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Systems and methods for directing a current

A current and down-conducting technology, applied in conductor discharge/electricity consumption, cable installation, static electricity, etc., can solve the problem of component damage to components, etc.

Active Publication Date: 2007-08-01
GENERAL ELECTRIC RENOVABLES ESPANA SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the event of a lightning strike to the rotor blades, there is a risk of current pathing through the rotor blades and into the components to damage them

Method used

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  • Systems and methods for directing a current
  • Systems and methods for directing a current
  • Systems and methods for directing a current

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] FIG. 1 is a diagram of an embodiment of a wind turbine 100 including a nacelle 102 , a tower 104 , a rotor 106 having at least one rotor blade 108 and a rotating hub 110 . A nacelle 102 is mounted atop a tower 104 , a portion of which is shown in FIG. 1 . Rotor blades 108 are connected to hub 110 .

[0019] FIG. 2 is a diagram of an embodiment of a system 111 including nacelle 102 , tower 104 , and hub 110 . Nacelle 102 houses a control board 112 including a processor 113 . As used herein, the term processor is not limited to those integrated circuits referred to as processors in the prior art, but broadly refers to controllers, microcontrollers, microcomputers, programmable logic controllers, application-specific integrated circuit and any other programmable circuit.

[0020] The hub 110 contains a variable blade pitch drive 114 . Nacelle 102 also houses a portion of main rotor shaft 116 , gearbox 118 , generator 120 , and coupling 122 . Yaw drive 124 and yaw plat...

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PUM

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Abstract

A method for directing a current generated by a lightning striking a wind turbine (100) is described. The method includes directing the current from a main shaft (116) of the wind turbine to a brake disc (202) attached to the shaft, and directing the current from the brake disc to one of a spark gap (224) and a roller mechanism (302) coupled to a down-conductor at a ground voltage.

Description

technical field [0001] The present invention relates generally to a wind turbine, and more particularly to a method and system for directing electrical current in a wind turbine. Background technique [0002] A rotor blade of a wind turbine has an external lightning downconductor arranged on the outer surface of the blade or an internal lightning downconductor inside the blade. The internal lightning down conductor is provided with a lightning receiver which is a metal through connection between the internal lightning down conductor of the blade and the outer surface of the blade. The purpose of this receiver is to attract the lightning so that the lightning current generated by the lightning can be directed downwards through the lightning down conductor installed inside the rotor blade. [0003] The use of conductive materials on components within a wind turbine, such as the brake pads, the generator and the bearings supporting the generator, necessitates lightning protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/00H05F3/04
CPCF03D11/00Y02E10/726F03D11/0033Y02E10/722H02G13/00H02G13/80H02G13/40F03D80/00F03D80/30F03D80/70F03D15/20Y02E10/72
Inventor F·克鲁格S·布罗菲尔德R·泰希曼
Owner GENERAL ELECTRIC RENOVABLES ESPANA SL
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