Wind turbine with blade pitch control to compensate for wind...

F - Mech Eng,Light,Heat,Weapons – 03 – D

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F03D 7/02 (2006.01) F03D 7/00 (2006.01) F03D 7/04 (2006.01)

Patent

CA 2664080

A wind turbine rotor load control. The pitch of the blades is controlled in a conventional manner by a command component, a rotor blade pitch command signal. A storage contains stored values of a set of moments for various wind speeds. A moment sensor provides a moment signal output. An instantaneous wind speed indicator provides an instantaneous wind speed value output. A conversion logic connected to the moment signal and to the instantaneous wind speed value, provides a calculated pitch modulation command. Combining logic connected to the calculated blade pitch modulation command and to the collective pitch command, provides a combined blade pitch command, which includes compensation for instantaneous moment deviations of the wind turbine.

L'invention concerne une commande de charge de rotor d'éolienne. Le pas des pales est commandé de façon conventionnelle, par un composant de commande, un signal de commande de pas de pale de rotor. Une mémoire contient des valeurs mémorisées d'un ensemble de moments pour différentes vitesses du vent. Un capteur de moment fournit une sortie de signal de moment. Un indicateur de vitesse du vent instantané fournit une sortie de valeur de la vitesse du vent instantanée. Une logique de conversion, reliée au signal de moment et à la valeur de la vitesse du vent instantanée, fournit une commande de modulation de pas calculée. Le fait d'associer la logique reliée à la commande de modulation de pas calculé et à la commande de pas collective, fournit une commande de pas de pale combinée qui inclut une compensation pour des déviations de moment instantanées de l'éolienne.

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