Abstract: The invention includes an output circuit that outputs an operation signal to a direct current breaker that interrupts a direct current main circuit, and a processor that samples, at predetermined time intervals, digital data wherein a value detected by a direct current transformer that detects a current of the direct current main circuit is measured as an input current, calculates a computed measurement value to be output to a display circuit, and outputs control information for executing a protection process using measurement value sampling data obtained by the sampling to the output circuit, and executes a protection process of the direct current main circuit at every sampling.

Abstract: The disclosed technology relates to a gate protection circuit for an Insulated Gate Bipolar Transistor (IGBT), the IGBT being used as a switch device in a solid state pulse modulator based on the MARX generator principle, the gate protection circuit including: a voltage regulator configured to supply a stable voltage to an emitter of the IGBT with respect to the ground for a gate of the IGBT.

Abstract: A drive device (9) drivably controls linear solenoid valves (SL1 to SL5) by inputting respective drive signals to one-side ends (5a) of the linear solenoid valves (SL1 to SL5) via a connector (Co) and wires (Ha). Other-side ends (5b) of the linear solenoid valves (SL1 to SL5) are connected to respective wires (56). The wires (56) are connected to the connector (Co) while being integrally commonalized by the common wire (57). This allows reducing the number of ground terminals gt of the connector (Co), whereby the connector (Co) can be downsized.

Abstract: An electronic apparatus includes a coupler to which an external apparatus is detachably attached, an interface, a wireless power transmitter; a communicator; and a processor configured to control the wireless power transmitter to transmit power received from an external apparatus that is connected through the interface to a display panel of the external electronic apparatus that is attached through the coupler, and control the communicator to transmit a video signal received from an external apparatus which is connected through the interface to the display panel.

Abstract: An overcurrent and/or short-circuit detector includes: at least one current sensor for picking up a current signal which has a predeterminable time resolution in at least one electrical current path; and at least one evaluation unit. The at least one evaluation unit: determines a first point in time of a predeterminable steep increase in the current signal, forms a temporal integral of current values of the current signal from the first point in time to a second point in time, compares a pair of values, including a relevant value of the integral and the relevant value of the current signal, with at least one predeterminable limiting condition at predeterminable temporal intervals substantially continuously, and emits an overcurrent and/or short-circuit signal to an outlet of the overcurrent and/or short-circuit detector if the pair of values exceeds a limiting condition.

Abstract: A connection structure of a plurality of switching modules that reduces required insulation voltage significantly when the plurality of switching modules is connected to each other in series is proposed. A switching module connection structure includes: n (n?1, integer) switching modules arranged in two or more columns and all connecting to each other in series from a first switching module in a first column to a last switching module in a last column; and insulating members disposed between at least some switching modules for each column.

Abstract: An electric vehicle (10) has a traction battery (16), an electric traction motor (12) and a motor power electronics system (14) that feeds electrical energy to the traction motor (12) and is electrically connected to the traction battery (16). A coil-free, two-wire power ripple filter (20) having two line sections (22, 22?) is arranged between the motor power electronics system (14) and the traction battery (16). Each two line section each is formed by a conductor core (28) and a conductor insulator (24). Each conductor insulator (24) has a thickness (D) of at least 1.0 mm and each is connected conductively to the vehicle ground (30) by way of an electrical ground connection (31, 32). The ohmic resistance of the ground connection (31, 32) between the conductor insulator (24) and the vehicle ground (30) is in each case at most 10 mOhms.

Abstract: Isolators for high frequency signals transmitted between two circuits configured to operate at different voltage domains are provided. The isolators may include resonators capable of operating at high frequencies with high transfer efficiency, high isolation rating, and a small substrate footprint. In some embodiments, the isolators may operate at a frequency not less than 20 GHz, not less than 30 GHz, not less than 65 GHz, or between 20 GHz and 100 GHz, including any value or range of values within such range. The isolators may include inductive loops with slits and capacitors integrally formed at the slits. The sizes and shapes of the inductive loops and capacitors may be configured to control the values of equivalent inductances and capacitances of the isolators. The isolators are compatible to different fabrication processes including, for example, micro-fabrication and PCB manufacture processes.

Abstract: The invention relates to a device (1) for operating a motor vehicle, comprising an electrical drive system with an electrical high-voltage traction network (2) and an operating network (3) that has a high-voltage unit (7) comprising a power electronics system (5), and a low-voltage unit (6) comprising a control electronics system (4), and a first transformer (8) designed to convert an input voltage (U1) from the low-voltage unit (6) into a first, particularly higher output voltage (U2) for the power electronics system (5). According to the invention, the dev ice comprises at least one second transformer (11) designed to convert the first output voltage (U2) of the first transformer (8) into a second output voltage (U3) for the control electronics system (4), the second output voltage (U3) being higher than the input voltage (U1).

Abstract: The present apparatus, system and method solves the problems of the prior art by enabling substantial dissipation of an electrical energy surge coming from communications antenna which has been struck by lightning. The apparatus is for mounting to an exterior of a building at or near communications antenna also located at the exterior of the building. The apparatus is connected with incoming coaxial cables extending from exterior mounted antenna and with outgoing coaxial cables which extend from the apparatus to communications equipment housed within a communications center. The lighting strike surge travels from antenna, along the incoming coaxial cable and is redirected within the apparatus by polyphasers which trip at capacity to redirect the surge to three separate grounding bars and prevent the surge from continuing along outgoing coaxial cables leading to communications equipment thus safely dissipating surge and shielding communications equipment.

Abstract: A system and a method for locally controlling delivery of electrical power along the distribution feeder by measuring certain electricity parameters of a distribution feeder line using a substation phasor measurement unit (PMU) electrically coupled to a substation distribution bus at a first node on the feeder line, and at least one customer site PMU electrically coupled to a low voltage end of a transformer at a customer site, wherein the transformer is coupled by a drop line to a second node on the distribution feeder line and the customer site is coupled by another drop line to the transformer, and by controlling at least one controllable reactive power resource and optionally a real power resource connected to the second node or at the customer site. Related apparatus, systems, articles, and techniques are also described.

Abstract: Systems and methods are described for an extended-range positioning system based on foreign-object detection (FOD). In particular, a power-transfer apparatus is disclosed that includes a coil and a foreign-object-detection (FOD) system. The coil is configured to generate a magnetic field based on an electric current running through the coil for transferring power to a receiver device. the FOD system includes a plurality of FOD sense loops, FOD circuitry, and active-beacon receive circuitry. The FOD sense loops detect metal objects within the magnetic field based on changes to an electrical characteristic(s) of one or more of the FOD sense loops. The FOD circuitry processes a modulation pattern of the electrical characteristic(s) of the one or more FOD sense loops and provides first positioning information. The active-beacon receive circuitry processes induced voltage in at least two sense loops to provide second positioning information.

Abstract: A system and method for distributing power to racing aircraft systems is provided. The system includes a race course, a in power transmitter directed towards a power delivery section of the race course, the power transmitter configured to remotely transmit power to the aircraft systems at the power delivery section, and a controller operatively coupled to the power transmitter to activate, direct and deactivate the power transmitter. The method includes detecting, at the controller, a trigger condition for activating the power transmitter; responsive to detecting the trigger condition, activating the power transmitter; and transmitting the power to the aircraft systems.

Abstract: The disclosure relates to an inverter with at least one inverter bridge and at least two galvanically isolating DC/DC converters, outputs of the DC/DC converters being connected in parallel with one another and being connected to inputs of the inverter bridge. At least two of the DC/DC converters are intercoupled on the input side via a diode, such that the diode is connected with its terminals to one of the inputs of the two direct voltage converters in each case. The disclosure also relates to a use for such an inverter.

Abstract: A power supply device for a vehicle includes an energy storage device, and a converter coupled to an external power source and that converts a first voltage provided by the external power source into a second voltage. The power supply device includes at least one switching element coupled between the converter and the energy storage device, and a controller that monitors a charge level of the energy storage device while the vehicle is not in operation. The control controls switching of the at least one switching element based on the charge level to either i) connect the converter to the energy storage device to exit a sleep mode and enter a charge mode to charge the energy storage device with the second voltage, or ii) disconnect the converter from the energy storage device to exit the charge mode and enter the sleep mode.

Abstract: A conductive fastening system, a fastened assembly, and a method of fastening an assembly composed of layers of carbon fiber reinforced plastic (“CFRP”) and/or metallic material includes fasteners with an electrically conductive coating and electrically conductive gap filler materials between the fasteners and sidewalls of holes formed through the layers of the assembly. The sidewalls of the holes are coated with the electrically conductive gap filler material by abrading, injection or spraying. The fasteners with the electrically conductive coating are inserted through the holes. The conductive coating on the fasteners and electrically conductive gap filler material work together to enhance electrical conductivity between the fastener and assembly. The conductive coating also acts as a lubricant to reduce the amount of force required to insert the fastener into the hole thereby reducing damage to the assembly.

Abstract: A wireless power supply device includes: a power transmitting antenna; a power supply circuit configured to supply a microwave to the power transmitting antenna; a power receiving antenna; a power receiving circuit configured to receive supply of power of the microwave via the power receiving antenna; a load configured to operate using the power supplied by the power receiving circuit; and an electrically-conductive case surrounded by an electrically-conductive plate in which the power transmitting antenna and the power receiving antenna are accommodated. In the electrically-conductive case, a microwave radiated from the power transmitting antenna is received by the power receiving antenna, and power of the microwave is supplied to the load from the power receiving circuit.

Abstract: A radio wave measurement system includes: an aerial moving body to move or to hover above a measurement target antenna for radiating a radio wave in a sky direction; and a position measurer to measure a position of the aerial moving body. The aerial moving body is mounted with a measurement antenna to receive the radio wave and a radio wave measurer to measure received radio wave data. The radio wave measurement system further includes a radiated radio wave data generator to generate radiated radio wave data including the received radio wave data and the radio wave source relative position data representing measurement point data that is data of a position of the aerial moving body at a point of time when the received radio wave data is measured, as a relative position with respect to the measurement target antenna.

Abstract: A primary node of a seafloor observatory network based on constant current power supply is provided. The primary node is connected in series to a submarine cable of a backbone network. The primary node is connected to a shore station and an adjacent primary node by submarine cable terminal boxes, respectively. The primary node includes an underwater power supply and a communication control module. The underwater power supply is used for converting constant current power provided by the shore station into power for the primary node and some backup power, and outputting direct-current constant voltage power for the communication control module, and is further used for controlling the primary node to access and exit from the network. The communication control module is used for monitoring the internal state of the primary node by control system backup, and sending the state information and data to the shore station.

Abstract: An apparatus for generating a resolver excitation signal and a vehicle including the same are provided. The apparatus includes an input portion that is configured to receive an input signal and a current amplifier that is configured to generate an output signal by amplifying the input signal and that has a circuit protector that protects a circuit from an overcurrent. An output portion is configured to output the output signal. Additionally, the circuit protector includes a first transistor that has an emitter connected to the output portion, a second transistor that has a collector connected to the output portion and a base connected to a base of the first transistor and a rectifier connected to a base of the first transistor and the base of the second transistor.