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A deflection monitoring system for a wind turbine blade

A technology for wind turbines and blades, which is applied in the field of systems for monitoring the deflection of wind turbine blades. It can solve the problems of reducing the accuracy and effectiveness of the monitoring system, interference, and shielding communication signals, and achieve multipath suppression, simplified calculations, and improved signals. quality effect

Inactive Publication Date: 2018-08-21
LM WP PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, these wireless monitoring systems have been found to be susceptible to various operational factors that can interfere and obscure communication signals, such as signal reflections, multipath effects, signal attenuation caused by passing through layers of different materials, etc., thereby reducing the Monitoring system accuracy and effectiveness

Method used

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  • A deflection monitoring system for a wind turbine blade
  • A deflection monitoring system for a wind turbine blade
  • A deflection monitoring system for a wind turbine blade

Examples

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Embodiment Construction

[0103] figure 1 A conventional modern upwind wind turbine according to the so-called "Danish concept" is shown with a tower 4, a nacelle 6 and a rotor with a substantially horizontal rotor shaft. The rotor comprises a hub 8 and three blades 10 extending radially from the hub 8 , each blade having a blade root 16 closest to the hub and a blade tip 14 furthest from the hub 8 . The rotor has a radius denoted R.

[0104] figure 2 A schematic view of a first embodiment of a wind turbine blade 10 that may be used in accordance with embodiments of the present invention is shown. Wind turbine blade 10 has the shape of a conventional wind turbine blade and includes a root region 30 closest to the hub, a profile or airfoil region 34 furthest from the hub, and a transition between root region 30 and airfoil region 34 Area 32. The blade 10 comprises a leading edge 18 and a trailing edge 20 , the leading edge 18 facing the direction of rotation of the blade 10 when the blade is mounte...

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Abstract

A wind turbine blade comprising a system for monitoring the deflection of a wind turbine blade is described. The system comprises a wireless range-measurement system, having at least one wireless communication device located towards the root end of the blade and at least one wireless communication device located towards the tip end of the blade and internally within the blade body. Radio absorbingmaterial is arranged internally in the blade body in the wireless communication path between the root-and tip devices.

Description

technical field [0001] The present invention relates to a system for monitoring the deflection of a wind turbine blade, and to a blade with such a system. Background technique [0002] Modern wind turbine designs seek to incorporate various blade monitoring systems in order to provide reliable and controllable wind turbine operation. Such monitoring systems may include a blade deflection monitoring system for providing an indication of wind turbine blade deflection or flex during turbine operation. This information can be used to monitor the future risk of wind turbine blades hitting the tower and can be used to perform appropriate controller actions, eg blade pitching or turbine braking, to minimize or eliminate this risk. [0003] An example of such a deflection monitoring system is provided in U.S. Patent No. 7,883,316, which describes a deflection monitoring system utilizing a wireless communication network operable to detect the position of various points along the len...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00F03D1/06H01Q17/00
CPCF03D1/0675F05B2220/30F05B2240/221F05B2240/30F05B2260/74F05B2260/83F05B2260/99F05B2270/10F05B2270/30F05B2270/40F05B2280/105F05B2280/2006F05B2280/40F05B2280/6012F03D17/00H01Q17/00Y02E10/72G01B15/06
Inventor 张帅G.弗罗伦佩德森L.B.汉森
Owner LM WP PATENT HLDG
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