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US 10,655,601 B2Granted
Method for the individual pitch control of rotor blades of a wind turbine, and wind turbines
AssigneeFos4X GmbH
InventorsMathias Müller, Matthias Schubert
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Abstract
A method for the individual pitch control of the rotor blades of a wind turbine is provided herein. In some embodiments, the method includes measuring an acceleration by an acceleration sensor in a rotor blade of the wind turbine; high-pass filtering of a signal of the acceleration sensor in order to determine a time-variant variable; and setting the pitch of the first rotor blade of the wind turbine using the time-variant variable, the pitch setting being part of an individual pitch control.
Claims21
A method for the individual pitch control of rotor blades of a wind turbine, comprising:
- measuring acceleration by means of a fiber-optic acceleration sensor in a rotor blade of the wind turbine;
- opto-electronically converting a signal of the fiber-optic acceleration sensor;
- filtering the opto-electronically converted acceleration signal by means of an analog anti-aliasing filter;
- high-pass filtering the signal of the fiber-optic acceleration sensor to determine a time-variable parameter, and
- setting the pitch of the rotor blade of the wind turbine using the time-variable parameter, said pitch setting being performed in the course of an individual pitch control.
2 more elements
A wind turbine, comprising:
- a first rotor blade mounted to a hub;
- a first drive unit for rotating the first rotor blade for a pitch control of the first rotor blade;
- at least one second rotor blade mounted to the hub;
- at least one second drive unit for rotating the second rotor blade for a pitch control of the second rotor blade, wherein the second drive unit is controllable independent of the first drive unit;
- a control unit for controlling at least the first drive unit;
- a fiber-optic acceleration sensor in the wind turbine's first rotor blade;
- an opto-electronic converter for converting a signal of the fiber-optic acceleration sensor;
- and
- an analog anti-aliasing filter configured to filter the opto-electronically converted acceleration signal,
- wherein the control unit is configured to control pitching of the first rotor blade using a time-variable parameter, and
- wherein the time-variable parameter is determined by high-pass filtering the signal of the fiber-optic acceleration-sensor.
8 more elements
Dependencies are inferred from the claim text.