Abstract: In some examples, a voltage regulator includes a first pair of switches controllable by a first clock signal having a first phase. The switches in the first pair are coupled to each other via a capacitor. The voltage regulator also includes a second pair of switches controllable by a second clock signal having a second phase. The first and second phases are non-overlapping. The switches in the second pair are coupled to each other via the capacitor.

Abstract: Examples of the disclosure include an uninterruptible power supply comprising an input configured to be coupled to a power source, an output configured to output power to a load, a main controller, a main logic power supply, an auxiliary logic power supply, and an auxiliary controller configured to receive power from the auxiliary logic power supply, the auxiliary controller being configured to receive a signal indicating that the load is not powered by the uninterruptible power supply, output a first signal to initiate shutdown of the main controller and the main logic power supply, and output a second signal to power-up the main controller and the main logic power supply after a predetermined period of time elapses after outputting the first signal.

Abstract: A system of providing power including: a preceding-stage power supply module, a post-stage power supply module and a load, connected in sequence; a projection on the mainboard of a smallest envelope area formed by contour lines of the preceding-stage power supply module and the load at least partially overlaps with a projection of the post-stage power supply module; the preceding-stage power supply module includes a plurality of sets of preceding-stage output pins and preceding-stage ground pins alternately arranged to form a first rectangular envelope area, and the load is disposed on a side of a long side of the first rectangular envelope area; and the load comprises a load input pin and a load ground pin forming a second rectangular envelope area, and a center line of the first rectangular envelope area and the second rectangular envelope area is perpendicular to the long side of the first rectangular envelope area.

Abstract: A rectenna controller connected to a rectenna that receives radio frequency power and converts the radio frequency power into direct current power, the rectenna controller controlling the direct current power received from the rectenna and supplying the controlled direct current power to a load, the rectenna controller including: an input terminal receiving the direct current power converted by the rectenna; an output terminal supplying the controlled direct current power to the load; a first switching element disposed in a current path connecting the input terminal to the output terminal; and a controller controlling the first switching element, wherein when the controller does not operate, the first switching element becomes conducting to render the current path conductive.

Abstract: Provided are: a submarine cable system with which it is possible, with a simple configuration, to acquire the state of each of a plurality of high-voltage relays in a branching device; the branching device; and a state response method therefor. The branching device comprises: a plurality of interlocking relays respectively corresponding to a plurality of high-voltage relays for switching feeding paths; a drive unit which supplies drive electric currents supplied to the plurality of high-voltage relays to the plurality of corresponding interlocking relays, respectively; a state detection unit which detects operation states of the plurality of interlocking relays as the operation states of the plurality of high-voltage relays; and a response unit which, on the basis of the result of detection of the operation states of the plurality of interlocking relays, transmits the operation states of the plurality of high-voltage relays.

Abstract: The disclosure provides a system of providing power to a chip on a mainboard. The system comprises at least one preceding-stage power supply module located on a surface of a mainboard, being DC-DC converters, and configured to receive a first DC voltage and to provide a second DC voltage; and at least one post-stage power supply module located on the same surface of the preceding-stage power supply module of the mainboard. Wherein the post-stage power supply module is electrically connected to the preceding-stage power supply module to receive the second DC voltage, the preceding-stage power supply module and the post-stage power supply module are disposed at same side of the chip, the post-stage power supply module provides a third DC voltage to the chip. A profile projection of the preceding-stage power supply module and the corresponding post-stage power supply module are overlapped with each other over 50%.

Abstract: Electrical systems for connecting rotary electric machines to dc networks operating at different voltages V and W where V>W are provided, along with gas turbine engine arrangements incorporating such systems.

Abstract: A flat switch is provided that prevents the flat switch from protruding and thereby causing a poor appearance even in a case where it is required to install a switch box so that an end part on an opening side of the switch box is not positioned on a predetermined distance or deeper side with respect to an appearance surface that is a surface of a wall. A flat switch (1) of the present invention is a flat switch (1) that is installed in a switch box (100) having a bottom part (101) and a vertical wall part (102) which is provided along an outer periphery of the bottom part (101). The switch box (100) is installed so that, with respect to an appearance surface that is a front surface of a wall, a peripheral edge part (102A) is not positioned on a predetermined distance or deeper side in a depth direction of the wall from the appearance surface.

Abstract: An electrical system for a mobile power generation device and a mobile power generation device are disclosed. The electrical system includes an electrical cabin and a generator switch cabinet located inside the electrical cabin and including a generator switch device, the generator switch device being configured to connect or disconnect the generator of the mobile power generation device from an external load, the generator switch cabinet further includes a first output end configured to be electrically connected to the external load through a connection conductor, the first output end includes a connection terminal or a connector, the electrical cabin includes a first bottom plate, the generator switch cabinet is arranged on the first bottom plate, and the first bottom plate includes a first hollow portion, and an orthographic projection of the generator switch cabinet on the first bottom plate is at least partially overlapped with the first hollow portion.

Abstract: Discussed are a power converting apparatus, a photovoltaic module, and a photovoltaic system including the photovoltaic module and the power converting apparatus. The power converting apparatus is capable of converting direct current (DC) power from the solar cell module into alternating current (AC) power, outputting the AC power to a grid, and detecting a signal indicative of abnormality in grid power caused by power cut or the like, thereby preventing an islanding operation.

Abstract: An AC/DC converter and a DC/DC converter are disposed corresponding to a power generator. The AC/DC converter converts AC power generated by the power generator into a generated voltage, and outputs the generated voltage to a power line. The DC/DC converter converts the generated voltage on the power line into a collection voltage, and outputs the collection voltage to a collection line. DC power in a DC voltage grid formed of the collection line is transmitted through a DC/AC converter to an AC power grid. When a short-circuit fault occurs in the DC power grid or the AC power grid, a control command value for the AC/DC converter or the DC/DC converter is adjusted so as to suppress incoming electric power flowing from the power generator in accordance with fluctuations of a collection voltage.

Abstract: A power adapter configured to provide power to a load is described. The power adapter may comprise a first plurality of contact elements comprising a first contact element configured to receive power and a second contact element configured to provide power to a load; a first interface comprising a second plurality of contact elements configured to provide one or more reference voltages to the control attachment, wherein the first interface comprises an electrical interface; a second interface comprising a switch configured to control power applied to a load in response to an actuation of the control attachment; and a control interface circuit coupled to the first interface and the second interface, wherein the control interface circuit generates a power control signal based upon one or more actuation signals generated by the control attachment. A method of controlling a power adapter is also described.

Abstract: A load control system includes a load control device and a remote control for configuring and controlling operation of the load control device. The load control device and remote control may be mounted to an electrical wallbox. The system may be configured by associating the remote control with the load control device, and actuating a button on the remote control to configure the load control device. A second remote control device may be directly or indirectly associated with the load control device. The load control device and remote control may communicate via inductive coils that are magnetically coupled together. The remote control may be operable to charge a battery from energy derived from the magnetic coupling between the inductive coils. The load control device and remote control may include near-field communication modules that are operable to communicate wirelessly via near-field radiation.

Abstract: A communication apparatus includes first communication means having a first communication function for wirelessly communicating with a partner apparatus, and second communication means having an electric power supply function for wirelessly supplying electric power to the partner apparatus and a second communication function for wirelessly communicating with the partner apparatus. The second communication function is for transmitting specific data sequence to the partner apparatus in response to reception of specific data from the partner apparatus, and the electric power supply function is for supplying electric power to the partner apparatus in a case of receiving from the partner apparatus, with the first communication means, a signal indicating that the partner apparatus has received the data sequence.

Abstract: A method for synchronizing PWM control signals of inverters, an inverter, and a power grid system are disclosed, so that PWM control signals of inverters connected to a power grid can be synchronized. A direct current voltage terminal of the inverter is connected to an external power supply, and an alternating current voltage terminal of the inverter is connected to an alternating current point of common coupling of a power grid, and the method includes: obtaining a phase of an alternating current voltage of the power grid (S101); determining a time period during which the phase of the alternating current voltage varies within a preset phase threshold interval; calculating a period of a preset carrier wave based on a preset carrier wave ratio and the time period (S103); and generating a PWM control signal of the inverter based on a PWM modulation signal and a preset carrier wave (S105).

Abstract: An aspect of the disclosure includes an uninterruptible power supply (UPS) system comprising a first input configured to receive input AC power, a second input configured to be coupled to an energy storage device having a backup runtime capacity, and a controller. The controller is configured to operate the UPS system to store a plurality of indications each indicating a number of times that the UPS system has regained access to the input AC power within a respective amount of time after the UPS system has stopped providing the output power, analyze the plurality of indications to determine an additional backup runtime capacity for reducing a number of load drops, determine a number of additional energy storage devices that provide the additional backup runtime capacity, and output the determined number of additional energy storage devices to add to attain the additional backup runtime capacity and reduce the load drops.

Abstract: Provided is a DC power supply device If an electrical tool (81) of a rated voltage of 36 V is connected to the DC power supply device (1) (if the voltage of a lower positive terminal indicates the presence of a short bar), a microcomputer (30) performs control so as to switch a switching element (Q1) on and output a DC voltage of 36 V between an upper positive terminal and the upper negative terminal. If an electrical tool (81) of a rated voltage of 18 V is connected to the DC power supply device (1) (if the voltage of the lower positive terminal indicates the absence of a short bar), the microcomputer (30) performs control so as to switch a switching element (Q2) on and output a DC voltage of 18 V between the upper positive terminal and the upper negative terminal.

Abstract: Various implementations described herein are directed to systems, apparatuses and methods for managing one or more loads connected to one or more power sources using one or more smart outlets. Apparatuses described herein may include smart outlets configured to communicate with one or more controllers and responsively connect and disconnect electrical loads connected thereto. Methods described herein may include signaling and/or controlling one or more loads from a group of loads to connect to or disconnect from one or more power sources.

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: A system for controlling power in a facility having an electrical system including a generator and an associated fuel tank. The fuel tank provides fuel to the generator and has a gauge indicating remaining fuel. The generator is electrically connected to the electrical system. A first power consuming device imposes a first load connected to the electrical system of the facility and second power consuming device imposes a second load connected to the electrical system of the facility. The system receives information related to the loads and calculates an initial estimated run time of the generator given the remaining quantity of fuel and information related to the first load and information related to the second load. The system selectively removes the second load in a simulation and calculates a second run time of the generator given the remaining quantity of fuel and information related to the first load.