Vestas Wind Systems A/s

Christian Gjerløv

Brian Jørgensen

Kasper Zinck Østergaard

Imad Abdallah

Kenneth Tougaard Simonsen

Aleks Kvartborg Jakobsen

Leo Thesbjerg

Jesper Graugaard

Martin Jørgensen

Kenneth Simonsen

Methods and systems [are disclosed] for controlling wind turbines having a tower, a nacelle, and a rotor with a blade and hub. The wind turbine may further include a yaw drive system for rotating the nacelle relative to the tower about a substantially vertical axis, and/or a pitch drive system for rotating the blade of the rotor around a longitudinal axis of the blade. During high wind speeds when the wind turbine may be in a stand-still and non-power-producing situation, the yaw drive system may continuously or periodically rotate the nacelle to vary a direction of the rotor with respect to the wind. Further, the pitch drive system may continuously or periodically rotate the blade to vary a direction of the blade with respect to the wind. In this manner, the wind turbine may be safely controlled during high winds.

Wind turbine stand still load reduction

For optimising annual energy production in a wind turbine, the invention provides a method by which operation of the turbine in accordance with different pre-specified modes depending on the wind direction towards the turbine is enabled. The modes may include pitch and/or power control strategies. The invention further provides a control system for a wind turbine adapted to operate in accordance with the method, and a wind turbine with such a control system.

Wind turbine

Growing community of inventors

Aarhus N, Denmark

Christian Gjerløv