With Coupling Means (e.g., Attenuator, Shunt) Patents (Class 324/126)
  • 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: 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: 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: 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: 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: 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: 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
  • Patent number: 10378965
    Abstract: A system (100) for monitoring a temperature of an electrical conductor of an electrical cable and including a temperature sensor unit (100a) and a transceiver unit (100b). The temperature sensor unit (100a) is located inside the first (semi)conductive layer and includes a micro-controller (120), a temperature sensor (110), an energy harvest sub-unit (140) and a wireless transmitter layer (130). The temperature sensor (110) is adapted to detect a first signal (S1) representing temperature of the electrical conductor and to supply the first signal (S1) to the micro-controller (120). The transceiver unit (100b) is located outside the first (semi)conductive layer and includes an energy transmitter (160) and a wireless receiver (150). The energy harvest sub-unit (140) is adapted to harvest electromagnetic power from the energy transmitter (160) and to provide electrical power to the micro-controller (120).
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: August 13, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Zhiguo Wen, Zheng Huang, Sihua Yuan, Xuetao Yu, Ming Zhang
  • Patent number: 10375824
    Abstract: A multifunctional high current circuit board includes a high current-carrying current-conducting layer and a switching layer, which is connected to at least one heat source, wherein high current-carrying potentials are conducted into the switching layer.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 6, 2019
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Michael Sperber, Wilfried Lassmann, Dirk Schramm
  • Patent number: 10345363
    Abstract: The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in an electric power delivery system, the CCVT comprising a first capacitor disposed between an electrical bus and a first electrical node, and a second capacitor electrically disposed between the first electrical node and a ground connection. A resistive divider in electrical communication with a first node may generate a resistive divider electrical signal corresponding to a voltage value. An intelligent electronic device (IED) in electrical communication with the resistive divider monitors a resistive divider voltage signal. The IED detects a traveling wave based on the resistive divider voltage signal and a measurement of a primary current through an electrical bus in electrical communication with the CCVT; and analyzes the traveling wave to detect a fault on the electric power delivery system.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: July 9, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Edmund O. Schweitzer, III, Veselin Skendzic
  • Patent number: 10330708
    Abstract: A current detection device includes plural bus bars, plural magnetic detection elements that are arranged respectively corresponding to the bus bars, a magnetic shield arranged to surround parts of the bus bars and the magnetic detection elements, a correction factor calculation unit that, on the basis of voltages output from the magnetic detection elements when any two or more of the bus bars are supplied with inversely phased currents, calculates correction factors for correcting mutual interference between the magnetic detection elements, a recording medium that holds the correction factors calculated by the correction factor calculation unit, and a current calculation unit that, using the correction factors held in the recording medium, calculates the currents flowing through the bus bars on the basis of the voltages output from the magnetic detection elements.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 25, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Naoki Futakuchi, Katsuya Akimoto
  • Patent number: 10320184
    Abstract: A method and apparatus for earth fault in power high and/or medium voltage system may enhance a protection system for special technical task, which is to measure residual current, the invention is, that for earth fault protection in power system or a part of power system, for example, but not limited to, cable connectors, wherein residual current is determined indirectly by the calculation from the phase current values, obtained from the output signals of Rogowski-coil based current sensors.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: June 11, 2019
    Assignee: ABB SCHWEIZ AG
    Inventors: Emil Kalina, Vaclav Prokop
  • Patent number: 10317439
    Abstract: Current sensors, systems and methods are provided. A test current is injected via a pair of force terminals into a conductor and a pair of sense terminals are configured to provide an input signal that corresponds to a voltage drop across the conductor. Based on the test current in the conductor and based on the input signal, a contribution to the voltage drop due to the test current and a contribution to the voltage drop due to a primary current through the conductor may be determined. In addition, at least one of a reference resistance of the conductor and the primary current in the conductor may be further determined.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: June 11, 2019
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10274522
    Abstract: A coil that includes a coupled mobile device.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: April 30, 2019
    Assignee: Veris Industries, LLC
    Inventor: Martin Cook
  • Patent number: 10267838
    Abstract: A current sensor for use with a charged device model (CDM) tester includes an outer conductor and a cylindrical inner conductor. The inner conductor is positioned within a central cylindrical bore of the outer conductor to provide a characteristic transmission line impedance of approximately 50 ohms. A test probe conductor extends from the distal end of the inner conductor and is electrically connected to the inner conductor. An array of self-supporting ceramic chip resistors is radially positioned between the distal ends of the inner conductor and the outer conductor to provide a uniformly distributed resistance between the inner conductor and the outer conductor. When the test probe conductor is applied to a pin of a charged device under test (DUT), a discharge current passes through the resistors and produces a voltage on the inner conductor that is provided as a signal voltage proportional to the discharge current.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: April 23, 2019
    Inventors: Jon E. Barth, John R. Richner
  • Patent number: 10234516
    Abstract: In one aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall-type elements in parallel and connected to the chopper stabilized amplifier. In another aspect, a magnetic field sensor includes a chopper stabilized amplifier and a plurality of Hall quad elements in parallel and connected to the chopper stabilized amplifier. In a further aspect, a current sensor has a bandwidth of 1 MHz and includes a chopper stabilized amplifier and a plurality of Hall quad elements, fabricated in silicon, in parallel and connected to the chopper stabilized amplifier.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: March 19, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: David J. Haas, Michael Gaboury, Alexander Latham
  • Patent number: 10215779
    Abstract: There is provided a non-contact voltage measurement device which can precisely measure a measurement target voltage by suppressing a flow of a leakage current via a parasitic capacitance produced between an electric field shield and an electric circuit. A drive voltage applying unit applies a voltage generated from an output voltage of a low impedance unit of the electric circuit and equal to an input voltage of a high impedance unit, to a first electric field shield coated on the high impedance unit.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 26, 2019
    Assignee: OMRON Corporation
    Inventors: Hiroshi Imai, Keiki Matsuura, Hiroyuki Tokusaki, Mao Ogimoto
  • Patent number: 10215778
    Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: February 26, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Mark Gravermann, Sebastian Eggert, Michael Petry, Werner Roehling, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Michael H. Stalder, Jens Weichold, Rainer Reeken, Andreea Sabo, Christian Weinmann, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
  • Patent number: 10209288
    Abstract: A monitoring system has a polyphase distribution transformer monitoring (PDTM) device that interfaces with electrical conductors electrically connected to a transformer. The PDTM device measures a current and a voltage in each of the electrical conductors simultaneously. Further, the PDTM device has a plurality of free-moving satellite current sensors coupled to flexible cables, and each current sensor is undetached from the other current sensors. Additionally, each satellite current sensor is electrically coupled via a current cable to at least one connector on a control box for which to deliver data indicative of current sensed by the current sensors and each current cable is paired with one of a plurality of voltage cables, and each current cable and voltage cable pair is coupled to the at least one connector.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: February 19, 2019
    Assignee: Grid20/20, Inc.
    Inventor: Randall Turner
  • Patent number: 10189369
    Abstract: A method and a system for controlling motors is provided to have a vehicle travel smoothly in such a manner that, when a state of charge of a battery for supplying electric power stored to a plurality of motors included in the vehicle is low, a consumption of the battery is reduced by decreasing the electric power supplied to each motor of the plurality of motors. The method of controlling motors includes: determining a state of charge of a battery storing electric power supplied to each motor of a plurality of motors; calculating a present current consumption of each motor of the plurality of motors when the state of charge of the battery is equal to or less than a predetermined reference value; and resetting a power supply to each motor of the plurality of motors, based on the present current consumption of each motor of the plurality of motors.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: January 29, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Mun Soon Kwon
  • Patent number: 10186354
    Abstract: A mounting structure includes a PCB on which first and second conductive patterns are formed, and a shunt resistor mounted on one surface of a substrate via a conductive bonding material. Each of the first and second conductive patterns includes: a first/second lead-out portion and a first/second pull-out portion which is pulled out to the outside of a region of the shunt resistor from the first/second lead-out portion. A resistance value of the shunt resistor is detected between the first pull-out portion and the second pull-out portion. A bonding material flow-out preventing resist is disposed at a portion of a surface of at least one of the first lead-out portion and the second lead-out portion, and a fillet of the bonding material terminates at a position corresponding to a position where the bonding material flow-out preventing resist is disposed.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 22, 2019
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventor: Yohei Shinotake
  • Patent number: 10175273
    Abstract: A high-voltage power transmission system is used as an extremely large antenna to extract spatiotemporal space, physical, and geological information from geomagnetically induced currents (GIC). A differential magnetometer method is used to measure GIC and involves acquiring line measurements from a first fluxgate magnetometer under a high-voltage transmission line, acquiring natural field measurements from a reference magnetometer nearby but not under the transmission line, subtracting the natural field measurements from the line measurements, and determining the GIC-related Biot-Savart field from the difference. NASA warning and alarm systems can be triggered based on determinations of GIC amplitude levels that exceed a set threshold value.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 8, 2019
    Assignee: The United States of America as represented by the Administrator of NASA
    Inventors: Antti A. Pulkkinen, Todd M. Bonalsky, Troy Ames, Carl F. Hostetter
  • Patent number: 10163553
    Abstract: Provided is a resistor including a first electrode, a second electrode, and a resistive element disposed between the first and second electrodes. Each of the first and second electrodes includes a main electrode portion and a narrow electrode portion with a narrower width than that of the main electrode portion. The resistive element is disposed between the two narrow electrode portions.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 25, 2018
    Assignee: KOA CORPORATION
    Inventors: Kenji Kameko, Kosuke Arai, Tadahiko Yoshioka
  • Patent number: 10161968
    Abstract: To provide a shunt resistor and a current detection device including the shunt resistor, to which a busbar, a board, and the like can be easily fixed with sufficient strength wherein only minimum processing of electrodes is required. Screwing members (bolt (14) and nut (15)) that are separate members from electrodes (12) of the resistor (10), are fixed on the electrodes (12). The current detection device includes the shunt resistor (10), which has at least a pair of electrodes (12). One screwing member (14) fixed beforehand on at least one electrode (12) is screw fastened with the other screwing member (15) while disposing a prescribed intervening member (20) between the one screwing member and the other screwing member. Here, the prescribed intervening member (20) includes a board mounting a current detection circuit thereon and/or busbars.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: December 25, 2018
    Assignee: KOA CORPORATION
    Inventors: Keishi Nakamura, Kenji Kameko
  • Patent number: 10161907
    Abstract: A method and a device for evaluating the distribution and orientation of ferromagnetic, electrically conductive fibers in a composite material are disclosed. The principle consists in repeatable evaluation of the density of ferromagnetic, electrically conductive fibers at the measured location, and such evaluation is performed within a guaranteed scatter range of the measured data and at a guaranteed accuracy rate. A device to perform the method comprises a C, U or E-shaped ferromagnetic core (1) with distributed or uniform winding of the electric coil (2), where the ferromagnetic core (1) exhibits dimensions A, B, and C, for which we have C?3B and B?A, where A denotes the width of an arm (1.2), B represents the depth of an arm (1.2), and C is the length of the base (1.1).
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: December 25, 2018
    Assignee: VYSOKE UCENI TECHNICKE V BRNE
    Inventors: Pavel Fiala, Martin J. Friedl, Leonard Hobst, Tereza Komarkova
  • Patent number: 10135238
    Abstract: A monitoring circuit includes a configuration interface, a control circuit, a detection circuit, a direct current voltage source, a switch circuit, and a first resistor. A first end of the configuration interface is separately connected to the direct current voltage source and an input end of the switch circuit; a second end of the configuration interface is separately connected to a first end of the first resistor and an output end of the switch circuit; a control end of the switch circuit is connected to the control circuit; a second end of the first resistor is grounded; the detection circuit is connected to the first end of the first resistor; the configuration interface is configured to connect to a dry contact; the control circuit controls closing or opening of the switch circuit; and the detection circuit detects a voltage between two ends of the first resistor.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: November 20, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Donghai Ma, Zhiwei Leng
  • Patent number: 10126334
    Abstract: Configurations are provided for measuring electrical current flow through an AC power cable to a host device. An enclosure is provided that includes various components, such as components of an active RFID tag. A cable clamp is provided that is configured to attach the enclosure to the AC power cable. The cable clamp includes magnetic sensors that are responsive to electrical current flowing through the AC cable to generate signals indicative of the current flowing through the AC cable.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: November 13, 2018
    Assignee: Emanate Wireless, Inc.
    Inventor: Gary L. Sugar