For Electrical Fault Detection Patents (Class 702/58)
  • Patent number: 11885852
    Abstract: A battery management device manages an energy storage device to which a shunt resistor is connected. The battery management device includes: a current measurement unit that measures a current flowing through the shunt resistor using a pair of signal wires connected to both ends of the shunt resistor; a connecting wire that connects the signal wire to a reference potential source via an opening/closing switch; and a determination unit that determines presence or absence of a failure in which connection between the pair of signal wires via the shunt resistor becomes defective based on a change in current measured by the current measurement unit when the opening/closing switch is opened and closed.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: January 30, 2024
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Seiji Takai
  • Patent number: 11885843
    Abstract: A method, system and apparatus for fault detection in line protection for a power transmission system.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: January 30, 2024
    Assignee: Hitachi Energy Ltd.
    Inventor: Kai Liu
  • Patent number: 11867683
    Abstract: A method of analyzing dissolved gas in an oil-filled transformer includes determining a centroid of a polygon that represents a plurality of dissolved gas concentrations. A fault region in which the centroid of the polygon is located is determined, where the plurality of fault regions are defined in a composite fault region map that is a composite of a Duval Pentagons 1 and 2. The method classifies a fault experienced by the transformer based on the determined fault region within the composite fault region map. The classification is done by a machine learning classification technique. Further embodiments classify faults based on dissolved gas levels without determining a centroid of a polygon representing the dissolved gas levels. Related systems are also disclosed.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: January 9, 2024
    Assignee: HITACHI ENERGY LTD
    Inventor: Luiz Cheim
  • Patent number: 11846665
    Abstract: Aspects of the present disclosure are directed to systems and methods for detecting Partial Discharge (PD) associated with wide bandgap semiconductor-based electrical drive systems in real time. In one aspect, signals, including noise associated with drive switching and other background noises are detected using a sensing device. The signals are received by a real-time spectrum analyzer. The spectrum analyzer transforms the signals into the frequency domain and determines or registers the frequency domain profiles of the signals. The spectrum analyzer performs signal discrimination between at least one other signal included within the signals and switching noise based on their frequency domain profiles. Based on the discrimination analysis, the presence of a partial discharge signal may be detected. A physics-based signal discrimination approach can also be used for signal discrimination, for example utilizing pressure-dependency of characteristics of a PD signal.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: December 19, 2023
    Assignee: General Electric Company
    Inventors: Lili Zhang, Karim Younsi, Christopher Michael Calebrese, John Russell Yagielski, Han Xiong
  • Patent number: 11835568
    Abstract: Systems, methods, and computer-readable media are disclosed for monitoring and diagnosing power system assets. An example method may include triggering, by a gateway device and at a first time, a capture of a first waveform from a first intelligent electronic device (IED) associated with a first asset in a power system. The method may also include transmitting, by the gateway device, the capture of the waveform to a remote device. The method may also include extracting fault features from the first waveform corresponding to different failure modes associated with the asset of the power system. The method may also include determining, based on the features extracted from first waveform, that a fault of a first fault mode has occurred in the asset. The method may also include providing an alert that the fault has been identified, wherein the alert initiates or otherwise facilitates a control action in the power system.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: December 5, 2023
    Assignee: General Electric Company
    Inventors: Balakrishna Pamulaparthy, Ali Shahid, Sumitha Mohan, Rajagopal Kommu, Raju Gurrapu, Sergio Dominguez Ruiz
  • Patent number: 11835571
    Abstract: The invention relates to a device (D) for detecting a fault in an electrical network (1), comprising at least one electrical equipment (E) which is electrically connected to a first power conductor (C1) and to a second power conductor (C2), the electrical network (1) being provided with a common conductor (Cc). The device comprises a first measuring member (O1) of the common mode voltage present on the power conductors (C1, C2) and a second measuring member (O2) of a current flowing in the power conductors (C1, C2). The device also comprises a calculator (UP) configured to determine over a determined observation period a mixed energy (Emix) transported in the measurement region from the first variable (Vres) and the second variable (Inet). The invention also relates to an equipment, a localization system and a method for detecting a fault in an electrical network.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: December 5, 2023
    Assignees: SAFRAN ELECTRICAL & POWER
    Inventor: Lionel Cima
  • Patent number: 11837993
    Abstract: A system for controlling a photovoltaic system and a method and device for controlling a photovoltaic system are provided. The method includes that: whether an abnormity occurs to a control component which currently controls the photovoltaic system or not is determined; and under the condition of determining that the abnormity occurs, switching to another control component to control the photovoltaic system is executed. According to the disclosure, the technical problem of relatively low reliability of a control system for a photovoltaic system providing power for a smart home system in the related art is solved.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: December 5, 2023
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hongwei Xu, Guangzhi Qin, Kai Zhu, Zuoxin Jiang
  • Patent number: 11831137
    Abstract: A cargo (22) detection system for a refrigerated cargo container (10) includes a cargo sensor (50) body configured to detect presence of cargo (22) in a refrigerated cargo container (10) and a sensor bracket (56) configured for securing the cargo sensor (50) body at a refrigeration unit (24) of the refrigerated cargo container (10). A temperature sensor (72) is located at the cargo sensor (50) body and is configured to detect a temperature of the cargo sensor (50) body. A temperature controller (74) is operably connected to the temperature sensor (72) and is configured to activate the cargo sensor (50) body for collection of data when the temperature of the cargo sensor (50) body is above a threshold.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 28, 2023
    Assignee: CARRIER CORPORATION
    Inventors: Michael Stockbridge, William F. Caswell
  • Patent number: 11821960
    Abstract: An apparatus for diagnosing a degree of degradation of a battery includes a measuring unit configured to measure a voltage of each of a plurality of battery cells in each of a plurality of cycles where charging and discharging is performed and output voltage information about the plurality of measured voltages, and a control unit configured to receive the plurality of voltage information, calculate a voltage deviation of each cycle for each battery cell based on a reference voltage of each of the plurality of battery cells, select a cycle section satisfying a predetermined condition for each of the plurality of battery cells based on the calculated voltage deviation, calculate a voltage deviation change rate corresponding to each of the plurality of selected cycle sections, and diagnose a relative degree of degradation of the plurality of battery cells based on the plurality of calculated voltage deviation change rates.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: November 21, 2023
    Inventors: Ji-Yeon Kim, Young-Deok Kim, Yoon-Jung Bae
  • Patent number: 11821948
    Abstract: A measurement system for measuring a device under test is described. The measurement system includes a control and analysis module composed of one or more circuits, a stimulus module composed of one or more circuits, and a measurement interface composed of ,for example, one or more circuits. The stimulus module is configured to generate an electric stimulus signal based on predefined measurement parameters. The measurement system is configured to be connected to a device under test via the measurement interface. The measurement interface is configured to forward the electric stimulus signal from the stimulus module to the device under test. The measurement interface further is configured to forward a response signal from the device under test to the control and analysis module, wherein the response signal corresponds to a response of the device under test to the stimulus signal. The control and analysis module is configured to analyze the response signal, thereby generating a set of analysis data.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 21, 2023
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Philipp Weigell, Sascha Kunisch
  • Patent number: 11808248
    Abstract: A technique for performing condition monitoring of a plurality of components of a plurality of wind turbines is disclosed. The technique includes, for each of the plurality of wind turbines, measuring at least one time-series electrical output signal of the wind turbine generator, each time-series electrical output signal representing an aggregate of a plurality of subset signals. Such condition monitoring further includes mathematically extracting one or more such subset signals from the at least one time-series electrical output signal of the generator, and associating one or more such subset signals with one or more wind turbine components. A fault threshold value for each such one or more subset signals may be determined, and the one or more such subset signals are compared to such fault threshold value. Based on such association and comparison, the condition of such a wind turbine component of the plurality of wind turbines is determined.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: November 7, 2023
    Assignee: Fischer Block, Inc.
    Inventors: Margaret Paietta, Gregory Wolfe
  • Patent number: 11810209
    Abstract: A method, a computer system, and a computer program product for restoration time predictions and optimized recovery solutions is provided. Embodiments of the present invention may include selecting a dataset based on time series data. Embodiments of the present invention may include building one or more models, wherein the one or more models include a classification and regression tree model, a cross validated decision tree model or a bootstrap aggregating model. Embodiments of the present invention may include selecting a model for predictions using decision trees to reduce a variance of the model. Embodiments of the present invention may include rebuilding the model based on additional data attributes. Embodiments of the present invention may include determining an outage prioritization for each outage node. Embodiments of the present invention may include transmitting results of the outage prioritization.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: November 7, 2023
    Assignee: International Business Machines Corporation
    Inventors: Pranshu Tiwari, Atul Kumar Thapliyal, Harish Bharti, Abhay Kumar Patra
  • Patent number: 11791928
    Abstract: A digital data rate enhancement filter is described. The digital data rate enhancement filter-includes an enhancement filter input, a first interpolation filter, a second interpolation filter, and a multiplexer circuit. The first interpolation filter is connected to the enhancement filter input downstream of the enhancement filter input. The second interpolation filter is connected to the first interpolation filter downstream of the first interpolation filter. The enhancement filter input is configured to receive a digital input signal set. The first interpolation filter is configured to receive the digital input signal set and to interpolate the digital input signal set, thereby obtaining a first interpolated signal set. The second interpolation filter is configured to receive the first interpolated signal set and to interpolate the first interpolated signal set, thereby obtaining a second interpolated signal set.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: October 17, 2023
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Manuel Stein, Julian Leyh
  • Patent number: 11791622
    Abstract: A time-admittance fault detection and isolation system includes a series of time-admittance switches spaced apart along the power line, each including a respective time-admittance function. Together, the time-admittance functions define a cascade trip sequence in a downstream-to-upstream direction, which autonomously causes a closest upstream time-admittance switch to a fault to trip to isolate the fault on an upstream side of the fault without communication with the time-admittance switches. The fault detection and isolation system may also include a radio communicating a trip signal from the closest upstream time-admittance switch to the fault to a closest downstream time-admittance switch to the fault. The trip signal causes the closest downstream time-admittance switch to the fault to trip to isolate the fault on a downstream side of the fault. A tie switch closes to back-feed a portion of the electric power line downstream from the closest downstream time-admittance switch to the fault.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: October 17, 2023
    Assignee: SOUTHERN STATES, LLC
    Inventors: Joseph R Rostron, Jiyuan Fan
  • Patent number: 11791729
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: October 17, 2023
    Assignee: Astec International Limited
    Inventors: Chih-hao Hsu, Chang-Chieh Yu, Carl Walker, Chun-Wei Chang, Po-Tso Chen
  • Patent number: 11782084
    Abstract: A method, computer program, and computer system is provided for fault detection in an electrical network. An inductance between a reference point and a fault is determined at a first time based on measuring a fault current. A resistance between the reference point and the fault may be determined at a second time based on measuring a differential of the fault current as zero. A location of the fault may be identified based on the inductance and the resistance.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 10, 2023
    Assignee: HOWARD UNIVERSITY
    Inventor: Charles J Kim
  • Patent number: 11774472
    Abstract: A transformer area identification method includes: performing data acquisition on all sub-meters and a master meter in an identification domain to obtain a steady-state load, and generating a steady-state load jump curve; and performing load jump feature matching between steady-state load jump curves of all the sub-meters and a steady-state load jump curve of the master meter, and obtaining attribution of the sub-meters with a load jump according to matching results. A method for constructing transformer area line topology is further provided. A load jump identification technique is utilized to acquire a load value of each node in a transformer area power supply network, so as to form a load jump curve for each node. By performing load jump feature matching between load jump curves of all sub-meters and a load jump curve of a master meter, a mounting relationship of a corresponding electric meter is determined.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: October 3, 2023
    Assignee: BEIJING TENGINEER AIOT TECH CO., LTD.
    Inventors: Hongshan Chang, Guang He
  • Patent number: 11762007
    Abstract: Disclosed is a multi-core cable fault classification system which includes a reference signal measurement unit configured to measure a core-specific reference signal generated by applying an electromagnetic signal to a multi-core cable having at least two cores, a reflected-signal measurement unit configured to measure a core-specific reflected signal generated by reflecting the generated core-specific reference signal at a point of the multi-core cable, a data processing unit configured to extract, from time-series data for the measured core-specific reflected signal, core-specific partial time-series data based on whether baseline data of the multi-core cable is present, configured to transform the core-specific partial time-series data into a time-frequency distribution, and configured to extract faulty-core determination data, and a faulty core classification unit configured to classify a fault core from the multi-core cable by inputting the extracted faulty-core determination data to a neural network.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: September 19, 2023
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Yong-June Shin, Su Sik Bang
  • Patent number: 11762040
    Abstract: Apparatus and associated methods relate to predicting failure and/or estimating remaining useful life of an air-data-probe heater. Failure is predicted or useful life is estimated based on an electrical metric of the electrical operating power provided to a resistive heating element of the air-data-probe heater. The electrical metric of the air data probe heater is one or more of: i) phase relation between voltage across the resistive heating element and leakage current, which is conducted from the resistive heating element to a conductive sheath surrounding the resistive heating element; ii) a time-domain profile of leakage current through the heating element insulation during a full power cycle; and/or iii) high-frequency components of the electrical current conducted by the resistive heating element and/or the voltage across the resistive heating element.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: September 19, 2023
    Assignee: ROSEMOUNT AEROSPACE INC.
    Inventors: Kaare Josef Anderson, Magdi A. Essawy
  • Patent number: 11764568
    Abstract: Provided is a determination method of differential protection suitable for an electricity transmission line with multi-terminal T-connection.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 19, 2023
    Assignees: TAIZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER, STATE GRID CORPORATION OF CHINA
    Inventors: Ping Zhao, Chi Zhang, Yiping Shen, Yutao Qiu, Hua Xu, Xiaochun Xu, Hao Li, Yuande Zheng, Zaibing Zhou, Zhen Huang, Kang Wang, Jian Wu, Tao Zhu, Hao Tan, Ben Li, Qingchun Zhao, Xiaotong Zhu, Chen Zhou, Guode Ying, Zheng Qin, Xu Jiang
  • Patent number: 11747387
    Abstract: A computer implemented method, a fault detection and management system and a computer program product for managing an open circuit fault on an overhead line in a power network, are provided, that include obtaining overhead line data from a sensor mounted on the overhead line, determining fault detection parameters associated with one or more nodes of the overhead line on occurrence of a predefined node condition, that is, a low voltage and a negative rate of change of line current at the one or more nodes, and generating an output based on the fault detection parameters, wherein the output indicates potential presence of an open circuit at one or more nodes.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: September 5, 2023
    Inventors: Shibu Jolly, Mayur Mahambrey, Vengatasubramanian Muthuraman, Vivek Sharma
  • Patent number: 11742961
    Abstract: Among network devices for use within a wireless communication network, a transmitting network device is configured to transmit to a receiving network device via a control channel one or more control signals for configuring the receiving network device for a characterization of at least one of the transmitting network device and the receiving network device and/or for a characterization of one or more communication channels between the transmitting network device and the receiving network device.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: August 29, 2023
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Paul Simon Holt Leather, Thomas Haustein, Kei Sakaguchi, Ramez Askar
  • Patent number: 11710959
    Abstract: A system includes a transformer rectifier unit (TRU) having three inputs, a first AC bus configured to supply power to a first of the three inputs, a second AC bus configured to supply power to a second of the three inputs, and a third AC bus configured to supply power to a third of the three inputs. The system includes a power quality sense device electrically connected to each of the first, second and third AC busses. The system includes an electrically held contactor electrically connected between the TRU and the power quality sense device. The electrically held contactor is configured and adapted to be switched ON or OFF depending on whether the power quality sense device is energized or de-energized.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: July 25, 2023
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Robert L. Seagren
  • Patent number: 11681344
    Abstract: Detecting an imminent failure of a power supply. An internal computerized component periodically reads a set of measurements from one or more sensors affixed to a power supply. The internal computerized component and power supply may reside in a variety of different technical contexts. The internal computerized component analyzes the set of measurements using, at least in part, a weighted set of factors, to detect the imminent failure in the power supply. The weighted set of factors may be updated or revised over time and may be specifically tailored for use with specific types of power supplies.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: June 20, 2023
    Assignee: Harmonic, Inc.
    Inventor: Adi Bonen
  • Patent number: 11662224
    Abstract: A method for fail-safe resolver excitation includes generating a resolver excitation signal and providing the resolver excitation signal to an input of a first resolver control circuit and to an input of a second resolver control circuit. The method also includes, in response to the first resolver control circuit detecting a fault in the resolver excitation signal provided to the first resolver control circuit: biasing, using the first resolver control circuit, a first resolver amplifier; and communicating, via a communication bus between the first resolver control circuit and the second resolver control circuit, an indication to the second resolver control circuit that the first resolver control circuit detected the fault in the resolver excitation signal provided to the first resolver control circuit.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 30, 2023
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Ihab Nahlus, Marc R. Engelhardt, Mark R. Keyse
  • Patent number: 11652434
    Abstract: Provided is a noise remover of a PWM motor without a frequency control filter in a PWM control motor, and more particularly, includes a micom formed in the vehicle terminal and converting to and transmitting the frequency avoiding the radio frequency; a frequency filter for suppressing the noise converted by the micom; a motor part for transmitting the frequency that the frequency filter outputs to a vehicle motor, and operating the motor; and a pulse modulation/demodulation control part for controlling the rotation amount of the vehicle motor inside the motor part, which are divided roughly as four, and rotate a rotor of the motor part without noise by selectively applying the frequency which is not overlapped with radio frequency to a first FET, a second FET, a third FET, and a fourth FET.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: May 16, 2023
    Assignee: Robert Bosch GmbH
    Inventor: Hoon Lee
  • Patent number: 11646681
    Abstract: Techniques for monitoring the health of a three-phase induction motor are provided. An expected threshold value is calculated as a function of an expected ratio of current unbalance to voltage unbalance for the three-phase motor. Embodiments determine whether a measured current unbalance exceeds the expected threshold value. Responsive to the measured current unbalance exceeding the expected threshold value, a remedial action may be taken, such as generating diagnostic information or activating one or more protection operations for the three-phase induction motor.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: May 9, 2023
    Assignee: Schneider Electric USA, Inc.
    Inventors: Kevin M. Jefferies, Benjamin W. Edwards, Alan E. Freeman, Richard K Weiler, Matthew L. White
  • Patent number: 11626737
    Abstract: A method of controlling a renewable energy power plant is provided. The method includes retrieving output power measurement values for each inverter of a total number of inverters from a plurality of sensors provided at a location proximal to each inverter and retrieving a point of interconnection (POI) output measurement value for the renewable energy power plant based on a plurality of ON inverters of the total number of inverters. The method also includes calculating a POI measured setpoint for the renewable energy power plant based on a difference between a power reference value for the renewable energy power plant and the retrieved POI output measurement value for the renewable energy power plant, assigning a setpoint to each of the ON inverters and classifying each ON inverter as either a TRACKING ON inverter or a NON-TRACKING ON inverter based on whether each ON inverter is tracking at the setpoint.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: April 11, 2023
    Assignee: Also Energy, Inc.
    Inventor: Zachary M. Wenrick
  • Patent number: 11619669
    Abstract: The condition monitoring system includes an acquisition unit and a generation unit. The acquisition unit acquires waveform data from a measuring device to measure an electrical signal that is either output or input of a converter. The waveform data represents a waveform of the electrical signal. The generation unit generates, based on the waveform data, analysis data to monitor the condition concerning the converter. The generation unit obtains, by frequency analysis, a plurality of combinations, each including a value of a frequency and a value of a feature quantity that is either intensity or phase, based on the waveform data when a value of the drive frequency varies and thereby generate the analysis data having at least three variables including the frequency, the feature quantity, and the drive frequency.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 4, 2023
    Assignee: PANASONIC IN IELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shin Tabuchi, Satoshi Kanai, Hiromichi Nishiyama
  • Patent number: 11594874
    Abstract: A method for detecting fault in a power transmission line of a power transmission system and protection system using the same. The method includes: obtaining a system parameter of the power transmission system, adjusting protection reachability of a fault detecting element based on the obtained system parameter such that the adjusted protection reachability of the fault detecting element is applicable to a predetermined protection range, identifying whether there is an internal fault occurring on the transmission line using the adjusted fault detecting element, and generating a fault detection decision signal indicating the identified fault. If the predetermined protection range is desirable for the fault detecting element, its protection reachability may be adjusted in consideration of the influence imposed by the SIR such that the reach point of the adjusted fault detecting element can be extended to approach the end of the predetermined protection range.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: February 28, 2023
    Assignee: HITACHI ENERGY SWITZERLAND AG
    Inventors: Kai Liu, Jianping Wang, Youyi Li
  • Patent number: 11587481
    Abstract: A display device can include a display panel having a plurality of sub pixels, each of the sub pixels including a switching transistor, a driving transistor, a sensing transistor, a storage capacitor, and a light emitting element; and a detector configured to sense a voltage difference between a first electrode of the sensing transistor and a second electrode of the sensing transistor for determining that an anode and a cathode of the light emitting element are shorted, in which a gate electrode of the switching transistor and a gate electrode of the sensing transistor are connected to a same gate line.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 21, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: SangGoo Kwon, MooKyoung Hong
  • Patent number: 11577624
    Abstract: A battery system includes at least one battery including a plurality of cells and a hybrid control module configured to monitor a differential capacity of the at least one battery, determine when the monitored differential capacity of the at least one battery corresponds to a predetermined differential capacity of the at least one battery, and determine a state of charge of the battery in response to the determination that the monitored differential capacity corresponds to the predetermined differential capacity.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: February 14, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Saad Hasan, Dave G. Rich
  • Patent number: 11579614
    Abstract: A set of input conditions is obtained. A plurality of potential decisions is obtained based at least in part on the set of input conditions. A rule-based system is used to process the plurality of potential decisions and obtain a set of one or more updated potential decisions, wherein: the rule-based system specifies a plurality of rules; a rule specifies a rule condition and a corresponding action, wherein when the rule condition is met, the corresponding action is to be performed; and using the rule-based system to process the plurality of potential decisions includes: for a selected potential decision in the plurality of potential decisions, determining whether the rule condition is met for a selected rule among the plurality of rules, wherein the selected rule condition is dependent on, at least in part, the selected potential decision; and in response to the selected rule condition being met, performing the corresponding action. The set of one or more updated potential decisions to be executed is output.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: February 14, 2023
    Assignee: OptumSoft, Inc.
    Inventor: David R. Cheriton
  • Patent number: 11568499
    Abstract: A method, a device, and a non-transitory storage medium to receive from customer devices, sensor messages indicating a power state of on or off, a location, and a timestamp; select an element of a utility system based on the sensor messages; determine a power state of on or off for the element based on the sensor messages and a location and time pertaining to the element; store a temporal and spatial model that includes an outage event; receive weather data pertaining to the element; generate an outage model based on the temporal and spatial model and the weather data; receive forecasted weather data; calculate a predicted outage pertaining to one or more elements of the utility system based on the outage model and the forecasted weather data; and transmit a message that includes the predicted outage.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: January 31, 2023
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Jean F. Dubois, Patrick J. Moran
  • Patent number: 11543326
    Abstract: The present disclosure provides a method and system for performing fault diagnosis by bearing noise detection. The method provides: collecting noise in bearing detection, the noise comprising bearing noise and operating condition noise; subjecting the collected noise to pre-processing, to obtain a first time domain signal and a second frequency domain signal; and inputting the first time domain signal and second frequency domain signal to a bearing fault diagnosis model. The bearing fault diagnosis model includes a characteristic extraction model and a fault discrimination model, the characteristic extraction model subjects the first time domain signal and second frequency domain signal to characteristic extraction separately to obtain a first characteristic associated with a time domain shock peak and a second characteristic associated with a fault frequency peak.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: January 3, 2023
    Assignee: Aktiebolaget SKF
    Inventors: Gang Cheng, Linhui Liu
  • Patent number: 11525846
    Abstract: In a meter for performing a measurement of an electrical parameter, an output from a sensor is sampled to produce at least one sample, and an iterative method is performed comprising: producing further samples; holding in memory a stored array of samples comprising the at least one sample and each of the further samples from each iteration; determining a measure of statistical variability of a mean for the respective iteration from a measure of statistical variability and from the number of samples used to generate the measure of statistical variability; comparing the measure of statistical variability of the mean with a pre-determined threshold; and generating an electrical signal indicating a state of the measurement if the measure of statistical variability of the mean of the samples taken during the measurement is less than or equal to the pre-determined threshold.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: December 13, 2022
    Assignee: Megger Instruments Ltd.
    Inventors: Stanislaw Zurek, Jeffrey Jones
  • Patent number: 11525521
    Abstract: An instruction duty computation unit computes an instruction duty ratio representing a ratio between an energization time and a non-energization time of a motor based on an actual rotation angle detected by a rotation angle sensor and a target rotation angle of a valve member. The rotation angle sensor detects an actual rotation angle of a valve member of a fluid control valve. A stress computation unit computes a valve member load torque of the valve member based on the actual rotation angle and an actual duty ratio of the motor. An actual duty computation unit computes a new value of the actual duty ratio based on an instruction duty ratio computed by using an instruction duty computation unit and a valve member load torque computed by using a stress computation unit.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: December 13, 2022
    Assignee: DENSO CORPORATION
    Inventor: Yosuke Tanaka
  • Patent number: 11520676
    Abstract: A method and a system for power equipment diagnosis based on windowed feature and Hilbert visualization are provided, which belong to the field of power equipment fault diagnosis. The method includes: obtaining an original data set of monitoring data containing power equipment fault features; introducing windowed feature calculation considering logarithmic constraints to process data to obtain a feature sequence; using Hilbert visualization method for further processing to obtain a Hilbert image data set used to train and verify a convolutional neural network; and finally directly inputting newly obtained test sample data after windowed feature calculation and Hilbert visualization processing into the trained network for fault diagnosis and location.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: December 6, 2022
    Assignee: WUHAN UNIVERSITY
    Inventors: Yigang He, Xiaoxin Wu, Jiajun Duan, Xiaoyan Liu, Lie Li, Zhaorong Zeng
  • Patent number: 11522353
    Abstract: Systems and methods for detecting and identifying arcing are disclosed. A method of detecting arcing includes obtaining data indicative of voltage and data indicative of current, determining a waveform of a cycle of a primary load current according to the data indicative of current, determining at least one noise signal according to the determined waveform of a cycle of the primary load current and the data indicative of current, determining a probability density of the noise signal according to a time window, and comparing the probability density of the noise signal with at least one model probability density.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: December 6, 2022
    Assignee: Hubbell Incorporated
    Inventor: Gary Michael Miller
  • Patent number: 11508020
    Abstract: A method for operating a power consumption metering system and a power consumption metering system are disclosed. In an embodiment a method include measuring, by a sensor deployed at a monitored site, high speed power consumption values over time to obtain a high speed value pattern of power consumption with a resolution of more than 1000 values per second, determining one or more harmonics of the high speed value pattern, measuring, by the sensor, low speed power consumption values over time to obtain a low speed value pattern of the power consumption with a resolution of less than 100 values per second, providing the harmonics and the low speed value pattern to a cloud based data processing system and identifying a status of a power consumer of the monitored site dependent on the measured harmonics and the low speed value pattern.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: November 22, 2022
    Assignee: ENERGYBOX LTD.
    Inventors: Dirk Beiner, Tak Yan Lai, Yiu Kwong So
  • Patent number: 11503862
    Abstract: A power supply unit for an aerosol generation device includes an internal power supply configured to hold power supplied to a heater configured to heat an aerosol source, a first connector connectable to an external device and including a first communication terminal, a controller configured to control power supply from the internal power supply to the heater and including a second communication terminal, a first communication path between the first communication terminal of the first connector and the second communication terminal of the controller, and a switch unit positioned on the first communication path and configured to set the first communication path to a conductive state or a disconnected state.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: November 22, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventor: Takao Aradachi
  • Patent number: 11501649
    Abstract: This application discloses a drone control method and device and a drone and pertains to the technical field of drone control. The method includes: monitoring a running status of each power motor in a drone; determining according to the running status of each power motor whether the drone is in a crashed state; and controlling the drone to alarm when determining that the drone is in the crashed state. The drone control method and device and the drone can rapidly locate a crashed drone, greatly increasing the probability of finding back the crashed drone.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: November 15, 2022
    Assignee: AUTEL ROBOTICS CO., LTD.
    Inventors: Yidong Chen, Xiangxi Pan
  • Patent number: 11489490
    Abstract: An arc fault detection method for a photovoltaic system based on an adaptive kernel function and instantaneous frequency estimation includes steps of: sampling signal xt in a time window length of TNCT and obtaining an iterative time-frequency diagram of xt by nonlinear chirplet transform; extracting detection variables based on frequency component in the selected iterative time-frequency diagram to determine a moment when spectrum energy increases; when the moment is found, obtaining a matrix distribution form of the xt in time-frequency domain obtained by the adaptive optimum kernel time-frequency representation, and processing the matrix with sum of squares in a time dimension to obtain a column vector; processing each selected frequency bands with integration operation in a frequency dimension to obtain multiple detection variable values as inputs of a well-trained Naive Bayes model.
    Type: Grant
    Filed: December 29, 2018
    Date of Patent: November 1, 2022
    Assignee: XI'AN JIAOTONG UNIVERSITY
    Inventors: Xingwen Li, Silei Chen, Yu Meng
  • Patent number: 11489454
    Abstract: A method for calculating a maximum output current of multiple thyristor converters connected in parallel, step 1: setting an operating time t; step 2: assuming a trigger angle; step 3: calculating a maximum output current of a single converter according to an output current model for the single converter; step 4: equally dividing a total output DC current into a plurality of parts according to a working duration of six converter bridge arms, thereby obtaining a pulse operating current of a single bridge arm; step 5: checking whether a present junction temperature of a thyristor is below a limiting temperature based on a thermal resistance model for the thyristor, if no, correcting the trigger angle, and repeating step 2 to step 5 until the condition is met; step 6: giving a present trigger angle; and step 7: giving a maximum output current of multiple converters connected in parallel.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: November 1, 2022
    Assignee: HEFEI INSTITUTES OF PHYSICAL SCIENCE, CHINESE ACADEMY OF SCIENCE
    Inventors: Liansheng Huang, Zhongma Wang, Peng Fu, Shiying He, Xiaojiao Chen, Xiuqing Zhang, Tianbai Deng, Tao Chen, Zhenshang Wang
  • Patent number: 11467214
    Abstract: One illustrative method comprises retrieving a set of drive information associated with an operation of an electric drive in a time period from a drive control unit and one or more sensor units. The method further includes obtaining reliability information associated with the electric drive from a server. The reliability information is computed in the server, with the set of drive information and a model corresponding to a drive type of the electric drive. The reliability information includes a probability of occurrence of the abnormal condition in a specified future time period. The method further includes, providing at least one condition indication regarding the abnormal condition to one of a human machine interface and a drive controller based on the probability of occurrence of the abnormal condition.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: October 11, 2022
    Assignee: ABB Schweiz AG
    Inventors: Jinendra Gugaliya, Rahul Kumar-Vij, Abhilash Pani, Arpit Sisodia, Nikhil Venkata Saisantosh Podila
  • Patent number: 11456698
    Abstract: A photovoltaic (“PV”) sensor for the early detection of potential induced degradation (“PID”) comprising a housing; a power source located within the housing; an electrical connection presented by the housing for electrically communicating the power source with a PV module; and wherein current supplied by the power source to the PV module is less than 10 mA.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: September 27, 2022
    Assignee: University of Cyprus
    Inventors: Michalis Florides, George Makrides, George E. Georghiou
  • Patent number: 11435212
    Abstract: A method for monitoring a measurement variable and performing predictive monitoring of a compliancy of a characteristic of a field device to a requirement is described. The method includes a step of determining a deviation between a measured value of a monitored variable and a reference value of the monitored variable. The deviation is indicative of a degree of compliancy to the requirement. The method also includes a step of applying a filter to the deviations based on the deviations and the filtered deviations. The method further includes a step of determining a noise superimposed on the filtered deviations. At the end of a monitoring interval, a time remaining until the deviations will exceed the deviation range is determined using a Monte Carlo simulation.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: September 6, 2022
    Assignee: ENDRESS+HAUSER GROUP SERVICES AG
    Inventor: Dimitri Vaissiere
  • Patent number: 11424617
    Abstract: A bypass mechanism for a photovoltaic module which switches out the electronics and switches in a bypass mechanism.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 23, 2022
    Assignee: Solaredge Technologies Ltd.
    Inventors: Meir Gazit, Israel Gershman, Ehud Kirmayer, Leon Kupershmidt, Meir Adest
  • Patent number: 11398336
    Abstract: A transformer assembly includes an electric transformer a temperature sensor system, and a computation unit for determining a thermal state of the electric transformer. The electric transformer includes a cooling device having at least one liquid coolant channel to absorb exhaust heat from the electric transformer a heat spreader for transferring heat from the liquid coolant to a heat dissipation surface of the heat spreader, and an air blower configured to effect an airstream along the heat dissipation surface. The temperature sensor system includes an entering coolant sensor for providing an entering coolant temperature signal, a leaving coolant sensor for providing a leaving coolant temperature signal, an entering airstream sensor for providing an entering airstream temperature signal, and a leaving airstream sensor for providing a leaving airstream temperature signal. The computation unit is configured to determine a thermal state of the transformer.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: July 26, 2022
    Assignee: Hitachi Energy Switzerland AG
    Inventors: Stephane Isler, Valter Porcellato
  • Patent number: 11381169
    Abstract: The technology described herein is directed to a DC input power supply unit with an auxiliary boost control circuit (or controller) that facilitates continuous supply of power to a standby output load of the power supply unit in a bootloader mode. More specifically, the auxiliary boost circuit (or controller) is configured to assume control of a primary power boost stage from a primary controller in a bootloader mode so that the power supply unit can continue to supply power to the standby output with a protection function regardless of the state of the power supply unit or primary controller.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: July 5, 2022
    Assignee: Astec International Limited
    Inventors: Chih-hao Hsu, Chang-Chieh Yu, Carl Walker, Chun-Wei Chang, Po-Tso Chen