Fractional-slot high-temperature superconducting generator stator

Abstract

The invention relates to a fractional-slot high-temperature superconducting generator stator. A superconducting motor stator iron core device is arranged and is composed of a superconducting wire coil, a stator iron core and a baffle, wherein the stator iron core is provided with an open slot and parallel teeth, the superconducting wire coil is arranged in the open slot, and the superconducting wire coil is fixedly connected with the stator iron core through the baffle; the superconducting wire coil adopts the high-temperature superconducting coil as the armature winding, so that the current-carrying density of the stator side armature winding can be improved, the overall power density is improved, and the overall weight is reduced. The overall design of the wire coil can effectively fix and support the high-temperature superconducting coil, and the upper and lower cover plates of the wire coil adopt screws and nuts made of nylon and glass fiber materials, thereby achieving the purposeof reducing the eddy-current loss of the overall coil. The design of the polygonal notches is beneficial to the installation and disassembly of the whole wire coil, and the magnetic gathering effectof the iron core can be weakened through the linear or rounded treatment at the sharp corners, the surface magnetic field of the superconducting coil is reduced, the working environment of the superconducting coil is improved, and the critical current of the superconducting coil is increased.

Description

technical field [0001] The invention relates to a high-temperature superconducting motor, in particular to a stator using an armature winding of a superconducting coil. Background technique [0002] High-temperature superconducting motors use high-temperature superconductors and high-temperature superconducting armature windings, of which: [0003] (1) High-temperature superconductors Compared with conventional conductors, superconductors have two basic characteristics, namely: zero resistance characteristic and Meissner effect. Under normal conditions, the superconducting material has resistance, which belongs to the normal state; when the superconducting material is cooled below a certain temperature, the resistance is zero, showing superconductivity, and the superconductor is in the superconducting state. High-temperature superconducting materials were born in 1986. With the discovery of high-temperature cuprate superconductors, the research on "high-temperature supercon...

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Problems solved by technology

[0005] (3) AC loss of superconducting coils, high-temperature superconducting materials have almost no loss under direct current, but under the influence of alternating current or alternating magnetic field, superconducting coils will produce AC loss, which is an intrinsic property of the material ,Unavoidable

The reduction of critical current means that the AC loss will increase under the same condition of current flow

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