High-temperature superconducting motor

A high-temperature superconducting and electric motor technology, applied in the direction of winding conductive materials, electric components, electrical components, etc., can solve the problems of motor structure, performance and efficiency, increase the air gap distance, affect the performance of the motor, etc., to reduce loss, self- The effect of small field leakage flux and high current carrying capacity

Active Publication Date: 2011-01-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This insulation layer structure will occupy a certain space, which will have a great impact on the structure, performance and efficiency of the motor.
For example, the size of the air gap between the motor rotor and the stator has a great influen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this embodiment, the heat-insulating Dewar 4 as the heat-insulating layer is in the outermost layer, the rotor 3 is a DC excitation winding wound with a high-temperature superconducting armature winding 1, and the stator core 2 is a wind-driven generator wound with a high-temperature superconducting AC armature winding . The specific structure is a centralized three-phase winding structure with 8 poles and 9 slots. The stator core 2 is made of silicon steel sheets and has nine stator slots, each of which has two conductor sides of different coils placed in parallel. The notch is fitted with a magnetic slot wedge structure. The pitch of each superconducting coil is 1, that is, a coil spans only one tooth, and the coil shape of the high-temperature superconducting armature winding 1 is a racetrack shape. The main magnetic flux of the air gap in the motor is generated by the DC excitation coil of the high temperature superconducting armature winding 1 on the rotor 3 ....

Embodiment 2

[0055] In this embodiment, the heat-insulating Dewar 4 as the heat-insulating layer is on the outermost layer, the rotor 3 is a permanent magnet, and the stator core 2 is a generator wound with high-temperature superconducting AC armature windings. A 10Hz alternating current is passed through the high temperature superconducting alternating current armature winding. The specific structure is a centralized three-phase winding structure with 8 poles and 9 slots, such as Figure 10 shown. The stator iron core 2 is made of silicon steel sheet and is divided into two parts: stator teeth 14 and stator yoke 15. There are nine stator slots 13 in total, and the conductor sides of two different coils are placed in each stator slot and placed in parallel. The notches of the stator slots are fitted with magnetic slot wedge structures. The span of each high-temperature superconducting coil is 1, that is, a coil spans only one tooth. The shape of the high temperature superconducting coil...

Embodiment 3

[0057] In this embodiment, the rotor 3 is a permanent magnet, and the stator core 2 is a generator wound with high-temperature superconducting AC armature windings. Its basic structure is as follows Figure 11 shown. The heat-insulating Dewar 4 is located in the outermost layer; the high-temperature superconducting armature winding 1 is located in the interior of the rotor 3; the interior of the stator core 2 is provided with a low-temperature refrigerant 5, which can be directly introduced into a cryogenic liquid (including liquid helium, liquid neon, liquid hydrogen) , liquid nitrogen), can also be connected with refrigeration system; Permanent magnet block 16 is positioned at the outside of air gap 12, can adopt NdFeB permanent magnet, or samarium cobalt permanent magnet, or ferrite permanent magnet, or AlNi Cobalt permanent magnets can also be magnetized YBCO high-temperature superconducting bulk materials.

[0058] The characteristic of this example is that when the gene...

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Abstract

The invention relates to the technical field of motors, in particular to a high-temperature superconducting motor. The motor comprises an electromotor and an electric generator, wherein an armature winding of the motor is formed by winding high-temperature superconducting wires, current passing the wires has an AC component; and a heat insulated layer of the motor is arranged on the outer part of the motor, and the heat insulated layer is not arranged between a rotor and a stator of the motor or the heat insulated layer with the thickness of less than 10mm is arranged between the rotor and the stator of the motor. In the concentrated winding scheme and the non-concentrated winding scheme provided by the invention, a spatial mutual interference phenomenon does not exist on the end parts of coils; because low frequency AC is used, the loss is lowered; and the safety and stability of the motor can be effectively guaranteed, and the motor is particularly applied to fields such as wind power generation, propulsion of ships and automobiles and the like.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a high-temperature superconducting motor in which an armature winding adopts high-temperature superconducting wires, and a rotor adopts conventional excitation coils or superconducting magnets or permanent magnets. Background technique [0002] Since the discovery of high-temperature superconducting materials in 1986, researchers have conceived of using high-temperature superconducting materials to manufacture high-performance motors. Prior to this, low-temperature superconducting motors were also available, but they were never commercialized due to their high cost. However, compared with low-temperature superconductors, high-temperature superconductors have the advantages of strong current-carrying capacity, high critical temperature, and relatively good performance under magnetic fields, so they have attracted widespread attention. [0003] The high-temperature superconducting ...

Claims

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Application Information

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IPC IPC(8): H02K55/00H02K3/02H02K1/27H02K3/12H02K3/487
Inventor 瞿体明宋彭韩征和顾晨
Owner TSINGHUA UNIV
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