Vestas Wind Systems A/s

Gurmukh Singh

Stephen Randall

Nathan A Brilliant

Lasse Lykkegaard

Toby Collard

Rens Christiaan Verhoef

The present disclosure provides a blade for a wind turbine, where the blade extends in a lengthwise direction between a root end and a tip end of the blade. The blade comprises a leeward shell portion and a windward shell portion, each of the shell portions defining respective inner and outer surfaces extending in a chordwise direction between a leading edge of the blade and a trailing edge of the blade. The blade further comprises a first windward reinforcement structure, a first leeward reinforcement structure, a second windward reinforcement structure, and a second leeward reinforcement structure, the reinforcement structures being arranged internally within the blade and extending in the lengthwise direction of the blade. The second windward and second leeward reinforcement structures are arranged closer to the trailing edge than the first windward reinforcement structure and the first leeward reinforcement structure, respectively, and the second windward reinforcement structure is longer than the second leeward reinforcement structure in the lengthwise direction.

Wind turbine blade with leeward reinforcement structures and windward reinforcement structures

A wind turbine blade comprising a leeward shell portion and a windward shell portion, each of the shell portions extending in a chordwise direction between a leading edge and a trailing edge of the wind turbine blade; a leading reinforcement arrangement comprising at least a leading leeward reinforcement structure engaging the leeward shell portion and a leading windward reinforcement structure engaging the windward shell portion; and a trailing reinforcement arrangement comprising at least a trailing leeward reinforcement structure engaging the leeward shell portion and a trailing windward reinforcement structure engaging the windward shell portion. The trailing windward reinforcement structure has a first stiffness in the lengthwise direction and the trailing leeward reinforcement structure has a second stiffness in the lengthwise direction, wherein the first stiffness is greater than the second stiffness at a chordwise plane of the wind turbine blade.

Wind turbine blade

A wind turbine rotor blade having a blade shell with a generally chordwise layup of fibre plies and a generally spanwise spar cap. A lightning conductor extends over the spar cap, and the spar cap includes conductive material. An equipotential bonding element electrically bonds the lightning conductor to the spar cap. The equipotential bonding element extends between an outboard edge of one stack of the fibre plies and an inboard edge of an adjacent stack of the fibre plies, which overlap to define an overlapping edge region.

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Skjern, Denmark

Gurmukh Singh