Superconducting motor with ultra-low loss

Abstract

The invention discloses a superconducting motor with ultra-low loss, which comprises an enclosure, a stator and a rotor, wherein the rotor is in an iron-core-free structure and mainly comprises a pole shoe, a rotor spider and a hollow rotating shaft; the pole shoe is wound with an exciting winding; the exciting winding is a superconducting coil; for the stator, a cooling tube is arranged in each stator slot based on the traditional structure; the enclosure comprises a housing; a spiraltron is wound on the outer side of the housing; a heat-proof radiation layer is arranged on a tooth surface of the stator; and cooling media are charged into the spiraltron, the cooling tubes, collecting tubes and the hollow rotating shaft. The superconducting motor with the ultra-low loss is very low in motor loss; the efficiency of the superconducting motor can reach above 99%; no dewar is arranged in an air gap; and the small air gap becomes possible; the motor is low in heat leakage and high in power density; and the refrigeration cost is low.

Description

Technical field [0001] The invention relates to low-temperature transmission and motor technology, in particular to a superconducting motor with ultra-low loss and low cooling cost. Background technique [0002] Since the discovery of high-temperature superconducting materials in 1986, researchers have conceived the use of high-temperature superconducting materials to manufacture high-performance motors. There are three types of high-temperature superconducting motors currently being studied: the first type is full-superconducting. Both the stator and the rotor use high-temperature superconducting materials, and the rotor is connected to DC without loss, but the superconducting material in the stator will produce a large amount in an alternating magnetic field. The second type uses high-temperature superconducting in the stator and the conventional structure of the rotor, which has the same problems as the first type; the third type is the conventional stator, and the rotor uses ...

AI Technical Summary

Problems solved by technology

There are three kinds of high-temperature superconducting motors under study: the first type is fully superconducting, the stator and rotor are made of high-temperature superconducting materials, and there is no loss in the direct current flow in the rotor, but the superconducting materials in the stator will generate large AC loss; the second type, the stator uses high-temperature superconducting materials, and the rotor adopts a conventional structure, which has the same problem as the first type; the third type is a conventional stator, and the rotor uses high-temperature superconducting materials. It is to install a heat insulation layer between the stator and the rotor, only to cool the rotor, and the stator is still at room temperature, so that although the rotor has no loss, the stator loss is the same as that of a conventional motor, and the copper loss is relatively large

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