With Coupling Means (e.g., Attenuator, Shunt) Patents (Class 324/126)
  • Patent number: 11313895
    Abstract: A sensor system for an electric power asset includes a sensor instrument coupleable to sensors associated with the electric power asset to receive sensor signals therefrom, and an antenna connection cable coupled to the sensor instrument. The antenna connection cable includes a cable sheath and a plurality of twisted pair signal carriers contained within the cable sheath to carry sensor signals received from the electric power asset. A first subset of the plurality of twisted pair signal carriers carry antenna signals and a second separate subset of the plurality of twisted pair signal carriers carry signals for partial discharge monitoring.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: April 26, 2022
    Assignee: ROSEMOUNT INC.
    Inventor: Jeffrey C. Andle
  • Patent number: 11293948
    Abstract: A system and a method for correcting a current value of a shunt resistor, which calculate a change amount of a resistance value by using a variable temperature value of a shunt resistor and calculate a real-time current value flowing in the corresponding shunt resistor based on the calculated change amount of the resistance value and voltage values of both terminals of the shunt resistor, so that even though the temperature value of the shunt resistor is continuously changed, an accurate current value may be obtained by reflecting all the changes.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: April 5, 2022
    Inventors: Hyunki Cho, Jaedong Park
  • Patent number: 11280810
    Abstract: A meter apparatus is provided for determining parameters of an AC electric signal in first and second wires, the AC signal including an AC electric current and an AC electric voltage, the apparatus including a measurement section to provide first and second measure signals each one indicative of the AC voltage based on a first capacitive coupling with the first wire and on a second capacitive coupling with the second wire, the first and second measure signals depending on capacitance values of the first and second capacitive couplings, and a control unit to determine said capacitance values of the first and second capacitive couplings according to the first and second measure signals, and determining the amplitude of the AC voltage according to the first or second measure signal, and to the capacitance values of the first and second capacitive couplings.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: March 22, 2022
    Assignee: TELECOM ITALIA S.p.A.
    Inventors: Domenico Balsamo, Valter Bella, Fabio Luigi Bellifemine, Luca Benini, Davide Brunelli, Clemente Villani
  • Patent number: 11280849
    Abstract: The invention relates to a method for cable condition monitoring of an electric cable. The method comprises inducing a test current in the electric cable, measuring a resulting current in a measurement point of the electric cable by measuring a magnetic nearfield of the electric cable, measuring a resulting voltage in the measurement point of the electric cable by measuring an electric nearfield of the cable, calculating an impedance of the electric cable based on the resulting current and the resulting voltage by a line resonance analysis system, and analysing the impedance by the line resonance analysis system establishing a condition of the electric cable. A coupler arrangement providing a non-galvanic connection to the cable is also disclosed.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 22, 2022
    Assignee: WIRESCAN AS
    Inventors: Truls Fallet, Sigbjørn Kolberg
  • Patent number: 11201501
    Abstract: An embodiment of the present disclosure provides an electromagnetic inductive power supply apparatus comprising: an upper housing disposed on the upper side of a lower housing and having an elevating guide; a base disposed above the upper housing; a pressing support disposed on the lower side of the base part and having a guide bar which is coupled to the elevating guide so as to move up and down while being guided by the elevating guide, and one end of which is fastened to the lower housing; a lower core installed in the lower housing; and an upper core installed in the upper housing and forming a magnetic circuit inner space through which a line passes when the upper core is connected to the lower core.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: December 14, 2021
    Assignee: AMOSENSE CO., LTD
    Inventors: Sang Dong Jeong, Jin-Pyo Park, Won-San Na
  • Patent number: 11199574
    Abstract: A device and a method for testing receptacle wiring are revealed. The device for testing receptacle wiring includes a signal transmitter and a receiver. The signal transmitted is plugged into a receptacle to be tested while the receiver is used to detect voltage signals of no-fuse breakers (NFB) and receive signals from the signal transmitter so as to find out correspondence between the NFB and the receptacle correctly.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: December 14, 2021
    Assignee: PEACEFUL THRIVING ENTERPRISE CO., LTD.
    Inventors: Shih-Hsiang Chien, Mu-Tsan Yu
  • Patent number: 11163007
    Abstract: A current detection circuit to detect an electric current of the battery pack includes an insulating substrate, a first busbar and a second busbar disposed on a first surface of the insulating substrate, a shunt resistor disposed between the first busbar and the second busbar on the first surface, and electrically connected to the first busbar and the second busbar, and a hall effect sensor disposed on a second surface of the insulating substrate, wherein the second surface is opposite the first surface.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 2, 2021
    Inventor: Hyeon-Jin Song
  • Patent number: 11137423
    Abstract: Contactless voltage transducer for measuring voltages between at least two conductors of an alternating voltage conductor system, the transducer including two or more capacitive current measurement units, each said capacitive current measurement unit comprising an electrode surrounding a passage for receiving therethrough a respective said conductor of the alternating voltage conductor system, an electrode shield surrounding the electrode, an electrode signal processing circuit portion connected to the electrode and electrode shield, configured to output an analog measurement signal, and a reference voltage signal generator connected to the electrode shield and configured to generate a reference voltage source signal, wherein the reference voltage signal generators of the two or more capacitive current measurement units are connected together at a common floating voltage connection point.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: October 5, 2021
    Assignee: LEM International SA
    Inventors: Félix Buhlmann, Dominik Schläfli, Wolfram Teppan
  • Patent number: 11099214
    Abstract: A sensor for a separable connector includes a plug body, one or more high voltage capacitors, one or more low voltage capacitors, and a low voltage connection. The plug body includes an insulating resin. The plug body can be inserted into the separable connector to encase a high voltage conductor disposed in the separable connector. The one or more high voltage capacitors are encased by the insulating resin and can be electrically coupled to the separable connector at a first end portion when the plug body is inserted. The one or more low voltage capacitors are electrically coupled in series to the one or more high voltage capacitors to form a capacitive voltage divider. The low voltage connection provides a low voltage signal corresponding to a high voltage signal present in the separable connector. Signal conditioning electronics or a memory may also be included.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: August 24, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Jaylon D. Loyd, Christopher R. Wilson, Carl J. Wentzel
  • Patent number: 11092632
    Abstract: A resistance-measuring device mountable to a component of a current-carrying transmission line. The device includes a body having a base and two arms with interconnected first ends and spaced-apart second ends. The arms define a gap therebetween. Each arm has an inner portion facing the gap. The body is displaceable to mount the body about the component and position the component within the gap. The body has an abrading mechanism mounted to the arms. The abrading mechanism has an electrically-conductive abrading element disposed along the arm and facing inwardly toward the gap. The abrading element rubs against an outer surface of the component upon displacing the body to mount the body about the component. A method is also disclosed.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 17, 2021
    Assignee: HYDRO-QUEBEC
    Inventors: Samuel Lavoie, Ghislain Lambert
  • Patent number: 11085972
    Abstract: Methods, systems, and apparatus, including computer programs stored on a computer-readable storage medium, for obtaining, from an electric field sensor, measurements of a net electric field resulting from a combination of respective electric fields from two or more electrical power conductors that are proximate to the electric field sensor. The apparatus detects a change in successive measurements of the net electric field. The apparatus determines, based on the change, that an electrical fault has occurred in one of the two or more electric power conductors. The apparatus sends to a server system, data indicating that the electrical fault has occurred in one of the two or more electric power conductors.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 10, 2021
    Assignee: X Development LLC
    Inventors: Leo Francis Casey, Siyuan Xin
  • Patent number: 11073539
    Abstract: A split core current sensor a core subdivided into a first core section and a second core section, each of which have a first end and a second end. The first core section and the second core section are spaced apart by a gap. The sensor also includes a plurality of coil windings disposed about the core. A first coil winding is disposed proximate to the first end of the first core section; a second coil winding is disposed proximate to the second end of the first core section; a third coil winding is disposed proximate to the first end of the second core section; and a fourth coil winding is disposed proximate to a second end of the second core section. Each of the first core section and the second core section include a central portion disposed between the first and second ends that is free of coil windings.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: July 27, 2021
    Assignee: ABB Schweiz AG
    Inventors: Steven A. Shaw, Vivek Siddharth
  • Patent number: 10983239
    Abstract: Multi-frequency buried object location system transmitters and locators are disclosed. A transmitter may generate and provide output signals to a buried object at a plurality of frequencies, which may be selected based on a connection type. Corresponding locators may simultaneously receive a plurality of magnetic field signals emitted from the buried object and generate visual and/or audible output information based at least in part on the plurality of received magnetic field signals. The visual and/or audible output may be further based on signals received from a quad-gradient antenna array.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 20, 2021
    Assignee: SEESCAN, INC.
    Inventors: Mark S. Olsson, David A. Cox, Stephanie M. Bench, Jan Soukup, Timothy M. Turner, Ryan B. Levin, Ray Merewether
  • Patent number: 10983156
    Abstract: Embodiments of the present disclosure may enable an electrical component within an electrical distribution equipment cabinet to be audibly monitored via an electrical fault detection device mounted on the housing of the cabinet. The electrical fault detection device may comprise a sensor to detect a signal emitted from an electrical fault within the cabinet, a transducer to convert the detected signal into an electrical audio signal, and an output socket adapted for an external device that may generate an audible sound based on the detected signal. The detected sensor may be an ultrasound sensor and the detected signal may be an ultrasound emitted from the electrical fault.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: April 20, 2021
    Assignee: IRISS HOLDINGS, INC.
    Inventor: Martin Robinson
  • Patent number: 10976352
    Abstract: A current sensor configured to detect electric current flowing through an object to be measured in a state where the current sensor encloses the object to be measured includes a coil body configured to detect the electric current flowing through the object to be measured, and a holding portion to which a base end portion of the coil body is attached, the holding portion being configured to insert and hold a leading end 1a of the coil body in an insertion port. A part having a greater curvature than a curvature of the base end portion is formed in a leading end portion having the leading end of the coil body.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: April 13, 2021
    Assignee: HIOKI E.E. Corporation
    Inventors: Atsushi Nomura, Shunsuke Suzuki
  • Patent number: 10976355
    Abstract: A shunt resistor mounting structure comprising: a resistor including a pair of terminal portions and adapted to perform current sensing; and a mounting board. The mounting board includes: a mounting portion including a pair of a first land and a second land to which the pair of terminal portions are respectively connected, and which allow a current to be measured to flow through the resistor; a substrate having the pair of lands formed thereon; a first voltage terminal formed on the substrate and including a line pattern led out from the first land; and a second voltage terminal including a wire connected to the terminal portion corresponding to the second land.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 13, 2021
    Assignee: KOA CORPORATION
    Inventors: Keishi Nakamura, Susumu Toyoda
  • Patent number: 10971295
    Abstract: The present disclosure relates to ensuring contact between core halves of a current transformer. For example, a current transformer (CT) may include a split core comprising a first core half having a first plurality of faces and a second core half having a second plurality of faces. Each face of the first core half may contact a corresponding face of the second core half to allow magnetic flux to flow through the split core to induce current on windings of the CT. The CT may include a first housing that houses the first core half and a second housing that the second core half. The CT may include a biasing element that biases the second core half towards the first core half to ensure that each face of the second core half contacts the corresponding face of the first core half.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 6, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Mark A. Thomas, Eric Ryan
  • Patent number: 10938129
    Abstract: An electrical assembly includes a first conductor, a second conductor, and a bus bar. The first conductor is disposed on a terminal block and defines a first conductor opening. The second conductor is spaced apart from the first conductor. The bus bar extends from an electrical component. The bus bar has a first bus bar surface that is arranged to engage the first conductor and a second bus bar surface that is disposed opposite the first bus bar surface. The second bus bar surface is arranged to engage the second conductor. Each of the first bus bar surface and the second bus bar surface extends between an end surface of the bus bar and the electrical component.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: March 2, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Francis C. Belisle
  • Patent number: 10928436
    Abstract: Embodiments of the disclosure are to evaluation of a phase-resolved partial electrical discharge (PD) of equipment insulation. In one embodiment, a method includes providing Phiqn-arrays by a measurement device configured to detect a PD process in electrical equipment. The electrical equipment can include high voltage insulation. The method further includes associating, by an equipment controller communicatively coupled to the measurement device, at least one Phiqn-pattern present in the Phiqn-arrays with a geometrical shape. The method also includes tracking, by the equipment controller, parameters of the geometrical shape in the Phiqn-arrays. The method also includes determining, by the equipment controller and based on the parameters of the geometrical shape, a discharge intensity associated with the Phiqn-pattern. The method may further include providing, by the equipment controller and based on the discharge intensity, a signal indicative of a condition of the high voltage insulation.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: February 23, 2021
    Assignee: General Electric Company
    Inventors: Jan Thomas Palme, Maximilian Hobelsberger
  • Patent number: 10901005
    Abstract: A coil that includes an elongate conductor.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: January 26, 2021
    Assignee: Veris Industries, LLC
    Inventor: Martin Cook
  • Patent number: 10788515
    Abstract: A shunt is composed of multiple pieces with at least some of the pieces being connected by a conductive channel that provides uniform flow of current. The conductive channel may be a recess, raised portion, stand-alone component, or other channel that directs current to flow from one piece of the shunt to another piece in a uniform manner, resulting in an accurate current reading for the shunt. Further, the shunt may include multiple pieces that are composed of different materials.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 29, 2020
    Assignee: Itron, Inc.
    Inventor: David Nelson Makinson
  • Patent number: 10782320
    Abstract: A method for measuring a temporal drainage of an alternating current flowing through a measurement object, in which a Rogowski-Steinhaus-Chattock coil is aligned on the measurement object, at least one isolating line is inserted into coil windings of the Rogowski-Steinhaus-Chattock coil, said isolating line minimizing a capacitive coupling of the coil windings of the Rogowski-Steinhaus-Chattock coil with one another and/or with at least one further electrical line, and a voltage induced by the alternating current in at least one measuring line comprising the Rogowski-Steinhaus-Chattock coil is measured. A corresponding sensor and a method for providing a sensor of this type are furthermore disclosed.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: September 22, 2020
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Stefan Götz, Hermann Dibos, Rafael Banzhaf
  • Patent number: 10782196
    Abstract: A semiconductor device includes a strain gauge on a substrate, the strain gauge configured to measure a stress of the substrate; and a temperature sensor disposed within the substrate, the temperature sensor being decoupled from the stress of the substrate.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: September 22, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventor: Daniele Caltabiano
  • Patent number: 10677846
    Abstract: A device, including: a sensor circuit that senses the state of contact impedance of a mechanical electrical switch; and a switch-off circuit that represents a sensed high impedance contact of the switch as a low or constant impedance, where the sensor circuit detects an open or closed condition of the switch by sensing a voltage across the switch passing a threshold value.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 9, 2020
    Assignee: HYDRA-ELECTRIC COMPANY
    Inventor: Robert Andrew Guziak
  • Patent number: 10670503
    Abstract: A configuration for monitoring gas-filled containers includes at least one measuring device for measuring at least one parameter of the gas in the container, a communication device which is suitable for transmitting information about the gas to an evaluation device, and an energy supply device which is suitable for acquiring electrical energy from the surrounding electromagnetic radiation. In addition, a system having the configuration and a corresponding method are provided.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: June 2, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventor: Bastiaan Brand
  • Patent number: 10641798
    Abstract: Provided is a current detection device that enables to eliminate the influence of vibration that is applied to a bus bar, which is configured as a shunt resistor and measures current with high accuracy and high reliability. The current detection device is provided with a first wiring member and a second wiring member consisting of a conductive metal material, and a resistor body consisting of a metal material having a lower temperature coefficient of resistance than those wiring members and is joined between the first wiring member and the second wiring member, wherein a connection portion for making a connection to another wiring member or device is formed at an end of the first wiring member and second wiring member, the end being an opposite side from a joint with the resistor body, and a fixing member is provided between the connection portion and the joint with the resistor body.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: May 5, 2020
    Assignee: KOA CORPORATION
    Inventors: Keishi Nakamura, Koichi Minowa
  • Patent number: 10645556
    Abstract: A wireless data transmitting device comprising a first antenna unit for receiving energy from an alternating electromagnetic field and for converting the energy into an alternating current energy signal and a rectifying unit for converting the alternating current energy signal into a direct current signal. The wireless data transmitting device further comprises a data transmitting unit configured to receive the direct current signal and to generate an aircraft related wireless data signal and a second antenna unit configured to output the aircraft related wireless data signal. Further, a system for wireless data transmission, an aircraft, and a method for wireless data transmission are presented.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 5, 2020
    Assignee: AIRBUS OPERATIONS GMBH
    Inventor: Ulrich Rittner
  • Patent number: 10627431
    Abstract: The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, an energy harvesting power supply, and a communication device. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil and the power supply coil are positioned adjacent to, but spaced apart from, the bus bar.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: April 21, 2020
    Assignee: Southern States, LLC
    Inventors: Josh Keister, Joseph R Rostron, Jiyuan Fan, Tan Tran
  • Patent number: 10620238
    Abstract: Improved devices, apparatuses, systems, and methods involving the use of field probes with voltage-controlled variable impedance elements and surface-launched acoustic wave devices, including surface acoustic wave (SAW) devices and SAW sensor-tag wireless interface devices to measure voltage and current in current carrying conductors (CCCs) via measurement of the electric fields and magnetic fields around said CCCs are disclosed. The devices, apparatuses, systems, and methods taught in the present invention include a remotely powered line-mounted measurement unit that requires no connection to electrical ground for operation, and that has no internal energy source, no energy harvesting or power conditioning circuitry, no discrete energy storage components, and no radio.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: April 14, 2020
    Assignee: SENSANNA INCORPORATED
    Inventors: Jacqueline H. Hines, Andrew T. Hines, Doug Kirkpatrick
  • Patent number: 10585125
    Abstract: Devices, systems and methods for coupling sensors to intelligent electronic devices (IED's), e.g., an electrical power meter, via various communication media are provided. The present disclosure provides a mechanism for coupling an IED to another desired device, e.g., a current sensor, using modular connectors (e.g., a RJ-45 connector) and fiber-optic cables. The present disclosure also provides for coupling devices using modular connectors via wired or wireless connectivity.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 10, 2020
    Assignee: ELECTRO INDUSTRIES/ GAUGETECH
    Inventor: Tibor Banhegyesi
  • Patent number: 10571492
    Abstract: The present disclosure provides a current sensor including: a shunt resistor provided between a first bus bar and a second bus bar, and a fastener coupled through the first bus bar, the second bus bar, and the shunt resistor. The first bus bar has a first through-hole, the second bus bar has a second through-hole, and the shunt resistor has a third through-hole. The first through-hole, the second through-hole, and the third through-hole are aligned with one another to allow the fastener to pass through the first to third through-holes.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 25, 2020
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Jae Hoon Yoon, Chang Han Jun
  • Patent number: 10551440
    Abstract: A remote blade closing detector switch is positioned on or near the jaws of an electric power disconnect switch, where proper seating of the blade in the jaws activates a detector switch. An extended conductor lead electrically connects the detector switch an RFID tag placed in a convenient reading location. The detector switch is configured to control a data signal, power to the antenna of the RFID tag, the power supply to the RFID tag, or a data signal between an RFID chip and an antenna as mechanisms for enabling and disabling the tag to report a status indicator. An antenna tuning compensator may be utilized to compensate for the impedance of the long conductor lead connected to the antenna. A noise filter may also be used to suppress electrical noise picked up by the long conductor lead in the harsh electrical environment of the disconnect switch.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: February 4, 2020
    Assignee: Southern States, LLC
    Inventors: Joseph R Rostron, Josh Keister, Tan T Tran, Philip Carson Jones
  • Patent number: 10534026
    Abstract: Systems and methods that measure electrical parameters of a multi-phase electrical system may utilize a multi-phase measurement device that includes a sensor subsystem that has a voltage sensor and a current sensor. Each of the voltage sensor and the current sensor may be a contact-type sensor or a “non-contact” sensor that does not require galvanic contact. In operation, a multi-phase measurement device may utilize the voltage sensor and the current sensor to sequentially obtain single phase measurements for each phase of a multi-phase electrical system. The measurements may be synchronized to obtain various multi-phase power parameters, such as various parameters relating to power, phase, voltage, current, etc. The multi-phase measurement device may be operative to automatically detect when an operator has positioned a sensor of the sensor subsystem proximate a conductor under test so the multi-phase measurement device can initiate detection of one or more electrical parameters in the conductor.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: January 14, 2020
    Assignee: FLUKE CORPORATION
    Inventors: Ronald Steuer, Peter Radda
  • Patent number: 10534020
    Abstract: The invention relates to a coupling for electrically and mechanically connecting medium-voltage or high-voltage components, in particular for voltages of 1 kV to 52 kV, comprising a first connecting piece for mechanically and electrically connecting a medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of a bushing of a switchgear cabinet, and a second connecting piece for mechanically and electrically connecting another medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of an electrical cable, wherein the two connecting pieces of the coupling belong to complementary connection types, which fit together mechanically, and comprising a low-resistance current sensing resistor, which is built into the coupling and electrically connected between the first connecting piece and the second connecting piece in order to measure a current flow between the first connecting piece and the second connecting piece.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: January 14, 2020
    Assignee: ISABELLENHÜTTE HEUSLER GMBH & CO. KG
    Inventors: Ullrich Hetzler, Jan Marien, Alexander Wassmann, Eckhard Wendt
  • Patent number: 10532382
    Abstract: A method and a device for cleaning an electric cable and/or an electric insulator connected to the electric cable. The device includes a power supply module operative to extract electric power from magnetic field surrounding an electric cable, a propulsion module for maneuvering the device at least one of along the electric cable and around the cable, and a dusting module for cleaning the electric cable, where the device is mounted on a single electric cable of an electric transmission grid and/or an electric distribution grid.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: January 14, 2020
    Assignee: ELECTRICAL GRID MONITORING LTD.
    Inventors: Eyal Miron, Nimrod Sandlerman
  • Patent number: 10527652
    Abstract: An accessory device for low or medium voltage electric applications includes a casing and electronic means including one or more current sensors for detecting current flowing in an electric cable. The top shell of the casing includes an external recess having a cable seat for accommodating the electric cable in a transversal position with respect to the casing. The cable seat has a cable coupling surface adapted to mechanically couple with the electrical cable. The accessory device includes a holder element mechanically coupleable with the top shell in the external recess. The holder element includes one or more holding surfaces. Each of the holding surfaces is overlapped and mechanically coupled with the electric cable, when the holder element is positioned in the external recess in a corresponding accommodating position that is selectable depending on the size of the electric cable.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 7, 2020
    Assignee: ABB Schweiz AG
    Inventors: Stefano Magoni, Giorgio Magno, Massimo Scarpellini
  • Patent number: 10527653
    Abstract: A method includes measuring an impedance of a shunt as a function of frequency and converting the impedance to an admittance in a time domain. The method further includes connecting the shunt in a circuit and measuring voltage data across the shunt over a predetermined interval. The method includes outputting a signal indicative of a current through the shunt derived from the voltage data convolved with the admittance. The method may be implemented in a controller configured to interface with the shunt.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 7, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Richard William Kautz, Xi Lu, Zhuxian Xu, Guangyin Lei, Chingchi Chen, Lan Yu, Michael W. Degner
  • Patent number: 10520539
    Abstract: A system for detecting and indicating partial discharges and voltage. The system allows capturing signals from the electric power system and/or the electrical equipment thereof, and detecting and indicating the presence or absence of partial discharges and voltage, which allows carrying out a quick and simple inspection in order to prevent faults in the distribution elements, preventing risks and performing suitable installation maintenance.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: December 31, 2019
    Assignee: Ormazabal Protection & Automation, S.L.U.
    Inventors: Juan Antonio Sanchez Ruiz, Jagoba Perez Martinez, Jose Maria Rua Sanchez, Ian Gilbert, Aritz Hurtado Vicuña, Patrick Mulroy
  • Patent number: 10514424
    Abstract: Disclosed is a system for charge-discharge cycler, particularly to a system for charge-discharge cycler in which a structure of a shunt is improved to improve performance/accuracy of a current control as a key component of an instrument for testing a secondary battery charge-discharge. A system for charge-discharge cycler has the effect of improving the degree of precision/performance of the current control during a charge/discharge inspection of the secondary battery, thereby raising the standard of development/aspect of the secondary battery and developing a charge/discharge performance tester of high performance.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: December 24, 2019
    Assignee: YUYANG DNU CO., LTD.
    Inventors: Tae Hoon Lee, Byung Gil Yoo, Il Kyu Lee
  • Patent number: 10514435
    Abstract: The present invention relates to an apparatus for calibrating a power measuring system for power transformers. The general inventive concept involves the two reference measuring systems that are known from the prior art for the calibration of a current transformer, a voltage transformer and an evaluation device being integrated in a shared apparatus, according to the invention, for calibrating a power measuring system for power transformers, which apparatus is furthermore arranged on a container such that the apparatus can be moved by means of a trailer that holds the container for the purpose of in-situ calibration of the power measuring system of power transformers.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: December 24, 2019
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventors: Thomas Steiner, Catrina Kowal, Sebastian Augat, Andreas Thiede
  • Patent number: 10514396
    Abstract: Power distribution networks need to monitor the electrical power at points around the network. A unit which senses the electrical characteristics of the network can also sense other environmental characteristics of the electrical network at that location. An electrical sensor unit attachable to an insulated electrical distribution cable comprises at least one electrical sensor for at least one of current, voltage, and phase angle of electrical power being transmitted in the cable, a source of electrical power for driving the electrical sensors, and a socket for receiving an environmental sensor and comprising connections for the source of electrical power. The unit comprises an annular body defining an axial passage through which an electrical conductor can pass, the annular body housing an electrical sensor in the form of a current sensor including a loop extending around the axial passage.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: December 24, 2019
    Assignee: REPL International Limited
    Inventors: Rutton Homi Patel, Neville Kyme
  • Patent number: 10502634
    Abstract: A temperature sensing system including a head unit comprising a thermal sensor for acquiring thermal data from a surface, a wireless transmitter wirelessly transmitting the thermal data, and a mounting interface; and a non-conductive pole connected to the mounting interface of the head unit.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: December 10, 2019
    Assignee: Hastings Fiber Glass Products, Inc.
    Inventors: Kevin Lynn Baum, Lewis Allender Shaw
  • Patent number: 10495674
    Abstract: A monitoring device (10) includes a feature amount storage unit (11) that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation; a measured data acquisition unit (12) that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit; a feature amount extraction unit (13) that acquires a measurement feature amount which is the feature amount included in the measured data of the predetermined unit; a correction unit (15) that corrects a first feature amount which is the device feature amount or the measurement feature amount based on unit feature information indicating a feature of the predetermined unit; and a presumption unit (16) that presumes the electrical device being in operation using the corrected first feature amount, and a second feature amount which is the device feature amount or the measu
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: December 3, 2019
    Assignee: NEC Corporation
    Inventors: Eisuke Saneyoshi, Takahiro Toizumi, Kosuke Homma, Ryo Hashimoto, Katsuya Suzuki
  • Patent number: 10481186
    Abstract: The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, a voltage sensor, an energy harvesting power supply, and a communication device configured. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil, the power supply coil and the voltage sensor positioned adjacent to, but spaced apart from, the bus bar.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 19, 2019
    Assignee: Southern States, LLC
    Inventors: Josh Keister, Joseph R Rostron, Jiyuan Fan, Tan Tran
  • Patent number: 10466294
    Abstract: A sensor to monitor health of surge arresters such as metal oxide arresters is disclosed. The sensor includes a housing; a sensor assembly contained in the housing, the sensor assembly including an electronics board to receive, transmit, process, and store signals; and a voltage measurement strap extending around a periphery of the housing, the voltage measurement strap being electrically connected to the electronics board and configured to measure voltage using electric field.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 5, 2019
    Assignee: ELECTRIC POWER RESEARCH INSTITUTE, INC.
    Inventors: Andrew John Phillips, Christiaan Engelbrecht, Robert Carlton Lynch, J. Mark Major
  • Patent number: 10457164
    Abstract: A seat-occupancy and occupant-class detector for a vehicle seat having a back part and a seat part has an insulated but conductive surface element mounted on the seat part of the vehicle seat roughly parallel to a seat cushion thereof. A signal generator feeds an electrical measuring signal to the surface element, and first and second receiving electrodes are provided in the backrest at different spacings from the surface element but vertically level with each other such that the measuring signal of the surface element induces different voltages in the receiving electrodes. Calculation and evaluation steps performed in an evaluation unit take as their basis a value that is a quotient of different measurements for the same physical size and is therefore dimensionless. The reason for this is the arrangement of the two receiving electrodes at a different spacing from the conductive surface element on the seat cushion side.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 29, 2019
    Assignee: PARAGON GMBH & CO. KGaA
    Inventor: Ralf Moenkemueller
  • Patent number: 10451656
    Abstract: There is provided a ring-shaped magnetic core that forms a closed magnetic circuit that encloses a measured electrical path, a magneto-electric converter that detects magnetic flux inside the magnetic core and outputs an electrical signal with an amplitude in keeping with a quantity of the magnetic flux, a coil that is formed on the magnetic core and is supplied with a negative feedback current generated based on the electrical signal, and an internal shield member disposed at least in a vicinity of the magneto-electric converter and the coil. A first gap that increases a magnetoresistance of a closed magnetic circuit, which is a closed magnetic circuit for leakage flux that leaks from the magnetic core and includes the internal shield member, a part of the magnetic core where the coil is formed, and the magneto-electric converter, is formed in the internal shield member.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: October 22, 2019
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Osamu Yokota, Hidekazu Masuda
  • Patent number: 10416200
    Abstract: A current sensor includes a bus bar through which an electric current to be measured flows, a first magnetic sensing element including a first magneto-sensitive portion including a magneto-resistive element, and a second magnetic sensing element including a second magneto-sensitive portion including a magneto-resistive element. Strength of a magnetic field generated by the electric current sensed by the first magneto-sensitive portion is different from a strength of the magnetic field sensed by the second magneto-sensitive portion. A first bias magnetic field is applied to the first magneto-sensitive portion and a second bias magnetic field in a direction opposite to a direction of the first bias magnetic field is applied to the second magneto-sensitive portion.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: September 17, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Naoki Futakuchi, Ken Okuyama
  • Patent number: 10404186
    Abstract: A power module includes an input bus, a switching device, and an output bus. The input bus includes a first coating of a high permeability magnetic conductive material and is configured to receive input direct current (DC) electrical power from an electrical power source. The switching device is electrically coupled to the first input bus, and is configured to selectively connect and disconnect to facilitate converting the input DC electrical power into output alternating current (AC) electrical power. The output bus includes a second coating of the high permeability magnetic conductive material, and is electrically coupled to the first switching device. The output bus is configured to supply the output AC electrical power to an electrical load.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: September 3, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael Joseph Schutten, Fengfeng Tao, Maja Harfman-Todorovic, Ravisekhar Nadimpalli Raju, Philip Michael Cioffi, Ljubisa Dragoljub Stevanovic
  • Patent number: 10389264
    Abstract: A power converter for driving a three-phase AC motor with three phase conductors has: a first terminal for connecting a first of the three phase conductors of the three-phase AC motor, wherein a current which is to be output by way of the first terminal is routed to the first terminal by way of an electrical feed line, and a ground-fault and/or short-circuit identification circuit which is designed to detect a ground fault and/or short circuit of the first terminal. The ground-fault and/or short-circuit identification circuit has: a coil with a winding which is arranged adjacent to the electrical feed line, wherein the winding does not surround the electrical feed line, and an evaluation device which is designed to evaluate a voltage, which is induced in the winding, for ground-fault and/or short-circuit identification.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 20, 2019
    Assignee: Schmidhauser AG
    Inventor: Andreas Burgermeister