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US 7,476,985 B2Granted
Method of operating a wind turbine
AssigneeGamesa Innovation & Technology, S.L.
InventorJose Ignacio Llorente Gonzalez
Life of this patent
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Abstract
In a wind turbine and in a method of operating a wind turbine, the rotor speed and/or the generator power are reduced in response to variables exceeding predetermined values, the variables being one or more of wind direction relative to horizontal direction of main shaft of turbine, turbulence of the wind, or any other variable sensed by one or more sensors mounted on components of turbine.
Claims7
An operating method for a wind turbine which comprises a wind vane and an anemometer located at a nacelle of the wind turbine;
- a group of sensors selected from the group of strain gauges, accelerometers, pilot tubes, hot film sensors, and laser light or ultrasound sensors assembled on one or various blades;
- at least one of temperature, acceleration, and vibration sensors located on at least one of a drive train and a generator;
- acceleration, movement, or vibration sensors located on at least one of a tower of the wind turbine, its substructures, and the nacelle;
- and a system for measuring output power of the generator, the method comprising:
- reducing at least one of the speed of a rotor and the power of the generator when wind impacts the wind turbine at a speed of more than 25 m/s or in swell conditions for offshore wind turbines, in response to a plurality of variables formed based on the wind direction in relation to the horizontal direction of a main wind turbine shaft and on the wind turbulence.
2 more elements
Dependencies are inferred from the claim text.