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Power generator and wind generating set

A technology for wind power generators and generators, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, magnetic circuit rotating parts, etc., can solve problems such as poor generator performance and uneven air gap, and achieve Effect of improving electrical and mechanical properties

Inactive Publication Date: 2016-01-06
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a generator and a wind power generating set to solve the problem of poor performance of the generator caused by uneven air gaps during the operation of the generator

Method used

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  • Power generator and wind generating set

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Experimental program
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Effect test

Embodiment 1

[0030] It should be noted that the generator in this embodiment can be an external rotor generator, that is, the rotor 10 is sleeved outside the stator 20 ;

[0031] Such as image 3 As shown, the generator includes a rotor 10, a stator 20, and an air gap 30 formed between the rotor 10 and the stator 20 along the radial direction of the generator. In this embodiment, the generator further includes a first air gap control assembly 40 and a second air gap control assembly 50 . The first air gap control assembly 40 is disposed on the rotor 10 (when the rotor 10 moves radially, the first air gap control assembly 40 moves accordingly), and the first air gap control assembly 40 has a first magnetic pole 41 . The second air gap control assembly 50 is arranged on the stator 20 (when the stator 20 moves radially, the second air gap control assembly 50 moves accordingly), and the second air gap control assembly 50 has a second magnetic pole 51, the first The magnetic pole 41 and the s...

Embodiment 2

[0043] Such as Figure 5 As shown, in this embodiment, except for the setting positions of the first air gap control assembly 40 and the second air gap control assembly 50 and the connection with the corresponding rotor 10 and stator 20, the others are the same as those in the embodiment one by one. Sincerely, I will not repeat them here.

[0044] Specifically, the end surface of the rotor 10 is provided with a rotor end cover plate 11 extending in the radial direction to increase the rigidity of the rotor 10. Correspondingly, an additional connecting piece 21 is fixedly arranged on the stator 20, and the additional connecting piece 21 is L-shaped. , which has a vertical section extending in the radial direction of the generator, the rotor end cover plate 11 corresponds to the vertical section in the radial direction, and there is a gap between them. The first permanent magnet of the first air gap control assembly 40 is arranged on the end surface of the rotor end cover plate...

Embodiment 3

[0047] Such as Figure 6 As shown, in this embodiment, except that the first air gap control assembly 40 and / or the second air gap control assembly 50 include electromagnets, other structures, setting positions and principles are the same as those of the second embodiment, and will not be repeated here. repeat.

[0048] Specifically, in this embodiment, the permanent magnets are arranged on the rotor end cover plate 11 , and the electromagnets are arranged on the vertical section of the additional connecting piece 21 . Of course, the permanent magnets can be directly arranged on the end surface of the rotor 10 , and the electromagnets can be directly arranged on the end surface of the stator 20 . In other embodiments, electromagnets may also be provided on both the rotor end cover plate 11 and the vertical section.

[0049] Preferably, since the magnetic force of the electromagnet can be changed by changing the magnitude of the current, it has better controllability. In orde...

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Abstract

The invention provides a power generator and a wind generating set. The power generator comprises a rotor, a stator, and an air gap formed between the stator and the rotor along the radial direction of the power generator. The power generator also comprises a first air gap control assembly and a second air gap control assembly, wherein the first air gap control assembly is arranged on the rotor, and has a first magnetic pole; the second air gap control assembly is arranged on the stator and has a second magnetic pole; and the first magnetic pole and the second magnetic pole face each other, and have the same polarity. According to the power generator of the invention, the stator and the rotor can be supported through the repulsive force between the magnetic poles, and stability of the air gap can be effectively ensured.

Description

technical field [0001] The invention relates to the field of power generation equipment, in particular to a generator and a wind power generator set. Background technique [0002] Wind turbines can generally be divided into two categories in terms of structure: doubly-fed generators with a gearbox arranged between the impeller and the generator, and direct-drive generators without a gearbox. For a direct-drive generator set, whether it is a permanent magnet or electric excitation unit, the air gap between the generator stator and rotor (hereinafter referred to as air gap) is an important electromagnetic parameter. For a running generator, the uniformity of its air gap will directly affect the stability of the electrical characteristics and mechanical performance of the generator. [0003] Such as figure 1 and figure 2 As shown, in general, a direct-drive wind generator includes three major components: an impeller 80 , a generator 70 and a nacelle 90 , and the generator 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/22
CPCH02K1/12H02K1/22
Inventor 时洪奎彭云武青虎
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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