The invention relates to power systems. More particularly, the invention relates to electric vehicle battery charging systems. In the invention a superconducting conductor is used to charge the electric car battery, resulting in a short charging time.

According to an embodiment, a superconducting wire includes a substrate, an intermediate layer formed on the substrate, a superconducting layer formed on the intermediate layer, and a protective layer formed on the superconducting layer. The superconducting layer has a first portion, a second portion, and a third portion between the first portion and the second portion in the longitudinal direction of the superconducting wire. The protective layer on the third portion is at least partially removed.

According to an embodiment, a superconducting wire includes a substrate, an intermediate layer formed on the substrate, a superconducting layer formed on the intermediate layer, and a protective layer formed on the superconducting layer. The superconducting layer has a first portion, a second portion, and a third portion between the first portion and the second portion in the longitudinal direction of the superconducting wire. The protective layer on the third portion is at least partially removed.

The present disclosure relates generally to wires and more particularly to textured powder wires containing nanoscale metallic silver powder. The invention presents an improvement of the process of making compressed cores of textured-powder high-temperature superconductor previously using the micaceous high-temperature superconductor Bi-2212. Embodiments of the claimed methods are useful with the micaceous high-temperature superconductors, notably Bi2Sr2CaCu2O8+x (Bi-2212) and Bi2Sr2Ca2Cu3O10+x (Bi-2223) and rare earth barium copper oxide (REBCO).

The present disclosure relates generally to wires and more particularly to textured powder wires containing nanoscale metallic silver powder. The invention presents an improvement of the process of making compressed cores of textured-powder high-temperature superconductor previously using the micaceous high-temperature superconductor Bi-2212. Embodiments of the claimed methods are useful with the micaceous high-temperature superconductors, notably Bi2Sr2CaCu2O8+x (Bi-2212) and Bi2Sr2Ca2Cu3O10+x (Bi-2223) and rare earth barium copper oxide (REBCO).

It is an object of the present invention to provide an MgB.sub.2 wire helping to achieve compatibility between the ease with which superconducting connection is effected and thermal stability. A superconducting wire according to the present invention includes: an elemental wire formed of MgB.sub.2; and a first metal not reacting with Mg. In a section orthogonal to the longitudinal direction of the superconducting wire, the region extending from the center of the superconducting wire to the installation position of the elemental wire is formed by the elemental wire and the first metal.

It is an object of the present invention to provide an MgB.sub.2 wire helping to achieve compatibility between the ease with which superconducting connection is effected and thermal stability. A superconducting wire according to the present invention includes: an elemental wire formed of MgB.sub.2; and a first metal not reacting with Mg. In a section orthogonal to the longitudinal direction of the superconducting wire, the region extending from the center of the superconducting wire to the installation position of the elemental wire is formed by the elemental wire and the first metal.

The present invention is a superconducting wire including: a wire formed of a superconducting material; and a superconducting stabilization material disposed in contact with the wire, in which the superconducting stabilization material is formed of a copper material which contains: one or more types of additive elements selected from Ca, Sr, Ba, and rare earth elements in a total of 3 ppm by mass to 400 ppm by mass; a balance being Cu and inevitable impurities, and in which a total concentration of the inevitable impurities excluding O, H, C, N, and S which are gas components is 5 ppm by mass to 100 ppm by mass.

The present invention is a superconducting wire including: a wire formed of a superconducting material; and a superconducting stabilization material disposed in contact with the wire, in which the superconducting stabilization material is formed of a copper material which contains: one or more types of additive elements selected from Ca, Sr, Ba, and rare earth elements in a total of 3 ppm by mass to 400 ppm by mass; a balance being Cu and inevitable impurities, and in which a total concentration of the inevitable impurities excluding O, H, C, N, and S which are gas components is 5 ppm by mass to 100 ppm by mass.

Superconductor cable or superconductor cable-in-conduit-conductor having a plurality of generally flat, ribbon-shaped superconductor tapes assembled to form a single stack or multiple stacks or a plurality of round or nearly round superconducting wires assembled to form a single bundle or multiple bundles. The superconductor cable or superconductor cable-in-conduit-conductor has at least one or more clocking features that identify its angular position with respect to the background magnetic field. Multiple types and geometries of superconductor cables and superconductor cable-in-conduit-conductor are disclosed. Superconductor power cable disposed within and separated from an electrical insulator with a space passing cryo-coolant between the superconducting cable and insulator is also disclosed.