Abstract: A system includes a first circuit breaker comprising a first solid state switch, first mechanical contacts, and a current sensor structured to sense current flowing through the first circuit breaker, and a second circuit breaker electrically coupled to the first circuit breaker and being structured to interrupt current flowing to the first circuit breaker, wherein the first circuit breaker is structured to transmit, to the second circuit breaker, a request upon detecting a failure mode, and wherein the second circuit breaker is structured to interrupt current flowing to the first circuit breaker in response to receiving the request, and the first circuit breaker is further structured to open the first mechanical contacts when the current flowing through the first circuit breaker drops to a predetermined level.

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.

Abstract: Various examples are provided related to direct current circuit breakers and their control methods. In one example, among others, a hybrid direct current circuit breaker (DCCB) includes an ultrafast mechanical switch (UFMS) connected in series with a commutating switch (CS) or auxiliary circuit breaker (ACB); a main breaker (MB) including a series of ? semiconductor switching stages in parallel with the UFMS and CS or ACB; and control circuitry that can turn off individual switching stages in a defined order in response to opening contacts of the UFMS. The switching stages can be turned off based upon a dielectric strength across the contacts as they open. In another example, a method includes opening contacts of an UFMS connected in series with a CS or ACB; and turning off individual switching stages of a series of ? semiconductor switching stages connected across the UFMS and the CS or ACB.

Abstract: An in-vehicle system is provided with a front J/B and a first voltage detection unit. The front J/B has a main relay unit, a second voltage detection unit, and a second MCU. Based on detection results detected by the first voltage detection unit and a second voltage detection unit when the main relay unit is subjected to on/off operations, the second MCU monitors whether each of the main relay unit, the first voltage detection unit, and the second voltage detection unit has abnormality or not.

Abstract: A power distribution arrangement for distributing AC power to loads requiring AC power is disclosed. The power distribution arrangement comprises a power distribution substation comprising transformers, switches, buses, and feeders, a DC transmission line, and at least one control unit. The control unit may control operation of the switches to selectively connect or disconnect one or more feeders to or from at least one transformer via one or more buses and to selectively connect or disconnect the DC transmission line to or from one or more feeders via at least one bus, whereby AC power is distributed to the loads via the feeders. The control unit may control operation of the switches based on: loading in and a power transfer rating of respective feeders and transformers, and any power transfer via the DC transmission line from the other power distribution substation to the at least one bus.

Abstract: A high-voltage protection module for a metrology device includes a metal-oxide varistor (MOV) coupled across a mains power line, a resistor electrically coupled to the MOV in series with the MOV, and a fuse electrically coupled to the MOV and the resistor in series, the resistor being located between the fuse and the MOV. The fuse opens upon an overvoltage event disengaging alternating current (AC) power from the mains power line to the metrology device.

Abstract: A failure detection frequency of failure diagnosis for a cut-off function can be improved. An on-vehicle control device includes a microcomputer that performs a control operation of an external device, a monitoring element that monitors the microcomputer, an output drive circuit that sends a control signal to the external device based on an instruction from the microcomputer, a communication circuit that switches a communication state with another on-vehicle control device based on an instruction from the monitoring element, and an energization cut-off element that energizes and cuts off a power supply voltage to be supplied to the output drive circuit based on an instruction from the monitoring element. The monitoring element independently instructs the switching of the communication state by the communication circuit and the energization and cut-off of the power supply voltage by the energization cut-off element.

Abstract: A smart circuit breaker includes a communication interface, separable contacts, a processing unit having a memory with a routine stored therein which, when executed by the processing unit causes the processing unit to: sense a power outage in an electrical grid, control a meter to open contacts to disconnect from the electrical grid, sense power restoration to the electrical grid, control contacts corresponding to a secondary power source to open, control the meter to close contacts to reconnect to the electrical grid, sense that a frequency of power from the electrical grid matches a frequency of power from the secondary power source, and control the contacts corresponding to the secondary power source to close.

Abstract: A wireless charging device is provided in this application, which includes: a transmitter coil, a controller, and at least two detection coils. The at least two detection coils are located on a side of a plane on which the transmitter coil is located, and a plane on which the detection coils are located is parallel to the plane on which the transmitter coil is located. The controller is configured to: separately control the at least two detection coils to sequentially connect to an excitation power source, obtain parameters of the detection coils connected to the excitation power source, and control, based on a value difference between the parameters of the at least two detection coils, the transmitter coil to move, so that the transmitter coil aligns with a receiver coil in an electronic device. Furthermore, an automatic alignment method and a charging dock are also provided in this application.

Abstract: A power relay unit includes a high potential side relay connected so that an anode of a parasitic diode is on a high potential side and a cathode is on a low potential side, and a low potential side relay connected in series with a low potential side of the high potential side relay so that a cathode of a parasitic diode is on a high potential side and an anode is on a low potential side. A relay-to-relay connection line connects an intermediate point between the first high potential side relay and the first low potential side relay and an intermediate point between the second high potential side relay and the second low potential side relay. A control unit controls an on/off operation of the first high potential side relay based on a first supply voltage, a second supply voltage, and a relay intermediate voltage.

Abstract: A wireless power receiver system includes a receiver antenna configured for coupling with a transmission antenna and receiving the virtual AC power signals from the transmission antenna, the receiver antenna operating based on an operating frequency. The wireless power receiver system further includes a receiver power conditioning system configured to (i) receive the virtual AC power signals, (ii) convert the virtual AC power signals to alternating current (AC) received power signals, and (iii) provide the AC input power signals to a load.

Abstract: A power supply unit for supplying power to a device has a rechargeable, main battery; a charging arrangement for charging the main battery; a non-rechargeable back-up battery; load terminals for connection to a load; and a control unit for controlling supply of power to the load primarily from the main battery and secondarily from the back-up battery. The device is, in particular, a single bay, stand alone parking meter. In the event that the main battery runs low, the control unit is configured to supply power to the load from both the main battery and the back-up battery or only from the back-up battery. The back-up battery is easily replaceable, and the power supply unit has a bay, with connectors for receiving the back-up battery. The main battery is charged from solar panels. A communication device is provided to communicate status messages wirelessly to a control system.

Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.

Abstract: Systems, methods, and media for wireless power transfer are provided.

Abstract: Disclosed herein is an apparatus that includes a first power ESD protection circuit arranged in a first circuit area; a plurality of data I/O circuits arranged in a second circuit area adjacent to the first circuit area in a first direction; a plurality of data I/O terminals arranged in the second circuit area, each of the plurality of data I/O terminals being coupled to an associated one of the plurality of data I/O circuits; a plurality of first power terminals arranged in the second circuit area; and a first power line extending in the first direction, the first power line coupling the plurality of first power terminals to the first power ESD protection circuit.

Abstract: A distributed energy resources compartment for an electrical panel is pre-wired for installation of a photovoltaic system for a residence. The compartment is mounted on a back plate in the interior of an electrical cabinet. A pre-wired connection within the compartment is configured to connect to a solar circuit breaker within the electrical cabinet, connected as a back-feed circuit breaker to an electrical panel. An opening on a backside of the compartment adjacent to the back plate of the electrical cabinet, is configured to receive connections within the compartment from a solar inverter, through the back plate of the electrical cabinet when the solar inverter is mounted to the back plate of the electrical cabinet.

Abstract: The present invention relates to devices which can be installed in interchangeable bases and which interrupt and subsequently automatically reconnect medium-voltage circuits. The device disclosed herein detects whether there is a fault in the electric circuit and effects automatic interruption and subsequent reconnection after a time that depends on the characteristics of the detected fault and on the device configuration. The design of the device reduces the contact wear of vacuum switch and lengthens the useful life thereof. The device is further characterized in that it gathers detailed information regarding electrical characteristics of medium-voltage line; it is self-powering and stores electrical power, thereby allowing the device to keep operating even when there is no current in the line.

Abstract: A battery-powered control device may be configured to control an amount of power delivered to one or more electrical loads and provide various feedback associated with the control device and/or the electrical loads. The feedback may indicate a low battery condition and/or the amount of power delivered to the one or more electrical loads. The control device may include a light bar and/or one or more indicator lights for providing the feedback. The control device may operate in different modes including a normal mode and a low battery mode.

Abstract: A wireless power transfer pad apparatus may include a ferrite structure and four windings adjacent to the ferrite structure. The ferrite structure may include a magnetic pathway. A ferrite pathway between adjacent windings of the four windings may have a thickness and a width to provide a low impedance, unsaturated magnetic pathway for an electromagnetic field generated by the adjacent windings. Other examples may be described and claimed.

Abstract: Current absorption management for an electronic fuse coupled between an electrical supply source node and an electrical load node selectively controls a high current electronic switch and a low current electronic switch coupled in parallel between the electrical supply source node and the electrical load node. The high current and low current electronic switches are alternatively actuated: in a first mode where the high current electronic switch is turned on and the low current electronic switch is turned off, and in a second mode where the high current electronic switch is turned off and the low current electronic switch is turned on. Change to the second mode may be made in response to a standby state or a sensing of a lower current in the electrical load. Conversely, change to the first mode may be made in response to a sensing of a higher current in the electrical load.