[특허]Superconducting cables and methods of making the same

The Regents of the University of Colorado, a body corporate

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Superconducting cables and methods of making the same

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01L-039/14 H01B-012/08 H01L-039/24 H01L-039/18
출원번호	US-0580103 (2014-12-22)
등록번호	US-9767940 (2017-09-19)
발명자 / 주소	van der Laan, Daniel Cornelis
출원인 / 주소	The Regents of the University of Colorado, a body corporate
대리인 / 주소	Foley & Lardner LLP
인용정보	피인용 횟수 : 0 인용 특허 : 16

초록
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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.

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1. A superconducting cable comprising: a former;a plurality of superconducting tape conductors wound in a plurality of layers around the former in a helical fashion, each superconducting tape conductor having at least one superconducting layer, wherein each layer of superconducting tape conductors is arranged either over or under at least one other layer in the plurality of layers in a radial direction;at least one conductor of non-superconducting, conductive material wound: (a) between adjacent windings of at least one of the superconducting tape conductors in at least one layer of the superconducting tape conductors, or (b) between two of the layers of superconducting tape conductors, where the at least one layer comprises a plurality of layers of superconducting tape conductors; andsolder that is configured to be melted after the cable is assembled, the solder comprising (a) a layer of solder coated on at least one of the superconducting tape conductors such that the at least one superconducting tape conductor with the layer of solder is wound around the former, (b) a solder material wound between adjacent winds of the superconducting tape conductors, (c) a solder material arranged between at least two of the layers where the at least one layer comprises a plurality of layers, or (d) a layer of solder coated on the at least one conductor of non-superconducting, conductive material. 2. The superconducting cable of claim 1, where the former has an outer diameter of less than ten millimeters (10 mm). 3. The superconducting cable of claim 1, where the former is flexible. 4. The superconducting cable of claim 1, where the plurality of superconducting tape conductors are wound around the former with a gap between winds of at least two of the superconducting tape conductors. 5. The superconducting cable of claim 1, further comprising at least one electrically insulated, resistive heating wire wound around the former, for providing a quenching heat source. 6. The superconducting cable of claim 1, where the solder comprises the layer of solder coated on at least one of the superconducting tape conductors. 7. The superconducting cable of claim 1, where the solder comprises the solder material wound between adjacent winds of the superconducting tape conductors. 8. The superconducting cable of claim 1, where the solder comprises the solder material arranged between at least two of the layers of the superconducting tape conductors. 9. The superconducting cable of claim 1, where the solder comprises the layer of solder coated on the at least one conductor of non-superconducting, conductive material. 10. The superconducting cable of claim 1, where each layer of the superconducting tape conductors is wound in a different winding direction as an adjacent layer of the superconducting tape conductors. 11. The superconducting cable of claim 1, where each layer of the superconducting tape conductors is wound at a pitch angle that is different from a pitch angle of tape conductors wound in an adjacent layer. 12. The superconducting cable of claim 1, where the former has a cross-section shape that is oval or rectangular with rounded corners, with the radius of the corners being less than five millimeters (5 mm). 13. The superconducting cable of claim 1, where at least one insulation layer is provided between adjacent layers of superconducting tape conductors. 14. The superconducting cable of claim 1, where at least one of superconducting tape conductors is insulated. 15. A superconducting cable comprising: a former;a plurality of superconducting tape conductors wound in at least one layer around the former, each superconducting tape conductor having at least one superconducting layer;at least one conductor of non-superconducting, conductive material wound: (a) between adjacent windings of at least one of the superconducting tape conductors in at least one layer of the superconducting tape conductors, or (b) between two of the layers of superconducting tape conductors where the at least one layer comprises a plurality of layers of superconducting tape conductors; anda layer of solder coated on the at least one conductor of non-superconducting, conductive material, the layer of solder configured to be melted after the cable is assembled. 16. The superconducting cable of claim 15, further comprising at least one electrically insulated, resistive heating wire wound around the former, for providing a quenching heat source. 17. The superconducting cable of claim 15, where each layer of the superconducting tape conductors is wound in a different winding direction as an adjacent layer of the superconducting tape conductors. 18. The superconducting cable of claim 15, where each layer of the superconducting tape conductors is wound at a pitch angle that is different from a pitch angle of tape conductors wound in an adjacent layer. 19. A method of making a superconducting cable comprising: providing a former;winding a plurality of superconducting tape conductors in a plurality of layers around the former in a helical fashion, each superconducting tape conductor having at least one superconducting layer, wherein each layer of superconducting tape conductors is arranged either over or under at least one other layer in the plurality of layers in a radial direction;winding at least one conductor of non-superconducting, conductive material either: (a) between adjacent windings of at least one of the superconducting tape conductors in at least one layer of the superconducting tape conductors, or (b) between two of the layers of superconducting tape conductors where the at least one layer comprises a plurality of layers of superconducting tape conductors; andproviding solder that is configured to be melted after the cable is assembled, wherein providing the solder comprises (a) coating a layer of solder on at least one of the superconducting tape conductors such that the at least one superconducting tape conductor with the layer of solder is wound around the former, (b) winding a solder material between adjacent winds of the superconducting tape conductors, (c) arranging a solder material between at least two of the layers where the at least one layer comprises a plurality of layers, or (d) coating a layer of solder on the at least one conductor of non-superconducting, conductive material. 20. A multi-phase cable comprising a bundle formed of a plurality of superconducting cables of claim 1, each superconducting cable being a single-phase cable associated with an electrical phase that is different from the electrical phase associated with each other superconducting cable in the plurality of superconducting cables. 21. A multi-phase cable comprising a bundle formed of a plurality of superconducting cables of claim 1, each superconducting cable being a single-phase cable, wherein at least two of the superconducting cables are associated with each electrical phase of the multi-phase cable. 22. The superconducting cable of claim 1, wherein the plurality of superconducting tape conductors wound around the former are arranged in multiple phases, and wherein each phase is electrically insulated from each other phase of the multiple phases. 23. A multi-phase cable comprising a bundle formed of a plurality of superconducting cables of claim 22, wherein a first phase of each of the superconducting cables are electrically coupled together, and wherein a second phase of each of the superconducting cables are electrically coupled together.

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Superconducting cables and methods of making the same

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