Low alternating current (ac) loss superconducting coils
First Claim
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1. A low alternating current loss superconducting coil comprising a superconducting tape wrapped around a longitudinally extending former, such that the tape completely covers the longitudinal surface of the former.
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Abstract
The present invention relates to high-temperature low alternating current (AC) loss superconducting coil (110A-C), to methods of fabricating such superconducting coils (110A-C) and to devices which utilize high temperature superconductor [HTS] tape coils such as transformer, motors, generators, etc.
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19 Claims
- 1. A low alternating current loss superconducting coil comprising a superconducting tape wrapped around a longitudinally extending former, such that the tape completely covers the longitudinal surface of the former.
- 7. A low alternating current loss superconducting coil comprising a plurality of superconductor tapes, a portion of such tapes being individually positioned in a first layer around a longitudinal axis and extending longitudinally with such axis, gaps being present between the superconductive material in adjacent tapes of such first layer, and at least one second layer formed of a portion of such plurality of tapes each individually positioned in a second layer around a longitudinal axis and extending longitudinally with such axis, gaps being present between superconductive material in adjacent tapes of the at least one second layer, the superconductive material of the at least one second layer overlapping the gaps in the first layer.
- 10. A low alternating current loss superconducting coil, comprising a plurality of superconductor tapes, each tape being individually positioned in a first layer around a longitudinal axis and extending longitudinally with said axis, each tape in being located between two immediately adjacent tapes, one lateral edge of each tape underlapping one associated adjacent tape and the other lateral edge of each said tape overlapping the other associated adjacent tape, such that at least a minor portion of the superconductive part of the superconductor tape under or overlaps an associated adjacent tape.
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12. A low alternating current loss producing superconductor coil comprising HTS superconducting tape wrapped in a gap free lapped configuration on an annular former.
- 13. A method of preparing a low alternating current loss superconducting coil comprising wrapping a cylindrical former section with at least one superconductor, such superconductor being positioned around the longitudinal axis of such former such that at least 1% of each winding of such superconductor around such former overlaps an associated adjacent winding.
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15. A method of fabricating low current loss superconducting coils comprising winding a coil of superconducting tape around a former, where the superconducting coil comprises a plurality of superconductor tapes, individually positioning each tape in a first layer around a longitudinal axis and extending longitudinally with said axis, locating each tape between two immediately adjacent tapes, one lateral edge of each tape underlapping one associated adjacent tape and the other lateral edge of each said tape overlapping the other associated adjacent tape, such that at least a minor portion of the superconductive part of the superconductor tape under or overlaps an associated adjacent tape.
- 16. An alternate current handling electrical device containing a low alternating current loss superconducting coil, such coil comprising a plurality of superconductor tapes, each tape being individually positioned in a first layer around a longitudinal axis and extending longitudinally with said axis, each tape in being located between two immediately adjacent tapes, one lateral edge of each tape underlapping one associated adjacent tape and the other lateral edge of each said tape overlapping the other associated adjacent tape, such that at least a minor portion of the superconductive part of the superconductor tape under or overlaps an associated adjacent tape.
- 18. An alternate current handling electrical device containing a low alternating current loss superconducting coil, such coil comprising a plurality of superconductor tapes, a portion of such tapes being individually positioned in a first layer around a longitudinal axis and extending longitudinally with such axis, gaps being present between the superconductive material in adjacent tapes of such first layer, and at least one second layer formed of a portion of such plurality of tapes each individually positioned in a second layer around a longitudinal axis and extending longitudinally with such axis, gaps being present between superconductive material in adjacent tapes of the at least one second layer, the superconductive material of the at least one second layer overlapping the gaps in the first layer.
Specification