公开(公告)号：US3976934A

公开(公告)日：1976-08-24

申请号：US590678

申请日：1975-06-26

申请人： Hans Voigt ,  Gunther Rupp

发明人： Hans Voigt ,  Gunther Rupp

IPC分类号： H01L39/00 ,  G01N27/90 ,  G01R31/02 ,  G01R33/12

CPC分类号： G01R33/12 ,  G01N27/90 ,  G01R31/022 ,  G01R33/1246 ,  Y10S505/845 ,  Y10S505/872 ,  Y10T29/49004

摘要： A method and apparatus for the continuous, contactless testing of a long conductor which consists at least partially of superconductive material in which the conductor is moved, with the superconductive material in the superconducting state, through an external magnetic field which induces shielding currents in the superconductive material, while the magnetic field produced by these shielding currents is measured.

摘要翻译： 一种用于对长导体进行连续，非接触测试的方法和装置，所述长导体至少部分地由超导材料构成，其中导体被移动，超导材料处于超导状态，通过外部磁场，其引起超导中的屏蔽电流 同时测量由这些屏蔽电流产生的磁场。

公开(公告)号：US08788227B2

公开(公告)日：2014-07-22

申请号：US12997055

申请日：2010-07-28

申请人： Kyeong Dal Choi ,  Ji Kwang Lee ,  Woo Seok Kim ,  Chan Park ,  Byung Wook Han ,  Se Yeon Lee

发明人： Kyeong Dal Choi ,  Ji Kwang Lee ,  Woo Seok Kim ,  Chan Park ,  Byung Wook Han ,  Se Yeon Lee

IPC分类号： G01R27/00 ,  G01R33/12

CPC分类号： G01R33/1246 ,  G01N27/82 ,  G01R19/08

摘要： A method for measuring critical current density of superconductor wires according to the present invention is characterized in that it includes: (a) applying an external magnetic field to the superconductor wires, (b) measuring a magnetization loss of the superconductor wires according to the application of the external magnetic field, (c) normalizing the measured magnetization loss, and then calculating a fully-penetration magnetic field of the superconductor wires according to the normalized magnetization loss, (d) calculating a critical current density of the superconductor wires according to the calculated fully-penetration magnetic field. Therefore, the critical current density of parallel superconductor wires such as stacked superconductor wires may be measured without applying current to the superconductor wires directly.

摘要翻译： 根据本发明的用于测量超导线的临界电流密度的方法的特征在于其包括：（a）向超导体线施加外部磁场，（b）根据应用测量超导体线的磁损耗 ，（c）归一化所测量的磁化损耗，然后根据归一化的磁化损耗计算超导体线的完全穿透磁场，（d）计算超导体线的临界电流密度，根据 计算完全穿透磁场。 因此，可以在不直接向超导体电线施加电流的情况下测量平行超导体线如堆叠超导线的临界电流密度。

公开(公告)号：US20130293987A1

公开(公告)日：2013-11-07

申请号：US13850895

申请日：2013-03-26

申请人： Brookhaven Science Associates, LLC

发明人： Piyush Nanubhai Joshi

IPC分类号： G01R33/12 ,  H02H7/00

CPC分类号： G01R33/1238 ,  G01R33/1246 ,  H02H7/001 ,  Y02E40/68

摘要： A quench detection device (or method) is provided that receives real-time information of concurrently monitored electrical characteristics of a high temperature superconducting (HTS) device, or any superconducting material, device, or system including low temperature superconductors, during operation. The quench detection device determines whether an electrical threshold is satisfied based on the received real-time information. The quench detection device detects a quench condition if the electrical threshold remains satisfied over a predetermined period of time or a predetermined successive number of times. If a quench detection is detected, the quench detection device sends a signal to terminate the operation of the HTS device.

摘要翻译： 提供了一种在操作期间接收高温超导（HTS）器件或包括低温超导体的任何超导材料，器件或系统的同时监控的电气特性的实时信息的淬火检测装置（或方法）。 淬火检测装置基于所接收的实时信息来确定是否满足电阈值。 如果电气阈值在预定时间段或预定的连续次数上保持满足，则淬火检测装置检测淬火条件。 如果检测到淬火检测，则淬火检测装置发送信号以终止HTS装置的操作。

公开(公告)号：US08441247B2

公开(公告)日：2013-05-14

申请号：US12840173

申请日：2010-07-20

申请人： Hong-Soo Ha ,  Seok-ho Kim ,  Ki-deok Sim ,  Sang-su Oh ,  Min-won Park

发明人： Hong-Soo Ha ,  Seok-ho Kim ,  Ki-deok Sim ,  Sang-su Oh ,  Min-won Park

IPC分类号： G01N27/00 ,  G01R19/00

CPC分类号： G01R33/1246

摘要： The present invention relates to an apparatus and method for measuring the critical current of a superconducting tape. A continuous critical current measurement apparatus for measuring critical current of a superconducting tape while feeding a superconducting tape in a liquid nitrogen container includes wheel-type current terminals and wheel-type voltage terminals. The superconducting tape is continuously supplied and fed by a reel-to-reel device, and the critical current of the superconducting tape is measured in real time using the wheel-type current terminals and the wheel-type voltage terminals while the superconducting tape is fed at constant linear velocity in contact with the wheel-type current terminals and the wheel-type voltage terminals. Accordingly, current is applied using wheel-type current terminals and voltage is measured using wheel-type voltage terminals while a superconducting tape is continuously supplied by a reel-to-reel device, thus continuously measuring critical current without burning out the superconducting tape.

摘要翻译： 本发明涉及一种用于测量超导带的临界电流的装置和方法。 用于测量超导带的临界电流的连续临界电流测量装置，同时在液氮容器中馈送超导带包括轮式电流端子和车轮型电压端子。 超导带由卷盘到盘装置连续地供给和馈送，并且超导带被馈送时，使用轮式电流端子和车轮型电压端子实时地测量超导带的临界电流 以与轮型电流端子和车轮型电压端子接触的恒定线速度。 因此，使用轮式电流端子施加电流，并且使用轮式电压端子来测量电压，而超导带通过卷到盘设备连续供给，从而连续测量临界电流而不烧掉超导带。

公开(公告)号：US08405410B2

公开(公告)日：2013-03-26

申请号：US12616857

申请日：2009-11-12

申请人： Hiroshi Kawashima

发明人： Hiroshi Kawashima

IPC分类号： G01R27/08 ,  H02H7/00 ,  G01F23/24

CPC分类号： H02H7/001 ,  G01R31/024 ,  G01R33/1246 ,  H01F6/02 ,  Y02E40/68

摘要： The quench of the superconducting coil is desired to be detected early while suppressing the influences of the noise generated in charge and discharge of the superconducting coil. A superconducting coil quench detection apparatus detects the balance voltage of a bridge circuit formed by the superconducting coil and a resistor to output it as a quench detection signal for detecting the quench thereof. A signal indicating the hold period where the energy accumulated in the superconducting coil is held is generated. A signal included in the hold period is extracted from the quench detection signal. The quench of the superconducting coil is detected based on the extracted signal.

摘要翻译： 期望早期检测超导线圈的淬火，同时抑制在超导线圈的充电和放电中产生的噪声的影响。 超导线圈淬火检测装置检测由超导线圈形成的桥接电路的平衡电压和电阻器，作为用于检测其淬火的淬火检测信号输出。 产生表示保持在超导线圈中蓄积的能量的保持期间的信号。 从骤冷检测信号中提取包含在保持期间的信号。 基于提取的信号检测超导线圈的淬火。

公开(公告)号：US5218296A

公开(公告)日：1993-06-08

申请号：US832531

申请日：1992-02-07

申请人： Subhash L. Shinde ,  Thomas K. Worthington

发明人： Subhash L. Shinde ,  Thomas K. Worthington

IPC分类号： G01N27/72 ,  G01R33/12

CPC分类号： G01N27/72 ,  G01R33/1246 ,  Y10S505/726

摘要： Disclosed are apparatus and method for measuring a characteristic of a film comprised of a material that is a superconductor below a critical temperature. The apparatus includes a magnetic circuit for inducing an alternating magnetic flux at a localized region of a surface of the film. The circuit includes a magnetic core (42) having a gap (44) made therein and a drive winding (46) coupled thereto. A current source (50) is coupled to the drive winding for passing an alternating current therethrough for inducing an alternating magnetic flux within the gap. Measurement circuitry (54, 56) is responsive to a current induced within the film by an entry of the magnetic flux into the film. A processor (60) is coupled to the measurement circuitry and determines a critical current density of the superconducting film within the localized region. The measurement circuitry includes a sense winding (48) that is coupled to the core and detects a magnitude of an electrical signal induced in the sense winding by the alternating magnetic flux.

摘要翻译： 公开了用于测量由低于临界温度的超导体材料构成的薄膜的特性的装置和方法。 该装置包括用于在膜的表面的局部区域处诱导交变磁通的磁路。 该电路包括具有制造在其中的间隙（44）的磁芯（42）和与其耦合的驱动绕组（46）。 电流源（50）耦合到驱动绕组，用于使交流电流通过，用于在间隙内引起交变磁通。 测量电路（54,56）通过磁通进入薄膜来响应薄膜内感应的电流。 处理器（60）耦合到测量电路并且确定局部区域内超导膜的临界电流密度。 测量电路包括耦合到磁芯的检测绕组（48），并且通过交变磁通量检测在感测绕组中感应的电信号的大小。

公开(公告)号：US5134360A

公开(公告)日：1992-07-28

申请号：US670111

申请日：1991-03-15

申请人： Joe A. Martin ,  Robert C. Dye

发明人： Joe A. Martin ,  Robert C. Dye

IPC分类号： G01N27/04 ,  G01R31/00 ,  G01R33/12

CPC分类号： G01R33/1246 ,  G01N27/041 ,  G01R31/00 ,  Y10S505/843

摘要： An apparatus for the measurement of the critical current of a superconductive sample, e.g., a clad superconductive sample, the apparatus including a conductive coil, a means for maintaining the coil in proximity to a superconductive sample, an electrical connection means for passing a low amplitude alternating current through the coil, a cooling means for maintaining the superconductive sample at a preselected temperature, a means for passing a current through the superconductive sample, and, a means for monitoring reactance of the coil, is disclosed, together with a process of measuring the critical current of a superconductive material, e.g., a clad superconductive material, by placing a superconductive material into the vicinity of the conductive coil of such an apparatus, cooling the superconductive material to a preselected temperature, passing a low amplitude alternating current through the coil, the alternating current capable of generating a magnetic field sufficient to penetrate, e.g., any cladding, and to induce eddy currents in the superconductive material, passing a steadily increasing current through the superconductive material, the current characterized as having a different frequency than the alternating current, and, monitoring the reactance of the coil with a phase sensitive detector as the current passed through the superconductive material is steadily increased whereby critical current of the superconductive material can be observed as the point whereat a component of impedance deviates.

摘要翻译： 一种用于测量超导样品（例如包覆超导体样品）的临界电流的装置，该装置包括导电线圈，用于将线圈保持在超导样品附近的装置，用于通过低振幅的电连接装置 通过线圈的交流电流，用于将超导体样品保持在预选温度的冷却装置，用于使电流通过超导样品的装置和用于监测线圈的电抗的装置，以及测量的过程 通过将超导材料放置在这种设备的导电线圈附近，超导材料（例如包覆超导材料）的临界电流，将超导材料冷却至预选温度，使低振幅的交流电流通过线圈 ，能够产生足以穿透的磁场的交流电 例如，任何包层，并且在超导材料中诱发涡流，使稳定增加的电流通过超导材料，该电流的特征在于具有与交流电流不同的频率，并且监测线圈的电抗 通过超导材料的电流稳定地增加了相敏检测器，从而可以观察到超导材料的临界电流作为阻抗分量偏离的点。

公开(公告)号：US5030614A

公开(公告)日：1991-07-09

申请号：US402672

申请日：1989-09-05

申请人： Milton B. Hollander ,  William E. McKinley

发明人： Milton B. Hollander ,  William E. McKinley

IPC分类号： G01R33/12

CPC分类号： G01R33/1246 ,  Y10S505/704 ,  Y10S505/725 ,  Y10S505/727

摘要： A superconducting wire is produced by the surrounding of a superconductive material core with an intermediate compressible insulating layer and an outer malleable layer and then drawing said composite structure through a series of dies to reduce the diameter of the wire on the order of 400 to 10,000 times or by reducing the superconductive core material to the desired wire size by passing it through a series of dies to reduce the diameter of the wire on the order of 400 to 10,000 times and then coating the wire with a noncompressible insulating layer and then placing an outer malleable layer over the insulated wire and drawing this through dies to snuggly fit the outer layer onto the insulated wire. This wire's superconducting characteristics are not intended for carrying high levels of currents so the reduction of the available current carrying cross section by the introduction of the insulating layer is not of concern in the applications for the wire. Low and high temperature high level current-carrying superconductors lose their superconductivity with changes in their critical temperature and critical magnetic field. A loss in superconductivity in a high current-carrying superconductor can cause irreparable damage to the superconductor and its physical environment. Said superconducting wire when used in assembly with a high current-carrying superconductor provides a means for detecting changes in the critical temperature and critical magnetic field of the current-carrying superconductor before the superconducting properties are lost so that measures can be taken to correct the changes in the critical temperature and the critical magnetic field.

摘要翻译： 超导线由具有中间可压缩绝缘层和外部可延展层的超导材料芯的周围产生，然后通过一系列模具拉制所述复合结构，以将线的直径减小约400至10,000倍 或者通过将超导芯材料通过一系列模具将超导芯材料减少到所需的线材尺寸，以将线材的直径减小大约400至10,000倍，然后用不可压缩的绝缘层涂覆该线材，然后将外部 在绝缘电线上延伸，并将其通过模具拉紧，以将外层贴合到绝缘电线上。 该导线的超导特性不是用于承载高电流电流，因此通过引入绝缘层来减少可用的载流横截面在电线的应用中不是关心的。 低温和高温高电流载流超导体随着其临界温度和临界磁场的变化而失去其超导性。 高载流超导体的超导损耗可能会对超导体及其物理环境造成不可弥补的损害。 当与高载流超导体组装使用时，所述超导线提供在超导性能丢失之前检测载流超导体的临界温度和临界磁场变化的方法，以便采取措施来校正变化 在临界温度和临界磁场中。