Method of rotor-stall prevention in wind turbines
AssigneeGeneral Electric Company
InventorLeonardo Cesar Kammer
Life of this patent
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Abstract
A method for operating a wind turbine is based on providing a wind turbine that includes a control system programmed to adjust a blade pitch angle of one or more rotor blades without knowledge of rotor blade efficiency. A blade pitch angle of one or more rotor blades is adjusted in response to the current conditions experienced by the wind turbine to provide a blade pitch angle that is greater than or equal to a blade pitch angle necessary to maintain a predetermined minimum rotor stall margin according to modeled aerodynamic performance of the rotor blades such that continuous operation of the wind turbine is maintained without transitions to the stalled mode.
Claims20
A method for operating a wind turbine comprising:
- providing a wind turbine comprising a control system, predetermined turbine sensors, and at least one rotor blade having an adjustable pitch angle that is adjusted via the control system;
- programming the control system to adjust a blade pitch angle of one or more rotor blades, according to modeled aerodynamic performance of the rotor blades, in order to maintain continuous operation of the wind turbine without transitions to a stalled mode;
- scanning the predetermined turbine sensors via the control system to provide current conditions experienced by the wind turbine;
- and
- adjusting a blade pitch angle of one or more rotor blades in response to the current conditions experienced by the wind turbine to provide a blade pitch angle that is greater than or equal to a blade pitch angle necessary to maintain a predetermined minimum rotor stall margin, according to the modeled aerodynamic performance of the rotor blades, such that continuous operation of the wind turbine is maintained without transitions to the stalled mode.
A wind turbine comprising:
- at least one rotor blade having an adjustable pitch angle;
- one or more turbine sensors;
- and
- a control system programmed to adjust a blade pitch angle of one or more rotor blades, according to modeled aerodynamic performance of the rotor blades, in order to maintain continuous operation of the wind turbine without transitions to a stalled mode.
Dependencies are inferred from the claim text.