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公开(公告)号：EP0860030A1
公开(公告)日：1998-08-26
申请号：EP96942731.0
申请日：1996-11-07
发明人： RILEY, Gilbert, N., Jr. , SEUNTJENS, Jeffrey, M. , BARNES, William, L. , SNITCHLER, Gregory, L. , OTTO, Alexander
CPC分类号： H01L39/248 , H01F6/06 , H01F41/063 , H01F41/069 , Y10S505/74
摘要： A method for preparing an oxide superconductor cable includes transposing a plurality of oxide superconductor strands along a longitudinal axis so as to form a cable and exposing the cable to a two step heat treatment after cabling of the oxide strands, the heat treatment comprising: (a) heating the cable to and maintaining the cable at a first temperature sufficient to partially melt the article, such that a liquid phase co-exists with the desired oxide superconductor phase; and (b) cooling the cable to and maintaining the cable at a second temperature sufficient to substantially transform the liquid phase into the desired oxide superconductor. The oxide superconductor multistrand cable includes a plurality of oxide superconductor strands, each of the strands including an oxide superconductor having an irreversible melt characteristic, wherein the plurality of oxide strands are transposed about a longitudinal axis, such that each of the strands are substantially electrically and substantially mechanically isolated; and wherein the cable exhibits critical transport properties (Jc) of at least about 10,000 A/cm2 at 77K, self field.
摘要翻译： 一种用于制备氧化物超导体电缆的方法包括：将多根氧化物超导体股线沿着纵向轴线移位以形成电缆，并且在电缆布设氧化物股线之后使电缆暴露于两步热处理，所述热处理包括： ）将所述电缆加热至并维持所述电缆处于足以部分熔化所述制品的第一温度，使得液相与所述期望的氧化物超导体相共存; 和（b）将电缆冷却到第二温度并保持电缆足以使液相基本上转变成所需的氧化物超导体。 氧化物超导体多股线缆包括多个氧化物超导体股线，每个股线包括具有不可逆熔融特性的氧化物超导体，其中多个氧化物股线围绕纵向轴线转置，使得每个股线基本上电和 基本上机械隔离; 并且其中所述电缆在77K自场下表现出至少约10,000A / cm 2的临界传输性质（Jc）。
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公开(公告)号：EP0808506A1
公开(公告)日：1997-11-26
申请号：EP96905393.0
申请日：1996-02-05
发明人： GOLD, Calman
IPC分类号： H01F36
摘要： The invention is an inductive device featuring very low losses even in circuits that supply more than about 10 kilowatts of power. The device includes an inductor comprising a core (300) consisting primarily of a highly permeable magnetic material and at least one winding (304) of a high temperature superconducting conductor contained substantially within the core (300) and in spaced relation with respect to the core (300) sufficient to maintain its electrical integrity, a refrigeration means for cryogenically cooling at least the conductor winding portion (304) of the inductor to a temperature at which each conductor winding (304) exhibits superconductivity, and an input/output device for providing power to and receiving power from each conductor winding (304). Also disclosed are a balancing choke and a circuit embodying a common mode inductor made in accordance with the invention.
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公开(公告)号：EP0808505A1
公开(公告)日：1997-11-26
申请号：EP96909481.0
申请日：1996-02-05
发明人： GOLD, Calman , RUSSO, Carl, J.
摘要： A cryogenically cooled circuit (12), operating at temperatures at which inductors windings (L1) of the circuit exhibit superconducting characteristics, provides unique advantages in high performance, preferably high power circuits. Portions of the circuit (or the entire circuit), as opposed to, for example only the superconducting elements (i.e., inductor winding (216)), are refrigerated to cryogenic temperatures. Advantages in the characteristics of not only the superconducting based components but also the diodes, and gating elements such as MOSFET's (208-213), yield a uniquely advantageous circuit enabling the operation of, for example, a switching power supplies, frequency converters, and motor speed controllers with increased performance and efficiency. Size, component count, and stability are benefits attained by cryogenically cooling the entire circuit configuration. Cryogenically-cooled solid-state contacting switches may be utilized for connecting/disconnecting AC and/or DC power between the high performance circuit and a source/load.
摘要翻译： 在电路的电感器绕组（L1）呈现超导特性的温度下工作的低温冷却电路（12）在高性能，优选高功率电路中提供独特的优点。 与例如仅超导元件（即，电感器绕组（216））相反，电路部分（或整个电路）被冷却到低温温度。 不仅基于超导的组件而且二极管以及诸如MOSFET（208-213）的门控元件的优点都产生了独特有利的电路，该电路使得例如开关电源，变频器和 具有更高性能和效率的电机速度控制器。 通过对整个电路结构进行低温冷却可以获得尺寸，元件数量和稳定性。 低温冷却的固态接触开关可用于在高性能电路与电源/负载之间连接/断开AC和/或DC电源。
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34.发明公开TORSIONAL TEXTURING OF SUPERCONDUCTING OXIDE COMPOSITE ARTICLES 失效TORSIONSTEXTURIEREN超导OXYDVERBUNDGEGENSTÄNDEN的
公开(公告)号：EP0780024A1
公开(公告)日：1997-06-25
申请号：EP95933044.0
申请日：1995-09-08
CPC分类号： H01L39/248 , Y10T29/49014
摘要： A method of texturing a multifilamentary article having filaments comprising a desired oxide superconductor or its precursors by torsionally deforming the article is provided. The texturing is induced by applying a torsional strain which is at least about 0.3 and preferably at least about 0.6 at the surface of the article, but less than the strain which would cause failure of the composite. High performance multifilamentary superconducting composite articles having a plurality of low aspect ratio, twisted filaments with substantially uniform twist pitches in the range of about 1.00 inch to 0.01 inch (25 to 0.25 mm), each comprising a textured desired superconducting oxide material, may be obtained using this texturing method. If tighter twist pitches are desired, the article may be heat treated or annealed and the strain repeated as many times as necessary to obtain the desired twist pitch. It is preferred that the total strain applied per step should be sufficient to provide a twist pitch tighter than 5 times the diameter of the article, and twist pitches in the range of 1 to 5 times the diameter of the article are most preferred. The process may be used to make a high performance multifilamentary superconducting article, having a plurality of twisted filaments, wherein the degree of texturing varies substantially in proportion to the radial distance from the center of the article cross section, and is substantially radially homogeneous at any given cross section of the article. Round wires and other low aspect ratio multifilamentary articles are preferred forms. The invention is not dependent on the melting characteristics of the desired superconducting oxide. Desired oxide superconductors or precursors with micaceous or semi-micaceous structures are preferred. When used in connection with desired superconducting oxides which melt irreversibly, it provides multifilamentary articles that exhibit high DC performance characteristics and AC performance markedly superior to any currently available for these materials. In a preferred embodiment, the desired superconducting oxide material is BSCCO 2223.
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公开(公告)号：EP0705228A1
公开(公告)日：1996-04-10
申请号：EP92910665.0
申请日：1992-03-12
发明人： SANDHAGE, Kenneth H.
CPC分类号： C04B35/4684 , C04B35/491 , C04B35/65 , H01L41/1871 , H01L41/1876 , H01L41/27 , H01L41/39
摘要： Principal types of dielectric ceramics include capacitors, and piezoelectric electrooptic and optical ceramics. The former are typically barium titanates, the latter, so-called PZT or PLZT materials. The ceramic materials are made by forming an alloy including the metallic elements in substantially stoichiometric proportions, and then oxidizing the alloy to produce the ceramic. In preferred embodiments, the alloy includes a dopant that is encapsulated in a noble metal, preferably silver. Preferred dielectrics are made by making a multi-layer structure in which a plurality of alloy layers (typically less than 20, and preferably less than 5, microns thick) are separated by conductive layers (preferably a noble metal), and then oxidizing the overall structure to form a multi-layer capacitor.
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36.发明公开
公开(公告)号：EP0640249A1
公开(公告)日：1995-03-01
申请号：EP93910615.0
申请日：1993-04-13
CPC分类号： C04B35/65 , C04B35/45 , H01L39/2419 , H01L39/2477 , Y10S505/704 , Y10S505/736 , Y10S505/74 , Y10S505/742 , Y10S505/776 , Y10S505/78 , Y10S505/813 , Y10T29/49014
摘要： A strongly-linked polycrystalline oxide superconductor article includes an oxide superconductor selected from the group consisting of 124-type and 247-type oxide superconductors having fine, highly aligned oxide superconductor grains less than 50 νm along a longest dimension. The oxide superconductor article has at least a 25 % retention of critical current density in a 0.1 Tesla field. A method for preparing a strongly-linked oxide superconductor includes shaping a finely divided metallic precursor of an oxide superconductor; oxidizing the finely divided metallic precursor to produce a finely divided sub-oxide species while avoiding conversion of an appreciable amount of the sub-oxide species into the oxide superconductor; annealing and deforming the article, in either order, the annealing carried out at a temperature and for a time sufficient to convert some of the sub-oxide species into fine grains of the oxide superconductor thereby forming a mixture of sub-oxide species and oxide superconductor and the deformation carried out such that the fine grains of oxide superconductor are rotated into alignment parallel to an intended current carrying direction of the article without fracturing or pulverization of the oxide superconductor grains; alternating annealing and deformation of the article until no further improvement in alignment is observed; and subjecting the aligned grains to a final anneal in order to react any remaining sub-oxide species and maximize the growth and sintering of existing aligned grains.
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37.发明公开
公开(公告)号：EP0496825A4
公开(公告)日：1992-11-19
申请号：EP90916929
申请日：1990-10-16
CPC分类号： H01L39/02 , H01L39/2419 , Y10S428/93 , Y10S505/702 , Y10S505/706 , Y10S505/725 , Y10S505/736 , Y10S505/739
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38.发明公开
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公开(公告)号：EP3596794A1
公开(公告)日：2020-01-22
申请号：EP18715387.9
申请日：2018-03-15
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公开(公告)号：EP2831987B1
公开(公告)日：2018-01-31
申请号：EP13714832.6
申请日：2013-03-27
CPC分类号： H02K3/04 , H01L39/143 , H02K7/1838 , H02K55/04 , Y02E10/725 , Y02E40/625
摘要： A rotating machine includes a stator and a rotor configured to rotate within the stator. Rotor windings are supported in the rotor and are formed of a laminated electrical conductor in a single-layer saddle coil configuration. The conductor includes a first support lamina, a second support lamina, an insert including a high temperature superconductor disposed between the first and second support lamina, and a filler material surrounding the insert that bonds the insert to each of the first and second support lamina. At the location between the first support lamina and second support lamina corresponding to the location of the insert, the width dimension of the filler material on each side of the insert is at least 10 percent of a width of the conductor. The conductor is configured to carry at least 600 Amperes per turn and have a C-axis tensile strength of at least 21 MPa.
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