Vestas Wind Systems A/s

Tim Behrens

Carsten Hein Westergaard

Tian Yong Lim

Damien Castaignet

Chee Kang Lim

Yun Chong Gabriel Chang

Li Hong Idris Lim

Teck Bin Arthur Lim

Whye Ghee Kim

Kok Leong Chong

Loh Wuh Ken

Joshua Bryant

Bradley Johnson

Ashish Sareen

The invention involves a wind turbine comprising at least one blade () in turn comprising a blade body (), lift-regulating means () adapted for movement in relation to the blade body () so as to regulate the lift of the blade, and load sensing means () for determining a load acting on the lift-regulating means (), the wind turbine further comprising an actuation control unit () adapted to control the movement of the lift-regulating means () based on output from the load sensing means (). In addition to output from the load sensing means (), the actuation control unit () is adapted to control the movement of the lift-regulating means () based on the movement of the lift-regulating means ().

Control of wind turbine blade lift regulating means

A wind turbine blade extending in a longitudinal direction from a root end to a tip end and defining an aerodynamic airfoil cross-section between a leading edge and a trailing edge in a chordwise direction transverse to the longitudinal direction, the aerodynamic airfoil cross-section having an effective camber in the chordwise direction; the wind turbine blade comprising: blade body; first device for modifying the aerodynamic surface or shape of the blade, the position and/or movement of the first device relative to the blade body being controlled by a first actuation mechanism; second device for modifying the effective camber of the airfoil cross section; herein, in use, the first device modifies the aerodynamic surface or shape of the blade at a frequency up to a first maximum frequency and the second device modifies the effective camber of the airfoil cross section at a frequency up to a second maximum frequency, the second maximum frequency being higher than the first maximum frequency.

Wind turbine rotor blade

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København S, Denmark

Tim Behrens