Abstract: A power switch of a processing device comprises a plurality of series-connected switching stages, with each switching stage comprising a plurality of parallel-connected switching devices and an inverter chain. The switching devices are coupled between a power supply input and a power supply output of the power switch. Each of the switching devices of a given one of the switching stages is driven by an output of a corresponding one of the inverters of the inverter chain of that stage. A control input of the first switching stage receives a control signal for controlling a state of the power switch, and a control input of each remaining switching stage is driven by a control output of an immediately preceding switching stage. The switching devices in one or more of the switching stages are configured to have different switching characteristics than the switching devices in at least one other stage.

Abstract: An electrical power cell system including first and second electrical power cells having first and second terminals, one or more transient voltage suppressors connected in parallel with a relay, the relay having two states, the first state of the relay connects the first and second electrical power cells in series, and the second state of the relay bypasses the first electrical power cell so that the first electrical power cell is not connected in series with the second electrical power cell.

Abstract: Provided is a signal output circuit capable of outputting a normal signal in accordance with an input signal, even when part of the circuit fails. A signal output circuit includes a CPU, a switching circuit, and an output terminal. The switching circuit includes: a first switching unit having a first switching element and a second switching element, and a second switching unit having a third switching element and a fourth switching element. The drain, source, and gate of each of the first and second switching elements are connected to a power source, drains of the third and fourth switching elements, and a first output port of the CPU, respectively. The source and gate of each of the third and fourth switching elements are connected to the output terminal and a second output port of the CPU.

Abstract: A switching circuit 33 comprises a connection circuit cascade-connecting control terminals for controlling switching of n number of transistors M1-Mn via n?1 number of coils L1 respectively (n is an integer equal to or more than 2; and coils L3 respectively connected between one end of each of the transistors M1-Mn and other end of a coil L2, one end of the coil L2 being electrically connected to a DC power source. The transistors M1-Mn is sequentially switched with PWM signals inputted to an input terminal of the connection circuit. The switching circuit 33 further comprises a transistor M0 inserted at the one end or the other end of the coil L2 in cascade-connection.

Abstract: A control unit for a rotary electric machine includes a first current command module, a second current command module, a change module, and a return module. The first module performs a first current command on a maximum efficiency characteristic line on a d-q plane thereby to drive the machine at a maximum efficiency. The second module performs a second current command on a switching line set at a retard angle side relative to the maximum efficiency characteristic line. The change module changes a control mode from a rectangular wave voltage phase control mode to an overmodulation current control mode when an operation point of the machine reaches the switching line. The return module returns the current command from the second command to the first command after performance of the second command for a predetermined period.

Abstract: A modular substation feeder assembly comprising a substantially rigid and collapsible support frame is presented. In particular, the support frame of the present invention comprises a plurality of at least two members disposed in a movable or removable relation to one another and structured to dispose the support frame between the collapsed position and into the operative expanded position. The feeder assembly comprises a support stand cooperatively structured to support or house a recloser or circuit breaker. When the support frame is disposed in the collapsed position, the support stand is oriented at least partially within a internal clearance zone which is defined as an area free of electrical components, including insulators, cross bars, etc.

Abstract: A safety control system is provided, which is capable of monitoring many more drive circuits by using a single controller without modifying the configurations of the controller and the drive circuit. An a-contact of a relay is electrically connected between a FB (feedback) output terminal and a FB input terminal of a safety controller. A b-contact of the relay is electrically connected between a signal output terminal (safety output (1) terminal) of the safety controller and a signal input terminal (safety input (1) terminal) of a safety drive circuit. A coil of the relay is connected to a FB monitor output terminal of the safety drive circuit. No factor in a large voltage drop is present between the FB output terminal and the FB input terminal, thus making it possible to monitor many more drive circuits by using a single controller.

Abstract: A system for controlling distribution of power includes a line-powered electrical device that has a radio, a plurality of electrical components disposed electrically downstream from the line-powered electrical device and receiving power from the line-powered electrical device, and a first controller wirelessly receiving or sending signals to and/or from the radio included with the line-powered electrical device.

Abstract: A power management system includes a first switch, a second switch, and a controller coupled to the first and second switches. The first switch has a first transfer terminal. The second switch has a second transfer terminal. The controller controls power conversion by turning on a third switch periodically. The first and second transfer terminals and a third transfer terminal of the third switch are coupled to a common node. The resistance between the first transfer terminal and the common node, the resistance between the second transfer terminal and the common node, and the resistance between the third transfer terminal and the common node are substantially equal to zero.

Abstract: A conductor of a power transmission line has its effective resistance to flow of direct current or low-frequency current (such as, for example, 50 Hz or 60 Hz) varied in a wide range to pass current and/or to generate heat for melting ice. Increasing the initial resistance of a conductor is accomplished by modulating the current at a high frequency (HF), such as about 1 kHz to about 100 kHz. The current through the conductor then becomes a mixture of a DC (or low-frequency current) and a high-frequency current. Because the latter flows in a thin skin-layer region of the conductor of depth dependent on frequency, the conductor's resistance to the HF current is higher than its resistance value for low frequency or DC current. By varying the frequency of current modulation in accordance with the present invention, the conductor's resistance is adjusted to a desired value for ice removal.

Abstract: A voltage-stabilizing automatic change-over switch (200) includes a capacitive circuit (202) that receives an input voltage from supply mains, a rectifier with a filter unit (204) that receives an input voltage from the capacitive circuit and converts it to a DC voltage. The voltage drop across the capacitive circuit is directly proportional to the input voltage. Two single-pole relay switches (208) are directly connected to the rectifier with the filter unit (204). A voltage controller (206) maintains a voltage across the single-pole relay switches such that the voltage does not exceed a threshold voltage. The single-pole relay switches select either the supply mains or an input supply from a generator and connect to a load (210). The single-pole relay switches select the supply mains when coils of the single-pole relay switches are energized by the supply mains.

Abstract: Disclosed herein is a hall plate switching system including: a hall plate that generates first hall voltage at both ends of a first node and a third node facing each other and generates second hall voltage at both ends of a second node and a fourth node facing each other; a first switch unit that is connected with the first node and the second node and controls on/off of current flowing in the first node and the second node; a second switch unit that is connected with the third node and the fourth node and controls on/off of current flowing in the third node and the fourth node; and a resistor unit that is connected with the second switch unit and reduces trans-conductance of the first switch unit and the second switch unit.

Abstract: A switching circuit according to one embodiment has: N switching elements; a connection circuit including N?1 first inductance elements that are connected in series; a second inductance element; and N third inductance elements. Control terminals of the N switching elements are connected to ends of the connection circuit and connection contacts, respectively. One end of the second inductance element is connected to a power supply. The N third inductance elements electrically connects one ends of the N switching elements and the other end of the second inductance element with each other, respectively.

Abstract: Provided is a switching circuit including an arm having two switching elements connected. The switching elements are SiC semiconductors, and when a commutation current flows to the reverse conducting element, the switching element having the reverse conducting element connected in parallel thereto is turned on.

Abstract: To realize power supply to each gate drive circuit without using an individual dedicated power supply for each gate drive circuit. A power conversion apparatus includes an individual drive unit that does not require a dedicated power supply, and includes gate drivers connected to switches and interface circuits and a power converter gate drive configured with a common power supply for supplying power to the gate drive unit. Power is supplied from main circuits or a number of common power supplies fewer than that of the number of the switches through one or more power supply terminals included in the interface circuit. Also, the signal can be transmitted by isolation from a signal source to the gate drivers.

Abstract: A DC current path for DC power transmission includes at least a first switching element and a second switching element connected in series. A resonance circuit is configured to be connectable in parallel to the series connection of the at least one first switching element and second switching element by means of a switch.

Abstract: A circuit for operating a household appliance, having a switching power supply for transforming a grid voltage of a supply grid to a direct current supply voltage, a controller for controlling processes of the household appliance that can be coupled to the switching power supply and supplied by the DC supply voltage, and a button by means of which the switching power supply can be coupled to the supply grid by closing an electrical switch. The switch has two mechanically stable states and can be transitioned from one mechanically stable state to the other by actuating the button and/or by an at least indirect energy input from the controller.

Abstract: A transistor switch that provides isolation is described. The transistor switch is adapted to receive an input signal at an input terminal and either transmit the input signal to an output terminal when the transistor switch is in a first state or ground the input signal when the transistor switch is in a second state. The transistor switch comprises series switches, which couple the input terminal to the output terminal when the transistor switch is in the first state; shunt switches, which couple the input terminal to ground when the transistor switch is in the second state; and filters to provide isolation between the input terminal and the output terminal.

Abstract: A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.

Abstract: A display device includes a load, a transistor for controlling a current value supplied to the load, a capacitor, a first wiring, a second wiring, and first to fourth switches. Variations in the current value caused by variations in the threshold voltage of the transistor can be suppressed through the steps of: (1) holding the threshold voltage of the transistor in the storage capacitor, (2) inputting a potential in accordance with a video signal, and (3) holding a voltage that is the sum of the threshold voltage and the potential in accordance with the video signal, in the storage capacitor. Accordingly, a desired current can be supplied to the load such as a light emitting element.

Abstract: Exemplary embodiments adapted to distribute power from four input lines to a plurality of power supply units (PSUs) configured in an N+1 architecture are provided. In one such embodiment, a plurality of rectifier devices have first and second ends, each of the plurality of rectifier devices connected at the first end to one of the four input lines, and adapted to be bypassed by a first relay in a first operating mode and provide rectified input current in a second operating mode. A plurality of second relays is connected between each of the second ends of the plurality of rectifier devices. The plurality of second relays are adapted to be closed in the second operating mode to sum the rectified input current from each of the plurality of rectifier devices in a single node connecting each of the plurality of PSUs.

Abstract: A power node provides energy management and network expansion features in a networked data communications and control environment that may be utilized in an energy management system implementing a method of managing energy. Network expansion may be provided by integrating a networking bridge from a power line network to one or more wired network ports or a wireless network. The power outlet on the power node providing power to a device may be identified and associated with information about the device.

Abstract: A switch load shedding device for a disconnect switch may be used in electric vehicles. The disconnect switch must perform a galvanic disconnect between the battery and the intermediate circuit. To this end, at least one semiconductor switch is used. The current to be switched off is conducted via the semiconductor switch for disconnecting the electric connection. The disconnect switch is previously or subsequently switched off under reduced voltage buildup.

Abstract: A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.

Abstract: A device (13) to break an electrical current flowing through a power transmission or distribution line (14) comprises a parallel connection of a main breaker (8) and a non-linear resistor (11), where the main breaker (8) comprises at least one power semiconductor switch of a first current direction. The device (13) further comprises a series connection of a high speed switch (10) comprising at least one mechanical switch and of an auxiliary breaker (9), the auxiliary breaker having a smaller on-resistance than the main breaker (8) and comprising at least one power semiconductor switch of the first current direction. The series connection is connected in parallel to the parallel connection. In a method to use the device (13) first the auxiliary breaker (9) is opened, thereby commutating the current to the main breaker (8), afterwards the high speed switch (10) is opened and afterwards the main breaker (8) is opened thereby commutating the current to the non-linear resistor (11).

Abstract: A system may include a wireless receiver to receive a wireless signal from an occupancy sensor and at least one power switch to control power to at least one load in response to the wireless signal, where the wireless receiver and power switch are included in a local switching device, and where the local switching device comprises a power pack having a housing, a power supply to convert high-voltage power to a low-voltage source for operating internal circuitry in the power pack, and switch control logic to implement an unoccupied delay time.

Abstract: Provided is a digital circuit (30) that comprises: a switching circuit (31) having first transistors (32, 33) supplied with power supply potentials (VDD, VSS); correcting circuits (34, 36) connected between an input terminal (IN) inputted with an input signal and control terminals (gates) of the first transistors; capacitors (C2, C3) connected between the control terminals and the input terminal; diode-connected second transistors (35, 37) that are provided between nodes (N5, N6) between the capacitors and the control terminals and the power supply potentials and have the substantially same threshold voltage as the first transistors; and switches (SW2, SW3) connected in series with the second transistors.

Abstract: An actuator is manufactured that includes piezoelectric film that does not suffer physical damage. Provided is a manufacturing method comprising first insulating layer deposition of depositing a first insulating layer on a substrate using an insulating material; first annealing of annealing the first insulating layer; first electrode layer deposition of depositing a first electrode layer on the first insulating layer using a conductive material; first piezoelectric film deposition of depositing a first piezoelectric film on the first electrode layer by applying a sol-gel material on the first electrode layer and annealing the sol-gel material; second electrode layer deposition of depositing a second electrode layer on the first piezoelectric film using a conductive material; second insulating layer deposition of depositing a second insulating layer on the second electrode layer using an insulating material; and second annealing of annealing the second insulating layer.

Abstract: An intelligent control system for a high-voltage switch and a control method thereof. The control system includes a control terminal (10) and a plurality of high-voltage switches (21-1, 21-2, . . . , 21-n-1, 21-n), each of which is controlled by an executive terminal (11-1, 11-2, . . . , 11-n-1, 11-n) respectively, wherein the executive terminal is connected to the control terminal via a communication network. The executive terminal includes a current detecting module (5), an analog/digital conversion module (4), a second communication module (2), a calculation processing module (3), a first communication module (1) and a switch control module (6) which controls the switch in real-time. The current detecting module detects a line current value. The analog/digital conversion module converts the line current value into a digital current value. The first and second communication modules are for communication.

Abstract: A 2×2 switching element that includes first and second relays each having a first terminal, a second terminal and a third terminal, wherein the first and second relays each operate between a first state to connect the first terminal to the second terminal and a second state to connect the first terminal to the third terminal. The second terminals and third terminals, respectively, of the first and second relays are coupled to one another. The 2×2 switching element is selectively operable between: a first switching state where the first relay is operated in the first state and the second relay is operated in the second state, and a second switching state where the first relay is operated in the second state and the second relay is operated in the second state.

Abstract: A switch system having a plurality of switch inputs, a plurality of switch outputs, a switch matrix comprising a plurality of N×N switching elements to selectively couple one or more of the plurality of switch inputs to one or more of the plurality of switch outputs during use to provide one or more paths for routing signals from one or more of the switch inputs to one or more of the switch outputs during use.

Abstract: A method that includes identifying a desired signal connectivity through a switch matrix, where the switch matrix includes a plurality of switching elements, and where the switching elements are selectively operable in a plurality of states to provide a plurality of signal paths for routing signals through the switch matrix. The method also includes identifying a sorting network model that corresponds to a topology of the switch matrix, applying a sorting algorithm to the sorting network model, and determining, based on the results of applying the sorting algorithm, operational states of the plurality of switching elements to provide signal paths corresponding to the desired signal connectivity.

Abstract: The invention relates to a 3N?4-level (N?3) voltage converter including: 3N?5 direct voltage generators (1, 2, 3, 4) connected between two input voltage terminals (V+, V?), two lateral commutation branches (10, 11), each connected between an output terminal and an input voltage terminal (V+, V?) and comprising N?1 series connected commutation cells (20, 21, 22, 23), 2N?4 central commutation branches (12, 13), each comprising a switch bidirectional in terms of voltage and current and being connected between two commutation cells of a lateral branch (10, 11) and two generators, and N?2 pairs of diode cells (16) each connected to two of the 2N?4 central commutation branches (12, 13). The diodes (14, 15) of one pair are series connected, in the same direction, and are connected together by a middle point connected between two generators.

Abstract: A photovoltaic (PV) monitoring system uses combiner switches and charge controller switches to test the health of a PV installation. Combiner switches are used to direct test current through PV strings and substrings as health measurements are collected by a centralized sensor. Charge controller switches are used to supply test current at night.

Abstract: A switching device switches at least one current phase between responsive current phase input and responsive current phase output, wherein the switching device is suitable for switching electrical current of a power circuit of an electric motor. The switching device further includes a first communication system interface for a first communication system, a second communication system interface for a second communication system, and a selecting unit for selecting whether the switching device is a master or slave in relation to the second communication system.

Abstract: The invention relates to an electric circuit configuration for switching an electrical load (3), particularly a solenoid valve, by means of at least one switching means (5) associated with the consumer (3), particularly a transistor. The circuit configuration comprises at least one analysis circuit comprising at least one measuring resistor (17) connected in series with the switching means (5), at least one first analysis means (23) for determining a parameter corresponding to the short-circuit current, and at least one second analysis means (25) for determining a parameter corresponding to the consumer current. The circuit configuration is characterized in that the first analysis means (23) is connected in parallel with the measurement resistor (17).

Abstract: A method for minimizing an inrush current in a power supply selector and a power supply selector system is provided. The power supply selector includes a plurality of power input nodes, a power output node, a first transistor and a second transistor. Each of the power input nodes may be coupled to a first switch having a first on-resistance and to a second switch having a second on-resistance. The second on-resistance is greater than the first on-resistance. The first switch and the second switch are preferably coupled in parallel. The power supply selector may be configured to couple a selected one of the power input nodes to the source of the first transistor and to the gate of the second transistor so as to sense a sense voltage at the selected power input node.

Abstract: Controlling power switches with a programmable gate controller system proximate associated power switches and remote from the central controller including sensing at least one predetermined condition local to the associated power switches; reporting the sensed conditions to the remote programmable gate controller system; developing, in response to the sensed condition at least one control signal in the remote programmable gate controller system; and applying the control signal to the associated power switches

Abstract: A hybrid load system includes a dynamic electronic load module, and a plurality of passive resistive modules coupled with the dynamic electronic load module. The hybrid system includes a control system in communication with the dynamic electronic load module and the passive resistive modules for determining when and how many of the passive resistive modules should be applied in parallel with the dynamic electronic load module for creating a desired load.

Abstract: An output circuit includes a connection switch and an operation unit. The connection switch receives first and second voltages from first and second terminals, respectively, selects and outputs the first voltage or the second voltage for first to third intermediate terminals, including selection of the same voltage and switches assignment of the first and second voltages to the first to third intermediate terminals responsive to a connection switching signal. The operation unit receives the voltages assigned to the first to third intermediate terminals and outputs to an output terminal a voltage obtained by performing a predetermined operation on the voltages.

Abstract: The present invention is related to a standby power cut-off device that cuts off standby power generated from an electrical appliance by learning power on/off control data sent from a remote control, and upon receipt of the power on/off control data of the remote control, simultaneously controls commercial power (main power) supplied to the electrical appliance, and a control method thereof.

Abstract: A control unit of an uninterruptible power supply device includes a PWM circuit generating a plurality of PWM signals controlling a plurality of IGBT elements of a power conversion unit 3; a plurality of output terminals for supplying the plurality of PWM signals to the plurality of IGBTs; and a switching circuit arranging the plurality of PWM signals in order in accordance with the type of the uninterruptible power supply device and supplying the PWM signals to the plurality of output terminals. Accordingly, the control unit can be shared among a plurality of types of uninterruptible power supply devices.

Abstract: An electrical switching device which enables an electrical system, particularly a power distribution system, is structured rationally and simply. The switching device, in particular embodied in the form of a rail-mounted device, contains a housing and, included therein, a switching unit for interrupting an electrical circuit, and a supply connection for feeding a current to the switching unit. The supply connection has a first coupling contact for connecting to a current busbar, a load connection for connecting a feed conductor of a load circuit to the switching unit, and a return connection which has a connecting terminal for connecting to the return conductor of the load circuit and a second coupling contact connected to the connecting terminal inside the housing for connecting to a second current busbar.

Abstract: Aspects of the present disclosure involve systems, methods, and the like, for an energy interface system for interfacing alternative energy sources with a utility power source on a premises. The energy interface system provides flexibility in the use and distribution of utility energy sources and alternative energy sources based on several measurements and criteria of the interface system. For example, the energy interface system may allow for the energy consumption to adapt to changing parameters, such as utility rate schedules, cost of alternative fuels and utility premiums for consumption or generation of energy at particular times. The energy interface system also allows for deferment of charging or other high-energy loads to be recognized by the system at otherwise low-energy times. In addition, the energy interface system allows for monitoring and communication with the system for ease of configuring the system based on one or more criteria or measurements.

Abstract: A circuit configuration for activating a triggering element for a passenger protection arrangement includes a high-side circuit which establishes a first connection between an energy source and the triggering element, and a low-side circuit which establishes a second connection between the triggering element and ground. In addition, a regulator, which regulates a triggering current for the triggering element is provided, the regulator being assigned to the high-side circuit and/or the low-side circuit, and the high-side circuit and/or the low-side circuit each have/has two output stages, which are connected in parallel, for regulating the triggering current per triggering element, at least one of the at least two output stages having a current regulator at least one transistor connected in parallel.

Abstract: A gas insulated switchgear is configured including phase-A, phase-B, and phase-C breaker units. For example, the phase-A breaker unit includes breakers connected in series in a horizontal first direction, disconnectors annexed on the breaker, disconnectors annexed on a breaker, and disconnectors annexed on a breaker. The disconnector is connected to a main bus that extends in the first direction, and the disconnector is connected to a main bus that extends in the first direction. Each of the disconnectors on the breakers is arranged while a longitudinal direction thereof is set to a second direction orthogonal to the first direction so that a switching direction of the disconnector is equal to the second direction. Thereby, the length of the main buses can be shortened, and an interphase distance and a breaker-to-breaker distance can be reduced.

Abstract: A first calculation part calculates the phase-to-phase steady-state magnetic flux of the three phases of the power supply. A second calculation part calculates the phase-to-phase residual magnetic flux of the three phases in the primary windings side of the transformer when the circuit breakers interrupt the transformer. A phase detection part detects a voltage phase at which polarity and magnitude of the calculated steady-state magnetic flux and residual magnetic flux coincide. Closing control part firstly causes only the circuit breakers of the two phases to close at the detected voltage phase, and then causes the circuit breaker of the remaining one phase to close.

Abstract: A power system for connecting a variable voltage power source, such as a power controller, with a plurality of energy storage devices, at least two of which have a different initial voltage than the output voltage of the variable voltage power source. The power system includes a controller that increases the output voltage of the variable voltage power source. When such output voltage is substantially equal to the initial voltage of a first one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the first one of the energy storage devices. The controller then causes the output voltage of the variable voltage power source to continue increasing. When the output voltage is substantially equal to the initial voltage of a second one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the second one of the energy storage devices.

Abstract: A sound system that may be used for a vehicle is provided. The system includes a head unit configured for generating an electrical signal, and a relay is configured to receive an electrical signal from the head unit. An interior speaker is carried by the vehicle and is configured for receiving an electrical signal from the relay in order to produce sound. An exterior speaker is carried by the vehicle and is configured for receiving an electrical signal from the relay in order to produce sound. A switch is configured to be opened and closed in order to trip the relay between a first state in which the interior speaker produces sound and the exterior speaker does not produce sound and a second state in which the interior speaker does not produce sound and the exterior speaker produces sound. A method of controlling a sound system is also provided.

Abstract: The Application is directed at arrangements at which switch mode power converters share a common load. More particularly, the application provides a masterless arrangement in which no single converter controls the operation of the other converters. This is achieved by an arrangement in which each converter attempts to share its current measurement with other converters through an arbitration scheme employed on a data line, with the winning converter providing a defacto current measurement; for example, a maximum or minimum, to the overall arrangement.