Abstract: The subject matter described herein provides systems and techniques for the integration of TLVR technology in a vertical power VR module. A multiple-secondary TLVR topology using a controlled leakage inductance in the place of a separate compensation inductor, Lc, may be employed for the vertical power VR module. In addition, the capacitance inside the device to which the TLVR based vertical power VR module supplies power, rather than an output capacitance board, may be used in order to allow the module to be a single layer. Example structures that may include one or more primary windings and/or one or more secondary windings for each of possibly multiple linked phases of the TLVR based module are provided. The windings may be formed using traditional copper windings or printed circuit board (PCB) copper trace winding.

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: The present disclosure suppresses increase in device cost in a DC power distribution system that can disconnect a distribution line on which a short-circuit failure has occurred, from an output path. This DC power distribution system includes: a plurality of power conversion devices; one DC busbar; a plurality of distribution lines; a plurality of first current interruption portions respectively connected to input sides of the power conversion devices; a plurality of second current interruption portions connected between the power conversion devices and the DC busbar; and a plurality of third current interruption portions respectively provided on the distribution lines. Interruption current values of the third current interruption portions are set to smaller values than a maximum allowable current value of the power conversion device in which short-circuit current will reach the maximum allowable current value in a shortest time.

Abstract: This document describes techniques for detecting and providing user notification of mismatched devices. A device mismatch of a pair of wireless devices may be detected. A wireless indication of the device mismatch may be provided to another wireless device. That wireless device may provide a user notification that the pair of wireless devices are mismatched.

Abstract: In a communication apparatus, an analog circuit includes a circuit element to be connected to a first conductor, and processes a differential signal. A communication circuit receives, via a connection circuit, a differential signal processed by the analog circuit, and generates a signal for which the potential of a second conductor is used as a reference potential based on the received differential signal. An inductor is connected between the first conductor and the second conductor. The connection circuit includes a circuit element different from a capacitor. The analog circuit (21), the connection circuit, the communication circuit, the inductor, the first conductor, and the second conductor are housed in a conductive housing box.

Abstract: A rectifier modulates a signal in a rectifier by turning on a low side field effect transistor to produce a load at a coil network in response to a low side field effect transistor in an alternative diagonal being on. The system measures signal quality to determine a necessary modulation depth for ASK communication; then determines a switching time and magnitude of a ballast signal to apply to the low side field effect transistor to achieve that modulation depth.

Abstract: A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.

Abstract: A dual path and mode start-up circuit includes a high-voltage start-up circuit, an auxiliary start-up circuit, a capacitor, and a sensing circuit. The high-voltage start-up circuit has high-voltage input and output voltage nodes and is configurable to be operated in a first or second mode of operation. The auxiliary start-up circuit has auxiliary input and output voltage nodes. The auxiliary output voltage node, the high-voltage output voltage node, and the capacitor are in signal communication. The sensing circuit is configured to sense a voltage level at the capacitor and to configure the high-voltage start-up circuit to operate in the first mode of operation if the voltage level at the capacitor is less than a first threshold voltage level, and configure the high-voltage start-up circuit to operate in the second mode of operation if the voltage level at the capacitor is greater than a second threshold voltage level.

Abstract: Certain aspects of the present disclosure provide a method for providing a grid regulation service, including: determining a preferred operating point for use with one or more grid regulation resources of a first type; determining a predicted regulation up capacity and a predicted regulation down capacity of the one or more grid regulation resources of the first type for the grid regulation service period; commencing the grid regulation service period based on an indication; performing a grid regulation service during the grid regulation service period by varying a power delivery rate of the one or more grid regulation resources of the first type; and enabling one or more grid regulation resources of a second type to participate in the grid regulation service during the grid regulation service period.

Abstract: Voltage supply system with boost converter and charge pump. A voltage supply system can include a boost converter controllable to receive an input voltage at an input node and generate an output voltage when the output voltage is greater than or equal to the input voltage. The voltage supply system can include a charge pump controllable to receive the input voltage at the input node and generate the output voltage when the output voltage is less than the input voltage. The voltage supply system can further include a controller configured to receive a control signal and control the boost converter or the charge pump to generate the output voltage at an output node based on the control signal.

Abstract: A voltage controller of a display system includes a gate high voltage detector for detecting a gate high voltage, and a gate low voltage detector for detecting a gate low voltage. The gate high voltage and the gate low voltage are supplied to a gate driver, and the gate high voltage is greater than the gate low voltage.

Abstract: A computer implemented method for controlling a load aggregator for a grid includes receiving a predicted power demand over a horizon of time steps associated with one of at least two buildings, aggregating the predicted power demand at each time step to obtain an aggregate power demand, applying a learnable convolutional filter on the aggregate power demand to obtain a target load, computing a difference between the predicted power demand of the one building with the target load to obtain a power shift associated with the one building over the horizon of time steps, apportioning the power shift according to a learnable weighted vector to obtain an apportioned power shift, optimizing the learnable weighted vector and the learnable convolutional filter via an evolutionary strategy based update to obtain an optimized apportioned power shift, and transmitting the optimized apportioned power shift to a building level controller associated with the one building.

Abstract: A power supply apparatus may include a power management circuits, a switch circuit and a power controller. The power controller configured to sequentially drive the power management circuits in accordance with a drive sequence, and control the switch circuit to apply, to the output terminals, the output voltage of a normally operated power management circuit as the driven power management circuit among the power management circuits.

Abstract: A surrogate component for a test system is described that includes a body having a first shell, a second shell coupled to the first shell, and a wiring harness. The first shell includes a plurality of exit holes and the second shell includes a first connection interface and a second connection interface. The wiring harness passes through at least one of the plurality of exit holes of the first shell and includes at least one data communication line coupled to the first connection interface and at least one power line coupled to the second connection interface.

Abstract: Disclosed is a brightness adjustment method, a device and a display apparatus. The method comprises: acquiring a brightness adjustment instruction and a target display brightness value of a display panel, a display brightness value representing backlight brightness of the display panel; adjusting a duty cycle of the light-emitting control signal based on the target display brightness value of the display panel; driving LEDs of a corresponding row in a backlight source to emit light by the adjusted light-emitting control signal. Each time the duty cycle of the light-emitting control signal needs to be adjusted, a duty cycle of each pulse cycle of a part of N pulse cycles of the light-emitting control signal is selected for corresponding adjustment, thus backlight brightness adjustment accuracy of the display panel is effectively improved, and an adjustable range of backlight brightness of the display panel is wider.

Abstract: A load control system may control an electrical load in a space of a building based on one or more parameters regarding the physical condition of an occupant. The parameters may be gathered by one or more sensing devices. The sensing devices may be included in a mobile device. A system controller may receive the parameters and may automatically control the electrical loads in response to the parameters. The system controller may control the electrical load to attempt to adjust the physical condition of the occupant in response to the sensed parameters. The system controller may control the electrical load to provide an alert, an alarm, and/or a warning in response to the sensed parameters.

Abstract: The present disclosure relates to a power regulating unit and a transport refrigeration device using the same, and belongs to the technical field of power supplies. The power regulating unit of the present disclosure comprises: a rectifier module configured to perform a rectification operation on an AC input to obtain a first DC signal; a controller configured to control the rectification operation of the rectifier module based on corresponding parameter information for reflecting fluctuations of the AC input to prevent the first DC signal obtained from being affected by the fluctuations; a first output port configured to output the first DC signal; a first DC-DC conversion module configured to convert the first DC signal into a second DC signal; and a second output port configured to output the second DC signal. The power regulating unit of the present disclosure can provide multi-mode DC outputs and the DC outputs are stable.

Abstract: Object Provided is a power supply device and the like capable of improving convenience. Solving means A power supply device according to an embodiment of the present disclosure include a power supply unit that supplies power to an electromedical device, a first impedance control unit disposed on a path of a circulation path of the power between the power supply unit and the electromedical device, excluding an input path for inputting an electrical signal obtained in the electromedical device to another device, and a second impedance control unit disposed on the input path of a path between the power supply unit and the other device. An impedance state of each of the first and second impedance control units transitions in accordance with a supply state of the power to the electromedical device.

Abstract: A multi-channel power supply system including a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal, a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and a first reference signal, and a channel controller configured generate the first reference signal based on a color temperature according to a black body curve.

Abstract: A system and method for generating a low supply voltage and a high supply voltage from an input voltage, wherein the dependency of the high supply voltage magnitude on the magnitude of the input voltage is removed and the resulting high supply voltage magnitude is a multiple of the low supply voltage magnitude. The low supply voltage and the high voltage may be implemented in a power converter of a communication system comprising a plurality of subscriber line interface circuits (SLICs).

Abstract: Pulse sharing control to enhance performance in multiple output power converters is described herein. During a switching cycle, an energy pulse is provided to more than one port (i.e., output) using pulse sharing transfer. Pulse sharing transfer may enhance performance by reducing audible noise due to subharmonics and by reducing a root mean square current of one or more secondary currents. A primary switch is closed to energize an energy transfer element via a primary current. Energy may be shared among a first load port on a first circuit path via a first secondary current and among a second load port on a second circuit path via a second secondary current.

Abstract: A system includes an electrical connection system configured to transmit electric power to a plurality of devices associated with a structure and a control system associated with the structure. The control system is configured to receive data indicative of a respective priority associated with the plurality of devices and operate the electrical connection system to control flow of electric power to the plurality of devices based on the data.

Abstract: The present invention provides a power conversion method, apparatus, and device, and a medium. The power conversion apparatus comprises: a configurable input interface, a power conversion circuit, and a configurable output interface. The configurable input interface is provided to configure a first electrical connection mode between an input power supply and the power conversion circuit, and to electrically connect the input power supply to the power conversion circuit. The configurable output interface is provided to configure a second electrical connection mode between a load and the power conversion circuit, and to electrically connect the load to the power conversion circuit. The power conversion circuit is provided to perform corresponding power conversion according to a parameter of the input power supply and a parameter of the load.

Abstract: A method, apparatus and system are provided to coordinate, manage, and optimize the electrical loads across all subsystems behind a given meter. In this approach, which is sometimes referred to herein as intelligent demand optimization, the optimized capacity needs of each subsystem are assessed in real-time, along with the available capacity of the meter and the current billing period peak. Power is then distributed dynamically to each subsystem to reduce the overall peak.

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 power switch device driver with energy recovery is discussed. The power switch device adopts four switches and one inductor with appropriate control to insure the switching speed and save the power loss.

Abstract: A method for wirelessly providing power to a LED includes: receiving an AC input voltage having a first frequency via a cable; generating a first rectified voltage at a first node from the AC input voltage, the first node coupled to a first filtering non-electrolytic capacitor; powering a driver with the first rectified voltage; wirelessly transmitting power by driving a first resonant tank with the driver with a driving voltage at a second frequency higher than the first frequency, the driving voltage having a sinusoidal envelope at the first frequency and approximating a square-wave at the second frequency; receiving the wirelessly transmitted power with a second resonant tank; generating a second rectified voltage at second node from a voltage across the second resonant tank, the second node coupled to a second filtering capacitor; generating a DC voltage from the second rectified voltage; and powering the LED with the DC voltage.

Abstract: A method includes obtaining a state of charge (SOC) schedule for an energy storage device and a time-dependent forecast of electrical energy production by a renewable electrical energy generation resource; generating a time-varying charge/discharge control signal for the electrical energy storage device based on the time-dependent forecast of electrical energy production, wherein the time-varying charge/discharge control signal is configured to maintain an average SOC of the energy storage device as low as possible while satisfying the SOC schedule; and controlling charging and discharging of the energy storage device with the time-varying charge/discharge control signal.

Abstract: An information processing apparatus comprises an acquisition unit configured to acquire information according to the usage circumstances of the portable electric generator; an estimation unit configured to estimate a type of an electrical device that is connected, based on a measurement result with respect to a voltage and a current when the portable electric generator supplied electric power that is included in the information according to the usage circumstances; and a calculation unit configured to calculate a rental fee associated with an electric power amount supplied by the portable electric generator at the rental destination, using a billing coefficient corresponding to an electrical device estimated by the estimation unit, and the measurement result.

Abstract: A method for a dynamic inductive wireless power transmission includes providing an AC/DC power converter that receives three-phase power and provides regulated DC output current, connecting a trunk cable to the AC/DC power converter output and to multiple power transmitter modules. The trunk cable connects inputs of the power transmitter modules in series. The power transmitter modules transmit inductive wireless power over an air gap. The method includes providing a system controller that detects a vehicle containing a receiver coil and confirms if the vehicle should receive the inductive wireless power from the multiple power transmitter modules, and includes configuring the system controller to communicate with the AC/DC power converter to maintain the regulated DC output current at a constant value and transmit the inductive wireless power to the vehicle through the multiple power transmitter modules when the vehicle should receive the inductive wireless power.

Abstract: A power over Ethernet (PoE) power supplying method where power sourcing equipment (PSE) and a powered device exchange link layer discovery protocol data units (LLDPDUs). Each of the LLDPDUs includes two power values. Each of the power values indicates requested or allocated power for one of two sets of cable pairs of the Ethernet twisted pair connecting the PSE and the powered device. Accordingly, the supplied powers to the powered device at sets of cable pairs are independent from each other.

Abstract: The invention provides an automotive lighting device for an automotive vehicle. This device comprises a voltage regulator, a temperature sensor and a controlled light group. The controlled light group comprises a plurality of light sources and a light driver, the light driver comprising terminals and being configured to selectively activate or deactivate current flow in each terminal, in such a way that each light source is connected to one of the terminals. The controlled light group is fed by a voltage output value of the voltage regulator, the temperature sensor is arranged to sense a temperature in a zone of the lighting device and send information to the voltage regulator and the voltage regulator comprises a control driver to modify the voltage output value when receiving information from the temperature sensor.

Abstract: A voltage converter circuit includes a capacitor having a first end selectively connected to an input power source through a first input switch and a second end selectively connected to the input power source through a second input switch, and a single inductor configured to generate an output voltage in response to a voltage of a node between the single inductor and the first input switch, selectively connect the input power source through the first input switch at the node, and connect the first end of the capacitor at the node.

Abstract: An apparatus is disclosed for harvesting ringing energy. In an example aspect, the apparatus includes a bootstrap circuit. The bootstrap circuit includes a bootstrap capacitor and a bootstrap switch. The bootstrap switch includes a first terminal configured to accept an input voltage. The bootstrap switch also includes a second terminal coupled to the bootstrap capacitor. The bootstrap switch additionally includes a body diode comprising an anode coupled to the first terminal and a cathode coupled to the second terminal. The bootstrap switch is configured to be in an open state to charge the bootstrap capacitor via the body diode. The bootstrap switch is also configured to provide a voltage at the second terminal of the bootstrap switch. The voltage is greater than an average of the input voltage.

Abstract: An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module.

Abstract: Apparatus for power conversion are provided. One apparatus includes a power converter including an input circuit and an output circuit. The power converter is configured to receive power from a source for providing power at a DC source voltage VS. The power converter is adapted to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio KDC=VOUT/VIN at an output current, wherein VIN is an input voltage and VOUT is an output voltage. The input circuit and at least a portion of the output circuit are connected in series across the source, such that an absolute value of the input voltage VIN applied to the input circuit is approximately equal to the absolute value of the DC source voltage VS minus a number N times the absolute value of the output voltage VOUT, where N is at least 1.

Abstract: An electrical generator is provided. The electrical generator can include a generator, an electric motor, and a battery. The generator has a rotatable shaft and stationary component and be operatively coupled via a drive belt to the motor, which provides torque to the rotatable shaft of the generator The battery is operatively coupled to the motor. The generator can be operatively coupled to a utility grid via a transformer/invertor that can import current from the utility grid to charge the battery when the utility grid is operating and export current from the generator to a grid connector when the utility grid is not operating.

Abstract: A voltage generation circuit includes a plurality of rectification circuits configured to be selectively activated depending on a plurality of first control signals, and to generate an internal voltage according to respective reference voltages capable of being independently trimmed depending on a plurality of second control signals; a detection circuit configured to generate a detection signal by comparing a pre-detection signal, generated in each of the plurality of rectification circuits, and a reference signal; and a storage circuit configured to store a pre-select signal provided from an external system, and to output a stored signal to each of the plurality of rectification circuits as the plurality of second control signals.

Abstract: A direct current (DC)-DC conversion system including at least one DC source, at least one source cable, a DC-DC converter, at least one output cable, and at least one DC load. Each of the at least one source cable includes a source input connector, a source output connector, and a source input cable. The DC-DC converter includes a housing, a DC-DC input connector, and a DC-DC output connector. Each of the at least one output cable includes a load input connector, at least one load output connector, and a load output cable. The DC-DC converter is operable to receive energy from the at least one source via the at least one source cable, and is operable to provide energy to the at least one DC load via the at least one output cable.

Abstract: A method of controlling a drive including one respective inverter associated with each of a plurality of servomotors in a robot. The method includes providing a PWM frequency corresponding to a frequency of switching instances for respective semiconductor switches in each of the inverters, whereby for each inverter time is divided into consecutive control cycles forming a sequence of control cycles of the inverter, each control cycle containing two, and only two, of the switching instances for each of the semiconductor switches. The method also includes spreading the respective control cycle sequences of the inverters over time such that the control cycles of each inverter are time shifted in respect to the control cycles of each of the other inverters in the power converter.

Abstract: An isolated switching power converter is presented. The isolated switching converter includes a transformer, a secondary-side switch and a secondary-side controller. The transformer has a primary winding coupled to an input, a first secondary winding coupled to a first output for providing a first output voltage, and a second secondary winding coupled to a second output for providing a second output voltage. The secondary-side switch is coupled to the second secondary winding. The secondary-side controller compares the second output voltage with a first reference voltage and generates a control signal based on the comparison to operate the secondary-side switch.

Abstract: Frameworks and methods for generating early-warning indicators of impending nonlinear instabilities of a dynamical system are provided. In accordance with one aspect, the framework includes a data collector and a system identification (SI) modeler. The data collector is coupled to the dynamical system and collects pre-bifurcation data. The SI modeler predicts early-warning indicators of impending nonlinear instabilities using only the pre-bifurcation data and the SI modeler includes a means for extrapolating Fokker-Planck coefficients in response to the pre-bifurcation data to generate precursors to a Hopf bifurcation and/or to identify a type of the Hopf bifurcation and/or to forecast the limit-cycle oscillation (LCO) amplitudes of a post-bifurcation regime. In addition, the SI modeler predicts the locations of the Hopf bifurcation points, the type of the Hopf bifurcation and the LCO amplitudes of the post-bifurcation regime.

Abstract: An electronic device capable of transmitting and receiving wireless power is provided. The electronic device includes a wireless power transfer (WPT) coil, a sensor coil surrounding the WPT coil, and a processor operatively coupled to the WPT coil and the sensor coil. The processor may be configured to control to transmit and receive power by using the WPT coil, perform a ping operation by using the sensor coil, control to measure a waveform of a current or voltage of the sensor coil while or after performing the ping operation using the sensor coil, control to check a Q factor of the sensor coil based on the measured waveform, identify the presence of a foreign object based on the checked Q factor, and control the power transmission using the WPT coil based on a result of the determination of the presence of the foreign object.

Abstract: An expander circuit may be configured to control a plurality of driver circuits for driving light emitting diodes (LEDs). The expander circuit may comprise a bus interface circuit configured to receive control signals from a processor over a communication bus, and a plurality of modulation signal generators configured to generate modulation signals based on the control signals. The expander circuit may be configured to provide the modulation signals to the plurality of driver circuits for driving the LEDs.

Abstract: A method for controlling a renewable energy power system having at least one renewable energy asset connected to a power grid during a frequency event includes receiving, via a controller, a frequency signal of the power grid. The method also includes determining a time constant for a frequency filter assembly as a function of two or more parameters of the frequency signal. Further, the method includes filtering the frequency signal via the frequency filter assembly using the determined time constant. Moreover, the method includes determining a power command for the at least one renewable energy asset using the filtered frequency signal. In addition, the method includes controlling the at least one renewable energy asset based on the power command.

Abstract: A solid state driver to adapt current ripple characteristics therein, at least partially based on operating characteristics of a solid state lighting device operated by the driver, is provided. The driver senses operating voltage, operating current, or a combination of operating voltage and operating current of a solid state lighting device. The driver stores pre-determined current ripple percentage settings in a data structure, for example, in a controller circuit. The driver selects and implements one of the pre-determined current ripple percentage settings based on one or more of the sensed operating characteristics of the solid state lighting device, to improve efficiency, to reduce the operating frequency, and/or to lower the operating temperature of one or more components of the driver.

Abstract: A nanogrid and a virtual inverter controller for the nanogrid are disclosed. The nanogrid includes at least one parallel branch, and at least one branch is equipped with a protector. At least one of the protectors is equipped with one virtual inverter controller. The virtual inverter controller includes a sensor component configured to detect at least one characteristic parameter on the branch, and a control component affecting the electrical connection state of the corresponding protector of the virtual inverter controller according to the characteristic parameter.

Abstract: The present disclosure provides a method for controlling a surgical instrument. The method includes connecting a power assembly to a control circuit, wherein the power assembly is configured to provide a source voltage, energizing, by the power assembly, a voltage boost convertor circuit configured to provide a set voltage greater than the source voltage, and energizing, by the voltage boost convertor, one or more voltage convertors configured to provide one or more operating voltages to one or more circuit components.

Abstract: A switch mode power supply includes a PWM controller, a voltage converter, an output detector and a communicator. The PWM controller is to receive an actuation signal, and generates a PWM signal based on the actuation signal. The voltage converter is to receive the PWM signal and an external voltage, and converts, based on the PWM signal, the external voltage into first and second output voltages. The output detector is to receive the first and second output voltages, and generates an enable signal based on a target voltage value and a magnitude difference between the first and second output voltages. The communicator is to receive the enable signal, and generates the actuation signal corresponding to the enable signal.

Abstract: A voltage generation circuit includes a plurality of rectification circuits configured to be selectively activated depending on a plurality of first control signals, and to generate an internal voltage according to respective reference voltages capable of being independently trimmed depending on a plurality of second control signals; a detection circuit configured to generate a detection signal by comparing a pre-detection signal, generated in each of the plurality of rectification circuits, and a reference signal; and a storage circuit configured to store a pre-select signal provided from an external system, and to output a stored signal to each of the plurality of rectification circuits as the plurality of second control signals.