Design and testing of a high temperature superconducting current lead

Wu, Jiang; Dederer, J. T.; Eckels, P. W.; Singh, Shweta; Hull, J.R.; Poeppel, R.B.; Youngdahl, C. A.; Singh, J. P.; Lanagan, Michael T.

doi:10.1109/20.133559

Cited by 55 publications

(4 citation statements)

References 5 publications

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“…HTS current leads can be made either from bulk [72] or from wire HTSs [73]. In the latter case, the silver sheath of the BSSCO superconductor is composed on a silver alloy to reduce the thermal conductivity of the sheath.…”

Section: Current Leadsmentioning

confidence: 99%

Applications of high-temperature superconductors in power technology

Hull¹

2003

Rep. Prog. Phys.

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Since the discovery of the first high-temperature superconductors (HTSs) in the late 1980s, many materials and families of materials have been discovered that exhibit superconductivity at temperatures well above 20 K. Of these, several families of HTSs have been developed for use in electrical power applications. Demonstration of devices such as motors, generators, transmission lines, transformers, fault-current limiters, and flywheels in which HTSs and bulk HTSs have been used has proceeded to ever larger scales. First-generation wire, made from bismuth-based copper oxides, was used in many demonstrations. The rapid development of second-generation wire, made by depositing thin films of yttrium-based copper oxide on metallic substrates, is expected to further accelerate commercial applications. Bulk HTSs, in which large single-grain crystals are used as basic magnetic components, have also been developed and have potential for electrical power applications.

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Section: Current Leadsmentioning

confidence: 99%

Applications of high-temperature superconductors in power technology

Hull¹

2003

Rep. Prog. Phys.

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“…[1][2][3][4][5] We have been studying a superconducting bushing apparatus which is composed of long and slender HTS rods or pipes for the current leads and for the external magnetic shielding. 4,5 Abe et al in our group developed a simple fabricating method of fine HTS rods 6 or pipes 7 in the Bi-SrCa-Cu-O ͑BSCCO͒ system by using a glass-ceramic processing, which involves casting of the melt in low viscosity and reheating the forming product.…”

Section: Nagoya Institute Of Technology Gokiso-cho Showa-ku Nagoyamentioning

confidence: 99%

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Kasuga

Nakamura

Abe

et al. 1995

Applied Physics Letters

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Superconducting glass-ceramics in the Bi–Sr–Ca–Cu–O (BSCCO) system were found to be successfully joined together by welding with an LNG-O2 flame. Two edge portions of the glass- ceramics to be joined were set in close contact to each other and melted by the high-temperature flame. After the welding, the joined portion was annealed with a soft flame, so that no crack formed in the product. The directly joined product was converted into a superconductor with Tc≂90 K by a postheating at ∼830 °C. Its critical current density Jc, was almost the same as the of the original glass-ceramic. This technique is very important for fabrication of large-sized superconducting apparatus such as current leads or magnetic shields.

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“…Westinghouse has demonstrated a 40% reduction in heat leak using high T, leads. [31] Initial modeling of high T, leads being developed at DTRC indicates that for a 10 kA lead, heat leak to a 4.2 K bath will be reduced by approximately an order of magnitude relative to optimized vapor cooled leads. safety value.…”

Section: Heat Leaksmentioning

confidence: 99%

Applications of Superconductivity to Very Shallow Water Mine Sweeping

Golda

Walters

Green

1992

Naval Engineers Journal

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Recent experiences in the Persian Gulf have clearly demonstrated the need for improved mine sweeping, or mine counter‐measures (MCM), to support amphibious operations. Characteristics of MCM systems currently used to counter magnetic influence mines restrict sweep rates, limit the ability to accurately simulate a ship's magnetic signature, and require a minimum water depth. Advances in superconducting technology over the last twenty years have significantly increased the feasibility of superconducting mine countermeasures (SCMCM) for magnetic influence mines. An SCMCM system would be small, light, and simple compared to currently deployed MCM systems. Superconducting magnets could be fabricated in steady state configurations or configurations that would significantly improve the ability to simulate non‐symmetric, time‐varying magnetic signatures of ships. SCMCM systems could be deployed from either surface or airborne platforms. An airborne system would protect the magnet from blast damage, permit the highest sweep rates, and allow unrestricted sweeping over entire amphibious objective areas, including the surf. A light weight SCMCM system would permit use of additional airborne platforms which may include remotely piloted airborne vehicles. Remotely piloted surface or airborne vehicles would totally eliminate risks to personnel. An SCMCM system could be demonstrated immediately utilizing existing technology and may offer significant advantages over existing MCM systems used to counter magnetic influence mines in very shallow water.

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Design and testing of a high temperature superconducting current lead

Cited by 55 publications

References 5 publications

Applications of high-temperature superconductors in power technology

Applications of high-temperature superconductors in power technology

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Applications of Superconductivity to Very Shallow Water Mine Sweeping

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