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A Stator Excited High Temperature Superconducting Field Modulated Motor

A high-temperature superconducting, stator technology, applied in the direction of magnetic circuits, electromechanical devices, electrical components, etc., can solve the problems of low power density, low reliability, complex dynamic sealing structure, etc., to achieve high power density, high mechanical reliability, Effect of improving electromechanical conversion capability and power density

Active Publication Date: 2019-02-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of low power density of traditional low-speed direct-drive permanent magnet synchronous motors and the complex dynamic sealing structure and low reliability of the low-temperature cooling system of rotor-excited high-temperature superconducting motors, the present invention provides a stator excitation motor with simple structure and convenient processing. Type HTS Field Modulated Motor Topology

Method used

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  • A Stator Excited High Temperature Superconducting Field Modulated Motor
  • A Stator Excited High Temperature Superconducting Field Modulated Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A stator excitation type high temperature superconducting field modulation motor, including a stator 1, a rotor 2, a high temperature superconducting field winding 3 and an armature winding 4 oppositely arranged; the stator 1 and the rotor 2 are made of silicon steel laminations or other magnetically conductive materials The composition is the same as the stator and rotor core manufacturing process of ordinary permanent magnet synchronous motors;

[0040] Stator teeth 11 arranged equidistantly are arranged on the inner side of the stator 1, and stator slots are formed between adjacent stator teeth 11; the inner side forms an alternating structure of tooth slots, and the stator is formed by laminating silicon steel sheets; the high-temperature superconducting The excitation winding 3 is wound on the stator teeth 11 at intervals; all the high-temperature superconducting excitation windings are fed with the same direct current, and the directions of the formed magnetic fiel...

Embodiment 2

[0047] Such as figure 1 shown.

[0048] A stator-excited high-temperature superconducting field modulation motor as described in Embodiment 1, the difference is that the stator-excited high-temperature superconducting field modulation motor is a ring-shaped rotating motor, including a casing 5, inside the casing 5 and A stator 1, a rotor 2 and a motor shaft 6 are arranged coaxially in sequence in the radial direction;

[0049] Both the stator 1 and the rotor 2 are annular magnetizers, and the inner ring of the stator 1 is provided with stator teeth 11 arranged equidistantly; the inner ring forms an alternating structure of tooth slots, and the stator is formed by laminating silicon steel sheets; The high-temperature superconducting field windings 3 are wound on the stator teeth 11 at intervals; all the high-temperature superconducting field windings are fed with the same direct current, and the directions of the formed magnetic fields are the same, which are radially inward o...

Embodiment 3

[0054] Such as figure 1 shown.

[0055] A stator-excited high-temperature superconducting field modulation motor as described in Embodiment 2, the difference is that the casing 5 is an aluminum annular component. Used to fix the stator.

[0056] The number of the stator teeth 11 is N s , the coil number N of the high-temperature superconducting excitation winding 3 f satisfy the following relationship: N s =2×N f , the number of stator teeth 11 is N s is an integer multiple of 3. The design here is to be able to wind a three-phase symmetrical armature winding.

[0057] The number N of the rotor salient poles 21 r , the number of coils N of the HTS excitation winding 3 f , Armature winding 4 forms the number of pole pairs P of the armature magnetic field a satisfy the following relationship: N r =N f +P a .

[0058] As described in Examples 2 and 3, combined with figure 1 Shown:

[0059] Among them, the first HTS excitation coil 301, the second HTS excitation co...

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Abstract

The invention provides a stator excitation type high-temperature superconducting field modulation motor comprising a stator, a rotor, a high-temperature superconducting excitation winding and an armature winding. Stator teeth arranged at equal intervals are arranged at the inner side of the stator; and a stator slot is formed between each two adjacent stator teeth. The high-temperature superconducting excitation winding winds around the stator teeth at a tooth interval. Rotor salient poles arranged at equal intervals are arranged at the outer side of the rotor. The armature winding is a three-phase symmetric winding and is embedded into the stator slot in distributed winding manner with a span of 2. And an air gap is formed between the stator and the rotor. According to the stator excitation type high-temperature superconducting field modulation motor, a static sealing cooling problem of a high-temperature superconducting excitation winding can be solved effectively; the high power density can be obtained by using a magnetic gear effect; and the modulation motor is especially suitable for a low-speed large-torque direct drive application occasion like wind power generation. The motor has advantage of simplifying a manufacturing process, improving mechanical stability and operation stability of the motor, reducing processing and operating costs, and improving the electromechanical conversion capacity.

Description

technical field [0001] The invention relates to a stator excitation type high temperature superconducting field modulation motor, which belongs to the technical field of motors. Background technique [0002] In recent years, wind power technology has become more and more mature. In the past two decades, the cost of wind power has dropped by 80%, making it the new energy power generation method with the cost closest to that of thermal power. This makes wind power the basis for large-scale commercial operation. At present, wind power generation has become a strategic industry of governments around the world and one of the hotspots of domestic and foreign experts and scholars. [0003] Compared with the high-speed permanent magnet wind power generation system that adopts the speed-up gear to speed up, the direct-drive permanent magnet wind power generation system has simple structure, high efficiency, high reliability, fast dynamic response and low maintenance cost due to the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/14H02K1/16H02K1/24
CPCH02K1/145H02K1/16H02K1/24
Inventor 李祥林刘圣炜王玉彬
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)