Lightning conductor system for wind generator blades comprising carbon fibre laminates

A technology for wind turbines, lightning protection, applied in the direction of wind engines, wind turbine components, nanotechnology for materials and surface science, capable of solving problems such as potential differences

Inactive Publication Date: 2007-12-26
GAMESA INNOVATION & TECH SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Different metal base systems have attempted to prevent the problem of introducing potential differences in carbon fiber compounds, but none have yet been shown to be effective in solving this problem

Method used

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  • Lightning conductor system for wind generator blades comprising carbon fibre laminates
  • Lightning conductor system for wind generator blades comprising carbon fibre laminates
  • Lightning conductor system for wind generator blades comprising carbon fibre laminates

Examples

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Embodiment Construction

[0024] Lightning protection system on a blade 1 comprising a carbon fiber laminate 2, which is the subject of the present invention, as shown in Figure 1, adopts a lightning protection system based on a main cable 6 in which other branches are added To connect the main cables directly to the carbon fiber layer 2, using this method ensures that the system is all equipotential.

[0025] As shown in Figures 2 and 3, the branches are formed using two connections to each of the two carbon fiber layups 2, one connection at the upper part of the beam 10 and one connection at the lower part of the beam 10 as shown in the previous figure . Said laminations are arranged on both sides facing the blade shell called airfoil 4 . The connection is made in the region of the root of the beam and in the region of the tip of the beam in such a way that the airfoil 4 of the beam becomes an optional lightning path. The system used is of differential nature due to the method of connection between...

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PUM

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Abstract

The invention relates to a lightning conductor system for a wind generator blade, comprising several connections which are disposed on the carbon fibre laminates (2) of the blade (1), forming an equipotential surface on the flanges (4) of the beam (10) by means of branches from a main cable (6) through respective auxiliary cables (5). According to the invention, the auxiliary cables are connected to flat metal bars (3), which provide a direct connection with the above-mentioned carbon fibre laminates (2), and are installed during the process involving the lamination and curing of the blade (1). Alternatively, the auxiliary cables are connected to preferably-conical metal pins which pass through the hybrid laminate. A nanocomposite-based conductive resin (11) is disposed immediately adjacent to the connection. In the case of a hybrid laminate comprising layers of carbon fibre and layers of glass fibre, the different layers are made equipotential by means of holes, discontinuous surfaces or hollow openings in the glass fibre layers.

Description

technical field [0001] The subject of the invention is a protection system for transmitting and receiving lightning in a wind turbine blade. The important feature is that this part of the blade is a carbon fiber layup. Background technique [0002] The recent use of carbon fiber in the manufacture of wind turbine blades, although its use is quite widespread among important companies in this field, experience with lightning protection methods is limited, and no common knowledge has yet demonstrated its technology effectiveness. [0003] Applicable regulations for wind turbines and existing literature on the subject address effective methods of protecting fiberglass blades from lightning strikes, which include lightning protection systems based on temporary receptors placed along the length of the blade, including the The receiver is connected to the root of the blade and passes through the cables inside the blade. [0004] In this regard, the following patent may be cited,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00H02G13/00F03D80/30
CPCY02E10/722B82Y30/00F03D11/0033F03D80/30Y02E10/72F03D80/00H02G13/00
Inventor 何塞伊格纳西奥·略伦特冈萨雷斯塞尔西奥·贝莱斯奥里亚
Owner GAMESA INNOVATION & TECH SA
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