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.
CN101008374AActive Publication Date: 2007-08-01GENERAL ELECTRIC RENOVABLES ESPANA SL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GENERAL ELECTRIC RENOVABLES ESPANA SL
Publication Date
2007-08-01

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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.
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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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