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Lightning protection for segmented wind turbine blades

A technology for wind turbines and blades, which is applied in the field of lightning protection and can solve problems such as absent heating and blade damage

Pending Publication Date: 2022-03-01
LM WIND POWER AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A lightning strike directly into the laminated structure can cause damage to the blade, which includes electrically conductive fibers, since the electrically conductive fibers will conduct current and thereby heat the absent (i.a.) greatly

Method used

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  • Lightning protection for segmented wind turbine blades
  • Lightning protection for segmented wind turbine blades
  • Lightning protection for segmented wind turbine blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0102] figure 1 A conventional modern upwind wind turbine 2 according to the so-called "Danish concept" is illustrated with a tower 4, a nacelle 6 and a rotor with a substantially horizontal rotor axis. 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 .

[0103] figure 2 A schematic view of an exemplary wind turbine blade 10 is shown. The wind turbine blade 10 has the shape of a conventional wind turbine blade, has a root end 17 and a tip end 15, and includes a root region 30 closest to the hub, a profile or airfoil region 34 furthest from the hub, and The transition region 32 between the airfoil region 30 and the airfoil region 34 . The blade 10 includes 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 mounted on the hub, and the trailing edge 20 facing the opposi...

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PUM

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Abstract

A wind turbine blade and a spar for structurally connecting a first blade section and a second blade section of a wind turbine blade are disclosed. The spar includes a first fiber reinforced element extending parallel to the spar axis. The spar includes an electrically conductive beam jacket surrounding a beam jacket angular distance of the spar about at least a spar axis and extending longitudinally from a fourth beam axis position to a fifth beam axis position. A first fiber reinforced element is positioned between the conductive beam sheath and the spar axis.

Description

technical field [0001] The present disclosure relates to lightning protection of wind turbine blades, and more particularly, the present disclosure relates to lightning protection of wind turbine blades comprising a first blade section and a second blade section, and optionally comprising More blade segments. Background technique [0002] As wind turbines and wind turbine blades increase in size, the risk of lightning strikes to wind turbines increases. It is therefore of increasing interest to provide wind turbines and especially wind turbine blades with lightning protection measures. [0003] It is known to provide blades for wind turbines with lightning receptors, inside the blades, in electrical connection with metallic down conductors capable of connecting the lightning current to earth. [0004] Wind turbine blades of fibre-reinforced polymers and in particular the aerodynamic shells of wind turbine blades are usually manufactured in a mould, wherein the pressure sid...

Claims

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Application Information

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IPC IPC(8): F03D1/06F03D80/30
CPCF03D1/0633F03D1/0675F03D80/30F05B2240/302Y02E10/72F05B2230/238F05B2280/6003
Inventor M·奥布里翁B·埃里克松
Owner LM WIND POWER AS