Abstract: A power load bank apparatus may include a master switch selectable between a series configuration and a parallel configuration. An input port of the power load bank may receive three phases of Alternating Current (“AC”) power from a power grid. A set of tuning elements may be provided, with each tuning element including a tunable rheostat and a rheostat bypass breaker. An output port may provide a tuned power output based on tuned rheostats in the set of tuning elements and the selected configuration, and a cooling system may keep the power load bank at a safe temperature. An interactive user display may be used to determine power load bank parameters.

Abstract: Provided is an EMC filter for rejecting external EMC noises and filtering self-generated emission radiations. The EMC filter includes a first connection port configured to receive one or more input signals from a plurality of sensors and an input power signal. The EMC filter further includes a first filter stage, a second filter stage, and a third filter stage. The first filter stage is configured to filter the received input power signal and the second filter stage is configured to filter one or more ground output signals of the EMC filter. The third filter stage is configured to filter the received one or more input signals to remove EMC noises from the received one or more input signals. The EMC filter further includes a second connection port configured to output the filtered one or more input signals and the filtered input power signal to a fleet management apparatus.

Abstract: A wireless power supply system using Parity-Time symmetry for supplying an electric power from an external device 19 installed outside a human body to an internal device 29 installed inside the human body for driving an artificial device, wherein a power transmission side resonance circuit 12 is formed by connecting a power transmission side coil 11 and a power transmission side resonance capacitor in series with each other, a power reception side resonance circuit 22 is formed by connecting a power reception side coil 21 with at least one of power reception side resonance capacitors, and resonance frequencies are matched with each other between the power transmission side resonance circuit and the power reception side resonance circuit.

Abstract: A contactless power transmission system includes a power transmitting unit, a power transmission power conversion unit, and a power transmission side control device. The power transmitting unit has a primary coil for sending out AC power to be transmitted to a power receiving device in a non-contact manner. The power transmission power conversion unit has a plurality of transistors connected to the primary coil. The power transmission power conversion unit converts a DC power supplied from a power source unit to an AC power. The power transmission side control device sets transmission power at a start period of initial power transmission by the power transmitting unit to less than a predetermined power. The power transmission side control device changes the transmission power in a tendency of increasing toward a predetermined power as a time elapses from a start of power transmission by the power transmitting unit.

Abstract: An assembly (10) for potential equalization in potentially explosive areas is described, having an outer housing (20), a gas discharge arrester (22), a short-circuiting device (30) and a fault indicator (42). At least the gas discharge arrester (22) and the short-circuiting device (30) are accommodated in the outer housing (20). The short-circuiting device (30) comprises at least one spring (32) and an actuating element (34), which is preloaded into a short-circuit position by the spring (32). The gas discharge arrester (22) has a base body (24) which is filled with a gas and connected to a first connecting part (16) via a thermally detachable connection (38). The fault indicator (42) is set up to indicate a tripping event of the short-circuiting device (30).

Abstract: An in-wall power adapter for controlling an application of power to a load is described.

Abstract: An RC circuit 110 is connected in series between VDD and GND. A RC circuit 120 is set with a time constant different from that of the RC circuit 110 connected in series between VDD and GND. In the inverter circuit 210, a potential is input between a resistance element 111 and a capacitance element 112. In the inverter circuit 220, a potential is input between a resistance element 121 and a capacitance element 122. In an NMOS transistor 310, an output of the inverter circuit 210 is input to a gate terminal, and a drain terminal is connected to VDD. In an NMOS transistor 320, an output of the inverter circuit 220 is input to a gate terminal, a drain terminal is connected with a source terminal of the NMOS transistor 310, and a source terminal is connected with GND.

Abstract: An apparatus includes a transient voltage suppression (TVS) device configured to be coupled in parallel with a burden resistor. The apparatus also includes a switch configured to couple the TVS device across the burden resistor. The apparatus further includes a comparator configured to detect a peak output voltage provided by a circuit, determine whether the peak output voltage meets or exceeds a threshold, and control the switch based on whether the peak output voltage meets or exceeds the threshold.

Abstract: A modular static transfer switch (STS) assembly comprises a semiconductor powertrain constructed with wide-bandgap transistors. A first input of the STS assembly is electrically coupled to a first power source and a second input of the STS assembly is electrically coupled to a second power source. An output of the STS assembly is electrically coupled to a load, wherein the load is powered using the first power source via the STS modular assembly. A galvanic isolator like relay or contactor or breaker or fuse disconnects any faulty semiconductor powertrain. The STS also comprises a controller to execute the transfer of power supplied to the load from the first power source to the second power source by electrically decoupling the first power source from the load, verifying that the first power source is disconnected from the load, and providing instructions to electrically couple the second power source to the load.

Abstract: A fault-responsive power system and method using asynchronous load current switching. A first supply-side current that flows from a power supply into a first conductor, which electrically couples the power supply to a load, is measured. Power is delivered to the load by modulating a first remote-side current on and off, with the remote-side current entering the load from the first conductor. Once it is determined that the first supply-side current has met or exceeded a magnitude threshold for at least a duration threshold, the first supply-side current is reduced such that the first supply-side current is less than the magnitude threshold. A data signal may also be transmitted by embedding a data signal in the first remote-side current through the modulation of the first remote-side current, and demodulating the data signal in the first supply-side current.

Abstract: A data hub of a home automation system is powered by a power supply of at least one powered device of the home automation system that is connected to the data hub. By providing power to the data hub from the one of the devices that are connected to it, the need for a separate power source is eliminated. A method for powering a data hub of a home-automation system without bus power includes connecting at least two independently powered devices to device ports of the data hub. When the powered devices are connected to the ports, a voltage is detected by an internal power regulation, protection and distribution unit of the hub and disconnects bus power. A system for powering the data hub includes configuring the hub to receive power by devices connected thereto. When the hub receives power from the powered device, bus power is disconnected.

Abstract: A system for distributing auxiliary power onboard of a train including a first car, a second car, and a third car equipped each with electric loads, including: a power distribution line extending across the cars; a first, a second and a third auxiliary power generators each configured to supply power to the electric loads on the first, second and third cars, respectively; a first and a second auxiliary power switching devices positioned along the power distribution line between the first and second auxiliary power generators and between the second and third power generators, respectively; a third and a fourth auxiliary power switching devices positioned along the power distribution line at the second car. When one of the auxiliary power generators is faulty, loads installed on the car affected by the faulty generator are supplied by one of the other auxiliary power generators via switching of the power switching devices.

Abstract: There is provided a method of operating at least one transmitter module of a wireless power transfer system. Each transmitter module comprises a plurality of transmitter elements arranged in a plurality of offset layers with one transmitter element per layer. The method comprises detecting a receiver at at least one transmitter element of the transmitter module. The method further comprises, in response to the detecting, generating a power signal to transfer power from a first transmitter element of the transmitter module to the detected receiver. The method further comprises causing a second transmitter element of the transmitter module to remain inactive during the transferring. Controller and further methods are also provided.

Abstract: Systems and devices for levitating interactive objects are provided. A toy wand system can include a toy wand and a cradle. The toy wand can include a shaft portion having at least one magnetically-reactive element inside and a handle. The cradle can be configured to receive and hold the toy wand. The cradle can include a body that is shaped to form an opening therethrough sufficient to accommodate the shaft portion, a solenoid coil formed proximate the opening, electrical circuitry configured to cause an electrical current to flow in the solenoid coil, wireless communication circuitry; and a controller coupled to the wireless communication circuitry and the electrical circuitry and configured to control the timing and amount of electrical current flowing through the solenoid coil to cause levitation or levitation-like movement of the toy wand within said opening by virtue of electromagnetic interaction with the magnetically-reactive element of the shaft portion.

Abstract: A power supply device includes a power supply circuit that permits an output voltage to be supplied to a succeeding-stage circuit, an external terminal configured to be connectable to the succeeding-stage circuit and to a pull-up resistor to which a supply voltage is applied, a transistor having a first terminal connected to the external terminal, a controller that turns the transistor from on to off when, during start-up of the output voltage, the output voltage enters a normal range and a fault detection circuit that can detect at least one of an open fault, in which the external terminal remains open, and a short fault, in which the external terminal is short-circuited to an application terminal for the supply voltage.

Abstract: A method for operating a circuit breaker which protects an electric circuit is provided. The circuit breaker has a mechanical switch element and an electronic switch element connected in series thereto. In one step, the circuit is reactivated by the electronic switch element after being deactivated by the electronic switch element due to a short-circuit in the protected circuit, the short-circuit being detected by the circuit breaker. At least two current measurement values separated by a time interval are ascertained for the current flowing through the circuit breaker, and two voltage values separated by a time interval are ascertained for load-side terminals of the electronic circuit breaker. The circuit is deactivated again by the electronic switch element when criteria. Finally, the impedance of the line between the circuit breaker and the short-circuit location is calculated from the voltage values and the current measurement values and the time interval thereof.

Abstract: A power transmitter for wireless power transfer includes a control and communications unit configured to provide power control signals to a power supply external to the power transmitter for controlling a power level of a power signal configured for transmission to a power receiver, the power supply configured to configure a direct current (DC) power based on the power control signals. The power transmitter further includes an inverter circuit configured to receive the DC power from the power supply external to the power transmitter and convert the input power to a power signal. The power transmitter further includes a coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face and shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.

Abstract: A power transmitter for wireless power transfer includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, receive a receiver power request from a power receiver, provide a power request to an external power supply, based on the receiver power request, determine if a power signal at the coil is compliant with the receiver power request, and, if the power signal at the coil is compliant with the receiver power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.

Abstract: A vehicle controller, responsive to a command from a remote controller, alters a frequency at which a vehicle inverter applies an AC potential to a power network such that an AC power output to the power network by a remote distributed energy resource, such as a solar power system, synchronized with the vehicle inverter decreases.

Abstract: A power source supervisory apparatus is provided with a connection path that connects between a first path and a second path, an inter-path switch SW provided on the connection path, a current limiting element disposed to be in series to the inter-path switch SW on the connection path enabling a conduction from a first path side to a second path side under a current limiting state and obstructing conduction from the second path side to the first path side, a supervisory unit that supervises occurrence of a voltage drop on the first path in a state where the inter-switch is closed, and a switch operation unit that opens the inter-path switch SW when the supervisory unit determines that a voltage drop occurs on the first path.