Coil Surrounding Linear Conductor Patents (Class 336/174)
  • Patent number: 11175351
    Abstract: Optical sensing methods and systems for power applications, and the construction thereof, are described herein. An example method of constructing a winding assembly includes mounting a sensing component to a coil former, and winding a coil onto the coil former so that the sensing component is positioned within the coil. A system and method for detecting operating conditions within a transformer using the described winding assemblies are described.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: November 16, 2021
    Assignee: Hyperion Sensors Inc.
    Inventors: Gerald Manuelpillai, Ilya Tchaplia, Anselm Viswasam, Guang Zeng
  • Patent number: 11139104
    Abstract: An inductor component includes a core including a substantially column-shaped shaft and a support formed on an end portion of the shaft and a terminal electrode formed on the support. The terminal electrode includes an underlying layer on a surface of the support. A maximum thickness of the underlying layer on an end face of the support is greater than a maximum thickness of the underlying layer on a bottom face of the support.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: October 5, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akira Tanaka
  • Patent number: 11090464
    Abstract: In one exemplary embodiment, an endovascular device may include a hollow shaft having a proximal end and a distal end, and sized for insertion into a blood vessel. The endovascular device may also include a control line having a proximal end and a distal end, and extending through the hollow shaft. The endovascular device may also include an actuatable working element located proximate the distal end of the hollow shaft, and configured to receive an actuation force transmitted via the distal end of the control line. The endovascular device may further include an actuator configured to exert the actuation force on the proximal end of the control line, to thereby cause relative movement between the control line and the hollow shaft and to actuate the working element. The hollow shaft may also include a cable formed of a plurality of wound wires and including a proximal segment, at least one transition segment, and a distal segment.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: August 17, 2021
    Assignee: Rapid Medical Ltd.
    Inventors: Yuri Sudin, Ronen Eckhouse, Aharon Friedman, Matan Gedulter, Moshe Miller
  • Patent number: 11037723
    Abstract: A transformer includes a magnetic core, a first winding and at least one second winding. The magnetic core has a window through which the first winding passes through without contacting the magnetic core. The second winding passes through the window of the magnetic core and is wound on the magnetic core. The second winding has a distance from the first winding, and a semi-conductive part is disposed between the second winding and the magnetic core. The present disclosure can effectively lower the risk of partial discharge between the second winding and the magnetic core, and thus the transformer of the present disclosure has high reliability.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 15, 2021
    Assignee: Delta Electronics, Inc.
    Inventors: Jianxing Dong, Jianping Ying, Teng Liu
  • Patent number: 10932332
    Abstract: A system to provide induction heating includes a welding-type power supply to apply an electric current, a first electromagnetic array formed on a first substrate and a second electromagnetic array formed on a second substrate. Each array includes a plurality of conductors arranged in a varying configuration such that, upon application of the electric current, each conductor of the plurality of conductors generates a magnetic field in a polarity that is other than a polarity of a corresponding magnetic field of at least one adjacent conductor. A first surface and a second surface opposite the first surface, the first surface having a strong magnetic field relative to a weak magnetic field associated with the second surface in response to the electric current.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: February 23, 2021
    Assignee: Illinois Tool Works Inc.
    Inventor: Michael Hoeger
  • Patent number: 10908187
    Abstract: A current sensor includes a current sense coil disposed about a conductive lead, the current sense coil configured to sense a current passing through the conductive lead. The current sense coil includes: a first outer coil configured to detect a first magnetic field generated by the current; a second outer coil configured to detect the first magnetic field, the second outer coil further configured to cancel an electrical field induced in the first outer coil; and an inner conductor disposed between the first outer coil and the second outer coil, the inner conductor configured to detect a second magnetic field generated by the current.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: February 2, 2021
    Assignee: Covidien LP
    Inventor: Robert B. Smith
  • Patent number: 10859605
    Abstract: The present disclosure provides an improved Rogowski-type current sensor. The current measurement coil, and the compensation coil are provided on the same board. The measurement coil and the compensation coil are arranged such that they at least partially overlap by virtue of each repeatedly changing side of the board. This arrangement makes the current sensor far better at rejecting interference than certain other PCB Rogowski type coil arrangements.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: December 8, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventor: Jonathan Ephraim David Hurwitz
  • Patent number: 10770219
    Abstract: Disclosed herein is a coil component that includes a drum core having a winding core part and first and second flange parts provided on both sides of the winding core part; a wire wound around the winding core part; a plurality of terminal electrodes connected with end portions of the wire, each of the terminal electrodes being provided on an associated one of the first and second flange parts; and a top plate fixed to the first and second flange parts. The top plate includes a magnetic layer comprising magnetic powder and binder resin, and a resin layer having a smaller content of the magnetic powder than that of the magnetic layer. The resin layer is positioned between the first and second flange parts and the magnetic layer.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: September 8, 2020
    Assignee: TDK CORPORATION
    Inventors: Yoshihiro Kawasaki, Kouyu Ohi, Hirohumi Asou, Syun Ashizawa
  • Patent number: 10739384
    Abstract: Disclosed is a PCB Rogowski coil, comprising two groups of first coils and second coils which are connected in series and have opposite winding directions, wherein the first coil and the second coil respectively contain a plurality of wire turns. One wire turn of the first coil comprises an inlet wire, a winding wire and an outlet wire. The winding wires of each wire turn of the first coil are arranged in radially parallel with each other. The winding wires are respectively arranged on both the upper surface and the lower surface of a PCB board, with the inlet wire passes through a via hole on the PCB board and is connected to the winding wire. The interference of an external magnetic field is therefore markedly eliminated, and the anti-external interference capability of a Rogowski coil is improved.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: August 11, 2020
    Assignee: BEIJING INHAND NETWORKS TECHNOLOGY CO., LTD.
    Inventors: Xianwu Tang, Jianliang Zhang
  • Patent number: 10429416
    Abstract: A power switching device is provided with an integrated current sensor. The device includes component housing and multiple terminal legs extending therefrom. A current sensor assembly includes an interior cavity having a galvanically insulating tubular sleeve extending therethrough. A toroidal inductive winding resides within the first cavity and is circumferentially disposed about the sleeve, with one leg of the device defining a (single-turn) primary winding and the winding defining a secondary winding magnetically coupled to the device leg. Current sensing terminals are associated with respective locations along the inductive winding, wherein a current through the encapsulated terminal leg is detectable via respective current sensing leads extending from the assembly housing. A damping inductive element such as a ferrite bead may be provided within a second interior cavity defined by the assembly housing to suppress high frequency oscillations associated with a second (e.g.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 1, 2019
    Assignee: Bel Power Solutions Inc.
    Inventors: Jun Li, Ye Chen, Gordon Zongbo Hu, Mark A. Jutras
  • Patent number: 10199152
    Abstract: An inductor can include a first substrate, a magnetic piece, and a conductor. The first substrate can be formed within a second substrate. The magnetic piece can be connected to a first side of the first substrate. The conductor can be formed within the second substrate, on the second substrate, or both. The conductor can have an input and an output. The conductor can be configured to surround the first substrate without being in contact with the first substrate and without being in contact with the magnetic piece.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: February 5, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Mete Erturk, Ravindra Vaman Shenoy, Kwan-yu Lai, Jitae Kim, Donald William Kidwell, Jr., Jon Bradley Lasiter, James Thomas Doyle, Omar James Bchir
  • Patent number: 10192668
    Abstract: In the coil component, for dimensions measured along a predetermined direction of a winding core portion, a dimension of each of top surfaces of first and second flange portions is equal to or larger than a dimension of the winding core portion.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: January 29, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akio Igarashi
  • Patent number: 10192675
    Abstract: A pulse transformer includes a drum core having a winding core, two flanges on end portions of the winding core and each having a notch formed in the upper portion, two terminal electrodes and a center tap disposed on one of the flanges, two further terminal electrodes and another center tap disposed on the other flange, a coil includes four wires wound around the winding core of the drum core and connected to the terminal electrodes and the center taps, two of the wires are wound in one direction, and the other wires are wound in another direction, two of the wires cross each other at the inner surface of one of the flanges, and the other wires cross each other at the inner surface of the other flange.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: January 29, 2019
    Assignee: Tai-Tech Advanced Electronics Co., Ltd.
    Inventors: Ming Yen Hsieh, Hsiang Chung Yang
  • Patent number: 10028385
    Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: July 17, 2018
    Assignee: Ferric, Inc.
    Inventor: Noah Andrew Sturcken
  • Patent number: 9817139
    Abstract: An underwater observation apparatus includes an observation apparatus body, a weight structure, a coupling device, and a fusion cutting device. The observation apparatus body is configured to house at least a power source, a communication circuit for a communication device, and a signal processing device. The coupling device couples the observation apparatus body with the weight structure via a remote-controlled release structure capable of releasing the observation apparatus body from the weight structure. The underwater observation apparatus also includes a power feeding coil located inside of a glass sphere to generate magnetic flux, and a power receiving coil located outside of the glass sphere. The power receiving coil generates an induced voltage when interlinked by the magnetic flux generated by the power feeding coil. The power receiving coil is configured to supply drive power to the fusion cutting device.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: November 14, 2017
    Assignees: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, NIPPON MARINE ENTERPRISES, LTD.
    Inventors: Satoshi Shimizu, Takuya Maekawa, Yoshitaka Watanabe, Kiyoshi Hatakeyama
  • Patent number: 9684017
    Abstract: A current measurement device for measuring a current through a primary conductor is provided. The current measurement device comprises a current transducer of the Rogowski type, the current transducer comprising a conductor winding connected to a pair of transducer terminals and adapted to induce there between a measurement voltage indicative of a current through the primary conductor; a pair of calibration terminals adapted for providing a calibration current to a calibration current path conforming to the primary conductor, so that the calibration current induces a calibration response voltage component between the pair of transducer terminals; and a control circuit.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 20, 2017
    Assignee: ABB Research Ltd.
    Inventors: Joris Pascal, Jean-Baptiste Kammerer, Simon Paulus
  • Patent number: 9613742
    Abstract: To restrict a phenomenon that the direct-current resistance value after firing is larger than the direct-current resistance value before firing in an electronic component in which a conductor formed of a wire rod is embedded in a ceramic sintered compact. An electronic component 10 includes a ceramic sintered compact 12 and an inner conductor 30. The inner conductor 30 configures a circuit element, and is formed of a wire rod having nickel added thereto and containing copper as a major constituent.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 4, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Wataru Kanami
  • Patent number: 9472337
    Abstract: An electrostatic shield for controlling the electrostatic field between a high voltage conductor and a low voltage conductor in an instrument transformer is provided. The instrument transformer has a current transformer and a voltage transformer. The current transformer has a split core which includes a first core segment and a second core segment. When the first core segment adjoins the second core segment, a current transformer is formed, having a core formed from the first and second core segments. The high voltage conductor runs between the first and second core segments of the current transformer. The first core segment is encapsulated in a polymer resin and when encapsulated, forms a first encasement. The second core segment has a low voltage winding mounted thereon. The electrostatic shield is disposed between the low voltage winding and the high voltage conductor. A second encasement is formed by encapsulating the electrostatic shield, low voltage winding and second core segment in a polymer resin.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: October 18, 2016
    Assignee: ABB Schweiz AG
    Inventors: Steven A. Shaw, Jashbhai S. Patel
  • Patent number: 9165700
    Abstract: A polyphase, compressed-gas-insulated cable entry module includes an encapsulation. A plurality of phase conductors, which are electrically insulated from one another by compressed-gas insulation, are disposed in the interior of the encapsulation. The phase conductors are each electrically conductively contacted by cable connection bushes. The cable connection bushes are inserted into separate tubular connection pieces of the encapsulation. The tubular connection pieces lead into a common feeder housing of the encapsulation.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: October 20, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jüergen Schöps, Erhard Sonnenberg
  • Patent number: 9000875
    Abstract: An apparatus is provided for securing to and collecting power from an electrical conductor including a wire clamp that clamps to and secures the apparatus to the electrical conductor, a current transformer (“CT”) that clamps to the electrical conductor and collects power from the electrical conductor, and a housing including a cavity that encloses circuitry associated with the apparatus. According to various aspects, the circuitry may include one or more sensors and wireless communications circuitry, and the CT may include a core and an electrical winding that receives an induced current from magnetic flux generated according to alternating current present on the electrical conductor.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: April 7, 2015
    Assignee: Cooper Technologies Company
    Inventors: Bruce W. McBee, Gregg James Haensgen, John Fredrick Banting, William J. Kostolni, Bryan C. Cochran
  • Patent number: 8994370
    Abstract: The invention relates to an integrated sensor, including terminals (1, 2) for connection to an electric generator, said terminals being connected to a metal measuring line (4, 5) in which a current proportional to the voltage or current of the generator to be measured flows, and magnetoresistors (31, 32, 33, 34). The metal measuring line includes elongate and parallel sections (4, 5) in which the current flows in opposite directions, said sections being connected to a portion (3) for closing the metal measuring line (3, 4, 5), which is arranged on a galvanic isolation layer (8) that is in turn arranged on an integrated circuit portion including the magnetoresistors (31, 32, 33, 34), each of which have a sensitive portion that is vertically adjacent to one of the elongate sections (4, 5). The sensor can be integrated into a diagnostic system.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: March 31, 2015
    Assignees: Peugeot Citroën Automobiles SA, Commissariat a l'energie Atomique et aux Energies Alternatives
    Inventors: Myriam Pannetier-Lecoeur, Claude Fermon, Alain Giraud, Francis Roy
  • Patent number: 8957753
    Abstract: Exemplary embodiments are directed to a current transformer having a toroidal magnetic core around which an even number of shielding coils is wound. The shielding coils are operatively associated two by two to form corresponding couples. The shielding coils of each couple are wound on parts of the toroidal magnetic core opposite to each other and are connected in parallel to each other for obtaining a magnetic flux in them. The magnetic flux in a first shielding coil of a couple of shielding coils has an opposite direction with respect to a magnetic flux in a second shielding coil of the couple. The couples of shielding coils are connected in series.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: February 17, 2015
    Assignee: ABB Technology AG
    Inventors: Martin Odehnal, Roman Pernica, Pavel Vano
  • Patent number: 8896305
    Abstract: A permanent or variable magnetic field circulation sensor including apparatus for magnetic excitation further including at least one elongated excitation coil extending around an elongated supple magnetic core and including a supple magnetic material with low relative magnetic permeability having a supple or flexible matrix in which magnetic particles are dispersed, an excitation current generation unit coupled to the excitation coil to generate an excitation magnetic field in the core over substantially the entire length of the coil, apparatus for measurement including: at least one magnetic measuring transducer magnetically coupled to the apparatus for magnetic excitation, a measuring unit connected to the magnetic measuring transducer and suitable for providing a measurement of magnetic field circulation in the core.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: November 25, 2014
    Assignee: Neelogy
    Inventors: Lionel Cima, Yohan Maniouloux
  • Patent number: 8786393
    Abstract: A system and method for manufacturing of a micro-transformer providing direct electrical isolation between a primary winding and a secondary winding while featuring tight magnetic coupling for a large possible step-up or step-down ratio. The micro-transformer may be implemented in an integrated circuit, and may include a magnetic core. A high stepping ratio, e.g. approximately 50 to 100, may be achieved by connecting multiple symmetric primary windings in parallel and multiple symmetric secondary windings in series, or vice-versa. A plurality of windings may be stacked vertically. The micro-transformer may be of particular utility in wireless sensor networks, thermal and vibrational energy harvesters, power converters, and signal isolators.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: July 22, 2014
    Assignee: Analog Devices, Inc.
    Inventor: Baoxing Chen
  • Patent number: 8760254
    Abstract: An apparatus is provided for securing to and collecting power from an electrical conductor including a wire clamp that clamps and secures to an electrical conductor, a current transformer (“CT”) that clamps to the electrical conductor and collects power from the electrical conductor, and a housing that supports the wire clamp and the current transformer. According to various aspects, the apparatus may include a wire clamp including a compression post and clamp arms that surround and compress an electrical conductor in a closed position of the wire clamp, where each of the clamp arms includes pivot posts, and the clamp arms pivot between closed and open positions. According to other various aspects, the apparatus may include a split magnetic core that surrounds an electrical conductor in a closed position of the current transformer, where the split magnetic core includes pivot posts, and the split magnetic core pivots between closed and open positions.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: June 24, 2014
    Assignee: Cooper Technologies Company
    Inventors: Bruce W. McBee, Gregg James Haensgen, John Fredrick Banting, William J. Kostolni, Bryan C. Cochran
  • Publication number: 20140167733
    Abstract: In accordance with one aspect of the present disclosure, a current sensor configured to measure an AC current of a first conductor includes an outer coil having a first portion and a second portion. Each of the first and second portions are disposed about the first conductor passing through a center of the outer coil. The current sensor further includes an inner conductor disposed within the first and second portions of the outer coil and connected to each of the first and second portions of the outer coil.
    Type: Application
    Filed: November 1, 2013
    Publication date: June 19, 2014
    Applicant: COVIDIEN LP
    Inventors: DEAN C. BUCK, JAMES A. GILBERT
  • Publication number: 20140125441
    Abstract: Disclosed is a large-current transformer for an electronic round power meter, including a current sampling coil (2) and a current stick (1), where the current stick is a slotted stick, a middle section of the slotted stick is sleeved with the current sampling coil, inner slots at two ends of the slotted stick are inlaid with a first current insert (8) and a second current insert (10) respectively. The current transformer is easy to mount, has a reliable connection, a low temperature increase, high precision, and a low cost. A method of making the large-current transformer for an electronic round power meter includes: stamping a copper sheet into a flat current connector and a U-shaped current stick; where the U-shaped current stick passes through an inner hole of the current sampling coil, the flat current connector is inserted into inner slots at two ends of the U-shaped current stick, and the flat current connector is riveted firmly with the U-shaped current stick by means of riveting or spot welding.
    Type: Application
    Filed: April 13, 2012
    Publication date: May 8, 2014
    Applicant: An Hui Qian En Intelligent Technology Company Limited
    Inventors: Yin Hongping, Qian Jinhua, Yang Yuzhu
  • Publication number: 20140028287
    Abstract: A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals.
    Type: Application
    Filed: January 13, 2012
    Publication date: January 30, 2014
    Inventor: Matthew Brookes
  • Publication number: 20140009253
    Abstract: An improved current transformer has a ring shaped core and a plurality of windings wound around the ring shaped core. The ring shaped core has a rectangular cross sectional area configured to provide a current transformer current rating of at least 375 amperes.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 9, 2014
    Inventors: Jonathan C. Dell, Henry R. Vanderzyden, Jeffrey D. Baldwin, Kevin K. Wege
  • Publication number: 20130120094
    Abstract: A current transformer comprises a plurality of primary conductors (L,N) passing through a ferromagnetic core (10) and a secondary winding (W1) wound on the core. The transformer further including a ferromagnetic member (T1) continuously surrounding the primary conductors between the primary conductors and the core.
    Type: Application
    Filed: November 5, 2012
    Publication date: May 16, 2013
    Applicant: ATREUS ENTERPRISES LIMITED
    Inventor: Atreus Enterprises Limited
  • Publication number: 20120243140
    Abstract: A circuit protection device includes a circuit conductor, at least one wire coil having at least one winding sized to receive the circuit conductor therein, and a ground shield configured to shield the winding from an electrostatic field generated by a common mode voltage between the circuit conductor and the winding.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 27, 2012
    Inventor: Nikhil Purushottam Gan
  • Publication number: 20120218070
    Abstract: The present invention relates generally to systems and methods for isolating a current loop conductor of a current loop system of a pre-charge circuit from a plurality of current transformers disposed around the current loop conductor. In particular, the embodiments described herein include an insulating support flange having a first tubular section, a second tubular section radially disposed around the first tubular section and connected to the first tubular section via a solid annular section extending radially outward from the first tubular section to a first end of the second tubular section, an annular base extending radially outward from a second end of the second tubular section, and a plurality of prongs extending axially from or near to an outer circumference of the annular base, wherein each of the prongs comprises an end face that is angled toward the second tubular section. The insulating support flanges are configured to mate with each other along an axial direction of the current loop conductor.
    Type: Application
    Filed: February 25, 2011
    Publication date: August 30, 2012
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: David Scott MacLennan, Mariana Wentzell
  • Publication number: 20120194312
    Abstract: Apparatus and method for generating electric energy in an electric power transmission system includes an AC cable including a core, wherein a portion of the core is partially surrounded by an apparatus including a ferromagnetic body and an electrically conducting winding. The ferromagnetic body extends along a longitudinal axis and has, in a cross section taken along said longitudinal axis, a shape defined by an arc. The electrically conducting winding is wound around the ferromagnetic body to form turns in planes substantially perpendicular to the arc.
    Type: Application
    Filed: July 30, 2009
    Publication date: August 2, 2012
    Inventors: Lluís-Ramon Sales Casals, Joaquin Del Rio Fernàndez, Rafael Lara, Antonio Manuel Lazaro
  • Patent number: 8028401
    Abstract: A method of fabricating a conducting crossover structure for a power inductor comprises stamping a first lead frame to define a first terminal and a second terminal; stamping a second lead frame to define a first terminal and a second terminal; and locating an insulating material between and in contact with the first and second lead frames to form a laminate.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: October 4, 2011
    Assignee: Marvell World Trade Ltd.
    Inventor: Sehat Sutardja
  • Publication number: 20110116197
    Abstract: A current sensor assembly used for detecting ground faults, which includes an enclosure surrounding the current sensor for focusing the magnetic flux produced by conductors passing through the current sensor assembly away from the conductors, thereby reducing load-shift error and producing more accurate current readings for ground-fault sensing. The enclosure has two half members that are secured together to form a toroid-shaped shell that surrounds a toroidal core of the current sensor. A secondary winding and an optional test winding is wound around the toroidal core, and the ends of these windings exit one or more apertures formed in the enclosure. The half members have rounded profiles where the flat surfaces transition into different planes so that the magnetic flux does not encounter any sharp edges or transitions inside the enclosure as the flux flows away from the conductors.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 19, 2011
    Applicant: Square D Company
    Inventor: Henry J. Zylstra
  • Patent number: 7902955
    Abstract: An inductive coupler assembly has a first coupler having a first support structure and plural discrete first ferromagnetic segments supported by the first support structure, and a second coupler to inductively couple to the first coupler, the second coupler having a second support structure and plural discrete ferromagnetic segments supported by the second support structure.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: March 8, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Anthony F. Veneruso, Christian Chouzenoux, Fabien Cens, Sara Escanero, Dinesh R. Patel, Jean Luc Garcia
  • Patent number: 7882614
    Abstract: A method for providing a power inductor comprises forming a first magnetic core material having first and second ends and an inner cavity that extends from the first end to the second end; forming a first notch in the first magnetic core material that projects inwardly towards the inner cavity from one of the first and second ends; and passing a first conductor through the inner cavity that is received by the first notch.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: February 8, 2011
    Assignee: Marvell World Trade Ltd.
    Inventor: Sehat Sutardja
  • Publication number: 20110006755
    Abstract: A current transformer is provided. The current transformer comprises an inner magnetic core having a central opening, an outer sense core circumscribing the inner magnetic core, at least one pair of conductors extending through the central opening and positioned symmetrically with respect to a center point of the inner magnetic core, and one or more coils disposed on the inner magnetic core, the outer sense core, or both, in a magnetically balanced configuration relative to a magnetic neutral axis of the inner magnetic core.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 13, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Karim Younsi, Prabhakar Neti, Manoj Ramprasad Shah, Yingneng Zhou, Charles David Whitefield, II
  • Patent number: 7859379
    Abstract: It is possible to provide a transformer core which can be mounted on a coil having both ends connected to a substrate or the like and can simplify the step for arranging an adhesive layer and suppress fluctuation of a magnetic gap. The transformer core (1) includes: a rectangular spacer (5, 20) having a region where a first convex portion (10, 21) is formed on the four sides of one of the surfaces as a unitary block and the first convex portion is not provided at least at a part of a pair of two opposing sides; and a sheet-shaped adhesive layer (6) bonded to a region where at least the first convex portion is not provided on the one of the surfaces of the spacer and connecting a soft ferrite core (4) to the spacer.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: December 28, 2010
    Assignee: Hitachi Metals, Ltd.
    Inventor: Masayasu Uemura
  • Patent number: 7859378
    Abstract: There is provided an inductive coupler. The inductive coupler includes (a) a housing having an aperture that extends lengthwise through the housing, a gap that extends lengthwise along a side of the housing, and a flexible region that enables the gap to be opened or closed, wherein the gap, when opened, permits the inductive coupler to be installed on a conductor by having the conductor routed through the aperture. The inductive coupler also includes (b) a magnetic core; and (c) a winding wound around a portion of the magnetic core. The magnetic core and the winding are secured to the housing such that a position of the magnetic core and a position of the winding are maintained relative to one another. The inductive coupler, when installed on the conductor, couples a signal between the conductor and the winding via the magnetic core.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: December 28, 2010
    Assignee: Ambient Corporation
    Inventors: Erik S. Merck, Ram Das S. Rao, David Goldblatt, Kokou A. Amefia
  • Patent number: 7825763
    Abstract: The current transformer comprises at least two partial circuits (CBn) each comprising a Rogowski type winding (Cn), each of said the partial circuits being made in the form of an angular portion of a complete circuit (CB) which surrounds at least one primary conductor (10, 10A, 10B, 10C) of the transformer over 360°. The winding (Cn) of each partial circuit (CBn) is constituted by a go winding (Cn0) and by a return winding (Cn1) which extend over the angular extent (?n) of the partial circuit (CBn). For each partial circuit (CBn), the go and return windings are electrically connected in series, both having turns wound in the same direction so as to form a single winding (Cn) which presents a pair of adjacent electrical terminations (T1n, T2n) connected to an acquisition system (7, 7?).
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: November 2, 2010
    Assignee: Areva T&D SA
    Inventors: Jean-Pierre Dupraz, Lionel Lucot, Olivier Chuniaud, Bernard Regnier
  • Patent number: 7795877
    Abstract: A power line communication device is provided that in one embodiment includes a parameter sensor device configured to measure a parameter of a power line, a modem configured to transmit parameter data over a power line, and a controller communicatively coupled to the current sensor device and modem. The parameter sensor device may include a current sensor device that includes a Rogowski coil. For measuring the current or other parameter of a higher voltage power line conductor, the parameter sensor device may be configured to provide data to the controller via a non-conductive communication link, such as via a wireless, fiber optic, or radio frequency transponder link. In addition, the parameter sensor device may include an isolated power source and receive power via a fiber optic conductor or inductively from the power line.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: September 14, 2010
    Assignee: Current Technologies, LLC
    Inventors: William O. Radtke, Andrew T. Rayno
  • Publication number: 20100176904
    Abstract: A current detection printed board includes: a board having a penetration hole that penetrates the board; and at least one wire that is formed in a coiled shape having both ends by penetrating the board along the periphery of the penetration hole and alternately connecting a front surface layer and a rear surface layer of the board, wherein, when a conductor, in which an AC current flows, is disposed to pass through the inside of the penetration hole, a current flowing in the wire is output through electromagnetic induction.
    Type: Application
    Filed: March 26, 2010
    Publication date: July 15, 2010
    Applicant: DAIHEN CORPORATION
    Inventors: Yoshifumi IBUKI, Shigeki Amadatsu, Tomohiko Kitano, Shuji Omae
  • Publication number: 20100148906
    Abstract: A power acquisition device fixed to an illuminating device having a fluorescent tube and a reflective plate so as to acquire power from a magnetic field generated by an alternating current flowing through the fluorescent tube by electromagnetic induction. The power acquisition device is fixed so as to surround the fluorescent tube and at least one of the thickness in the direction perpendicular to the surface of the fluorescent tube and the length in the direction parallel to the length direction of the fluorescent tube is non-uniformly.
    Type: Application
    Filed: May 16, 2008
    Publication date: June 17, 2010
    Inventor: Mitsunori Morisaki
  • Publication number: 20100084920
    Abstract: A current transforming harvester (“CTH”) is capable of producing power from a conductor on a preexisting power grid without alteration of the conductor or the preexisting power grid. The CTH includes a current transformer (“CT”) that captures energy via magnetic flux from the conductor. The CT is substantially circular and includes two halves called a “split core,” which allow the CT to easily attach to the conductor without opening the circuit in which the conductor operates. A clamping mechanism of the CTH may secure the CTH to the conductor via a pair of spring-biased clamp pads. The CTH includes circuitry that converts the magnetic flux energy captured by the CT into electrical energy suitable for consumption by an electrical device.
    Type: Application
    Filed: September 29, 2009
    Publication date: April 8, 2010
    Applicant: Cooper Technologies Company
    Inventors: John Fredrick Banting, Bruce W. McBee
  • Patent number: 7676922
    Abstract: A micro-electromechanical system (MEMS) inductor is formed in a saucer shape that completely surrounds a magnetic core structure which is formed from a ferromagnetic material. In addition, an array of MEMS inductors can be formed by dividing up the saucer-shaped MEMS inductor into a number of electrically-isolated MEMS inductor wedges.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 16, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Peter J. Hopper, Peter Johnson, Kyuwoon Hwang, Philipp Lindorfer
  • Patent number: 7663459
    Abstract: A short-circuit indicator is provided for arrangement on an electrical line for electrical power distribution which includes a current transformer. The current transformer has an induction coil and an iron yoke for surrounding the electrical line to be monitored for a short-circuit current. The induction coil is seated on a base web of a U-shaped first yoke part. A second yoke part is connected in the form of a joint which can move between a closed position and an open position to one of two U-limbs of the first yoke part. The second yoke part forms a magnetic return path element for the first yoke part in the closed position. The first yoke part is split into two essentially L-shaped parts in the area of the base web to which the induction coil is fitted.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: February 16, 2010
    Assignee: Dipl.-Ing. H. Horstmann GmbH
    Inventor: Hendrik Horstmann
  • Publication number: 20090230948
    Abstract: A Rogowski coil assembly includes a first Rogowski coil that surrounds a conductor and generates a first voltage output signal. A second Rogowski coil also surrounds the conductor. The second Rogowski coil generates a second voltage output signal. A relay device communicates with the first and second Rogowski coils and processes the first and second voltage output signals. For example, the relay device can process the voltage output signals to calculate an amount of noise in the first and second output voltage signals and/or to minimize the amount of noise in the first and second output voltage signals.
    Type: Application
    Filed: June 2, 2009
    Publication date: September 17, 2009
    Applicant: Cooper Technologies Company
    Inventor: Ljubomir A. Kojovic
  • Patent number: 7486066
    Abstract: The present invention aims to obtain a stable output voltage without requiring an extra circuit by suppressing influence of noise of the primary winding and voltage induction by leakage inductance. In a transformer 3 used in a multi-output switching power supply, a secondary winding S1 for outputting a voltage to be fed back to the primary side out of the secondary windings S2 to Sn winded on a bobbin 3a is divided into a first layer S1a and a second layer S1b, a secondary winding S2 to Sn for outputting a voltage not fed back to the primary side is winded between the first layer S1a and the second layer S1b, and the first layer S1a and the second layer S1b is regular winded.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: February 3, 2009
    Assignee: Funai Electric Co., Ltd.
    Inventor: Atsuhiko Nagamune
  • Publication number: 20090009274
    Abstract: A short-circuit indicator is provided for arrangement on an electrical line for electrical power distribution which includes a current transformer. The current transformer has an induction coil and an iron yoke for surrounding the electrical line to be monitored for a short-circuit current. The induction coil is seated on a base web of a U-shaped first yoke part. A second yoke part is connected in the form of a joint which can move between a closed position and an open position to one of two U-limbs of the first yoke part. The second yoke part forms a magnetic return path element for the first yoke part in the closed position. The first yoke part is split into two essentially L-shaped parts in the area of the base web to which the induction coil is fitted.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 8, 2009
    Inventor: Hendrik Horstmann