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Compound winding made of Bi-based and Y-based high-temperature superconducting tapes

A high-temperature superconducting strip and high-voltage winding technology, which is applied to superconducting magnets/coils, magnetic objects, electrical components, etc., can solve the problem of uneven current distribution of multiple series and parallel windings, and achieve less critical current drop and cost-effective Improved effect

Inactive Publication Date: 2015-03-25
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention will use Bi-series and Y-series high-temperature superconducting tapes of different specifications to wind double-cake structure windings and cylindrical windings, thereby solving the problem of uneven current distribution of multiple series-parallel windings

Method used

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  • Compound winding made of Bi-based and Y-based high-temperature superconducting tapes
  • Compound winding made of Bi-based and Y-based high-temperature superconducting tapes
  • Compound winding made of Bi-based and Y-based high-temperature superconducting tapes

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1 is a combined winding structure using Bi-based and Y-based high-temperature superconducting tapes, using multiple double-cake coils connected in parallel, which can be applied to superconducting reactors, superconducting energy storage magnets and superconducting strong-field magnets, etc. multiple fields. like figure 1 As shown, the combined winding structure consists of a Bi-based superconducting double-cake coil 1, a Y-based superconducting double-cake coil 2, a coil bobbin 3, a coil axial spacing layer 4, a coil upper support plate 5, and a coil lower support plate 6 , coil fastening screw 7, low temperature Dewar cylinder 8, low temperature Dewar upper cover 9 and pull rod 10. The Bi-based superconducting double-cake coil 1 and the Y-based superconducting double-cake coil 2 are wound outside the coil frame 3 , and the double-cake superconducting coils are separated by a coil axial spacer layer 4 . The coil upper support plate 5 and the coil lower suppor...

Embodiment 2

[0023] Embodiment 2 is a combined winding structure using multiple cylindrical structure coils connected in parallel, which is wound with Bi-based and Y-based high-temperature superconducting tapes, and can be applied to superconducting reactors, superconducting energy storage magnets and superconducting strong-field magnets and many other fields. like figure 2 As shown, the combined winding structure consists of Bi-based superconducting cylindrical coil 1, Y-based superconducting cylindrical coil 2, coil bobbin 3, coil axial spacing layer 4, coil upper support plate 5, and coil lower support plate 6 , coil fastening screw 7, low temperature Dewar cylinder 8, low temperature Dewar upper cover 9 and pull rod 10. The Bi-based superconducting cylindrical coil 1 and the Y-based superconducting cylindrical coil 2 are wound outside the coil frame 3 , and the superconducting cylindrical coils are separated by a coil axial spacer layer 4 . The coil upper support plate 5 and the coi...

Embodiment 3

[0025] Embodiment 3 is a combined winding structure made of Bi-based and Y-based high-temperature superconducting tapes applied to superconducting transformers. like image 3 As shown, the superconducting transformer is composed of a Bi-based superconducting cylindrical coil 1g and a Y-based superconducting cylindrical coil 2g applied to the high-voltage winding, a Bi-based superconducting double-cake coil 1d and a Y-based superconducting coil applied to the low-voltage winding. Superconducting double pie coil 2d, high-voltage winding frame 3g and low-voltage winding frame 3d, high-voltage winding coil axial spacer layer 4g and low-voltage winding coil axial spacer layer 4d, winding upper support plate 5, winding lower support plate 6, winding tight Solid screw rod 7, low temperature Dewar barrel 8, low temperature Dewar upper cover plate 9, tie rod 10, transformer iron core 11 and low temperature Dewar pad 12 constitute. The high-voltage winding composed of the Bi-based supe...

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Abstract

A compound winding made of Bi-based and Y-based high-temperature superconducting tapes comprises a Bi-based superconducting coil (1), a Y-based superconducting coil (2), a superconducting coil bobbin (3), axial superconducting coil partitions (4), an upper coil support board (5), a lower coil support board (6) and coil-fixing screws (7). The Bi-based superconducting coil (1) is located in the middle of the compound winding, and the Y-based superconducting coil (2) is located on the end of the compound winding; and the compound winding is mounted in a low-temperature dewar comprising a low-temperature dewar barrel (8) and a low-temperature dewar top cover board (9), and is cooled by directly evaporated liquid nitrogen or the forced flow circulation of liquid nitrogen coupled with a refrigerator. The compound winding is mounted on the low-temperature dewar top cover board (9) through tie rods (10). The compound winding utilizes the characteristics of the Bi-based high-temperature superconducting tape, such as high self-field critical current, and the characteristics of the Y-based high-temperature superconducting tape, such as little critical current decrease in the external field, and can be made into an alternating-current winding and a direct-current winding.

Description

technical field [0001] The invention relates to a superconducting magnet wound by using two different types of superconducting tapes of Bi system and Y system. Background technique [0002] High-temperature superconducting magnets used in high-temperature superconducting transformers, reactors and energy storage magnets in power systems need to have the ability to withstand high voltage and high current. For high-temperature superconducting magnets that need to withstand large currents, since it is difficult to use multiple parallel transposed wires to make spiral windings, it is usually necessary to use a parallel structure composed of multiple double-cake windings or cylindrical windings. When used in AC applications, multiple windings are connected in parallel. Due to the different positions of the magnetic field of each winding, the self-inductance and mutual inductance of each winding are different, resulting in differences in the current distribution of each winding; a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F6/00H01F6/06H01F6/04
Inventor 邱清泉戴少涛张志丰张京业肖立业
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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