Multi-rotor wind turbine yaw control
AssigneeVestas Wind Systems A/S
InventorJohnny Nielsen
Life of this patent
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Abstract
There is provided methods and systems for controlling a multi-rotor wind turbine generator having at least two rotor nacelle assemblies mounted to a support arrangement by a common yaw control system and each having a wind direction sensor mounted thereto configured to measure a wind direction relative to forward direction of its rotor nacelle assembly. The methods comprise the steps of measuring, for each rotor nacelle assembly, wind power parameter data over a plurality of relative wind directions, determining, based on the measured data, an optimum relative wind direction, either based on the average of two directions at which the parameter is maximum or on a combined data set, and controlling the yaw system accordingly.
Claims17
A method for controlling a multi-rotor wind turbine generator having at least two rotor nacelle assemblies mounted to a support arrangement by a common yaw control system and each having a wind direction sensor mounted thereto configured to measure a wind direction relative to forward direction of its rotor nacelle assembly, wherein the method comprises:
- receiving, for each rotor nacelle assembly, wind power parameter data that includes a wind power parameter for the rotor nacelle assembly over a plurality of wind directions measured by the wind direction sensor;
- determining, for each rotor nacelle assembly, the wind direction at which the wind power parameter has a maximum value;
- determining a control wind direction as an average wind direction of the determined wind directions at which the wind power parameter has its maximum value, further comprising separating the received wind power parameter data into relative wind direction bins according to the associated wind direction, in which each bin comprises a range of relative wind directions, determining an average wind power parameter value for each bin, and selecting the bin with the highest average wind power parameter value for use in determining the control wind direction;
- and
- controlling the common yaw control system based on the determined control wind direction.
A method for controlling a multi-rotor wind turbine generator having at least two rotor nacelle assemblies mounted to a support arrangement by a common yaw control system and each having a wind direction sensor mounted thereto configured to measure a wind direction relative to forward direction of its rotor nacelle assembly, wherein the method comprises:
- receiving, for each rotor nacelle assembly, wind power parameter data that includes a wind power parameter for the rotor nacelle assembly over a plurality of wind directions measured by the wind direction sensor;
- combining the wind power parameter data from each rotor nacelle assembly to provide an overall wind power parameter data set for the rotor nacelle assemblies over a plurality of common wind directions;
- determining, from the overall measurement wind power parameter data set, a control wind direction as the wind direction at which the wind power parameter has a maximum value, further comprising separating the received wind power parameter data into relative wind direction bins according to the associated wind direction, in which each bin comprises a range of relative wind directions, determining an average wind power parameter value for each bin, and selecting the bin with the highest average wind power parameter value for use in determining the control wind direction;
- and
- controlling the common yaw control system based on the determined control wind direction;
- and
- recalibrating each wind direction sensor to set the wind direction at which the wind direction sensor measures zero degrees as a value between the control wind direction and a current wind direction at which the wind direction sensor measures zero degrees.
A wind turbine yaw control system, comprising:
- a yaw motor configured to yaw at least two rotor nacelle assemblies;
- and
- a controller configured to perform an operation, comprising:
- receiving, for each rotor nacelle assembly, wind power parameter data that includes a wind power parameter for the rotor nacelle assembly over a plurality of wind directions measured by a wind direction sensor;
- determining, for each rotor nacelle assembly, the wind direction at which the wind power parameter has a maximum value;
- determining a control wind direction as an average wind direction of the determined wind directions at which the wind power parameter has its maximum value, further comprising separating the received wind power parameter data into relative wind direction bins according to the associated wind direction, in which each bin comprises a range of relative wind directions, determining an average wind power parameter value for each bin, and selecting the bin with the highest average wind power parameter value for use in determining the control wind direction;
- and
- controlling the wind turbine yaw control system based on the determined control wind direction.
Dependencies are inferred from the claim text.