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High-temperature superconducting motor

A high-temperature superconductivity and wire technology, applied in the field of superconductivity, can solve the problems of occupied space, motor structure, performance and efficiency, and achieve the effect of reducing loss, providing safety and stability, and high-efficiency power output.

Active Publication Date: 2013-03-13
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, the high temperature superconducting winding coil 1 is made of Bi-2223 / Ag strip material, and its shape is racetrack. The rotor 2 is a permanent magnet rotor, and the permanent magnets 19 on the rotor are NdFeB permanent magnets. The winding on the stator core adopts the fractional slot concentrated winding. The Dewar 4 is assembled with the stator core 3 by press-fitting. Stator slots are filled with stycast1266. A nonmagnetic slot wedge is inserted between the magnetic slot wedge 16 and the high temperature superconducting winding coil 1 to fix the high temperature superconducting coil. The air gap between the rotor 2 and the stator core 3 is 5mm. The stator core material is made of silicon steel sheet. Dewar 4 is a stainless steel annular Dewar with a single-layer thick-walled structure, and the inner wall of the Dewar is 12mm. The vacuum chamber 7 and the bearing seat 8 are all made of stainless steel. The Dewar 4 and the glass fiber reinfo...

Embodiment 2

[0047] In this embodiment, the high temperature superconducting winding coil 1 is made of Bi-2223 / Ag strip material, and its shape is racetrack. The rotor 2 is a rotor using a high-temperature superconducting coil as an excitation coil, and the high-temperature superconducting excitation coil 21 on the rotor is a high-temperature superconducting coil wound by a YBCO coated conductor. The winding on the stator core 3 adopts distributed winding with fractional slots. The Dewar 4 is assembled with the stator core 3 by press-fitting. Stator slots are filled with stycast1266. A nonmagnetic slot wedge is inserted between the magnetic slot wedge 16 and the high temperature superconducting winding coil 1 to fix the high temperature superconducting coil. The air gap between the rotor 2 and the stator core 3 is 10mm. The stator core material is made of non-magnetic austenitic stainless steel. Dewar 4 is a stainless steel annular Dewar with a single-layer thick-walled structure, and ...

Embodiment 3

[0049] In this embodiment, the high temperature superconducting winding coil 1 is made of Bi-2223 / Ag strip material, and its shape is a rounded rectangle. The rotor 2 is a rotor using a high-temperature superconducting block material as an excitation pole, and the high-temperature superconducting block material 23 on the rotor is a YBCO block material. The winding on the stator core 3 adopts integer slot distributed winding. The Dewar 4 is assembled with the stator core 3 by press-fitting. Stator slots are filled with stycast1266. A nonmagnetic slot wedge is inserted between the magnetic slot wedge 16 and the high temperature superconducting winding coil 1 to fix the high temperature superconducting coil. The air gap between the rotor 2 and the stator core 3 is 15mm. The stator core material is made of non-magnetic austenitic stainless steel. Dewar 4 is a stainless steel annular Dewar with a single-layer thick-walled structure, and the inner wall of the Dewar is 20mm. The...

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Abstract

The invention relates to the field of superconducting technologies and the field of motor technologies, and particularly relates to a high-temperature superconducting motor. The motor comprises an electromotor and a generator, an armature winding is manufactured by winding a high-temperature superconducting wire, and a current passing through the armature winding has an alternating component. A refrigerating Dewar vessel of the motor is placed on the outside of a stator core, and cools a high-temperature superconducting coil in a contact conduction refrigerating mode. No heat insulating layer is arranged between a stator and a rotor of the motor, and an inner cavity of the motor is pumped as a low-vacuum cavity, so that no heat convection and no heat conduction are formed between the stator and the rotor. The torque transmission between the inside and outside of the vacuum cavity is realized through a magnetofluid sealing part. Stator windings are distributed in a centralized winding form. The coil adopts a runway coil or a rounded square coil, and no space mutual-interference situation occurs at the end part of the coil; a low-frequency alternating current is used, so that the loss is reduced; and due to the low-frequency characteristic, the motor is especially applicable to the fields such as wind power generation, marine propulsion power, and the like.

Description

technical field [0001] The invention relates to the field of superconducting technology and the technical field of motors, in particular to a high-temperature superconducting motor. Background technique [0002] At present, high-temperature superconducting materials are gradually entering the stage of industrial application, and the field of motor technology is a popular field of application. Compared with conventional conductive materials, high-temperature superconducting materials have the characteristics of high current-carrying capacity and low loss. These characteristics can greatly increase the power density of the motor and reduce the volume of the motor. [0003] The high-temperature superconducting motor (HTS motor) involved in this patent refers to a new type of high-performance motor made of a coil made of high-temperature superconducting wire instead of a conventional copper wire coil as the armature winding of the motor. [0004] High-temperature superconductin...

Claims

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Application Information

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IPC IPC(8): H02K55/02
Inventor 宋彭瞿体明于晓宇李隆年胡伯平王玉国王德文顾晨韩征和
Owner TSINGHUA UNIV
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