Method for wind turbine yaw control
AssigneeSiemens Aktiengesellschaft
InventorHenrik Stiesdal
Life of this patent
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Abstract
A method for yaw control for a wind turbine comprising a rotor with a rotor blade, the rotor defining a rotor axis and a rotor plane to which the rotor axis is perpendicular, in which the rotor axis is turned to minimize the yaw angle between the ambient wind direction and the rotor axis is provided, wherein the turning of the rotor axis is performed based on the measurement of a wind speed in the rotor plane at the rotor blade. Furthermore, a wind turbine which comprises a rotor which includes a rotor axis and a rotor plane perpendicular to the rotor axis and an anemometer for measuring the ambient wind speed is provided. The wind turbine further comprises an anemometer which is located such at a rotor blade at a particular distance from the rotor axis as to allow for measuring a wind speed in the rotor plane.
Claims12
A method for yaw control for a wind turbine having a rotor and a plurality of rotor blades, comprising:
- measuring an ambient wind speed;
- measuring a periodic variation of wind speed in a rotor plane during a rotation period of the rotor, the rotor defining a rotor axis and the rotor plane to which the rotor axis is perpendicular;
- and
- turning the rotor axis as to minimise the yaw angle error between ambient wind direction and the rotor axis, the turning based on the measured speed.
A wind turbine, comprising:
- a rotor having a rotor axis and a rotor plane perpendicular to the rotor axis;
- a blade connected to the rotor;
- a plurality of anemometers located at the rotor blade at different radii, the anemometers configured to measure a wind speed in the rotor plane;
- and
- a controller configured to control turning a rotor axis, based on the measured speed, as to minimise a yaw angle error between an ambient wind direction and the rotor axis.
Dependencies are inferred from the claim text.