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Rotor Blade With Vortex Generators

A technology of vortex generators and rotor blades, which is applied in the field of wind turbines and can solve problems such as increased loads

Active Publication Date: 2016-06-29
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this context, an increase in maximum lift is generally seen as a disadvantage because of the increased load on the rotor blade and, therefore, the requirements for the structural stability of the rotor blade may have to be reviewed

Method used

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  • Rotor Blade With Vortex Generators
  • Rotor Blade With Vortex Generators
  • Rotor Blade With Vortex Generators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] exist figure 1 In , a wind turbine 10 is shown. Wind turbine 10 includes a nacelle 12 and a tower 11 . A nacelle 12 is mounted at the top of the tower 11 . The nacelle 12 is mounted rotatable with respect to the tower 11 by means of a yaw bearing. The axis of rotation of the nacelle 12 with respect to the tower 11 is called the yaw axis.

[0065] Wind turbine 10 also includes three rotor blades 20 ( figure 1 The hub 13 with two rotor blades 20) is depicted in . The hub 13 is mounted rotatable with respect to the nacelle 12 by means of main bearings. The hub 13 is mounted rotatably about an axis of rotation 14 of the rotor.

[0066] Furthermore, the wind turbine 10 also includes a main shaft, which connects the hub 13 to the rotor of the generator 15 . The hub 13 is directly connected to the rotor, thus the wind turbine 10 is referred to as a gearless direct drive wind turbine. As an alternative, the hub 13 can also be connected to the rotor via a gearbox. This ...

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PUM

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Abstract

The invention relates to a rotor blade with vortex generators. The rotor blade of a wind turbine and a wind turbine including at least one of such rotor blades is provided. The rotor blade comprises a main vortex generator, and a secondary vortex generator. The height of the main vortex generator is greater than the height of the secondary vortex generator. Furthermore, the main vortex generator and the secondary vortex generator are configured and arranged such with regard to each other that for a boundary layer thickness being smaller than the height of the secondary vortex generator, the secondary vortex generator reduces, in particular neutralizes, the impact of the main vortex generator on the lift of the rotor blade, and for a boundary layer thickness being larger than the height of the secondary vortex generator, the lift of the rotor blade is substantially unaffected by the presence of the secondary vortex generator.

Description

technical field [0001] The invention relates to a wind turbine and to a rotor blade of a wind turbine. In particular, the invention relates to the problem of how rotor blades and wind turbines comprising such rotor blades can be improved in terms of aerodynamics and structure. Background technique [0002] It is known from the field of aircraft to provide a wing of an aircraft, ie an aircraft, with vortex generators. Vortex generators are simple devices that improve the aerodynamic efficiency of an airfoil under certain conditions. A vortex generator is an aerodynamic add-on that can eg be fitted to a finished wing, or it can be incorporated into the manufacturing process of a new wing. [0003] It is also known that vortex generators can have beneficial effects on rotor blades of wind turbines. For example, International Patent Application WO2006 / 122547A1 discloses a rotor blade of a wind turbine having turbulence generating means at the leeward side (ie suction side) of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06
CPCF03D1/0633F03D1/0675F05B2240/221Y02E10/72F05B2240/3062F05B2240/122
Inventor P.B.埃内沃尔德森P.富格尔桑A.G.冈萨莱斯
Owner SIEMENS GAMESA RENEWABLE ENERGY AS