Back to results
US 11,614,071 B2Granted
Method for operating a wind turbine, wind turbine and wind park
AssigneeWobben Properties GmbH
InventorsRalf Messing, Carl Michael Schwarz
Life of this patent
Estimating the term…
Abstract
Provided is a method for operating a wind turbine, an associated wind turbine and a wind park. The method comprises a) providing an indicator for the occurrence of a flow separation on a pressure side of a rotor blade of a rotor of the wind turbine, and b) changing an operational management of the wind turbine using the indicator, wherein the indicator comprises a pitch angle of the rotor blade. By using the pitch angle as an indicator, a flow separation on the pressure side of the rotor blade can be effectively prevented.
Claims17
A method, comprising:
- operating a wind turbine, the operating comprising:
- providing an indicator for an occurrence of a flow separation on a pressure side of a rotor blade of a rotor of the wind turbine;
- and
- changing an operational management of the wind turbine based on the indicator,
- wherein the indicator includes a pitch angle of the rotor blade,
- wherein the wind turbine is operated with reduced nominal power level in a reduced power mode, and wherein changing the operational management comprises increasing a rotational speed of the rotor.
3 more elements
A wind turbine comprising:
- an aerodynamic rotor configured to be operated with a rotation speed,
- a rotor blade coupled to the aerodynamic rotor, the rotor blade having a longitudinal axis and comprising:
- a pressure side and a suction side opposite the pressure side,
- a pitch adjuster for rotational movement of the rotor blade about the longitudinal axis for setting a pitch angle, and
- a controller configured to:
- provide a critical value indicator for an onset of a flow separation on the pressure side of the rotor blade, wherein the indicator includes the pitch angle,
- control an operating point of the wind turbine such that the indicator remains below the critical value indicator,
- operate the wind turbine in a reduced power mode with reduced nominal power level, and
- increase the rotation speed in a reduced power mode such that the indicator remains below the critical value indicator.
6 more elements
Dependencies are inferred from the claim text.