System and methods for reducing wind turbine noise
First Claim
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1. A method for reducing noise generated by a wind turbine, said method comprising:
- measuring a reference temperature of the wind turbine, the wind turbine having a rotor blade, wherein the reference temperature comprises a leading edge surface temperature of a leading edge portion of the rotor blade;
regulating a trailing edge surface temperature of a trailing edge portion of the rotor blade;
measuring the trailing edge surface temperature; and
regulating the trailing edge surface temperature to maintain a predetermined temperature differential between the reference temperature and the trailing edge surface temperature.
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Abstract
A method for reducing noise generated by a wind turbine includes measuring a reference temperature of the wind turbine. The method also includes regulating a trailing edge surface temperature of a trailing edge portion of a rotor blade attached to the wind turbine. In addition, the method includes measuring the trailing edge surface temperature. Further, the method includes regulating the trailing edge surface temperature to maintain a predetermined temperature differential between the reference temperature and the trailing edge surface temperature.
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Citations
20 Claims
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1. A method for reducing noise generated by a wind turbine, said method comprising:
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measuring a reference temperature of the wind turbine, the wind turbine having a rotor blade, wherein the reference temperature comprises a leading edge surface temperature of a leading edge portion of the rotor blade; regulating a trailing edge surface temperature of a trailing edge portion of the rotor blade; measuring the trailing edge surface temperature; and regulating the trailing edge surface temperature to maintain a predetermined temperature differential between the reference temperature and the trailing edge surface temperature. - View Dependent Claims (2, 3, 4)
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5. A method for reducing noise generated by a wind turbine, said method comprising:
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measuring a reference temperature of the wind turbine, the wind turbine having a rotor blade, wherein the reference temperature comprises a leading edge surface temperature of a leading edge portion of the rotor blade; regulating a trailing edge surface temperature of a trailing edge portion of the rotor blade;
measuring the trailing edge surface temperature; andregulating the trailing edge surface temperature to maintain a predetermined temperature differential between the reference temperature and the trailing edge surface temperature, wherein regulating the trailing edge surface temperature comprises actuating a power supply to supply power to a heating element coupled to the trailing edge portion of the rotor blade, wherein regulating the trailing edge surface temperature to maintain a predetermined temperature differential comprises; calculating a temperature difference value between the reference temperature and the trailing edge surface temperature using a controller; and regulating the supply of power from the power supply to the heating element using the controller. - View Dependent Claims (6, 7)
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8. A method for assembling a wind turbine, the wind turbine including at least one rotor blade having a trailing edge, a leading edge, a root, and a tip located at a spanwise distance from the root, the wind turbine further including a trailing edge portion defined adjacent the trailing edge of the rotor blade, said method comprising:
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coupling a heating element to the trailing edge portion of the rotor blade; electrically coupling a power supply to the heating element; coupling a first temperature sensor to the leading edge portion of the rotor blade, wherein the first temperature sensor is configured to measure a leading edge surface temperature of the leading edge portion of the rotor blade; coupling a second temperature sensor to the trailing edge portion of the rotor blade, wherein the second temperature sensor is configured to measure a surface temperature of the trailing edge portion of the rotor blade; and coupling a controller to the wind turbine, wherein the controller is configured to maintain a predetermined temperature differential between the ambient air temperature of the airflow and the surface temperature of the trailing edge portion of the rotor blade. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A wind turbine system comprising:
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a rotor comprising a hub and at least one rotor blade coupled to said hub, said at least one rotor blade comprising; a body comprising a pressure side surface, a suction side surface, a leading edge, and a trailing edge, said body further comprising a trailing edge portion defined adjacent said trailing edge; and a heating element coupled to said trailing edge portion;
a first temperature sensor configured to measure a first surface temperature of said at least one rotor blade proximate said leading edge;
a second temperature sensor configured to measure a second surface temperature of said at least one rotor blade proximate said trailing edge portion;a power supply electrically coupled to said heating element; and a control system coupled to said first temperature sensor and said second temperature sensor, said control system configured to operate said beating element by receiving a first measured surface temperature signal from said first temperature sensor, receiving a second measured surface temperature signal from said second temperature sensor, and actuating said power supply to achieve a predetermined temperature differential between the first surface temperature and the second surface temperature. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification