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Wind turbine with noise-reducing blade rotor

A wind turbine and blade-type technology, which is applied to wind engines, wind engines, wind turbine components, etc. that are consistent with the wind direction, and can solve problems such as high noise index

Inactive Publication Date: 2007-03-28
歌美飒风电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] These solutions have the disadvantage that the tooth body is a rigid element, so that when it is not aligned with the air flow, there will be situations where high noise figures are generated at increased frequencies

Method used

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  • Wind turbine with noise-reducing blade rotor

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Embodiment Construction

[0021] According to the invention, a wind turbine comprises a rotor having at least one blade 11 having a leading edge 13 and a trailing edge 15 comprising an assembly 21 of flexible bristles 23, said flexible The bristles 23 are preferably made of a polymeric material, in particular polypropylene (PP).

[0022] The bristle assembly 21 is arranged at the trailing edge 15, at the end of the blade 11 and up to the tip 17, along a length L1 which is preferably less than 40% of the total length of the blade, since this is where most of the Areas of aerodynamic noise.

[0023] Preferably, the bristles 23 of the assembly 21 are arranged to form a right angle to the trailing edge 15 in the lengthwise direction, as shown in FIG. 1 . In the transverse direction, the bristles 23 may be aligned with the upper or lower surface of the trailing edge 15, as shown in Figures 2a and 2b, respectively.

[0024] Assembly 21 may consist of bristle blocks 31 of bristles 23 secured to a support 33...

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Abstract

Wind turbine with a blade rotor (11) which reduces noise by the inclusion of a set (21) of flexible bristles (23), aligned in at least one row, on the trailing edge (15) of the aerodynamic profile of the blades and protruding over it, which allows the pressure fluctuations to be balanced on both sides of the profile of each blade (11) in the direction of the wind flow.

Description

technical field [0001] The invention relates to a wind turbine with a bladed rotor having elements on its trailing edge which reduce the aerodynamic noise generated when the rotor is turned by the force of the wind. Background technique [0002] Wind turbines generate a lot of noise. Its blades generate aerodynamic noise through the interaction of the interface layer with the trailing edge of the blade. [0003] In the prior art, the proposed means of reducing noise is the provision of toothed elements on the trailing edge of the rotor blade. [0004] European Patent No. EP0652367 proposes different types of toothed edges for rotor blades. [0005] European Patent No. EP1314885 proposes a rotor blade with toothed blades on the trailing edge. [0006] European Patent No. EP1338793 proposes blades with toothed edges in which the length of the teeth is varied and the distance between said teeth is varied along the blade. [0007] These solutions have the disadvantage that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D11/00
CPCF03D1/0608F05B2260/96F05B2240/301Y02E10/721Y02E10/72F03D80/00
Inventor 何塞·伊格纳西奥·略伦特·冈萨雷斯
Owner 歌美飒风电有限公司