WIND TURBINE NOISE CONTROL METHODS
First Claim
1. A method of operating a wind turbine comprising at least one trailing edge control surface on at least one rotor blade, comprising operating the wind turbine in a first mode, in which a rotor blade angle of attack and a trailing edge control surface deflection are set according to one or more wind turbine control parameters, and selectively operating the wind turbine in a second, noise reduced, mode, in which for a given set of wind turbine control parameters, the trailing edge control surface deflection is increased towards the pressure side and the rotor blade angle of attack is decreased with respect to the first mode.
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Abstract
A wind turbine having at least one trailing edge control surface (10) on at least one rotor blade (5) is operated in a first mode, in which a rotor blade angle of attack and a trailing edge control surface deflection are set according to one or more wind turbine control parameters. The turbine is selectively operated in a second, noise reduced, mode, in which for a given set of wind turbine control parameters, the trailing edge control surface deflection is increased towards the pressure side and the rotor blade angle of attack is decreased with respect to the first mode. In the second mode, for a given set of control parameters, the loading on the blade (5) is on average closer to a hub than in the first operating mode.
26 Citations
18 Claims
- 1. A method of operating a wind turbine comprising at least one trailing edge control surface on at least one rotor blade, comprising operating the wind turbine in a first mode, in which a rotor blade angle of attack and a trailing edge control surface deflection are set according to one or more wind turbine control parameters, and selectively operating the wind turbine in a second, noise reduced, mode, in which for a given set of wind turbine control parameters, the trailing edge control surface deflection is increased towards the pressure side and the rotor blade angle of attack is decreased with respect to the first mode.
- 4. A method of operating a wind turbine comprising at least one rotor blade having one or more trailing edge control surfaces, comprising operating the wind turbine in a first mode, in which a rotor blade angle of attack and trailing edge control surface deflections are set according to one or more wind turbine control parameters, and selectively operating the wind turbine in a second, noise reduced, mode, in which for a given set of control parameters, the loading on the blade is on average closer to a hub than in the first operating mode.
Specification