By Voltage Regulation Patents (Class 700/298)
  • Patent number: 11953518
    Abstract: The present disclosure provides a switching matrix system and an operating method thereof for semiconductor characteristic measurement. The switching matrix system is configured to: detect an assembly of at least one switching matrix module inserted into a plurality of slots of the switching matrix system; determine a user interface according to the assembly of the at least one switching matrix module inserted into the slots, wherein the user interface includes an operable object corresponding to the assembly; and provide the user interface.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: April 9, 2024
    Assignee: STAR TECHNOLOGIES, INC.
    Inventors: Choon Leong Lou, Hsiao Hui Hsieh, Li Min Wang
  • Patent number: 11870261
    Abstract: A method and system for controlling voltage and reactive power for electrical grids includes monitoring the output of the energy generation facilities at the point of interconnection (POI) of each energy generation facility to the power transmission system of the electrical grid. In addition, the voltage at a point of utilization (POU) is monitored to determine when the output voltage of the energy generation facilities must be adjusted to maintain voltage at the POU. In addition, when it is determined that energy generation facilities are exchanging reactive power, the voltage set points of the energy generation facilities are adjusted to reduce the exchanged power.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: January 9, 2024
    Assignee: Power Engineers, Incorporated
    Inventors: Christopher W. Canine, Aaron M. Cowan
  • Patent number: 11870260
    Abstract: A method and system for controlling voltage and reactive power for electrical grids includes monitoring the output of the energy generation facilities at the point of interconnection (POI) of each energy generation facility to the power transmission system of the electrical grid. In addition, the voltage at a point of utilization (POU) is monitored to determine when the output voltage of the energy generation facilities must be adjusted to maintain voltage at the POU. In addition, when it is determined that energy generation facilities are exchanging reactive power, the voltage set points of the energy generation facilities are adjusted to reduce the exchanged power.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: January 9, 2024
    Assignee: Power Engineers, Incorporated
    Inventors: Christopher W. Canine, Aaron M. Cowan
  • Patent number: 11749996
    Abstract: An aggregation control system for adjusting electric power between a plurality of facilities via a mobile storage battery apparatus, wherein each of the plurality of facilities includes a control apparatus that controls charging and discharging of the mobile storage battery apparatus, and the aggregation control system includes a server apparatus coupled to each control apparatus; and wherein the server apparatus: creates a charge-discharge condition for the mobile storage battery apparatus on the basis of management information for electric power demand and supply at a specified facility among the plurality of facilities; compares a charge-discharge request to a control apparatus of the specified facility with the charge-discharge conditions; and issues a command to the control apparatus to charge or discharge the mobile storage battery apparatus according to a result of the comparison.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 5, 2023
    Assignee: HITACHI, LTD.
    Inventors: Makoto Miyata, Takahiro Tsukishima, Mitsumasa Takayama, Kouichi Hiraoka, Hideki Kobayashi
  • Patent number: 11747840
    Abstract: A control system for a multi-phase power system includes a first phase line, a second phase line, and a third phase line. The control system includes a plurality of regulator controls including a first regulator control configured to control a first tap changer associated with the first phase line, a second regulator control configured to control a second tap changer associated with the second phase line, a third regulator control configured to control a third tap changer associated with the third phase line, and an electronic processor coupled to the first regulator control, the second regulator control, and the third regulator control. The electronic processor is configured to regulate the voltage of the multi-phase system using the first, second, and third regulator controls.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: September 5, 2023
    Assignee: Hubbell Incorporated
    Inventors: Hung Van Tu, Thaichong Li, James Robert Wulff, Lawrence Deward Bach, Ravi Manda, Murty Yalla
  • Patent number: 11738654
    Abstract: The vehicle dispatching system accepts a dispatch request from a user, selects an autonomous vehicle matching with the dispatch request from among a plurality of autonomous vehicles, and dispatches a selected autonomous vehicle to the user. The plurality of autonomous vehicles include a plurality of battery-mounted vehicles having an in-vehicle battery capable of being charged externally as an energy source. Each of the plurality of battery-mounted vehicles performs charging at a charging station when a charging level of the in-vehicle battery decreases. The vehicle dispatching system comprises a management server including a processor for executing programs stored in memory, the management server programmed to act as a charging planning unit that changes an upper limit charging level of the in-vehicle battery when charging at the charging station according to a time slot.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: August 29, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Taguchi, Makoto Morita
  • Patent number: 11715980
    Abstract: A wireless power transmitting system includes a power amplifier comprising a plurality of measurement points and a power amplifier controller integrated circuit (IC). In some embodiments, the power amplifier controller IC performs synchronization of the various components of the power amplifier, conducts impedance and temperature measurements at the measurements points, determines if a foreign object is within the transmission range of the wireless power transmitter, and decides if a shutdown of the power amplifier is needed. In some embodiments, the power amplifier controller IC determines through a transmitter controller IC, the presence of a foreign object within the transmission range and adjusts the power transmission to one or more receivers.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: August 1, 2023
    Assignee: Energous Corporation
    Inventors: Cesar Johnston, Sean Nicolson, Aras Pirbadian, Deepak Jain, Howard Chan, Erik Heinke, Mehdi Khanpour
  • Patent number: 11689051
    Abstract: A system of modules which control and measure energy usage at a building which are in communication with a software program executing on a remote server controlled by a third party. The third party said usage via the software program which communicates with the modules to modify energy usage and demand for energy and is responsible or liable for energy usage charges the building where the third party does not actually use the energy.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 27, 2023
    Assignee: Budderfly, Inc.
    Inventor: Albert Subbloie
  • Patent number: 11646581
    Abstract: Multi-port power adapters. At least one example is a method including: supplying a first bus voltage to a first device by way of a DC-DC converter coupled to a link voltage; supplying a second bus voltage to a second device by way of a second DC-DC converter coupled to the link voltage; converting an AC voltage to the link voltage by way of an AC-DC converter; selecting, by a shunt regulator, a setpoint for the link voltage based on the first bus voltage and the second bus voltage; and regulating the link voltage to the setpoint by the AC-DC converter.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 9, 2023
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Gwanbon Koo, Youngbae Park, BongGeun Chung
  • Patent number: 11630136
    Abstract: A measuring device for measuring current effective power in a circuit of a transmission system, including an evaluation device and a calibration device, the evaluation device having a connection for measuring current, voltage, and phase shift between the current and the voltage in the circuit, wherein the evaluation device and the calibration device are connected to one another, the evaluation device configured to measure power by evaluating measured current and measured voltage, the calibration device configured to correct the measured current and/or the measured voltage via a cos ( ) value of a measured phase shift between the measured current and the measured voltage and/or via a holding time, the evaluation device configured to calculate a power value with a corrected value of the measured current and/or a corrected value of the measured voltage, and the calibration device configured to make available the calculated power as the current effective power.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: April 18, 2023
    Assignee: BRUSA Elektronik AG
    Inventors: Lukas Böhler, Marc Bosch
  • Patent number: 11603006
    Abstract: The vehicle dispatching system accepts a dispatch request from a user, selects an autonomous vehicle matching with the dispatch request from among a plurality of autonomous vehicles, and dispatches a selected autonomous vehicle to the user. The plurality of autonomous vehicles include a plurality of battery-mounted vehicles having an in-vehicle battery capable of being charged externally as an energy source. Each of the plurality of battery-mounted vehicles performs charging at a charging station when a charging level of the in-vehicle battery decreases. The vehicle dispatching system comprises a management server including a processor for executing programs stored in memory, the management server programmed to act as a charging planning unit that changes an upper limit charging level of the in-vehicle battery when charging at the charging station according to a time slot.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: March 14, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Taguchi, Makoto Morita
  • Patent number: 11489338
    Abstract: A solar cell power conversion device is disposed between a solar cell and a consumer premises distribution system. A storage battery power conversion device is disposed between a storage battery and the consumer premises distribution system. When an AC effective voltage in the consumer premises distribution system deviates from a voltage range defined in accordance with dead zone information transmitted from HEMS, system voltage stabilization control for returning the AC effective voltage to fall within the voltage range is performed by control of active power and reactive power that are output from a first DC/AC conversion circuit and a second DC/AC conversion circuit.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: November 1, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sadayuki Inoue, Tomihiro Takano
  • Patent number: 11480626
    Abstract: Testbeds for battery management systems (BMSs) and/or batteries, as well as methods of using the same, are provided. A testbed can be a control-hardware-in-the-loop (CHIL) testbed and can include a simulation bench including a battery cell simulator, a temperature simulator, and/or a real-time simulator. The simulator bench can further include a programmable power supply, a relay, a resistor, and/or a communication protocol.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: October 25, 2022
    Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
    Inventors: Arif I. Sarwat, Asadullah Khalid, Alexander Stevenson
  • Patent number: 11475367
    Abstract: Methods and apparatus for training a matrix-based differentiable program using a photonics-based processor. The matrix-based differentiable program includes at least one matrix-valued variable associated with a matrix of values in a Euclidean vector space. The method comprises configuring components of the photonics-based processor to represent the matrix of values as an angular representation, processing, using the components of the photonics-based processor, training data to compute an error vector, determining in parallel, at least some gradients of parameters of the angular representation, wherein the determining is based on the error vector and a current input training vector, and updating the matrix of values by updating the angular representation based on the determined gradients.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: October 18, 2022
    Assignee: Lightmatter, Inc.
    Inventors: Tomo Lazovich, Darius Bunandar, Nicholas C. Harris, Martin B. Z. Forsythe
  • Patent number: 11424609
    Abstract: The present disclosure relates to systems and methods of sag in a power line. In an embodiment, a monitoring device may include a distance sensor and an operating parameter sensor. A processor of the monitoring device may acquire, via the distance sensor, a first distance measurement. The processor may acquire, via the operating parameter sensor, a first operating parameter measurement. The processor may provide an output signal indicating that the power line is sagging when a combination of the first distance measurement and the first operating parameter measurement exceed a first combined distance-operating parameter threshold.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: August 23, 2022
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Scott M. Manson, Shankar V. Achanta, Gregary C. Zweigle, Richard M. Edge
  • Patent number: 11404882
    Abstract: A method increases the power of an AC grid by means of the conductors which connect the grid coils of the grid transformer. The conductor-ground voltages and the AC phase voltage are kept lower than a voltage value. The sinusoidal phase voltages of the expanded grid are increased by up to 25% compared to the AC phase voltages, while the phase currents always remain sinusoidal. To this end, the ? generators couple harmonic voltages between the conductors and ground and reduce the amplitude of the resulting hypersinusoidal conductor-ground voltages such that they always remain below the Uix value. In addition, the ? generators control the transferred grid power.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: August 2, 2022
    Assignee: ReEnergy Holding AG
    Inventor: Alexander Stoev
  • Patent number: 11353908
    Abstract: A centralized voltage control apparatus is connected via a communication network to a plurality of local voltage control devices each controlling a corresponding voltage controller connected to a distribution line of a distribution system. The centralized voltage control apparatus includes: a voltage distribution determination unit that calculates a control variable for each of the voltage controllers on the basis of a measured value of voltage at each measurement point of the distribution line and a proper voltage range at each measurement point; and a tap position determination unit that gives a command value to each of the local voltage control devices on the basis of the control variable. At least a part of the proper voltage range at each measurement point is determined on the basis of an estimated value of a change in voltage in a section in which voltage is not measured on the distribution line.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: June 7, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Nobuhiko Itaya
  • Patent number: 11283268
    Abstract: A charger according to one aspect of the present disclosure includes a current outputter, a first charge controller, and a second charge controller. The first charge controller receives a first required information from a first device in accordance with a first communication protocol. The first communication protocol requires at least a first minimum volume of communication to acquire the first required information from the first device. The second charge controller receives a second required information from a second device in accordance with a second communication protocol. The second communication protocol requires at least a second minimum volume of communication to acquire a second required information from the second device. The second minimum volume is smaller than the first minimum volume.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: March 22, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Hisakazu Okabayashi, Masaya Mizutani, Makoto Ito
  • Patent number: 11218033
    Abstract: The present disclosure relates to a wireless power transmitter device, a wireless power receiver device, and a system for transferring power wirelessly. A wireless power transmitter device according to an embodiment of the present disclosure can include: a driving coil configured to transmit power wirelessly; a magnetic coupler mutually inductively coupled with the driving coil; and a resonance frequency adjuster part configured to adjust the resonance frequency of the magnetic coupler, where the magnetic coupler can include a plurality of coils arranged in a region opposite one side of the driving coil.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: January 4, 2022
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Yongshik Lee, Tae Jun Lim
  • Patent number: 11196370
    Abstract: A method for supplying power at a network connection point into an electric supply network having a network frequency by means of a converter-controlled generator unit, in particular a wind turbine, comprising the following steps: supplying electric power depending on a control function, wherein the electric power can comprise active and reactive power, and a selection can be made between a normal control function and at least one frequency-maintaining control function differing from the normal control function as a control function, and the normal control function is selected if it has been recognized that the electric supply network is operating in a normal state, and the frequency-maintaining control function is selected if a steady-frequency operating state is present or is being prepared, wherein a steady-frequency operating state describes an operating state particularly of the electric supply network in which the network frequency is to be maintained at a constant value.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: December 7, 2021
    Assignee: Wobben Properties GmbH
    Inventor: Johannes Brombach
  • Patent number: 11183874
    Abstract: Technologies are provided for the monitoring of a power grid using power measurements using cable network devices. An embodiment of the technologies includes a computing system that can cause the cable network devices to perform power measurements. The cable network devices include customer premises equipment. The computing system also can receive first data defining observed values corresponding to the power measurements. A first observed value of the observed values results from a first power measurement of the power measurements. The computing system also can obtain second data defining times corresponding to the power measurements, where the first power measurement occurs at a first time of the defined times. The computing system can then generate status data by analyzing the observed values, where the status data represent respective power utilization states of the cable network devices. The computing system can provide the status data to a remotely located computing device.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: November 23, 2021
    Assignee: Cox Communications, Inc.
    Inventor: Jeffrey L. Finkelstein
  • Patent number: 11177657
    Abstract: A power system simulator may calculate mechanical power of at least one generator at a second time in a simulated power system based at least in part on electrical power of the at least one generator at a first time. The power system simulator may calculate system frequency at second time based on system dynamic model that models the electrical power and the mechanical power of the simulated power system, frequency and voltage characteristics in the simulated power system, and inertia of the at least one generator. The power system simulator may provide simulated power system measurements based on the active power values to a power system controller to allow testing of the power system controller.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: November 16, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Patent number: 11163326
    Abstract: A test method of a voltage regulator having a plurality of parameters that need to be set, the test method includes: receiving a user requirement on a computer; generating a plurality of setting combinations of the plurality of parameters, the plurality of parameters has different combination of values in different setting combinations; downloading the plurality of setting combinations to the voltage regulator via a first I/O bus and configuring the voltage regulator with each setting combination; configuring communication between a controller provided by the computer and measurement devices; executing the communication between the controller and the measurement devices via a second I/O bus; and displaying test result of each configured voltage regulator on the computer.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: November 2, 2021
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Lei Miao, Long Li, Siran Wang
  • Patent number: 11165256
    Abstract: A power supply system includes a plurality of solar power generation device groups, a power monitoring device group, and a power transforming device. The power monitoring device group includes a plurality of power monitoring devices, and each of the power monitoring devices includes a processing module, a serial control module, and a power detecting module. At least one power parameter detected by the power detecting module of each of the power monitoring devices is provided to the processing module. The processing module transmits the at least one power parameter to a control system through the serial control module.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: November 2, 2021
    Inventor: Ming-Tsung Chen
  • Patent number: 11157031
    Abstract: A dynamic auto-adaptive volt/VAR control includes a memory storing program code, a communications channel operatively connected to a volt/VAR device, and a processor. The processor is configured to access a database of prior system knowledge and receive real-time measurements and power system operating condition information. The processor processes the prior system knowledge and the real time measurements and operating condition information to create a set of commands for voltage and reactive power control that will result in at least one of: (a) maintaining a voltage profile at the volt/VAR device within predefined limits, or (b) reducing electrical losses through voltage optimization. The processor causes the set of commands to be sent to the volt/VAR device.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: October 26, 2021
    Assignee: Opus One Solutions Energy Corp.
    Inventors: Joshua Wong, Aboelsood Zidan, Mostafa Farouk Shaaban
  • Patent number: 11150720
    Abstract: Aspects of the present disclosure are presented for a power management system of a multilane AI system architecture. The system may include an orchestrator configured to control power and other operations of a lane. An uber orchestrator manages the overall system, and may know all of the multilane systems within the AI virtual multilane system that need to be active at a given frequency and power envelope for given price, and performance constraints. The orchestrator of each lane knows the compute/logic blocks that need to be active for a given AI app model AI processing chain execution. The orchestrator may be configured to send commands to turn off power to certain components that are not utilized in performing an AI execution sequence, deactivate operation to the lane when its functions are completed, and also modulate the clock frequency of a lane to fit the computation demands while minimizing power usage.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 19, 2021
    Inventor: Sateesh Kumar Addepalli
  • Patent number: 11142090
    Abstract: The invention relates to a device (1) for operating a motor vehicle, comprising an electrical drive system with an electrical high-voltage traction network (2) and an operating network (3) that has a high-voltage unit (7) comprising a power electronics system (5), and a low-voltage unit (6) comprising a control electronics system (4), and a first transformer (8) designed to convert an input voltage (U1) from the low-voltage unit (6) into a first, particularly higher output voltage (U2) for the power electronics system (5). According to the invention, the dev ice comprises at least one second transformer (11) designed to convert the first output voltage (U2) of the first transformer (8) into a second output voltage (U3) for the control electronics system (4), the second output voltage (U3) being higher than the input voltage (U1).
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: October 12, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Christian Bernhardt, Thomas Meyer
  • Patent number: 11043836
    Abstract: An uninterruptible power supply includes a first power converter, a second power converter, and a DC-to-AC converter coupled to the first power converter and the second power converter. The first power converter includes a first AC-to-DC converter and a transformer having a primary winding coupled to the input and the output, and a secondary winding coupled to the first AC-to-DC converter. The first power converter is configured, during a first mode of operation of the UPS, to provide a first portion of the AC input power as the AC output power via the primary winding and convert a second portion of the AC input power into DC power via the first AC-to-DC converter. The second power converter includes a second AC-to-DC converter and is configured to convert the AC input power into DC power via the second AC-to-DC converter during a second mode of operation of the UPS.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 22, 2021
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Carsten Nommensen Tingskov, Jacob Damgaard Schmidt
  • Patent number: 11006506
    Abstract: The invention relates to a bus node, which can be connected to a building services bus, which bus node comprises a supply unit and a control unit, wherein the supply unit is designed to output a measurement current onto the building services bus, and wherein the control unit is designed to sense and evaluate a bus current on the building services bus and, on the basis of the evaluation, to determine whether an operating current is output onto the building services bus by the supply unit.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 11, 2021
    Assignee: TRIDONIC GMBH & CO KG
    Inventors: Eduardo Pereira, Ueli Keller, Urs Zingg
  • Patent number: 10790667
    Abstract: There is provided a voltage/reactive power control device, method, and a voltage/reactive power control system that allow a proper control even with a control delay or in a situation where the system conditions at the time of setting the voltage reference value may not be always reproduced. A voltage/reactive power control system is applied to a power system in which a monitoring point is set in a local system divided as appropriate from the power system and the local system includes a voltage/reactive power control device capable of adjusting voltage and reactive power at the monitoring point.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: September 29, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Miyake, Eisuke Kuroda, Masahiro Yatsu
  • Patent number: 10775815
    Abstract: A method, apparatus, system and computer program is provided for controlling an electric power system, including implementation of an energy planning process (EPP) system which can be used to plan a voltage control and conservation (VCC) system applied to an electrical distribution connection system (EEDCS). The EPP system plans modifications to the EEDCS as a result of operating the VCC system in the “ON” state, in order to maximize the level of energy conservation achieved by the VCC system control of the EEDCS. The EPP system may also identify potential problems in the EEDCS for correction.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: September 15, 2020
    Assignee: Dominion Energy, Inc.
    Inventors: Melissa A. Peskin, Phillip W. Powell
  • Patent number: 10776172
    Abstract: One or more computing devices, systems, and/or methods for cost optimized services for dynamic service levels are provided. Components of a service are hosted across a first set of infrastructure tiers that satisfy a service level of the service at a first point in time. Costs associated with levels of computing resources provided infrastructure tiers are monitored. The service is monitored to dynamically detect a current service level of the service at a second point in time. One or more of the components are migrated to a second set of infrastructure tiers based upon the current service level of the service and costs associated with the second set of infrastructure tiers.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: September 15, 2020
    Assignee: Oath Inc.
    Inventor: Sreenivas Rachamadugu
  • Patent number: 10742068
    Abstract: Systems, methods, and products are described herein for identifying deviations within a power system. Using time-synchronized measurement devices, a set of voltages and currents associated with a plurality of electrical components within the power system are continuously measured. For each electrical component of the plurality of electrical components, a representative set of parameters are recursively determined based on the measured set of voltages and currents. For each electrical component, an electrical characteristic value is determined based on the representative set of parameters. For each electrical component, a deviation of the electrical component is identified based on comparison of the determined electrical characteristic value with a reference value of the electrical characteristic of the electrical component or based on identifying the deviation by means of a filtered rate of change. An alert of the deviation is provided for further characterization of an abnormality in the power system.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: August 11, 2020
    Assignee: PXiSE Energy Solutions, LLC
    Inventors: Raymond A. de Callafon, Charles H. Wells, Patrick T. Lee
  • Patent number: 10740693
    Abstract: Methods and apparatus for training a matrix-based differentiable program using a photonics-based processor. The matrix-based differentiable program includes at least one matrix-valued variable associated with a matrix of values in a Euclidean vector space. The method comprises configuring components of the photonics-based processor to represent the matrix of values as an angular representation, processing, using the components of the photonics-based processor, training data to compute an error vector, determining in parallel, at least some gradients of parameters of the angular representation, wherein the determining is based on the error vector and a current input training vector, and updating the matrix of values by updating the angular representation based on the determined gradients.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: August 11, 2020
    Assignee: Lightmatter, Inc.
    Inventors: Tomo Lazovich, Darius Bunandar, Nicholas C. Harris, Martin Forsythe
  • Patent number: 10707697
    Abstract: Systems, methods, and products are described herein for identifying deviations within a power system. Using time-synchronized measurement devices, a set of voltages and currents associated with a plurality of electrical components within the power system are continuously measured. For each electrical component of the plurality of electrical components, a representative set of parameters are recursively determined based on the measured set of voltages and currents. For each electrical component, an electrical characteristic value is determined based on the representative set of parameters. For each electrical component, a deviation of the electrical component is identified based on comparison of the determined electrical characteristic value with a reference value of the electrical characteristic of the electrical component or based on identifying the deviation by means of a filtered rate of change. An alert of the deviation is provided for further characterization of an abnormality in the power system.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: July 7, 2020
    Assignee: PXiSE Energy Solutions, LLC
    Inventors: Raymond A. de Callafon, Charles H. Wells, Patrick T. Lee
  • Patent number: 10637253
    Abstract: A cooperative control method and device for a photovoltaic optimizer and a photovoltaic inverter are provided. The cooperative control method and device are applicable to a grid-connected photovoltaic system including N photovoltaic components, N photovoltaic optimizers and one photovoltaic inverter. The N photovoltaic components are respectively connected to input sides of the N photovoltaic optimizers, and output sides of the N photovoltaic optimizers are connected to a DC side of the photovoltaic inverter, N being an integer greater than or equal to 1. The cooperative control method includes determining an operation parameter of the grid-connected photovoltaic system; judging whether the operation parameter is lower than a preset value; and adjusting a voltage of the DC side of the photovoltaic inverter until the operation parameter is not lower than the preset value, in a case that the operation parameter is lower than the preset value.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: April 28, 2020
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Jun Xu, Jiacai Zhuang, Yilei Gu
  • Patent number: 10637246
    Abstract: The present disclosure is directed to energy storage and supply management system. The system may include one or more of a control unit, which is in communication with the power grid, and an energy storage unit that stores power for use at a later time. The system may be used with traditional utility provided power as well as locally generated solar, wind, and any other types of power generation technology. In some embodiments, the energy storage unit and the control unit are housed in the same chassis. In other embodiments, the energy storage unit and the control unit are separate. In another embodiment, the energy storage unit is integrated into the chassis of an appliance itself.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: April 28, 2020
    Assignee: Orison
    Inventor: Eric Douglass Clifton
  • Patent number: 10461538
    Abstract: A system stabilization control device controls a control instrument within a power system on the basis of measurement information from a plurality of measurement points within the power system. The system stabilization control device includes an equipment information database storing information of system equipment interconnected with the power system; a control priority determining unit determining the control priority of the control instrument on the basis of the information of the system equipment; a control target determining unit determining a control target on the basis of the measurement information from the plurality of measurement points and the control priority; a destabilization time calculating unit calculating destabilization time of the power system from the measurement information from the plurality of measurement points; and a control time determining unit determining control time of the control instrument on the basis of the destabilization time and the information of the system equipment.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 29, 2019
    Assignee: HITACHI, LTD.
    Inventors: Jun Yamazaki, Osamu Tomobe, Eisuke Kuroda, Akira Tsubota, Sumito Tobe, Masahiro Yatsu
  • Patent number: 10389129
    Abstract: A method of controlling a grid-connected voltage source converter, VSC, using power-synchronization control, wherein the method includes: determining a VSC current vector (i) based on a VSC phase angle (?) which is determined based on an integration of a power control error, determining an active power producing current component (idref) of a reference current vector (iref) based on an active power reference (Pref) for the VSC, determining the reference current vector (iref) based on the active power producing current component (idref), determining a damping component based on a virtual damping resistance (Ra), the reference current vector (iref) and the VSC current vector (i), determining a voltage vector (v) based on a VSC voltage magnitude (V) and the damping component, and controlling the VSC based on the voltage vector (v).
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: August 20, 2019
    Assignee: ABB Schweiz AG
    Inventors: Lennart Harnefors, Lidong Zhang
  • Patent number: 10386872
    Abstract: A method, apparatus, system and computer program is provided for controlling an electric power system, including implementation of an energy planning process (EPP) system which can be used to plan a voltage control and conservation (VCC) system applied to an electrical distribution connection system (EEDCS). The EPP system plans modifications to the EEDCS as a result of operating the VCC system in the “ON” state, in order to maximize the level of energy conservation achieved by the VCC system control of the EEDCS. The EPP system may also identify potential problems in the EEDCS for correction.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: August 20, 2019
    Assignee: Dominion Energy, Inc.
    Inventors: Melissa A. Peskin, Phillip W. Powell
  • Patent number: 10371592
    Abstract: When vibration information calculated using measurement information is classified using a distance between measurement points which is calculated using the point information, even in a case in which a plurality of vibration modes with close vibration frequencies are present at the same time, stability determination at a high speed and a high accuracy is realized. A system stability monitoring apparatus which monitors system stability of a power system includes a measurement information collecting unit that collects measurement information of a plurality of points in the power system, a vibration analyzing unit that calculates vibration information indicating vibration of a system state in the plurality of points using the measurement information, an information storage unit that stores point information including position information of the plurality of points, and a vibration classifying unit that classifies the vibration information based on the point information.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: August 6, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Jun Yamazaki, Masahiro Yatsu, Sumito Tobe, Yasuo Sato, Osamu Tomobe, Eisuke Kuroda
  • Patent number: 10367410
    Abstract: The invention discloses a method and system for identifying an element parameter and a power correction factor of an electric power system. The method comprises: inputting an active power telemetering steady state value {circumflex over (P)}, a reactive power telemetering steady state value {circumflex over (Q)}, and a voltage telemetering state value Û of a power grid with n elements, to establish P+jQ={circumflex over (P)}+j{circumflex over (Q)}+G(?,{circumflex over (P)},{circumflex over (Q)}) for telemetering power, where G(?,{circumflex over (P)},{circumflex over (Q)}) is power correction function regarding {circumflex over (P)} and {circumflex over (Q)}, and ? is power correction factor; establishing F(Y,P,Q,Û)=0, where Y is an admittance matrix of the n elements; setting F(Y,P,Q,Û)=? and J=?T·?, minimizing J, and determining Y and ?; restoring element parameters including resistance R, reactance X and susceptance B from Y; and outputting R,X,B and ?.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: July 30, 2019
    Inventor: Yushan Hao
  • Patent number: 10361640
    Abstract: Provided are a cascaded photovoltaic grid-connected inverter and a control method and control device thereof. The method includes: determining whether at least one of inverter units of the inverter is over-modulated; if yes, calculating a maximum reactive power and a minimum reactive power permitted to be injected to a power grid in a situation that a power factor of a system is not less than a minimum permitted value; simulating an operation state of the inverter after the maximum reactive power is injected to the power grid and determining whether each of the inverter units in the operation state is in a modulating region; if yes, injecting a suitable reactive power to the power grid; and if no, controlling the inverter to exit an operation mode of independently performing maximum power point tracking control on each photovoltaic panel.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: July 23, 2019
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Le Yang, Shineng Yu, Jun Xu
  • Patent number: 10333520
    Abstract: Techniques facilitating on-chip supply noise voltage reduction and/or mitigation using local detection loops in a processor core are provided. In one example, a computer-implemented method can comprise detecting, by a processor core, a voltage droop at a first area of the processor core. The computer-implemented method can also comprise transmitting, by the processor core, voltage droop information to a local controller located in the first area and to a global controller located in the processor core. Further, the computer-implemented method can comprise applying, by the processor core, a first mitigation countermeasure at the first area of the processor core in response to a local instruction received from the local controller. The local instruction can comprise an indication of the first mitigation countermeasure.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 25, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Pradip Bose, Alper Buyuktosunoglu, Pierce I-Jen Chuang, Phillip John Restle, Christos Vezyrtzis
  • Patent number: 10303139
    Abstract: A system for managing performance of one or more electrical components in real-time includes one or more sensors to provide working conditions of one or more energy consuming devices. The system further includes one or more actuators coupled to and configured to control the one or more energy consuming devices. Additionally, the system includes a computing device in electrical communication with the one or more sensors and the one or more actuators. The system also includes a database capable of retaining an instruction program for the computing device. The computing device includes a processor that is configured to receive data from the one or more sensors, analyze data from the one or more sensors, and execute the instruction program received from the database in order to optimize operation of the one or more energy consuming devices based on one or more criteria.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 28, 2019
    Assignee: CREATIVE ESP INCORPORATED
    Inventors: Jie Chen, Ali Razban, Stanley Yung-Ping Chien, Amin Amini, Mustafa Saad Abdulwahhab Kamoona, Hamid Reza Piroozi
  • Patent number: 10270257
    Abstract: The HEMS of each consumer transmits the amount of surplus electricity that is expected by to be generated by a PV system, and/or the amount of electric power that is needed by a controllable load, in a predetermined time slot on a predetermined date, to a server apparatus. The server apparatus, based on the notified amount of surplus electricity and the amount of electric power that is needed by the controllable load, combines a first consumer and a second consumer so that the amount of electric power needed by the controllable load will be equal to or greater than the amount of surplus electricity. Then, under the control the HEMS of the second consumer, the surplus electricity that is generated by the first consumer is consumed by each controllable load.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 23, 2019
    Assignee: NEC CORPORATION
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Patent number: 10250038
    Abstract: The central voltage control device includes a power-distribution estimating unit to estimate a power distribution in the power distribution line on the basis of first received measurement information, a voltage-distribution estimating unit to estimate a voltage distribution of the power distribution line on the basis of the power distribution, a tap-position determining unit to determine a tap position of the voltage controller when a voltage deviates from the proper voltage range in the voltage distribution, and a correcting unit to correct the power distribution in the power distribution line on the basis of the received deviation information. When the power distribution is corrected, the voltage-distribution estimating unit estimates the voltage distribution using the corrected power distribution.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 2, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Nobuhiko Itaya
  • Patent number: 10237338
    Abstract: A service node performs computational tasks or other operations on behalf of a meter or other network device. A meter may collect data regarding electric parameters associated with an electric distribution network. When analysis of the collected data is required, the meter may determine that it requires the resources of a service node. The meter may send a request to a directory node to identify a service node or it may send a request seeking a service node. The service node performs the analysis and sends the results of the analysis back to the meter. The service nodes supports the dynamic distributed processing of analytic services.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 19, 2019
    Assignee: Landis+Gyr Innovations, Inc.
    Inventors: Keith Torpy, Ruben Salazar, David Decker, James Randall Turner
  • Patent number: 10185295
    Abstract: A controller dynamically identifies a switching frequency based power converter output load condition, input voltage, and/or temperature. The controller updates the operating switching frequency to the identified target switching frequency when the identified switching frequency is sufficiently different than a current operating switching frequency of the power converter. In this respect, switching frequency may be dynamically controlled to strike a balance between avoiding saturation of inductive elements and efficient operation of a power converter. A controller may also dynamically control switching frequency by having a thermo resistor incorporated into circuitry that determines switching frequency such that an increase in temperature beyond the threshold temperature directly causes a decrease in switching frequency.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 22, 2019
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Bernhard Siessegger, Saijun Zhang
  • Patent number: 10175276
    Abstract: A power monitor in a building processes a power monitoring signal obtained from the power line to the building to identify electrical events corresponding to state changes of devices in the building. The electrical event may be processed with a classifier to determine if the electrical event corresponds to a state change of an identified device from a list of identified devices or corresponds to a state change of an ambiguous device that is not from the list of identified devices. The power monitor may also determine power consumption information about individual identified devices and about groups of devices, such as a group of always on devices, a group of ambiguous devices, and categories of the group of ambiguous devices. Information about state changes of devices and power consumption of individual devices and groups of devices may be transmitted to a user device for presentation to a user.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: January 8, 2019
    Assignee: Sense Labs, Inc.
    Inventors: Matthew William Fishburn, Michael S. Phillips