IMPROVING OR OPTIMIZING WIND TURBINE OUTPUT BY DETECTING FLOW DETACHMENT
A method for controlling a wind power plant is described. The method comprises measuring a sound emission by means of at least one pressure sensor secured to the rotor blade; detecting a characteristic aeroacoustic sound for at least one stall based on the sound emission; and controlling or regulating one or several components of the wind power plant based on the detection of the characteristic aeroacoustic sound of the stall.
1 . A method for controlling a wind power plant, comprising:
measuring a sound emission by means of at least one pressure sensor secured to the rotor blade;
detecting a characteristic aeroacoustic sound for at least one stall based on the sound emission; and
controlling or regulating one or several components of the wind power plant based on the detection of the characteristic aeroacoustic sound of the stall.
2 . The method according to claim 1 , wherein the one or several components are a changeable or movable vortex generator.
3 . The method according to claim 2 , wherein the vortex generator can be moved or changed between an active and a passive state.
4 . The method according to claim 1 , wherein several pressure sensors are made available on the rotor blade, in particular along a longitudinal axis of the rotor blade.
5 . The method according to claim 2 , wherein several vortex generators are made available along a longitudinal axis of the rotor blade.
6 . The method according to claim 1 , wherein several pressure sensors are made available along a longitudinal axis of the rotor blade, and several vortex generators are made available along a longitudinal axis of the rotor blade, in particular wherein the vortex generators in areas defined along the longitudinal axis of the rotor blade can be individually controlled per area.
7 . The method according to claim 1 , wherein one or several desired values for at least one of the parameters selected from the group comprised of a high-speed number and a pitch angle are determined based on the detection of the characteristic aeroacoustic sound.
8 . The method according to claim 7 , wherein the one or several desired values are determined by means of a lookup table, in particular wherein the one or several desired values are ascertained through interpolation.
9 . The method according to claim 1 , wherein the at least one pressure sensor is a fiberoptic sensor.
10 . A device for controlling a wind power plant with a rotor, comprising:
at least one pressure sensor secured to a rotor blade; and
an evaluation unit for detecting a characteristic aeroacoustic sound for at least one stall based on the sound emission; and controlling or regulating one or several components of the wind power plant based on the detection of the characteristic aeroacoustic sound.
11 . The device according to claim 10 , further comprising:
a computer program product which can be loaded into a memory of a digital computing device, and comprises software code sections with which the steps according to claim 1 can be implemented with the computer program product running on the computing device.
12 . A wind power plant with the device according to claim 10 .