Wind turbine, wind turbine controller and method for controlling a wind turbine
AssigneeGeneral Electric Company
InventorDetlef Menke
Life of this patent
Estimating the term…
Abstract
A wind turbine having at least one rotor blade attached to a rotor hub is provided, wherein the wind turbine further includes at least one sensor disposed at or near the rotor blade, the sensor being adapted to detect an aerodynamic condition of the rotor blade.
Claims18
A wind turbine comprising at least one rotor blade attached to a rotor hub, the wind turbine further comprising at least one sensor disposed at or near the at least one rotor blade, the at least one sensor being configured to detect an aerodynamic condition of the at least one rotor blade, wherein the aerodynamic condition is a stall condition;
- and
- wherein the at least one sensor comprises a vibration sensor configured to detect a vibrational condition of the at least one rotor blade.
A pitch control system for a wind turbine, comprising a first input terminal configured to receive an input from at least one sensor disposed at or near a rotor blade of said wind turbine, the at least one sensor comprises a vibration sensor configured to detect a vibrational condition of the rotor blade, the at least one sensor being configured to detect an aerodynamic condition of the rotor blade, wherein the aerodynamic condition to be detected is a stall condition of the rotor blade, and wherein the pitch control system is configured to control the pitch angle of said rotor blade on the basis of said at least one sensor input.
A method for controlling a wind turbine, comprising
- detecting a stall condition of at least one rotor blade of a wind turbine, wherein the stall condition is detected if a sensor signal indicative of acoustical noise venerated by the at least one rotor blade or a vibrational condition of said at least one rotor blade exceeds a predetermined threshold, and
- adjusting the pitch angle of said at least one rotor blade in order to reduce the stall condition.
Dependencies are inferred from the claim text.