the main contactor.

Abstract: The invention relates to a method for operating a fuel cell arrangement which has a fuel cell for providing electrical energy in an electric circuit that has a circuit which is electrically connected to the fuel cell via a DC-DC converter, and a battery. It is provided that in at least one mode of operation of the fuel cell arrangement, following a start-up of the fuel cell, the battery is electrically disconnected from the circuit, and the DC-DC converter is operated in non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell. The invention further relates to a fuel cell arrangement.

Abstract: A method of wireless power transmission is performed at a wireless-power-transmitting device having one or more antennas configured to transmit wireless-power signals, one or more processors, and a wireless data transceiver.

Abstract: An islanding detection method and apparatus, and a computer-readable storage medium. The detection method includes: determining a harmonic amplitude growth rate and a frequency growth rate of alternating current electricity output by an alternating current port of a grid-tied inverter; determining an islanding disturbance coefficient corresponding to the harmonic amplitude growth rate, where the harmonic amplitude growth rate and the islanding disturbance coefficient are in a monotonically increasing relationship; determining an islanding injection amount based on the frequency growth rate and the islanding disturbance coefficient corresponding to the harmonic amplitude growth rate; controlling, based on the islanding injection amount, the grid-tied inverter to output a reactive power or a reactive current over the alternating current port; and performing islanding detection based on a frequency of the alternating current electricity output by the alternating current port.