Abstract: A wind energy plant tower with a tower portion made of a concrete material and a steel-made tubular tower segment, which has on its foot a plurality of connection bores for the connection to the tower portion made of the concrete material, wherein the tower portion made of the concrete material has a head portion with a plurality of openings and a plurality of anchor bolts are provided, which can be fastened after the completion of the tower portion made of the concrete material each at a time in or on one of the connection bores on the foot of the steel-made tower segment and one of the openings in the head portion.

Abstract: A wind energy plant with a nacelle, the azimuth orientation of which is motor-driven adjustable via an adjustment device, the adjustment device having at least one asynchronous motor with gearbox and at least one holding brake, wherein a control unit for the asynchronous motor is provided, which limits the moment occurring on the asynchronous motor to a predetermined maximum value.

Abstract: A method for the earthwork of a foundation sunk for a wind energy facility, which has the following steps: an anchor cage is provided, consisting of an anchor plate and several anchoring bolts which are connected with the anchor plate, the free ends of the anchoring bolts are guided through bores in at least one load distribution plate the load distribution plate lays on at least three bolt nuts, which are screwed on the anchoring bolts, a reinforcement for the foundation sunk is mounted and the anchor cage is poured in with the reinforcement, the anchoring bolts protruding with the bolt nuts in this, upon subsequent tightening of the anchoring bolts between anchor plate and load distribution plate, the bolt nuts are stripped over the thread of the anchoring bolt and loose their supporting capability.

Abstract: A method for the operation of a wind energy plant, with a synchronous generator, a superimposition gearbox, which is connected between rotor shaft and generator shaft, and a drive unit, wherein before connecting the synchronous generator to the electric grid, the drive unit drives the synchronous generator until the same has reached its rated rotational speed.

Abstract: A method for the operation of a wind energy plant, with a synchronous generator and a superimposition gearbox, which is connected between rotor and generator, and the gear ratio of which is adjusted by a control unit, characterised in that a mode of operation is provided in which the generator is connected to the electric grid, and the generator shaft is uncoupled from the rotor shaft via the superimposition gearbox.

Abstract: A wind energy plant with a rotor, which is coupled to a gear via a rotor shaft, the rotor shaft being double bearing mounted via one rotor side bearing and one gear side bearing, wherein a connection between rotor shaft and gear is provided at the gear side of the gear side bearing, and the gear side bearing props up on a machine carrier via at least one supporting equipment and the gear is detachably connected with the supporting equipment.

Abstract: A method for operating a device to vary a blade setting angle on a rotor blade of a wind power plant, comprising two variable drives each per rotor blade, a bearing element acting between the rotor blade and rotor hub which has a freely rotatable bearing ring, wherein the method has the following process steps: setting the bearing ring into a permanent rotation by a first drive, and adjusting the setting angle of the rotor blade by a second drive.

Abstract: A method for the earthwork of a foundation sunk for a wind energy facility, which has the following steps: an anchor cage is provided, consisting of an anchor plate and several anchoring bolts which are connected with the anchor plate, the free ends of the anchoring bolts are guided through bores in at least one load distribution plate the load distribution plate lays on at least three bolt nuts, which are screwed on the anchoring bolts, a reinforcement for the foundation sunk is mounted and the anchor cage is poured in with the reinforcement, the anchoring bolts protruding with the bolt nuts in this, upon subsequent tightening of the anchoring bolts between anchor plate and load distribution plate, the bolt nuts are stripped over the thread of the anchoring bolt and loose their supporting capability.