Patent ID: 9157419
Filing Date: 2015-10-13
Classification: F03D,Y02E

Abstract:
1. A lightning protection system for a wind turbine, the wind turbine having an electrically grounded structure part, a main shaft electrically and mechanically connected therewith, a blade hub rotationally connected via a main bearing to the main shaft and a plurality of blades connected to the blade hub, the lightning protection system comprising: a down-conductor able to be attached inside one of the blades; a high voltage conductor for guiding lightning current, wherein a first end of the high voltage conductor is in electrical communication with the down-conductor; a high voltage contact attached inside the main shaft behind the main bearing at a side opposite to the blade hub, wherein a second end of the high voltage conductor is in electrical communication with the high voltage contact; wherein the high voltage conductor follows a path away from the front end of the blade hub; and wherein a lightning current is guided from the down-conductor via the high voltage conductor to the high voltage contact.