Spar cap structures comprising a conductive block

Abstract

There is provided a spar cap structure for a wind turbine blade. The spar cap structure comprises a main body and a lightning conductor assembly. The main body comprises a first side and a second side. The main body comprises a plurality of layers of one or more carbon fiber components, each of these layers being arranged one on top of the other between the first and the second sides, whereby the main body spans a thickness. The lightning connector assembly is arranged at one of the sides of the main body. The lightning connector assembly comprises a conductive block electrically connected to the main body. The conductive block spans a height from an outer end to an inner end of the lightning conductor assembly in a direction substantially parallel to the thickness of the main body. The inner end is connectable to a down conductor of a lightning protection system of a wind turbine blade.

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