| CPC F03D 80/30 (2016.05) [F03D 1/0675 (2013.01); F03D 80/301 (2023.08); F03D 1/0679 (2023.08)] | 16 Claims |
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1. A blade for a wind turbine, the blade having a blade tip and comprising:
at least one blade component, wherein at least one section of the blade component facing the blade tip is reinforced by carbon fibers spanning a length of the blade past a root of the blade toward the blade tip and configured to reinforce the blade against bending loads on the blade, and
a lightning protection arrangement with a discharging conductor extending along the blade to discharge an electric current caused by a lightning striking into the blade, wherein the lightning protection arrangement includes:
at least one, electrically conductive, elongated and flat lightning receptor which is electrically connected with the discharging conductor, wherein the at least one elongated and flat lightning receptor is arranged at or near the outer surface of the blade and located between the at least one section of the blade component and the blade tip and extends at least partially from a trailing edge towards a leading edge of the blade, wherein the at least one elongated and flat lightning receptor is, seen in a direction towards the blade tip, spaced apart from the at least one section of the blade component to prevent flash-over, and
at least one electrically conductive lightning conductor protruding from the outer surface of the blade, wherein the at least one electrically conductive lightning conductor is located at or near the blade tip and is electrically connected with the discharging conductor,
wherein a distance between the carbon fibers and the lightning receptor is small enough that a lightning which would otherwise strike into the at least one blade component is attracted by the lightning receptor, and wherein the distance is large enough that the lightning receptor does not attract lightning which then strikes into the at least one blade component.
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