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1. (WO2018145715) METHOD AND SYSTEM FOR CONTROLLING A WIND TURBINE

Pub. No.:    WO/2018/145715    International Application No.:    PCT/DK2018/050029
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Thu Feb 08 00:59:59 CET 2018
IPC: F03D 7/02
Applicants: VESTAS WIND SYSTEMS A/S
Inventors: GUPTA, Anurag
Title: METHOD AND SYSTEM FOR CONTROLLING A WIND TURBINE
Abstract:
A method for controlling a wind turbine, the wind turbine comprising a wind turbine blade, the method comprising: measuring one or more wind turbine parameters; determining, based on the one or more wind turbine parameters, whether negative stall will occur at an outboard region of the wind turbine blade; generating a first signal if it is determined negative stall will occur at the outboard region of the wind turbine blade; and activating a lift disrupting device for disrupting airflow over the suction side of the wind turbine blade in response to the generated first signal such that the lift generated by the wind turbine blade is reduced; wherein the lift disrupting device for disrupting airflow over the suction side of the wind turbine blade is disposed at a mid-board region of the wind turbine blade.