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Magnetic pole fixing device of permanent magnet wind power generator and permanent magnet wind power generator

A wind power generator and magnetic pole fixing technology, applied in wind power generation, electromechanical devices, manufacturing motor generators, etc., can solve the problems of low long-term reliability of the magnetic pole module fixing device, difficulty in installing the magnetic pole module, etc., and avoid bolts Fracture, solve the effect of difficult installation and large stress area

Active Publication Date: 2019-06-21
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a magnetic pole fixing device for a permanent magnet wind power generator and a permanent magnet wind power generator to overcome the defects of the existing technology that the installation of the magnetic pole module is difficult and the long-term reliability of the magnetic pole module fixing device is low. dynamo

Method used

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  • Magnetic pole fixing device of permanent magnet wind power generator and permanent magnet wind power generator
  • Magnetic pole fixing device of permanent magnet wind power generator and permanent magnet wind power generator
  • Magnetic pole fixing device of permanent magnet wind power generator and permanent magnet wind power generator

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Embodiment 1

[0073] The invention provides a magnetic pole fixing device of a permanent magnet wind power generator and a permanent magnet wind power generator, which are used to realize the fixing of a magnetic pole module on a rotor. Such as Figure 1-2 As shown, the magnetic pole fixing device includes a plurality of first fixing block assemblies 30, a plurality of second fixing block assemblies 40 and a plurality of radial restricting assemblies 50.

[0074] A plurality of first fixed block assemblies 30 are arranged on the side surface of the rotor 10 adjacent to the air gap and extend toward the outside of the rotor 10. The air gap is the gap between the stator and the rotor 10, and the plurality of first fixed block assemblies 30 extend along the rotor 10 10 are arranged at intervals in the circumferential direction, the distance between two adjacent first fixed block assemblies 30 is equal to the width of the magnetic pole module 20, and each first fixed block assembly 30 includes a pl...

Embodiment 2

[0083] The structure of this embodiment is basically the same as that of Embodiment 1, and the difference is that the number of the left second fixed block 401 and the right second fixed block 402 included in each second fixed block assembly 40 is different; the radial limit The components 50 are different; the thickness of the second fixing block 401 on the left and the second fixing block 402 on the right are different.

[0084] Such as Figure 3-4 As shown, each second fixed block assembly 40 includes two left second fixed blocks 401 spaced apart along the length of the magnetic pole module 20 and two right second fixed blocks 401 spaced apart along the length of the magnetic pole module 20. The fixing block 402, the second fixing block 401 on the left and the second fixing block 402 on the right are symmetrically arranged. For the two adjacent magnetic pole modules 20 in the circumferential direction of the rotor 10, one of the magnetic pole modules 20 is The two fixed blocks...

Embodiment 3

[0088] The structure of this embodiment is basically the same as that of the first embodiment. The difference is that the radial restricting component 50 is different. The radial connection in the first embodiment is changed to the axial connection to restrict the magnetic pole module 20 along the radial direction of the rotor 10. Directional movement; the first fixing block 301 is fixed on the rotor 10 in fewer ways.

[0089] Such as Figure 5-6 As shown, the radial restriction assembly 50 includes a first axial connection hole 503, a second axial connection hole 504 and an axial fastener. The first axial connection hole 503 is provided in the first fixing block 301 and extends along the axial direction of the rotor 10. The second axial connection hole 504 is provided in the second fixing block assembly 40 and extends along the length direction of the magnetic pole module 20. The movement of the magnetic pole module 20 along the radial direction of the rotor 10 is restricted by...

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Abstract

The invention discloses a magnetic pole fixing device of a permanent magnet wind power generator and the permanent magnet wind power generator. The magnetic pole fixing device of the permanent magnetwind power generator comprises a plurality of first fixed block assemblies, a plurality of second fixed block assemblies and a plurality of radial limiting assemblies. Each first fixed block assemblycomprises a plurality of first fixed blocks arranged at intervals along the axial direction of a rotor, and each second fixed block assembly is arranged on the two side faces of the magnetic pole module. The two adjacent first fixed block assemblies are used for limiting the movement of the magnetic pole module contained in the two adjacent first fixed block assemblies in the circumferential direction of the rotor, the first fixed block assemblies and the second fixing block assemblies are matched to limit the movement of the magnetic pole module in the axial direction of the rotor, and the radial limiting assemblies are used for limiting the movement of the magnetic pole module in the radial direction of the rotor. According to the magnetic pole fixing device of a permanent magnet wind power generator and the permanent magnet wind power generator, the defects that the installation difficulty of the magnetic pole module in the prior art is large, and the long-term reliability of the magnetic pole module fixing device is low are effectively overcome.

Description

Technical field [0001] The invention relates to the field of wind power generation, in particular to a magnetic pole fixing device of a permanent magnet wind generator and a permanent magnet wind generator. Background technique [0002] The rotor of a large permanent magnet wind power generator is equipped with multiple permanent magnets, especially rare earth permanent magnets such as neodymium iron boron as its magnetic poles. When the generator is running, it is affected by various factors such as temperature, humidity, vibration, alternating electromagnetic force and other factors in the working environment. The permanent magnet is easy to fall off the rotor, which affects the safe and reliable operation of the motor. Therefore, the permanent magnet wind generator rotor magnetic The way the steel is fixed and encapsulated is very critical. [0003] At present, a common permanent magnet fixing and packaging method is: after the permanent magnet and the rotor are assembled, a gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/28H02K1/27
CPCH02K1/28H02K1/27Y02E10/72H02K7/183H02K1/2791H02K2213/03H02K15/03
Inventor 吴立建刘军伟王嗣翔王江乔闻汇方攸同
Owner ZHEJIANG UNIV
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