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AssigneeVestas Wind Systems A/S
InventorsLars Risager, Søren Dalsgaard, Jacob Krogh Kristoffersen, Jesper Sandberg Thomsen, Søren Sørensen, Asger Svenning Andersen
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A method of controlling a wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub. The method comprises dividing the rotor plane into a number of sectors, determining the individual sectors for each blade during the rotation by means of an azimuth angle sensor, and obtaining blade sensor data from a blade sensor on an individual blade relating to a sector, and comparing the obtained data with data relating to the same sector and representing blade sensor data on other blades. When an event is detected in a given sector, an individual pitch contribution is determined in the sector, and the blades are then pitched according to this individual pitch contribution for that given sector at least partly during passage of the sector.
A method of controlling a wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub, the method comprising:
A wind turbine comprising blades attached to a rotor hub for rotation in a rotor plane and a control system for individually pitching the blades relative to the hub, where the control system, for individual sectors of the rotor plane determined by means of an azimuth angle sensor, is configured to detect an event by obtaining blade sensor data relating to a sector from a blade sensor on an individual blade at least partly during a passage of the sector during the rotation, and compare the obtained data with data relating to the same sector and representing blade sensor data on the same or another blade at least partly during an earlier passage of the same sector during the rotation, and determine an individual pitch contribution for a given sector only when an event is detected in said sector, the wind turbine further comprising a pitch system configured to individually pitching the blades according the individual pitch contribution for the given sector at least partly during blade passage of the sector.
(canceled)
A control system for individually pitching turbine blades relative to a hub of a wind turbine, the blades being attached to the rotor hub for rotation in a rotor plane, and where the control system, for individual sectors of the rotor plane determined by means of an azimuth angle sensor, is configured to detect an event by obtaining blade sensor data relating to a sector from a blade sensor on an individual blade at least partly during a passage of the sector during the rotation, and compare the obtained data with data relating to the same sector and representing blade sensor data on the same or another blade at least partly during an earlier passage of the same sector during the rotation, and determine an individual pitch contribution for a given sector only when an event is detected in said sector, the control system further configured to set the blade pitch command according the individual pitch contribution for the given sector at least partly during blade passage of the sector.
Dependencies are inferred from the claim text.