Superconducting wire, superconducting conductor, and superconducting cable

Abstract

The invention provides a superconducting wire rod, a superconductor, and a superconductive cable processed to be low in AC loss, capable of preventing low performance caused by unavoidable factors produced in manufacture. The superconducting wire rod is formed in order of an intermediate layer formed of insulating material or materials with high resistance, a superconductive thin film and a stabilizing film, and has a plurality of parallel cuts which are formed along the lengthwise direction of the rod for preventing the low performance caused by unavoidable factors, and the wire rod can be folded in width at the cut.

Description

technical field [0001] The present invention relates to a superconductor wire, a superconductor conductor and a superconductor cable, in particular to a processed superconductor wire and superconductor capable of avoiding performance degradation due to unavoidable obstruction factors during manufacture, low AC loss, and Conductor and superconductor cables. Background technique [0002] Generally, Bi (bismuth)-based silver sheath superconductor wires and RE-based thin-film superconductor wires are known as wire materials for high-temperature superconductor cables. The Bi-based silver-coated superconductor wire has the problem that the critical current density decreases sharply after an external magnetic field is applied. In Japanese Unexamined Patent Publication No. 9-190727, it is described that in a superconductor cable using a Bi-based silver-coated superconductor wire, a plurality of strips of Bi-based silver having the same cross-sectional size are placed on the outer p...

AI Technical Summary

Problems solved by technology

[0006] In addition, since the current transport characteristics of RE-based thin-film superconductor wires are significantly affected by current disturbance factors such as weak bonds in the crystal interface or crystal defects, it is known that the current path (pass) is not uniform, and there is a penetrating current.

In particular, since there is an obstacle in the vertical direction to the flow direction of the current, there is a problem of AC loss due to the generation of local voltage

[0007] Here, in order to improve the superconductor characteristics by one level, it is necessary to avoid performance degradation due to unavoidable hindering factors involved in the conventional manufacturing methods of thin-film superconductor wires.

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