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Measuring loads on wind turbine blades

A technology of wind turbine blades and blades, which is applied in the field of sensor systems, can solve the problems of sensitivity and affecting the aerodynamic characteristics of blades, and achieve the effect of reliable operation

Inactive Publication Date: 2011-06-15
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pitot protrudes from the blade and affects the aerodynamic properties of the blade
Pitot tubes may also be sensitive to dust and other environmental exposures

Method used

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  • Measuring loads on wind turbine blades
  • Measuring loads on wind turbine blades
  • Measuring loads on wind turbine blades

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] figure 1 A wind turbine generator 100 is shown comprising a tower 101 and a nacelle 102 . The rotor blades 103 are fixed to the hub 104 . The assembly of rotor blades 103, ie the rotor, can be turned by the action of the wind. Thus, the wind-generated rotational energy of the rotor blades 102 can be transferred via the hub to the generator in the nacelle. Thus, the wind turbine generator 100 is able to convert wind energy into mechanical energy by means of the rotor blades and subsequently into electrical energy by means of the generator.

[0050] The rotor blade 103, or just the blade 103, includes, but is not limited to, an elongated structure having an airfoil profile adapted to provide aerodynamic lift during relative motion in the air.

[0051] The blade 103 may be provided with an aerodynamic or lift changing structure (not shown), for example, a pivotable trailing edge flap, a deformable trailing edge flap, or a device that changes the aerodynamic characterist...

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PUM

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Abstract

A sensor system for measuring aerodynamic loads acting on a wind turbine rotor blade is disclosed. The measured aerodynamic loads can be converted to an angle of attack of the resulting wind which flows past the moving rotor blade. The sensor is realised as a trailing edge flap which is elastically moveable relative the main part of the wind turbine blade. By measuring motion of the trailing edge flap or corresponding motions of components of the sensor system, the aerodynamic forces acting on the blade can be determined. Due to the relative small dimensions of the sensor flap and the relative small displacements of the flap, the sensor system only affects the aerodynamic properties insignificantly.

Description

technical field [0001] The present invention relates to a sensor system for a wind turbine, in particular to a sensor system for measuring the load on a blade. Background technique [0002] In order to increase the efficiency of a wind turbine generator, the aerodynamic properties of a wind turbine blade can be adapted to wind conditions by adjusting the pitch of the blade or otherwise changing the shape of the blade. In particular, it may be desirable to adjust or optimize lift forces on the blades. However, in order to regulate lift correctly, the angle and velocity at which the synthetic air acts on the blades should be known. The angle of the resulting air flow is often referred to as the angle of attack. [0003] The angle of attack can be measured by pitots placed at the blades. However, pitots protrude from the blade and affect the aerodynamic properties of the blade. Pitot tubes can also be sensitive to dust and other environmental exposures. [0004] It is ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/22F03D1/06
CPCY02E10/72Y02E10/723F03D1/0675F05B2270/336Y02E10/721Y02E10/722F03D7/0232F05B2270/331F03D11/0091F05B2270/809F03D17/00F05B2240/3052
Inventor C·K·林T·B·A·林K·L·张L·H·I·林W·G·金T·林
Owner VESTAS WIND SYST AS
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