Wind energy plant and drive device for adjusting a rotor blade

Details Wind energy plant and drive device for adjusting a rotor blade Wind energy plant and drive device for adjusting a rotor blade

F - Mech Eng,Light,Heat,Weapons

03

D

F03D 7/02 (2006.01) F03D 9/00 (2006.01)

Patent

CA 2758469

The invention relates to a wind energy plant comprising a rotor having a rotor hub which is mounted on a gondola and a plurality of rotor blades. An electric generator is connected to the rotor. The invention also relates to an electric drive device which is designed as a direct drive and used to adjust a rotor blade which is arranged in a concentric manner on the rotor hub in relation to rotor blade bearing and a permanently excited synchronous motor. A stator of the synchronous motor comprises a coil body which is mounted on the motor hub. A rotor of the synchronous motor is arranged at an axial distance with respect to the stator for forming an axially extending air gap. Said rotor also comprises a permanent magnet arrangement on a support plate which is connected to a rotor blade shaft.

L'invention concerne une éolienne équipée d'un rotor, qui comprend un moyeu de rotor disposé sur une nacelle et une pluralité de pales de rotor. Une génératrice électrique est reliée au rotor. En outre, chaque pale de rotor est réglée respectivement par une unité d'entraînement électrique se présentant sous la forme d'un entraînement direct, qui a un positionnement concentrique par rapport à un palier de pale de rotor sur le moyeu de rotor et qui comporte un moteur synchrone à excitation permanente. Un stator de ce moteur comprend un corps de bobine monté sur le moyeu de rotor. Un rotor du moteur synchrone est disposé à une distance axiale du stator pour la création d'un entrefer s'étendant dans le sens axial. Par ailleurs, le rotor comporte un système d'aimant permanent sur une plaque support reliée à un arbre de pale de rotor.

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