Superconducting current limiting dipole, comprising at least four superconducting cables

Patent metadata

Field	Value
Publication number	US-11961663-B2
Application number	US-201816955931-A
Country	US
Kind code	B2
Filing date	Dec 12, 2018
Priority date	Dec 22, 2017
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A superconducting current limiting dipole (L 6 ), comprising a superconducting conductor (F 6 ) wound so as to form a two-wire coil extending in a single plane, a layer of insulator (E 1 to E 11 , H 1 ) being arranged between two turns of said coil. The superconducting conductor (C 1 to C 6 ) consists of at least four separate superconducting cables (C 1 to C 6 ) wound in parallel and arranged in at least two pairs, each of the pairs being formed by two of said superconducting cables (C 1 to C 6 ) that are electrically connected to one another in a first connection area, and, in a second connection area, one of the superconducting cables of one pair is electrically connected to one of the superconducting cables of the other pair, the other superconducting cable of each pair being connected to an electrical connection terminal (T 1 , T 2 ) or to an additional pair.

First claim

The invention claimed is:

1. A superconducting current limiting dipole (L 1 to L 15 ), two terminals of which are formed by a first electrical connection terminal (T 1 ) and a second electrical connection terminal (T 2 ), the current limiting dipole comprising:
a superconducting conductor (F 1 to F 15 ) wound so as to form a two-wire coil extending in a single plane,
a layer of insulator (E 1 to E 11 , H 1 ) being arranged between two turns of said coil,
said superconducting conductor (F 1 to F 15 ) comprises at least four separate superconducting cables (C 1 to C 12 ) wound in parallel and arranged in at least two pairs, each of the pairs being formed of two of said superconducting cables (C 1 to C 12 ), the superconducting cables (C 1 to C 12 ) being connected to one another so that the superconducting conductor extends in at least two outward and return paths between a periphery and a center of the coil while connecting the first electrical connection terminal (T 1 ) to the second electrical connection terminal (T 2 ).

2. The current limiting dipole as claimed in claim 1 , wherein each of the pairs is formed of a first and a second superconducting cable (C 1 to C 12 ) that are electrically connected to one another in a first connection area and in that, in a second connection area, the first superconducting cable of each pair is electrically connected to one of the superconducting cables of another pair, the second superconducting cable of each pair being connected to an electrical connection terminal (T 1 , T 2 ) or to one of the superconducting cables of another pair, one of the connection areas being the center of the coil and the other of the connection areas being the periphery of the coil.

3. The current limiting dipole as claimed in claim 2 , wherein the first connection area is located at the center of the coil, and in that the second connection area is located at the periphery of the coil.

4. The current limiting dipole as claimed in claim 2 , wherein the first connection area is located at the periphery of the coil, and in that the second connection area is located at the center of the coil.

5. The current limiting dipole as claimed in claim 3 further comprises four superconducting cables (C 1 to C 4 ) arranged in two pairs, two bridging loops (P 1 , P 2 ) in a first connection area, a bridging loop (B 1 ) in a second connection area, and two connection terminals (T 1 , T 2 ), the first connection area and the second connection area of the coil being chosen from among the periphery and the center of the coil, the bundle layer of insulator (H 1 ) being located between two superconducting cables that are each connected to a connection terminal (T 1 , T 2 ).

6. The current limiting dipole as claimed in claim 3 further comprises six superconducting cables (C 1 to C 6 ) arranged in three pairs, three bridging loops (P 1 to P 3 ) in a first connection area, two bridging loops (B 1 , B 2 ) in a second connection area, and two connection terminals (T 1 , T 2 ), the first connection area and the second connection area of the coil being chosen from among the periphery and the center of the coil, the bundle layer of insulator (H 1 ) being located between two superconducting cables that are each connected to a connection terminal (T 1 , T 2 ).

7. The current limiting dipole as claimed in claim 3 further comprises eight superconducting cables (C 1 to C 8 ) arranged in four pairs, four bridging loops (P 1 to P 4 ) in a first connection area, three bridging loops (B 1 to B 3 ) in a second connection area, and two connection terminals (T 1 , T 2 ), the first connection area and the second connection area of the coil being chosen from among the periphery and the center of the coil, the bundle layer of insulator (H 1 ) being located between two superconducting cables that are each connected to a connection terminal (T 1 , T 2 ).

8. The current limiting dipole as claimed in claim 1 , wherein the superconducting cables (C 1 to C 12 ) are connected to one another at the center of the coil, so as to form said pairs, by bridging loops (P 1 to P 6 ).

9. The current limiting dipole as claimed in claim 8 , wherein-said bridging loops (P 1 to P 6 ) are arranged side by side.

10. The current limiting dipole as claimed in claim 8 , wherein said bridging loops (P 1 to P 6 ) are distributed over an inner contour of the coil.

11. The current limiting dipole as claimed in claim 1 , wherein the superconducting conductor comprises of 2N superconducting cables arranged in N pairs, N bridging loops in a first connection area of the coil and N−1 bridging loops in a second connection area of the coil, the first connection area and the second connection area of the coil being chosen from among the periphery and the center of the coil, N being greater than or equal to 2.

12. The current limiting dipole as claimed in claim 11 , wherein the superconducting conductor comprises N bridging loops at the periphery of the coil, respectively at the center of the coil, and N−1 bridging loops at the center of the coil, respectively at the periphery of the coil.

13. The current limiting dipole as claimed in claim 11 , wherein the superconducting conductor (F 1 to F 15 ) consists of 2N superconducting cables (C 1 to C 12 ) arranged in N pairs, N bridging loops (P 1 to P 6 ) at the center of the coil and N−1 bridging loops (B 1 to B 3 ) at the periphery of the coil.

14. The current limiting dipole as claimed in claim 11 , wherein the superconducting conductor consists of 2N superconducting cables arranged in N pairs, N−1 bridging loops at the center of the coil and N bridging loops at the periphery of the coil.

15. The current limiting dipole as claimed in claim 13 , wherein the superconducting conductor (F 1 , F 3 , F 4 ) consists of four superconducting cables (C 1 to C 4 ) arranged in two pairs, two bridging loops (P 1 , P 2 ) at the center of the coil and one bridging loop (B 1 ) at the periphery of the coil.

16. The current limiting dipole as claimed in claim 15 , wherein the two bridging loops (P 1 , P 2 ) at the center of the coil are adjacent, and in that the bridging loop (B 1 ) at the periphery of the coil is located between the two connection terminals (T 1 , T 2 ).

17. The current limiting dipole as claimed in claim 16 , wherein, within the coil, between the superconducting cable (C 4 ) connected to one connection terminal (T 2 ) and an adjacent superconducting cable (C 1 ) that is connected to the other connection terminal (T 1 ), a layer of insulator (H 1 ) has a thickness greater than other layers of insulator (E 1 to E 3 ).

18. The current limiting dipole as claimed in claim 15 , wherein the two bridging loops (P 1 , P 2 ) at the center of the coil are adjacent, and in that the bridging loop (B 1 ) at the periphery of the coil bypasses a connection terminal (T 1 ).

19. The current limiting dipole as claimed in claim 15 , wherein the two bridging loops (P 1 , P 2 ) at the center of the coil are concentric, and in that the bridging loop (B 1 ) at the periphery of the coil bypasses a connection terminal (T 1 ).

20. The current limiting dipole as claimed in claim 13 , wherein the superconducting conductor (F 5 , F 6 , F 7 ) consists of six superconducting cables (C 1 to C 6 ) arranged in three pairs, three bridging loops (P 1 , P 2 , P 3 ) at the center of the coil and two bridging loops (B 1 , B 2 ) at the periphery of the coil.

21. The current limiting dipole as claimed in claim 20 , wherein the three bridging loops

Assignees

• Inst Supergrid
• Inst Polytechnique Grenoble

Inventors

• Legendre Pierre
• Tixador Pascal

Classifications

• H01F6/06 Primary

  Coils, e.g. winding, insulating, terminating or casing arrangements therefor · CPC title

• H01F27/2823

  Wires (H01F27/2866 takes precedence) · CPC title

• H01F27/2871

  Pancake coils · CPC title

• H01F27/323

  Insulation between winding turns, between winding layers · CPC title

• H10N60/30

  Devices switchable between superconducting and normal states · CPC title