Patent ID: 9644614
Date: 2017-05-09
CPC Classifications: F03D,Y02E

Claim:
1. Lightning protection system for a wind turbine with a tower, a nacelle at a top of the tower, a blade hub rotating about a rotational axis at a front end of the nacelle and a blade attached to the blade hub, comprising: an inner conductor adapted to be arranged inside the blade; an outer conductor in electrical communication with the inner conductor and adapted to be arranged outside the blade; a collecting conductor in electrical communication with the outer conductor and adapted to be arranged at the front end of the nacelle; and a down-conductor adapted to be grounded and in electrical communication with the collecting conductor, wherein the outer conductor and the collecting conductor are similarly distanced from the rotational axis when the collecting conductor is arranged at the front end of the nacelle relative to the rotational axis; wherein a sliding connection is present between the outer conductor and the collecting conductor; and wherein the outer conductor is adapted to attach to the blade such that the outer conductor is rotatable with a pitch change of the blade and slideable along the collecting conductor.