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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, which is applied in electromechanical devices, wind power generation, and motor generator manufacturing, etc. It can solve the problems of low long-term reliability of the magnetic pole module fixing device and the difficulty of installing the magnetic pole module, so as to avoid bolts Fracture, solve the problem of difficult installation and uniform force

Active Publication Date: 2020-03-13
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 the permanent magnet wind power generator, which are used to realize the fixing of a magnetic pole module on a rotor. like Figure 1-2 As shown, the magnetic pole fixing device includes a plurality of first fixed block assemblies 30 , a plurality of second fixed block assemblies 40 and a plurality of radial restriction 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. 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, except that the number of left second fixed blocks 401 and right second fixed blocks 402 included in each second fixed block assembly 40 is different; The assembly 50 is different; the thickness of the left second fixing block 401 and the right second fixing block 402 are different.

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

Embodiment 3

[0088] The structure of this embodiment is basically the same as that of Embodiment 1, except that the radial restriction assembly 50 is different, and the radial connection in Embodiment 1 is changed to an axial connection to restrict the magnetic pole module 20 along the radial direction of the rotor 10. The movement in the direction; the fixing method of the first fixing block 301 on the rotor 10 becomes less.

[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 connecting hole 503 is disposed on the first fixing block 301 and extends along the axial direction of the rotor 10 . The second axial connection hole 504 is disposed on the second fixing block assembly 40 and extends along the length direction of the magnetic pole module 20 . Movement of the magnetic pole module 20 along the radial direction of the rotor 10 is limited by axia...

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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 magnet wind power generator includes a plurality of first fixed block assemblies, a plurality of second fixed block assemblies and a plurality of radial restriction assemblies. Each of the first fixing block assemblies includes a plurality of first fixing blocks arranged at intervals along the axial direction of the rotor, and each of the second fixing block assemblies is arranged on two sides of the magnetic pole module. The two adjacent first fixed block assemblies are used to limit the movement of the magnetic pole module contained therein along the circumferential direction of the rotor, the first fixed block assembly and the second fixed block assembly cooperate to limit the movement of the magnetic pole module along the axial direction of the rotor, and the radial limiting component is used to limit the movement of the magnetic pole module along the radial direction of the rotor. The invention effectively solves the defects in the prior art that the installation of the magnetic pole module is difficult and the long-term reliability of the magnetic pole module fixing device is low.

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 power generator and the permanent magnet wind power generator. Background technique [0002] Large-scale permanent magnet wind turbine rotors are equipped with multiple permanent magnets, especially rare earth permanent magnets such as neodymium iron boron, as their magnetic poles. When the generator is running, affected by various factors such as temperature, humidity, vibration and alternating electromagnetic force in the working environment, the permanent magnet is easy to fall off from the rotor, which affects the safe and reliable operation of the motor. Therefore, the permanent magnet wind turbine rotor magnet How the steel is secured and encapsulated is critical. [0003] At present, a relatively common permanent magnet fixed packaging method is: after the permanent magnet and the rotor are assembled, glass fibe...

Claims

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Application Information

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Patent Type & Authority Patents(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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