Vestas Wind Systems A/s

Francesco Grasso

Stephen Randall

Thomas Potentier

Andrea Attorni

A horizontal axis wind turbine comprising a rotor having a plurality of blades, the rotor having a radius of at least 80 meters, the blades comprising: a root end and a tip end; a leading edge and a trailing edge; a shoulder between the root end and the tip end where a chord length defined between the leading edge and the trailing edge is at a maximum; wherein: Solis at least 0.0140 at 0.7R; Solis at least 0.0116 at 0.8R; Solis at least 0.0090 at 0.9R; Solbeing the combined radius specific solidity of the blades.

Wind turbine with particular combined radius specific solidities along the rotor radius

A horizontal axis wind turbine comprising a rotor having a plurality of blades, the rotor having a radius R of at least 80 meters, the blades comprising: a root end and a tip end, the blades extending in a spanwise direction from the root end to the tip end; a leading edge and a trailing edge, the blades extending in a chordwise direction along a chord from the leading edge to the trailing edge; a shoulder between the root end and the tip end where a chord length defined between the leading edge and the trailing edge is at a maximum; the blades being twisted between the root end and the tip end and the twist is defined by a twist distribution curve along the spanwise direction of the blades, each blade further comprising: an inboard region between the root end of the blade and the shoulder of the blade; an outboard region between a rotor radius 0.9R and the tip end of the blade; and a mid-board region located between the inboard region and the outboard region; a noise reduction feature in the mid-board region of the blade, the noise reduction feature projecting from the trailing edge and extending from a first radial position Rtoward the tip end; wherein the twist distribution curve comprises a first inflection point in the vicinity of the first radial position R

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Oporto, Portugal

Francesco Grasso