Having Plural Superconducting Wire Or Superconducting Fiber Component (e.g., Multifilament Wire, Etc.) Patents (Class 505/231)
  • Patent number: 11972877
    Abstract: A superconducting wire connector includes superconducting wires and a sintered body containing MgB2. The superconducting wires are connected by the sintered body. At least one of the superconducting wires includes a superconducting core having a first outer surface. The sintered body is in contact with the first outer surface. A method of connecting superconducting wires by a sintered body containing MgB2 includes exposing a superconducting core of at least one of the superconducting wires by removing a portion, positioned in the middle in a longitudinal direction of the at least one of the superconducting wires, of a metal sheath disposed around the superconducting core, disposing the at least one of the superconducting wires through a container, filling the container with a raw material of MgB2, and forming the sintered body being in contact with an outer surface of the superconducting core by sintering the raw material filled in the container.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: April 30, 2024
    Assignee: HITACHI, LTD.
    Inventors: Shinji Fujita, Tsuyoshi Wakuda, Yota Ichiki, Motomune Kodama
  • Patent number: 11910727
    Abstract: An ultra-thin film superconducting tape and method for fabricating same is disclosed. Embodiments are directed to a superconducting tape being fabricated by processes which include removing a portion of the superconducting tape's substrate subsequent the substrate's initial formation, whereby a thickness of the superconducting tape is reduced to 15-80 ?m.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: February 20, 2024
    Assignee: University of Houston System
    Inventor: Venkat Selvamanickam
  • Patent number: 11887751
    Abstract: A composite billet includes an array of textured-powder bars in a geometry that is compatible with assembly and drawing of a billet with LAR˜1:1. A method is presented of compressing the bars suitable for the billet geometry in an inert gas environment. Methods of drawing of the billet control the deformation of the composite billet during area-reducing draw to fine wire so that the shape and registration of the constituent bars is preserved. Lastly a method is disclosed to fabricate a cable-in-conduit conductor containing the textured-powder Bi-2212/Ag wires that enables robust forming of windings and also provides in-cable containment of a buffer gas flow under high pressure during the high-temperature heat treatment of the winding that is required to produce optimum superconducting performance in the winding.
    Type: Grant
    Filed: October 24, 2021
    Date of Patent: January 30, 2024
    Assignees: The Texas A&M University System, Accelerator Technology Corp.
    Inventors: Peter McIntyre, John Scott Rogers
  • Patent number: 11887752
    Abstract: A design is presented for a structured cable suitable for carrying a large electric current in a cable-in-conduit comprising an assembly of rectangular stacks of thin superconducting tapes, with provisions for mechanical support of large mechanical stress and cross-flow of cooling fluid capable of removing large amounts of heat.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: January 30, 2024
    Assignees: The Texas A&M University System, Accelerator Technology Corp.
    Inventors: Peter McIntyre, John Scott Rogers
  • Patent number: 11877521
    Abstract: A multi-filament high temperature superconducting cable having improved AC current carrying capacity, quench resistance and flexibility. The multi-filament cable is formed from a plurality of stacked exfoliated filaments which provide current sharing between adjacent superconducting layers.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: January 16, 2024
    Assignee: Brookhaven Technology Group, Inc.
    Inventor: Vyacheslav Solovyov
  • Patent number: 11858853
    Abstract: A method of producing polycrystalline Y3Ba5Cu8Oy (Y-358) whereby powders of yttrium (III) oxide, a barium (II) salt, and copper (II) oxide are pelletized, calcined at 850 to 950° C. for 8 to 16 hours, ball milled under controlled conditions, pelletized again and sintered in an oxygen atmosphere at 900 to 1000° C. for up to 72 hours. The polycrystalline Y3Ba5Cu8Oy thus produced is in the form of elongated crystals having an average length of 2 to 10 ?m and an average width of 1 to 2 ?m, and embedded with spherical nanoparticles of yttrium deficient Y3Ba5Cu8Oy having an average diameter of 5 to 20 nm. The spherical nanoparticles are present as agglomerates having flower-like morphology with an average particles size of 30 to 60 nm. The ball milled polycrystalline Y3Ba5Cu8Oy prepared under controlled conditions shows significant enhancement of superconducting and flux pinning properties.
    Type: Grant
    Filed: August 2, 2023
    Date of Patent: January 2, 2024
    Assignee: Imam Abdulrahman Bin Faisal University
    Inventor: Yassine Slimani
  • Patent number: 11721462
    Abstract: A high temperature superconductor (HTS) cable comprising at least one coil form comprising a helical channel formed on an exterior surface of the coil form and the helical channel extending at least partially along an axial length of the coil form and a plurality of high temperature superconductor (HTS) tape layers positioned within the helical channel of the coil form. A method for operating a winding machine to produce a high temperature superconductor (HTS) cable comprising a plurality of coil forms comprising a helical channel formed on an exterior surface of the coil form.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: August 8, 2023
    Assignee: The Florida State University Research Foundation, Inc.
    Inventor: Thomas Andrew Painter
  • Patent number: 11710583
    Abstract: A superconducting coil comprising an oxide superconducting wire includes: a superconducting laminate comprising a substrate and an oxide superconducting layer; and a stabilization layer made of copper plating formed around the superconducting laminate. A thickness d of the stabilization layer is in the range of 10 to 40 ?m. A ratio Ra/d of the thickness d of the stabilization layer and an arithmetic mean roughness Ra of an outer surface of the stabilization layer is in the range of 0.005 to 0.03. An intermediate layer is arranged between the substrate and the oxide superconducting layer. When a tensile test of pulling the oxide superconducting wire in a longitudinal direction within a stress range of 180 to 600 MPa in liquid nitrogen is performed, a ratio of a critical current when a repeated pulling number reaches 100,000 times and an initial critical current measured before the tensile test is 0.99 or more.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: July 25, 2023
    Assignee: Fujikura Ltd.
    Inventor: Shinji Fujita
  • Patent number: 11491543
    Abstract: A method for the production of a superconducting wire (20) uses a monofilament (1) having a powder core (3) that contains at least Sn and Cu, an inner tube (2), made of Nb or an alloy containing Nb, that encloses the powder core (3), and an outer tube (4) in which the inner tube (2) is arranged. The outer side of the inner tube (2) is in contact with the inner side of the outer tube (4) and the outer tube (4) is produced from Nb or from an alloy containing Nb. The outer tube is disposed in a cladding tube. The superconducting current carrying capacity of the superconducting wire is thereby improved.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: November 8, 2022
    Assignee: Bruker EAS GmbH
    Inventor: Manfred Thoener
  • Patent number: 11488747
    Abstract: A superconducting power cable system includes a superconducting power cable in a first temperature environment separated from a second temperature environment by a thermal barrier. The first temperature environment is an interior of a cryostat and is at a lower temperature than the second temperature environment located outside of the cryostat. At least one superconducting feeder cable has a first end electrically coupled to the superconducting power cable in the first temperature environment, and a second end electrically coupled to a normal conducting current lead in the second temperature environment. Each superconducting feeder cable is a flexible superconducting cable or wire formed of multiple superconducting tapes that are wound in a helical fashion and in multiple layers around a round former.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: November 1, 2022
    Assignee: Advanced Conductor Technologies LLC
    Inventor: Daniël Cornelis van der Laan
  • Patent number: 11380461
    Abstract: A superconducting flexible interconnecting cable connector for supercomputing systems is provided. The cable connector includes a base with a recessed area defined therein to receive superconducting flexible interconnecting cables and superconducting connecting chips to electrically connect the superconducting flexible interconnecting cables to each other. A cover is provided to cover the superconducting flexible interconnecting cables and the superconducting connecting chips when the cover is in a closed position. A compression device compresses the superconducting connecting chips together to secure the superconducting flexible interconnecting cables and the superconducting connecting chips inside the recessed area of the base when the cover is in the closed position.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 5, 2022
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventor: Jonathan Francis Van Dyke
  • Patent number: 11367742
    Abstract: A display panel includes: a base layer; a signal line disposed on the base layer, the signal line including: a first layer including aluminum; and a second layer directly disposed on the first layer, the second layer including a niobium-titanium alloy; a first thin film transistor connected to the signal line; a second thin film transistor disposed on the base layer; a capacitor electrically connected to the second thin film transistor; and a light emitting element electrically connected to the second thin film transistor.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 21, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyuneok Shin, Kyeongsu Ko, Sanggab Kim, Hongsick Park, Sangwoo Sohn, Dokeun Song, Sangwon Shin, Sukyoung Yang, Dongmin Lee
  • Patent number: 10971278
    Abstract: This superconducting wire includes: a strand including a superconducting material; and a stabilizer material for superconductor arranged in contact with the strand, wherein the stabilizer material for superconductor includes a copper material which contains one kind or two kinds or more of additive elements selected from Ca, Sr, Ba, and rare earth elements (RE) for a total amount of 3 ppm by mass or more and 400 ppm by mass or less, with the remainder being Cu and unavoidable impurities, the total concentration of the unavoidable impurities other than O, H, C, N, and S, which are gas components, is 5 ppm by mass or more and 100 ppm by mass or less, and compounds including one kind or two kinds or more selected from CaS, CaSO4, SrS, SrSO4, BaS, BaSO4, (RE)S, and (RE)2SO2 are present in the matrix.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 6, 2021
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Kosei Fukuoka, Yuki Ito, Kazunari Maki
  • Patent number: 10916361
    Abstract: An oxide superconductor according to an embodiment includes an oxide superconducting layer includes a single crystal having a continuous perovskite structure containing at least one rare earth element selected from the group consisting of yttrium, lanthanum, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, barium, and copper, containing praseodymium is a part of the site of the rare earth element in the perovskite structure, and having a molar ratio of praseodymium of 0.00000001 or more and 0.2 or less with respect to the sum of the at least one rare earth element and praseodymium; fluorine in an amount of 2.0×1015 atoms/cc or more and 5.0×1019 atoms/cc or less; and carbon in an amount of 1.0×1017 atoms/cc or more and 5.0×1020 atoms/cc or less.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: February 9, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mariko Hayashi, Takeshi Araki, Hiroyuki Fuke, Nao Kobayashi
  • Patent number: 10679775
    Abstract: In various embodiments, superconducting wires feature assemblies of clad composite filaments and/or stabilized composite filaments embedded within a wire matrix. The wires may include one or more stabilizing elements for improved mechanical properties.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: June 9, 2020
    Assignee: H.C. STARCK INC.
    Inventors: Paul Aimone, Francois-Charles Dary, David B. Smathers
  • Patent number: 10614932
    Abstract: The method is for manufacturing a high temperature multi-filamentary superconducting tape wire having an oxide superconducting layer formed on a tape-shaped metal substrate with an intermediate layer therebetween and a metal stabilizing layer formed on the oxide superconducting layer, wherein one or more lengthwise slits are formed in the oxide superconducting layer and the intermediate layer and no slits are formed in the metal substrate and the stabilizing layer. The method includes: a step for preparing a high temperature superconducting wire material having an oxide superconducting layer formed on a tape-shape metal substrate with an intermediate layer therebetween and a stabilizing layer formed on the oxide superconducting layer; and a step for applying a load to the high temperature superconducting wire material to form slits.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 7, 2020
    Assignee: RIKEN
    Inventors: Xinzhe Jin, Hideaki Maeda
  • Patent number: 10593444
    Abstract: Disclosed are various embodiments for a self-monitoring conducting device that responds to strain and temperature changes. In one example, a self-monitoring conducting device comprises a superconducting cable having a core and one or more layers of high-temperature superconductor (HTS) tape architecture surrounding the core. The self-monitoring conducting device further includes optical fibers integrated within the superconducting cable. The optical fibers can monitor a state of the superconducting cable along a length of the superconducting cable.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 17, 2020
    Assignee: NORTH CAROLINA STATE UNIVERSITY OFFICE OF TECHNOLOGY COMMERCIALIZATION AND NEW VENTURES
    Inventors: Justin Schwartz, Federico Scurti
  • Patent number: 10431823
    Abstract: Provided is a method for manufacturing a base material powder having a carbon nanocoating layer, the method including adding a polycyclic aromatic hydrocarbon to a base material powder, heating the mixture to a temperature that is higher than or equal to the boiling point of the polycyclic aromatic hydrocarbon and is lower than or equal to the relevant boiling point temperature+300° C., and that is higher than or equal to the thermal decomposition temperature of the polycyclic aromatic hydrocarbon, and thereby coating the surface of the base material powder with a layer of carbon having a thickness of 0.1 nm to 10 nm.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: October 1, 2019
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki Kumakura, Shujun Ye, Akira Hasegawa, Yoshimi Kubo, Eiki Yasukawa, Akihiro Nomura
  • Patent number: 9859046
    Abstract: A method, system, and apparatus for fabricating a high-strength Superconducting cable comprises pre-oxidizing at least one high-strength alloy wire, coating at least one Superconducting wire with a protective layer, and winding the high-strength alloy wire and the Superconducting wire to form a high-strength Superconducting cable.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 2, 2018
    Assignee: Fermi Research Alliance, LLC
    Inventor: Tengming Shen
  • Patent number: 9741472
    Abstract: Provided are a method for manufacturing MgB2 superconductor by pressure molding a mixture of Mg powder or MgH2 powder and B powder and heat-treating the mixture, the method including (I) a step of adding a polycyclic aromatic hydrocarbon to the B powder, while heating the mixture to a temperature higher to or equal to the melting point of the polycyclic aromatic hydrocarbon at the time of this addition, and thereby covering the surface of the B powder with the polycyclic aromatic hydrocarbon; and (II) a step of mixing the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with the Mg powder or the MgH2 powder, or a step of combining the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with an Mg rod; and an MgB2 superconducting wire which has high critical current density (Jc) characteristics and less fluctuation in the critical current density (Jc).
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 22, 2017
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki Kumakura, Akiyoshi Matsumoto, Shujun Ye
  • Patent number: 9564258
    Abstract: A coated conductor comprises a substrate supporting a ReBCO superconductor adapted to carry current in a superconducting state. The superconductor is characterized in having peaks in critical current (Jc) of at least 0.2 MA/cm2 in a magnetic field of about 1 Tesla when the field is applied normal to the surface of the superconductor and when the field is applied parallel to the surface of the superconductor, and further characterized in that the superconductor includes horizontal defects and columnar defects in a size and an amount sufficient to result in the said critical current response. The conductor is characterized in that the ratio of the height of the peaks in the Jc is in the range from 3:1 with the ratio of the field perpendicular (0 degrees) to the field parallel (+/?90 degrees) to the range from 3:1 with the ratio of the field parallel to the field perpendicular.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: February 7, 2017
    Assignee: Superconductor Technologies, Inc.
    Inventor: Jeong-Uk Huh
  • Patent number: 9042951
    Abstract: In an intermediate connecting unit 50 of superconducting cables, by forming the connecting superconducting wires 101 in a trapezoid shape tapered in the direction of the electric insulating layer 113 (the superconducting shield layers 114) sides from the large radius section 213a side of the reinforcement insulating layer 213, the inclined surface sections 213b can be covered without spaces and without the plurality of connecting superconducting wires overlapping. The plurality of connecting superconducting wires 101 cover the inclined surface sections 213b of the reinforcement insulating layer 213 formed thicker than the radius of the cable cores 11 of the superconducting cables 10. The connecting superconducting wires 101 further connects the superconducting wires 10 arranged on the outer periphery of the large radius section 213a of the reinforcement insulating layer 213 and the superconducting wires 100 constituting the superconducting shield layers 114.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 26, 2015
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomoya Nomura, Masashi Yagi, Takaharu Mitsuhashi, Jun Teng
  • Patent number: 9037203
    Abstract: A composite barrier-type Nb3Al superconducting multifilament wire material comprises Nb barrier filaments, Ta barrier filaments, Nb bulk dummy filaments, and a Nb or Ta covering. In the composite barrier-type Nb3Al superconducting multifilament wire material, the Nb barrier filaments and Ta barrier filaments are disposed in the wire material so that the Nb barrier filaments are concentrated in a filament region near a core formed from the Nb bulk dummy filaments and only the Ta barrier filaments are disposed or the Nb barrier filaments are dispersed in the Ta barrier filaments in an outer layer portion formed from a region outside the Nb barrier filaments, excluding the Nb or Ta covering.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 19, 2015
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Nobuya Banno, Takao Takeuchi
  • Publication number: 20150111756
    Abstract: Superconducting cables employ one or more superconducting tapes wound around a former. A compact superconducting cable is configured using a former having a small diameter, e.g., less than 10 millimeters. A flexible superconducting cable is configured with a former made of a flexible material. Superconducting tape conductors are wound around the former, with the superconducting layer in compression on the inside of the wind turns of the wind, to prevent irreversible damage to the superconductor. A layer of solder is on the superconducting tape(s) or solder sheaths are wound between tape conductors in each layer. The one or more solder layers or sheaths are melted to cause the solder to flow within the structure, to bond some or all of the superconducting tape conductors together and form a mechanically strong cable with an enhanced level of electrical connectivity between tapes in the cable.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 23, 2015
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventor: Daniel Cornelis van der Laan
  • Patent number: 9006576
    Abstract: A superconductive cable which has a cryostat with two concentric metal pipes where the cryostat has at least a first axial section with a first axial spring constant, and at least a second axial section which has a second axial spring constant which at most is 20%, more preferred at most 10%, of the axial spring constant of the first section.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 14, 2015
    Assignee: Nexans
    Inventors: Mark Stemmle, Rainer Soika
  • Publication number: 20150080225
    Abstract: In an intermediate connecting unit 50 of superconducting cables, by forming the connecting superconducting wires 101 in a trapezoid shape tapered in the direction of the electric insulating layer 113 (the superconducting shield layers 114) sides from the large radius section 213a side of the reinforcement insulating layer 213, the inclined surface sections 213b can be covered without spaces and without the plurality of connecting superconducting wires overlapping. The plurality of connecting superconducting wires 101 cover the inclined surface sections 213b of the reinforcement insulating layer 213 formed thicker than the radius of the cable cores 11 of the superconducting cables 10. The connecting superconducting wires 101 further connects the superconducting wires 10 arranged on the outer periphery of the large radius section 213a of the reinforcement insulating layer 213 and the superconducting wires 100 constituting the superconducting shield layers 114.
    Type: Application
    Filed: February 6, 2013
    Publication date: March 19, 2015
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Tomoya Nomura, Masashi Yagi, Takaharu Mitsuhashi, Jun Teng
  • Patent number: 8938278
    Abstract: Superconducting cables employ one or more superconducting tapes wound around a former. A compact superconducting cable is configured using a former having a small diameter, e.g., less than 10 millimeters. A flexible superconducting cable is configured with a former made of a flexible material. Superconducting tape conductors are wound around the former, with the superconducting layer in compression on the inside of the wind turns of the wind, to prevent irreversible damage to the superconductor. A layer of solder is on the superconducting tape(s) or solder sheaths are wound between tape conductors in each layer. The one or more solder layers or sheaths are melted to cause the solder to flow within the structure, to bond some or all of the superconducting tape conductors together and form a mechanically strong cable with an enhanced level of electrical connectivity between tapes in the cable.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: January 20, 2015
    Assignee: The Regents of the University of Colorado
    Inventor: Daniel Cornelis van der Laan
  • Patent number: 8914087
    Abstract: In a method or joint for joining first and second semiconductor wires, each comprising a number of filaments which each comprise a superconductive core within a respective sheath, the filaments being embedded within a matrix and wherein the superconductive cores comprise magnesium diboride and the sheaths comprise niobium, over a certain length a matrix is removed to expose the filaments. The exposed filaments are immersed in molten tin such that the nobium of the sheaths is converted to niobium-tin throughout a thickness of the sheaths. A superconductive path is provided between the superconductive cores of filaments of the first wire through the niobium-tin sheaths of the filaments to the superconductive cores of the second wire.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: December 16, 2014
    Assignee: Siemens PLC
    Inventor: Simon James Calvert
  • Patent number: 8880135
    Abstract: The present invention is configured such that, in a low AC loss oxide superconductor constituted by providing an oxide superconducting layer 6 on a substrate 1, said oxide superconducting layer 6 is separated into a plurality of filament conductors 2 in parallel to the lengthwise direction of said substrate 1 by dividing grooves 3 plurally formed in the widthwise direction of said substrate, and a high-resistance oxide 8 is formed in said dividing grooves 3. Because of the invention, it is possible to increase the insulation properties of individually divided mated filament conductors, and to obtain an oxide superconductor that has low AC loss.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: November 4, 2014
    Assignees: Railway Technical Research Institute, International Superconductivity Technology Center, the Juridical Foundation, Kyushu University, National University Corporation
    Inventors: Kenji Suzuki, Saburo Hoshi, Junko Matsuda, Teruo Izumi, Yuh Shiohara, Masataka Iwakuma
  • Publication number: 20140302997
    Abstract: A superconducting cable for power lead and transmission applications is disclosed. The high performance power cable comprises two type of different superconducting cable structures arranged co-axially, and the magnetic fields of their transport currents mutually enhance their performances. A further object is a power distribution cable that minimizes the cryogenic losses by a design of the compact cable cross-sections.
    Type: Application
    Filed: April 2, 2014
    Publication date: October 9, 2014
    Inventor: Makoto Takayasu
  • Publication number: 20140296077
    Abstract: A method, system, and apparatus for fabricating a high-strength Superconducting cable comprises pre-oxidizing at least one high-strength alloy wire, coating at least one Superconducting wire with a protective layer, and winding the high-strength alloy wire and the Superconducting wire to form a high-strength Superconducting cable.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 2, 2014
    Inventor: Tengming Shen
  • Publication number: 20140274726
    Abstract: A method for producing a composite superconductor includes: a structure forming process of forming a structure including a metal covering member (20) including at least one to-be-joined portion, a superconductor (30) arranged inside the metal covering member, and a reinforcing member (40) arranged between the superconductor (30) and the at least one to-be-joined portion; and a joining process of joining thereafter the at least one to-be-joined portion.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 18, 2014
    Applicants: INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masahiro Sugimoto, Hirokazu Tsubouchi, Hitoshi Shimizu, Toshiya Okada, Toshirou Sakai, Kazuya Takahata, Hitoshi Tamura, Toshiyuki Mito
  • Patent number: 8838194
    Abstract: In a method or joint for joining first and second semiconductor wires, each comprising a number of filaments which each comprise a superconductive core within a respective sheath, the filaments being embedded within a matrix and wherein the superconductive cores comprise magnesium diboride and the sheaths comprise niobium, over a certain length a matrix is removed to expose the filaments. The exposed filaments are immersed in molten tin such that the nobium of the sheaths is converted to niobium-tin throughout a thickness of the sheaths. A superconductive path is provided between the superconductive cores of filaments of the first wire through the niobium-tin sheaths of the filaments to the superconductive cores of the second wire.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: September 16, 2014
    Assignee: Siemens PLC
    Inventor: Simon James Calvert
  • Patent number: 8805462
    Abstract: A process applies a polymer to at least one individual conductor of a high-temperature superconductor (HTS) composite in the manner of a Roebel conductor. The at least one individual conductor includes a substrate and a superconducting layer. Particles are applied to the individual conductor. Then, a thermal treatment is performed which results in partial or complete melting of the particles and, after cooling, in a polymer layer on the individual conductor.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 12, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Tabea Arndt
  • Publication number: 20140221215
    Abstract: A precursor for a Nb3Sn superconductor wire to be manufactured by the internal diffusion method, includes a plurality of Nb-based single core wires, each of which includes a Nb-based core coated with a Cu-based coating including a Cu-based matrix, a plurality of Sn-based single core wires, each of which includes a Sn-based core coated with a Cu-based coating including a Cu-based matrix; and a cylindrical diffusion barrier including Ta or Nb, in which the plurality of Nb-based single core wires and the plurality of Sn-based single core wires are regularly disposed, wherein the plurality of Nb-based single core wires include Nb-based single core wires having a Cu/Nb ratio of 0.4 or more, wherein the Cu/Nb ratio is a cross sectional area ratio of the Cu-based coating to the Nb-based core.
    Type: Application
    Filed: September 9, 2013
    Publication date: August 7, 2014
    Applicant: SH Copper Products Co., Ltd.
    Inventors: Yoshihide Wadayama, Katsumi Ohata, Kazuhiko Nakagawa, Morio Kimura
  • Patent number: 8798697
    Abstract: An arrangement with a superconductive electrical direct current cable system is specified which includes at least one direct current transmission element (4) composed of two phase conductors which are insulated relative to each other, and a cryostat suitable for conducting a cooling agent, in which the direct current cable system is arranged. The cryostat is composed of at least one metal pipe which is surrounded by a circumferentially closed layer with thermally insulating properties. Each of the two phase conductors (5,6) is composed of several superconductive elements (9) which are combined into a unit. Between the two phase conductors (5,6) is mounted a separating layer (7) of insulating material, and the two phase conductors (5,6), including the separating layer (7) are surrounded by a sheath (8) of insulating material for forming a direct current transmission element (4).
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 5, 2014
    Assignee: Nexans
    Inventors: Mark Stemmle, Erik Marzahn
  • Publication number: 20140100118
    Abstract: A device and method for continuously forming superconducting wire, and products made therefrom. The method may include providing at least one continuous metal sheathing strip and at least one metal form, continuously forming the at least one continuous metal sheathing strip to form a partially open configuration, continuously filling the partially open configuration with magnesium diboride precursor comprising boron, and a metal form, and closing the partially open configuration thereby enclosing the magnesium diboride precursor comprising boron, and a metal form, to form a closed configuration. Subsequent reduction in diameter and elongation in length of the closed configuration, followed by heat treatment, catalyzes the transformation of the magnesium diboride precursor comprising boron, and the metal form, to magnesium diboride to form the superconducting wire.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 10, 2014
    Applicant: HYPER TECH RESEARCH, INC.
    Inventors: David D. Doll, Michael J. Tomsic, Matthew Rindfleisch, Chee June Thong, Hoong Pak Jinji Yue, Trent Wieber, Justin Wells
  • Publication number: 20140100117
    Abstract: A method for producing a superconducting wire (10), wherein an internal wire (1), which contains superconducting filaments (4), is provided with a normally conducting stabilizing structure (9), is characterized in that, in a continuous or quasi-continuous process, one or more sheath elements (2; 2a, 2b) are shaped and/or placed around the internal wire (9), so that the entire circumference of the internal wire (1) is enclosed by one or more sheath elements (2; 2a, 2b), and all seams (6; 6a, 6b; 16; 16a, 16b) of sheath element ends (5a-5d; 15a-15d) facing each other are soldered and/or welded. A method for producing a superconducting wire is thereby provided, which restricts the cross section of the superconducting wire to a lesser extent and which permits the use of lead-free solder.
    Type: Application
    Filed: September 19, 2013
    Publication date: April 10, 2014
    Inventors: Burkhard Prause, Manfred Thoener, Andreas Szulczyk
  • Patent number: 8688182
    Abstract: A superconductive electric cable is provided in which a cable core is arranged in a cryostat, where the cable core is composed of three phase conductors arranged concentrically around an inner cooling duct, with an electric insulation arranged between the phase conductors, and where the cryostat is surrounded by an electric insulation, which is surrounded by a neutral conductor of normally conductive materials. In this cable, a neutral conductor or a screening is arranged only outside of the cryostat, and is formed by normally conductive material which surrounds the cryostat as a common neutral conductor, where an insulating material is arranged between this neutral conductor and the cryostat.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: April 1, 2014
    Assignee: Nexans
    Inventors: Rainer Soika, Mark Stemmle
  • Patent number: 8682406
    Abstract: A high temperature superconductor structure including: a substrate on which at least one buffer layer is deposited, a superconductor layer on the buffer layer, the superconducting layer composed of superconductor material that forms at least two substantially parallel superconductor filaments that continuously extend along the length of the substrate wherein at least two superconductor filaments are separated from each other by at least one insulating strip wherein the insulating strip continuously extends along the length of the substrate and is composed of insulating material with a resistivity greater than about 1 m?cm. Also disclosed are methods of producing high temperature superconductors.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: March 25, 2014
    Assignees: University of Houston System, Superpower, Inc.
    Inventors: Venkat Selvamanickam, Senthil Sambandam
  • Patent number: 8670809
    Abstract: Adaptations and improvements to tubular metal powder filters include employing cross sectional geometries of any suitable shape, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace or a superconductive trace carried by a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: March 11, 2014
    Assignee: D-Wave Systems Inc.
    Inventors: Murray C. Thom, Sergey Uchaykin, Thomas Mahon, David Pires, Peter Spear, Jacob Craig Petroff
  • Patent number: 8655424
    Abstract: A superconductive electric cable is provided at least one superconductive conductor having strips or wires, which are wound in at least one layer around a carrier constructed as a pipe. The pipe is elastically deformable in a radial direction with changeable diameters and has a gap extending in a straight line along a circumferential line of the pipe over its entire length.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 18, 2014
    Assignee: Nexans
    Inventors: Rainer Soika, Frank Schmidt
  • Publication number: 20140038828
    Abstract: In a method or joint for joining first and second semiconductor wires, each comprising a number of filaments which each comprise a superconductive core within a respective sheath, the filaments being embedded within a matrix and wherein the superconductive cores comprise magnesium diboride and the sheaths comprise niobium, over a certain length a matrix is removed to expose the filaments. The exposed filaments are immersed in molten tin such that the nobium of the sheaths is converted to niobium-tin throughout a thickness of the sheaths. A superconductive path is provided between the superconductive cores of filaments of the first wire through the niobium-tin sheaths of the filaments to the superconductive cores of the second wire.
    Type: Application
    Filed: December 9, 2011
    Publication date: February 6, 2014
    Applicant: SIEMENS PLC
    Inventor: Simon James Calvert
  • Patent number: 8600465
    Abstract: There is provided a superconductive cable wherein an efficiency of an electric power transmission is increased to a maximum and the superconductive cable is miniaturized by strengthening a longitudinal magnetic field in a superconductive material.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: December 3, 2013
    Assignee: Kyushu Institute of Technology
    Inventor: Teruo Matsushita
  • Publication number: 20130316909
    Abstract: A composite barrier-type Nb3Al superconducting multifilament wire material comprises Nb barrier filaments, Ta barrier filaments, Nb bulk dummy filaments, and a Nb or Ta covering. In the composite barrier-type Nb3Al superconducting multifilament wire material, the Nb barrier filaments and Ta barrier filaments are disposed in the wire material so that the Nb barrier filaments are concentrated in a filament region near a core formed from the Nb bulk dummy filaments and only the Ta barrier filaments are disposed or the Nb barrier filaments are dispersed in the Ta barrier filaments in an outer layer portion formed from a region outside the Nb barrier filaments, excluding the Nb or Ta covering.
    Type: Application
    Filed: January 13, 2012
    Publication date: November 28, 2013
    Inventors: Nobuya Banno, Takao Takeuchi
  • Patent number: 8532725
    Abstract: A method of controlling fault currents within a utility power grid is provided. The method may include coupling a superconducting electrical path between a first and a second node within the utility power grid and coupling a non-superconducting electrical path between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path may be electrically connected in parallel. The superconducting electrical path may have a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path may have a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: September 10, 2013
    Assignee: American Superconductor Corporation
    Inventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
  • Patent number: 8521242
    Abstract: A superconductive cable with a central superconductive conductor (1), a surrounding dielectric (3) and a surrounding superconductive return conductor (4). The central conductor (1) is formed from a single ribbon carrying superconductive material into a tube with a longitudinal extending slot (2) with the two edges of the ribbon abutting to each other. A ribbon (14) made of semiconductive material is wound around the central conductor (1) with at least one layer.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: August 27, 2013
    Assignee: NEXANS
    Inventor: Frank Schmidt
  • Patent number: 8437819
    Abstract: Superconductor cable having a plurality of flat, tape-shaped ribbon superconductor wires assembled to form a stack having a rectangular cross section, the stack having a twist about a longitudinal axis of the stack. Multiple superconductor cables including twisted stacked-cables of the flat-tape-shaped superconductor wires, and power cable comprising the twisted flat-tape stacked cables are disclosed. Superconducting power cable disposed within and separated from an electrical insulator with a space passing cryo-coolant between the superconducting cable and insulator is also disclosed.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: May 7, 2013
    Assignee: Massachusetts Institute of Technology
    Inventors: Makoto Takayasu, Joseph V. Minervini, Leslie Bromberg
  • Patent number: 8433381
    Abstract: The arrangement method of superconducting wires of a superconducting cable, includes: in a case where a refrigerator is installed at one of terminal structures provided on both sides of a superconducting cable, and a cooling fluid is passed through the superconducting cable by a pump for cooling, setting the numbers of superconducting wires of sections of the superconducting cable installed between the terminal structures on both the sides to be different depending to temperatures of the sections, wherein the numbers of superconducting wires are increased from the section of the superconducting cable having the lowest temperature to the section thereof having the highest temperature while maintaining a current-carrying capability.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: April 30, 2013
    Assignee: LS Cable Ltd.
    Inventors: Chang Youl Choi, Su Kil Lee, Choon Dong Kim, Hyun Man Jang, Keun Tae Lee, Seok Hern Jang, Yang Hoon Kim
  • Publication number: 20130090245
    Abstract: A superconducting joint that electrically joins superconducting wires has a block of thermally and electrically conductive material that is coated with an electrically isolated coating that covers at least a part of a surface of the block. Molded semiconducting joint material is provided in contact with the electrically isolating coating. Superconducting filaments of the superconducting wires are embedded within the molded superconducting joint material.
    Type: Application
    Filed: June 13, 2011
    Publication date: April 11, 2013
    Applicant: Siemens PLC
    Inventor: Michael Simpkins