A wind turbine and wind turbine blade

A technology of wind turbines and blades, applied in wind turbines, control of wind turbines, wind turbines that are consistent with the wind direction, etc.

Inactive Publication Date: 2012-11-21
YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, high wind speeds in gusts can lead to significant fatigue loads in the structural components of the wind turbine, which can lead to additional wear and tear on the wind turbine structure

Method used

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  • A wind turbine and wind turbine blade
  • A wind turbine and wind turbine blade
  • A wind turbine and wind turbine blade

Examples

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Embodiment Construction

[0044] see figure 1 and 2 , a partially pitched wind turbine with two swept blades is generally denoted by 10 . Wind turbine 10 includes a wind turbine tower 12 , a nacelle 14 positioned atop said tower 12 , and a rotor hub 16 positioned at said nacelle 14 . First and second partial pitch rotor blades 18 , 20 are provided on opposite sides of said rotor hub 16 . figure 1 In , the tower 12 is shown mounted on a wind turbine substrate 22 comprising any suitable wind turbine foundation. It will be appreciated that while the illustrated embodiments describe the invention for use with onshore wind turbines, it will be appreciated that the invention is equally applicable to wind turbines in an offshore environment.

[0045] The first and second partial pitch rotor blades 18 , 20 each comprise a blade body having a blade root end 18 a , 20 a mounted to said rotor hub 16 and a distal tip end 18 b , 20 b . The rotor blades 18, 20 comprise inner blade segments 24, 26 arranged at sai...

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PUM

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Abstract

A method for controlling a two-bladed pitchable swept-blade wind turbine in extreme wind conditions is described, wherein when extreme conditions are detected or forecast for the wind turbine, the wind turbine blades are pitched such that they will stabilise in a substantially horizontal arrangement. The blades can be yawed such that the tip ends of the wind turbine blades point in the same direction towards the surface level, thereby lowering the centre of mass of the rotor assembly of the wind turbine blades and the rotor hub. The lower centre of mass of the assembly results in the stabilisation of the blades in a substantially horizontal position, resulting in a reduced surface area of the blades exposed to the extreme wind forces. This reduced surface area provides for a reduction in the extreme loads which may be experienced by the wind turbine in such extreme wind conditions.

Description

technical field [0001] The present invention relates to a wind turbine and a method of controlling the same, in particular to a method of controlling the wind turbine to reduce the maximum loads experienced by the wind turbine under extreme wind conditions. Background technique [0002] Wind turbines are typically located in areas with relatively predictable wind patterns, eg, wind patterns varying between ~15-25m / s. However, during storm conditions, wind speeds can often reach extreme levels that can damage wind turbine structures. For example, offshore wind turbine installations may experience typhoon or hurricane conditions where wind speeds in gusts may exceed 70m / s. High wind speeds mean that wind turbines used in sites prone to extreme wind conditions must be constructed with strong materials and / or additional strengthening elements to withstand the high wind effects likely in these areas and be properly regulated for the place. Further, high wind speeds in gusts ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/00F03D1/06F03D7/04
CPCY02E10/723F03D7/0268Y02E10/721F03D7/0228F05B2240/30F05B2240/302Y02E10/72
Inventor A·V·雷布斯多夫
Owner YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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