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US 8,202,049 B2Granted
Independent blade pitch control
AssigneeCatch The Wind, Inc.
InventorsPhilip L. Rogers, Frederick C. Belen, Jr., Elizabeth A. Dakin, Priyavadan Mamidipudi
Life of this patent
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Abstract
A system and method are provided to increase efficiency of turbines in wind farms. A sensor is configured to generate a wind map of an inflow of wind. A controller is configured to generate a control signal based the wind map. A pitch adjustment device configured to adjust pitch of a blade of the turbine based on the control signal.
Claims17
A system, comprising:
- a sensor configured to generate a wind map of an inflow of wind;
- a controller configured to generate a control signal based on the wind map;
- a pitch adjustment device configured to adjust pitch of a blade of a wind turbine based on the control signal;
- a yaw detection system configured to generate at least a transition yaw signal during a transition time period;
- wherein the controller is further configured to generate the control signal to control the pitch based on the transition yaw signal to reduce transient loads and vibration on the blade during the transition time period.
2 more elements
A method, comprising:
- determining a first value corresponding to a size of a wind turbine blade;
- determining a second value corresponding to a size of a wind turbine;
- determining a third value corresponding to a configuration of one or more controllers and one or more corresponding actuators associated with one or more sections of the wind turbine blade;
- determining a fourth value corresponding to a position of the wind turbine blade at a predetermined moment in time;
- determining control parameters based on the first, second, third and fourth values;
- accessing wind map data of an inflow of wind;
- determining at least one of yaw and tilt of the wind turbine;
- and
- controlling pitch of the one or more sections of the wind turbine blade based on the control parameters, the wind map data, and the at least one of the yaw and
- the tilt.
7 more elements
A method, comprising:
- generating a three-dimensional wind map of inflow wind to be received at a blade of a wind turbine;
- producing a control signal based on the wind map;
- adjusting a pitch of the blade of the wind turbine based on the control signal;
- measuring misalignment of the blade during a yaw transition period;
- producing a second control signal during the yaw transition period based on the misalignment;
- and
- adjusting the pitch of the blade based on the second control signal.
4 more elements
Dependencies are inferred from the claim text.