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Direct Drive Wind Turbine

A wind turbine, direct-drive technology, used in wind turbine combinations, wind turbines, wind power generation, etc., can solve the problems of increasing the weight of the generator, reducing the life of the generator, and increasing the manufacturing cost, so as to improve the life and the durability. The effect of load reduction and compensation

Active Publication Date: 2020-05-26
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

But this feature has a great negative impact on the air gap of the generator. In order to ensure the minimum air gap to prevent the rotor from colliding with the stator, the rotor needs to be made larger, which will increase the weight of the generator and increase the manufacturing cost.
Moreover, as in CN107191474A Image 6 As shown in , the shaft and the rotor are rigidly connected, and the generator is under a large load during the rotation of the shaft, which reduces the life of the generator

Method used

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Embodiment Construction

[0033] Hereinafter, the direct drive wind power generator set according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0034] Such as figure 1 with figure 2 As shown, in the direct drive wind power generator set according to the embodiment of the present invention, the rotating shaft 3 is connected to the fixed shaft 4 through the first bearing, and the rotor 1 of the generator is rotatably mounted to the fixed shaft 4 through the second bearing 6. The rotating shaft 3 A flexible coupling 5 is provided between the rotor and the rotor 1, and the torque is transmitted from the rotating shaft 3 to the rotor 1 through the flexible coupling 5.

[0035] The rotating shaft 3 is used to input torque to the rotor 1. The rotating shaft 3 may be integrally formed with the hub equipped with blades, or rigidly connected with the hub installed with the blades, so that when the wind drives the blades to rotate, the hub and t...

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Abstract

The invention provides a direct driven wind power generation unit. In the direct driven wind power generation unit provided by the invention, a rotary shaft is connected to a fixed shaft through a first bearing, a rotor of a generator is rotatably mounted to the fixed shaft through a second bearing, a flexible coupling is arranged between the rotary shaft and the rotor, and the flexible coupling transfers a torque from the rotary shaft to the rotor. Therefore, influences of a wind load onthe generator can be reduced, the service life of the generator is prolonged, and the air gap of the generator is guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of wind power generation, and more specifically, to the improvement of the drive train of a direct-drive wind power generating set. Background technique [0002] Wind turbines are new energy equipment that uses wind energy to generate electricity. Mainstream wind turbines are mainly divided into two categories, namely, direct-drive wind turbines without a speed-increasing drive system and doubly-fed wind turbines with a speed-increasing drive system. [0003] The existing direct drive wind power generator includes a tower, a nacelle arranged on the top of the tower, a hub at the front end of the nacelle, and blades installed on the hub. The rear end of the hub is integrated with the rotating shaft, the rotating shaft is coupled to the fixed shaft through the main bearing, and the fixed shaft is fixed to the nacelle base. The rotor of the generator is integrated with the rotating shaft, and the stator is f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/70F03D80/00F03D15/00F03D9/25
CPCF03D9/25F03D15/00F03D80/00F03D80/70Y02E10/72
Inventor 位士安
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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