A METHOD FOR REDUCING BLADE FLAP LOADS IN A WIND TURBINE

A method for controlling a wind turbine (1) is disclosed. The wind turbine (1) comprises three or more wind turbine blades (4), and blade connecting wires (7), each blade connecting wire (7) extending between a connection point (8) on one wind turbine blade (4) and a connection point (8) on a neighb...

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Bibliographische Detailangaben
Hauptverfasser:	LARSEN, Torben Juul, NIELSEN, Thomas S. Bjertrup, SØRENSEN, Kim Hylling
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A method for controlling a wind turbine (1) is disclosed. The wind turbine (1) comprises three or more wind turbine blades (4), and blade connecting wires (7), each blade connecting wire (7) extending between a connection point (8) on one wind turbine blade (4) and a connection point (8) on a neighbouring wind turbine blade (4). The wind turbine (1) further comprises pre-tension wires (9), each pre-tension wire (9) being connected to one of the blade connecting wires (7) and to a pre-tension adjustment mechanism (10). The method comprises measuring at least one parameter of the wind turbine blades (4) of the wind turbine (1), and deriving an estimate for a blade flap load for each wind turbine blade (4) from the at least one measured parameter. The pre-tension adjustment mechanism (10) is controlled in response to the estimated blade flap loads of the wind turbine blades (4), thereby adjusting the pre-tension provided by the pre-tension wires (9).