162results about "Two-wire dc circuits" patented technology

A DC power distribution and protection system that comprises a DC power source 2, a power bus 3, 4 connecting the power source 2 with a load R or with a further power source 20, at least one capacitor

A detection circuit of an external display device includes a first connector, a display circuit, a switch circuit, a power supply circuit, and a control circuit. The display circuit is configured to provide a display signal to the external display device via the first connector. The power supply circuit is configured to provide power required for the display circuit to operate via the switch circuit when the switch circuit is turned on. The control circuit is configured to turn on the switch circuit to turn on the power supply circuit and the display circuit when the external display device is detected. After the switch circuit is turned on, the control circuit is configured to accumulate a duration of continuous time during which the external display device is not detected or a number of times of detection, and turn off the switch circuit to turn off the power supply circuit and the display circuit when the duration of continuous time reaches a time threshold or the number of times of detection reaches a number threshold.

The invention relates to a converter (100) comprising a conversion stage (104) and an output protection circuit (106). The output protection circuit (106) comprises a first input terminal (201) and a second input terminal (202), and a first output terminal (203) and a second output terminal (204). The first input terminal and the first output terminal are on a first voltage level and the second input terminal and the second output terminal are on a second voltage level. The converter further comprises a switch S1 connected between the first input and output terminals or between the second input and output terminal, and an interruptible freewheeling circuit (120) between the first output terminal and the second output terminal. The freewheeling circuit comprises a freewheeling path (122) including a freewheeling switch and a freewheeling diode, and a voltage clamping device parallel to at least the freewheeling switch.

An electrical power system and an aircraft including an electrical power system are provided. The electrical power system includes: an electrical power source; a DC electrical network; a power converter including at least one input terminal and first and second DC output terminals, the at least one input terminal connected to the electrical power source, the first and second DC output terminals connected to the DC electrical network; a DC link capacitor connected between the first and second DC output terminals; a power semiconductor switch connected in series with the DC link capacitor between the first and second DC output terminals; and a control unit configured to respond to a fault in the DC electrical network by opening the power semiconductor switch, whereby discharge of the DC link capacitor is prevented.

Conveyor arrangement (1), adapted to convey an object (9), the conveyor arrangement (1), comprising, - a plurality of conveyor zones (2), each conveyor zone (2) is adapted to convey an object (9) from an inlet (1) of said conveyor zone (2) to an outlet (0) of said conveyor zone (2), each conveyor zone (2) is provided with a drive unit (3M), each drive unit (3M) is adapted to transform electrical power into mechanical power required for conveying said objects (9); - a plurality of, in particular at least two, power supply devices (21) adapted to supply electric power (P21) to the drive units (3M); - in particular at least one controller (10, 11) adapted to control operation of said conveyor zones (2); the conveyor arrangement (1) further comprising a power supply network (20), comprising - the plurality of power supply devices (21); - the plurality of drive units (3M); - at least one power supply line (23) connecting the plurality of power supply devices (21) with the plurality of drive units (3M).

This power distribution system comprises: a power converter (4) that converts the voltage of a primary-side DC bus (1) into AC or DC and outputs the AC or DC to power feeding lines (9); and a voltage controller (104) that controls the power converter (4) so as to change the output voltage to the ground of each line of the power feeding lines (9) while keeping the output voltage of the power converter (4) constant.

The application discloses a kind of suitable for symmetric unipolar-bipolar DC operating mode conversion and control method and system, applied to DC control technical field, method includes obtaining the data of symmetric unipolar-bipolar DC system;Real-time operating parameter data and system reference parameter data are handled, and fault data is obtained;Device physical parameter data are handled, and DC system digital simulation model is obtained;DC system digital simulation model is handled, and stability boundary condition is obtained;Based on fault data and stability boundary condition, DC voltage data is obtained;Based on fault data and rated voltage, determine thermal stability limit voltage data;Based on power factor data, DC voltage data and thermal stability limit voltage data are handled, and target voltage data is obtained;With target voltage data as reference, power adjustment processing is carried out.The method provided by the application can solve the technical problem that the voltage reduction operation control strategy cannot adapt to different operating conditions of the system.

The present invention relates to a smart energy management system (1) that combines all energy equipment in the energy infrastructure and enables this equipment to be smartened with artificial intelligence. Thanks to the smart energy management system (1), all devices that can access the Internet are included in the cloud network and these devices are enabled to communicate with each other through artificial intelligence. With the smart energy management system (1), a world-class infrastructure is achieved with uninterrupted communication, where high-level infrastructure is smartened, managed, sustainability and continuity are ensured. With the commissioning of the smart energy management system (1), significant energy savings are achieved.

The application provides a cross-voltage domain power supply circuit and a circuit control method, and relates to the technical field of submarine communication. The cross-voltage domain power supply circuit comprises a control module, a main power supply module, a backup power supply module and a load function circuit module; a main supply state signal of the main power supply module and a backup supply state signal of the backup power supply module are collected by a main circuit detection submodule and a branch circuit detection submodule; the control circuit submodule receives and processes the main supply state signal and the backup supply state signal, generates a switch control signal, and controls the on-off state of the first bypass switch and the second bypass switch and the connection state of the switching switch according to the switch control signal. The cross-voltage domain power supply circuit provided by the application controls the state of the switch in the circuit according to the supply state signal by the control circuit submodule, so that the main power supply module and the backup power supply module can realize intelligent switching, the heat loss in the power supply circuit is reduced, the reliability of power supply is improved, the circuit structure is simple, and the space occupation is reduced.

Modular power supplies and configurations of connecting the same. One example provides a power supply system comprising a battery extender configured to output first direct current (DC) power and a power station electrically connected to the battery extender. The power station includes a battery, a DC input port configured to receive the first DC power from the battery extender and an alternating current (AC) port configured to receive first AC power from an external power supply. The power station also includes a DC output port configured to provide second DC power to a first connected device, and an AC output port configured to provide second AC power to a second connected device.

According to the present invention, the functional module is charged through the power supply module before and during communication of the functional module by using a bus connecting the power supply module and the functional module, in order to achieve multi-master power supply communication between multiple functional modules using two power lines, thus solving the technical problems of a lack of a streamlined multi-master power supply communication system and a weak driving capability in the current bus communication mode.

A charging method and system, an electronic device, and a computer storage medium are disclosed. The system includes a first device (100) and a second device (200). The first device includes a boost chip (730) and a first battery (740). The second device includes a charge pump chip (830) and a second battery (840). The first battery is configured to output a first voltage to the boost chip. The boost chip is configured to: receive the first voltage and output a second voltage to the second device, where the second voltage is greater than the first voltage. The charge pump chip is configured to: receive the second voltage and output a third voltage to the second battery, where the second voltage is M times the third voltage, and M is a positive number greater than 1. The second battery is configured to: receive the third voltage and perform charging.

An electrical power system 10, comprising: a rotary electrical machine 12 configured to output AC; a diode-bridge rectifier 13 having an AC input connected to the electrical machine 12 and a DC output (DC+, DC-); an active filter circuit 14 comprising a plurality of power semiconductor switches 141L-H, 142L-H connected in a bridge configuration between first and second output terminals 14out, the first and second output terminals 14out connected to the DC output (DC+, DC-) of the diode-bridge rectifier 13; and a controller 15 configured to control a switching operation of the plurality of power semiconductor switches 141L-H, 142L-H of the active filter circuit 14 to control an output voltage Vfilt across the first and second output terminals 14out of the active filter circuit 14.

The invention discloses a power supply system, a base station and a control method, and relates to the technical field of power supply. The method comprises the steps that the input ends of M voltage conversion modules are connected with a first bus, and the output ends of the M voltage conversion modules are connected with a second bus; the voltage conversion module can convert the first voltage of the first bus into the second voltage of the second bus; the control module can control part of the M voltage conversion modules to be turned off or turned on according to the load connected to the second bus detected by the N detection modules, and the smaller the load connected to the second bus is, the more the turned-off voltage conversion modules in the M voltage conversion modules are. Thus, in the power supply system, the power supply buses with different voltages are adopted to supply power to the load, direct current loss in the power supply process can be reduced, the voltage conversion efficiency of the voltage conversion module is improved, and therefore the power supply efficiency is improved.

To provide a power supply superimposed communication device capable of suppressing an increase in mode conversion loss due to variations in electrical characteristics.SOLUTION: A power supply superimposed communication device 1-1 includes differential wiring 5-1 with signal wiring 6-1 and 7-1 connected to differential signal wiring 8, a power supply element 30-1 for supplying first applied voltage and second applied voltage to the signal wiring 6-1 and 7-1, a high frequency cut filter 11-1 connected to the wiring 6-1, a high frequency cut filter 11-12 connected to the wiring 7-1, and coils 12-1 and 12-2. The coil 12-1 is connected to the cut filter 11-1, the coil 12-2 is connected to the cut filter 11-2, and the coils 12-1 and 12-2 are reversely wound and have an inductor 10-1 that is magnetically coupling, and a power supply is superimposed on the differential signal wiring 8. An inductance value L1 of the cut filter 11-1 and an inductance value of L3 of the coil 12-1 are L1<1.5×L3, and an inductance values L2 of the cut filter 11-2 and an inductance value L4 of the coil 12-2 are L2<1.5×L4.SELECTED DRAWING: Figure 1

An exemplary power conditioning method and system are disclosed using a power converter in combination with a diode bridge rectifier and a series transformer in which the power converter is configured to inject VARs to a high-speed rotating machine to compensate for the machine reactance. By injecting VARs into the machine using the power converter through the series transformer, the power converter can be fractionally rated, in terms of power rating, to a lower power rating which would otherwise have to be higher due to the reactance requirements due to its high-frequency input. And additionally, because of the lower power rating, the transformer can be beneficially rated for the corresponding power level of the machine. The operation of the diode bridge rectifier and a transformer does not add to the complexity of the control of the system or that of the power converter.

Techniques are provided for improving power efficiency of a multiphase direct current (DC)-DC voltage converter configured to provide DC power to a time domain duplexing radio by enabling a number of phases during a downlink subframe and disabling the number of phases on or after cessation of the downlink subframe.

Electronic control unit comprising: a control computer (11, 12) which is a microcomputer for controlling an operation of a predetermined actuator (32) mounted in a vehicle based on data supplied from sensors (4, 5) mounted in the vehicle; a first power supply circuit (15) provided as a power supply circuit for generating a voltage for driving the control computer (11, 12) from a voltage supplied from a power supply source (2) mounted in the vehicle, and supplying the control computer (11, 12) with voltage; an abnormality detection part (20) for detecting an abnormal operation of the first power supply circuit (15) based on the voltage output from the first power supply circuit (15); a second power supply circuit (16) provided as the power supply circuit separately from the first power supply circuit (15), wherein the second power supply circuit (16) is activated in response to a detection result of the abnormality detection part (20) and supplies power to the control computer (11, 12), and an internal power supply line (Ln) connecting an output terminal of the first power supply circuit (15), an output terminal of the second power supply circuit (16) and a power supply terminal of the control computer (11, 12), where the first power supply circuit (15) starts supplying power to the control computer (11, 12) in response to application of an activation signal applied from a predetermined signal source as a trigger for starting control; the abnormality detection part (20) outputs a signal for stopping an operation of the second power supply circuit (16) when the abnormality detection part (20) does not detect an abnormal operation of the first power supply circuit (15); and the abnormality detection part (20) outputs a signal for activating the second power supply circuit (16) when the abnormality detection part (20) detects the abnormal operation of the first power supply circuit (15).

A smart light switch comprising a screen module, a wall module and, optionally, a mount. The screen module comprising a display, an input device, an energy storage device, a screen module controller and a first screen module connector configured to be operably connected with a wall module, wherein the connector is configured to supply electrical power to the screen module from the wall module. The wall module comprising a wall module controller, a first wall module connector configured to be operably connected to a screen module, wherein the connector is configured to supply electrical power to the screen module from the wall module, and a first electrical connector configured to be operably connected to the electrical wiring of a lighting circuit.

A load is detachably connected to a device connector of a switch device. A resistance value of a switch circuit when a sub-switch is ON is greater than an ON resistance value of a main switch. A microcomputer acquires node voltage information indicating a node voltage of a connection node located downstream of the main switch and the sub-switch from a voltage detection unit in a state where the main switch is OFF and the sub-switch is ON. The microcomputer determines whether a switch current that flows via the main switch when the main switch turns ON will be less than a current threshold value, based on the acquired node voltage information.

Device for controlling precharging of a storage capacity and fault detection in a direct current circuit The present description relates to a device for controlling precharging of a storage capacity and fault detection in a direct current circuit which comprises the storage capacity, at least one direct voltage source and at least one first precharging switch coupled to an electrode of the storage capacity, the device comprising at least: - a pulse transformer provided with a primary and at least one first and one second secondaries; - a circuit for controlling precharging of the storage capacity, coupled to the primary of the pulse transformer;wherein the first secondary of the pulse transformer has a first terminal configured to be coupled to a control input of the first precharge switch, and wherein the second secondary of the pulse transformer is configured to be coupled in parallel with the storage capacitor. Figure for abstract: Fig. 1;

A method for distributing power from a set power rate power source to a plurality of loads 16a, 16b, 16c comprising determining, for each of the loads, an individual energy requirement over a first up

Method for operating a vehicle electrical system (10, 50) comprising a first actuator and a second actuator, and the first actuator and the second actuator are connected to each other via a common control unit, wherein energy fed back from the first actuator is transferred via the common control unit to the second actuator and is at least partially consumed in it.

The invention relates to a high-voltage system (1') for a motor vehicle, comprising: - an electrical high-voltage energy storage device (2) with storage-side HV connections (5a, 5b), - a high-voltage on-board network (3) having on-board network-side HV connections (6a, 6b) and a capacitance arrangement (10) with one X-capacitance (Cx) and two Y-capacitances (Cy1, Cy2), - a switching device (4) connected to the HV connections (5a, 5b, 6a, 6b) for connecting the high-voltage energy storage device (2) and the high-voltage on-board network (3), - a discharge device (11') for discharging the capacitor arrangement (10), which has a discharge resistor (Re) connected to the vehicle electrical system-side HV connections (6a, 6b) and a passive discharge circuit (12a, 12b) for each Y-capacitor (Cy1, Cy2), wherein the discharge circuits (12a, 12b) are designed to discharge the Y-capacitors (Cy1, Cy2) and each have at least one diode (D) for this purpose, wherein the diodes (D) are reverse-biased with respect to a normal polarity of voltages (Uy1, Uy2) dropped across the Y-capacitors (Cy1, Cy2) when the switching device (4) is closed, and wherein the at least one diode (D) of a discharge circuit (12b) is caused by a polarity change of the voltage (Uy2) at the associated Y-capacitor (Cy2) by charging the Y-capacitances (Cy1, Cy2) and by the discharge resistance-related potential coupling of the on-board network-side HV connections (6a, 6b), can be polarized in the forward direction to discharge the Y-capacitances (Cy1, Cy2),wherein the discharge device (11') has a contacting element (14) which, in a first state, electrically connects the discharge circuits (12a, 12b) to the ground potential (M) and, in a second state, separates the discharge circuits (12a, 12b) from the ground potential (M) for a dielectric strength test of the high-voltage system (1) with the switching device (4) closed.

An integrated circuit is described for dynamically adapting power supplied by at least one node in a network. This integrated circuit may include a control circuit (or control logic) that performs operations, which include receiving charge information associated with one or more nodes in the network, determining dynamic power supplied to an electronic device by at least one node in one or more nodes, at least in part, based on the charge information, and issuing a command to at least one node specifying or indicating the dynamic power of at least one node at a given time.

A DC socket includes: first and second socket contacts respectively electrically coupled to a positive and a negative electrodes of a power supply; a trigger circuit generating a first trigger signal upon a plug being inserted to a first predetermined position; an on-off control unit connecting to the trigger circuit and including a first line and a second line respectively connected between the first socket contact and the positive electrode, where the first line is provided with a semiconductor switching element, the second line is provided with a relay, and the on-off control unit controls the semiconductor switching element to be switched on upon receiving the first trigger signal; a voltage detection unit connected between the first line and the on-off control unit, where the on-off control unit controls the relay to be switched on upon voltage of the first line being equal to a power supply voltage.

A power distribution system for a vehicle, includes: at least one power source, at least one consumer connectable to the at least one power source via a power supply line, and a switching unit arranged in the power supply line between the at least one power source and the at least one consumer and configured to connect and / or disconnect the at least one consumer to or from the power source. The switching unit has a switch configured to connect and / or disconnect the at least one consumer to or from the power source in accordance with at least one predetermined software limit and at least one hardware limit of a set value and type.

Method for transmitting payload data in an electric power supply connector between a power source and a wireless apparatus is disclosed. Method includes: obtaining (204), by the power source, payload data to be transmitted; encoding (214), by the power source, the payload data using a predefined voltage modulation method; altering (216), by the power source, a voltage level of the electric connector in order to trigger the wireless apparatus to sample the electric connector; modulating (224), by the power source, the voltage level of the electric connector in order to transmit the encoded payload data to the wireless apparatus; and after detecting (236), by the wireless apparatus, that the voltage level of the electric connector is altered, starting (238), by the wireless apparatus, to sample the voltage of the electric connector in order to receive (240) the encoded payload data, and decode (242) the encoded payload data.