Other

Fujikura Limited

Fuji Electric Systems Co. Ltd.

Kyushu University

Railway Technical Research Institute

International Superconductivity Technology Center, the Juridical Foundation

National Institute of Advanced Industrial Science and Technology

Kyushu Electric Power Co., Inc.

Superconductivity Research Laboratory, International Superconductivity Technology Center, the Juridical Foundation

International Superconductivity Technology Center, Juridical Foundation

Fuji Electric Co., Ltd.

Funaki, Kazuo

Kisu, Takanobu

Iwakuma, Masataka

Masataka Iwakuma

Teruo Izumi

Yuh Shiohara

Hiroshi Fuji

Akira Tomioka

Kenji Suzuki

Kazuo Funaki

Toshio Uede

Takanobu Kisu

Junko Matsuda

Saburo Hoshi

Masayuki Konno

Hidemi Hayashi

Yuh The Juridical Foundation Shiohara

Teruo The Juridical Foundation Izumi

A Fuji El Advanced Technology Co Ltd Tomioka

Toshio Fuji Electric Systemes Co Ltd Uede

Hiroshi The Juridical Foundation Fuji

According to the present invention, there is provided a superconducting induction rotating machine 1 that has a stator for which a plurality of superconducting armature coils are placed along the circumferential direction, and a rotor provided rotatably around a central axis line in a state opposing the stator with a predetermined gap interposed, wherein the rotor is configured of a complex consisting of a cylindrical electrically conductive material layer disposed on a side opposing the stator, and a magnetic material layer disposed on an opposite side to the side opposing the stator of the electrically conductive material layer, and wherein the superconducting induction rotating machine 1 rotationally drives the rotor by generating a rotational torque in the rotor with a rotating magnetic field created by the armature coils while the superconducting armature coils disposed on the stator being cooled to a superconducting state.

Superconducting induction rotating machine, and superconducting drive force generating system using said superconducting induction rotating machine

The present invention is configured such that, in a low AC loss oxide superconductor constituted by providing an oxide superconducting layeron a substrate, said oxide superconducting layeris separated into a plurality of filament conductorsin parallel to the lengthwise direction of said substrateby dividing groovesplurally formed in the widthwise direction of said substrate, and a high-resistance oxideis formed in said dividing grooves. Because of the invention, it is possible to increase the insulation properties of individually divided mated filament conductors, and to obtain an oxide superconductor that has low AC loss.

Low alternating-current loss oxide superconductor and fabricating method thereof

Tape-shaped superconducting wires, and a superconducting coil formed from said wires, wherein a plurality of electrically separated superconducting film parts, each having a rectangular cross section and arranged in parallel, form parallel conductors, providing superconducting wires capable of containing losses incurred in the presence of alternating current (A/C). A superconducting coil is made by winding the superconducting wires, wherein the coil structure contains at least a part wherein perpendicular interlinkage magnetic fluxes acting among conductor elements of the parallel conductors by the distribution of magnetic fields generated by the superconducting coils cancel mutually in order to contain circulating current within the wires and to make shunt current uniform, thereby providing a low-loss A/C superconducting coil.

Superconducting wire and superconducting coil made therewith

Superconducting wire and superconducting coil employing it

In one embodiment, a superconducting coil includes a tertiary parallel superconductor unit () composed of superposed in parallel a plurality of layers of secondary parallel superconductor units (). The layers of secondary parallel superconductor units include a plurality of superconductor elements () arranged in parallel along the axial direction of the coil, forming a superconducting conductor unit. The tertiary parallel superconductor unit is wound on a bobbin (). In another embodiment, the superconducting coil includes one or more layers of the secondary parallel superconductor unit wound on the bobbin. In both embodiments, the secondary parallel superconductor unit can include at least one non-superconducting conductor element (). The layer of the secondary parallel superconductor unit forming an outer side of the tertiary parallel superconductor unit can include at least one non-superconducting conductor element. A layer of non-superconducting conducting or high-strength insulating supporting member () of electromagnetic force can be formed on the outer side of the tertiary parallel superconductor unit.

Superconducting coil

Growing community of inventors

Fukuoka-ken, Japan

Masataka Iwakuma