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Wind turbine blade with air pressure sensors

A technology of wind turbine blades and pressure sensors, applied in the field of wind turbine blades, can solve the problems of complicated blade construction process, affecting blade aerodynamic performance, disadvantages, etc.

Inactive Publication Date: 2013-12-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This complicates the blade construction process
In addition, with such appliances, the pressure usually needs to be introduced into the sensor diaphragm through nozzles and tubes, causing the directionality of the pressure measurement to be further limited
any structure extending over the outer surface of the blade also tends to adversely affect the aerodynamic performance of the blade

Method used

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  • Wind turbine blade with air pressure sensors
  • Wind turbine blade with air pressure sensors
  • Wind turbine blade with air pressure sensors

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Embodiment Construction

[0082] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0083] See attached picture, figure 1 A perspective view of a horizontal axis wind turbine 10 is shown. It should be appreciated that wind turbine 10 may be a vertical axis wind turbine. Wind turbine 10 includes a tower 12, a nacel...

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PUM

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Abstract

A wind turbine blade has a suction side shell member and a pressure side shell member. The shell members are joined along a leading edge and a trailing edge from a root to a tip of the blade and defining an internal cavity of the blade. A pressure sensor is configured on at least one of the suction side shell member or the pressure side shell member. The pressure sensor further comprises a body mounted to an inner surface of the respective shell member within the internal cavity. A sensing element has a first side exposed to external air pressure through a passage in the respective shell member, and an opposite second side exposed to a reference pressure. A control circuit within the body generates a variable output signal as a function of a pressure differential between the external air pressure and the reference pressure experienced by the sensing element.

Description

technical field [0001] The present subject matter relates generally to wind turbine blades, and in particular to wind turbine rotor blades having pressure sensors incorporated therein. Background technique [0002] Measurement of the dynamic pressure of the airflow over wind turbine blades is useful for various reasons, such as indication of blade performance, pitch control, load control, stall detection, etc. US Patent Application Publication No. 2010 / 0021296 describes the use of a plurality of pressure sensors arranged on the suction and pressure sides of a wind turbine blade to determine the angle of attack of wind acting on the blade. The angle of attack measurement is used to adjust the pitch of the blades to optimize wind turbine performance. [0003] Conventional mechanical pressure sensors often have drawbacks for use on wind turbine blades. For example, piezoelectric / strain-based pressure sensors that require a diaphragm to measure pressure-induced stress and stra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F03D7/00G01M9/06G01L13/00
CPCF05B2270/80F03D17/00G01M9/065Y02E10/72F03D7/042G01L13/00
Inventor 熊伟郑大年黄雄哲王京J.夏
Owner GENERAL ELECTRIC CO