Abstract: The present invention provides an apparatus for the controlled rotation of a nacelle of a wind turbine, which includes a control device and n of yaw brakes. In standstill operation, the n yaw brakes are actuated to impart a standstill holding moment M1 for holding the nacelle, and the n yaw brakes impart a substantially equal first holding moment. In tracking operation, the n yaw brakes are actuated to impart a tracking holding moment, M2, which is lower than the standstill holding moment M1 (M1>M2). The control device, in tracking operation, actuates a number m of the n yaw brakes to generate substantially the same constant holding moment M3, where M1/n>M3>M2/n, and where the other (n?m) yaw brakes are actuated to generate substantially the same constant holding moment M4, where m*M3+(n?m)*M4˜=M2, and M1/n>M2/n>M4.

Abstract: The invention relates to a wind power plant (W) with a rotor, which is in operative connection with a gearbox (13) via a rotor shaft (12), wherein in particular the gearbox (13) is in operative connection with a generator via a main drive (19). Moreover, the invention relates to a method for the operation of a wind power plant (W) with a rotor and use of a driving device. The wind power plant (W), with a rotor, is further established in that the gearbox (13) has an auxiliary drive (30) and in that a rotor positioning rotating device (24) is arranged on the auxiliary drive (30) so that using the rotor positioning rotating device (24) and the auxiliary drive (30) of the gearbox (13), the rotor of the wind power plant (W) is positioned, and wherein the auxiliary drive (30) cannot be switched within the gearbox (13).

Abstract: The invention concerns a method for operating a wind power plant (WEA), preferably before or during the performance of maintenance work on the wind power plant (WEA), wherein —at least one physical condition of the surroundings outside the wind power plant (WEA) induced by wind movement outside the wind power plant (WEA) is detected as an external physical condition, and/or at least one physical condition of a component of the wind power plant (WEA) influenced by wind movement outside the wind power plant (WEA) is detected as an internal physical condition; —the at least one external physical condition and/or at least one internal physical condition are evaluated; —the at least one external physical condition is compared with a predetermined reference value for the external physical condition, and/or the at least one internal physical condition is compared with a predetermined reference value for the internal physical condition; —depending on the comparison at least one warning message is generated, in partic

Abstract: A connection of components (11, 12, 13) of a wind turbine (WEA), especially of components (11, 12, 13) of a wind turbine (WEA) with a diameter greater than 0.5 m, preferably greater than 1.0 m, more preferably greater than 1.5 m, in which two components (11, 12, 13) to be connected to each other each have contact areas facing toward each other, and in the connected state the components (11, 12, 13) are or become secured to each other. The connection is constituted by multiple intermediate connecting bodies (20) arranged between a first component (11; 12) of the wind turbine (WEA) and a second component (12; 13) of the wind turbine (WEA) and by designing the intermediate connecting bodies (20) with contact areas which are arranged opposite to the contact areas of the first and second component (11, 12, 13), at least one contact area of the intermediate connecting bodies (20) being provided with a coating.

Abstract: The invention relates to a wind power plant (W) with a rotor, which is in operative connection with a gearbox (13) via a rotor shaft (12), wherein in particular the gearbox (13) is in operative connection with a generator via a main drive (19). Moreover, the invention relates to a method for the operation of a wind power plant (W) with a rotor and use of a driving device. The wind power plant (W), with a rotor, is further established in that the gearbox (13) has an auxiliary drive (30) and in that a rotor positioning rotating device (24) is arranged on the auxiliary drive (30) so that using the rotor positioning rotating device (24) and the auxiliary drive (30) of the gearbox (13), the rotor of the wind power plant (W) is positioned, and wherein the auxiliary drive (30) cannot be switched within the gearbox (13).

Abstract: A method for handling a wind powerplant's rotor hub (11) or to handle a wind powerplant's rotor (10) using a hoist, in particular for erecting a wind powerplant or for assembling or disassembling a rotor (11) to and from such a powerplant, in particular a hub (11) or a rotor (10) being configured by means of one assembly side to the wind powerplant's tower, the hub (11) or rotor (10) being raised or held by the hoist. In the raised state, the hub (11) is tilted by a tilting mechanism (15) acting on it out of the initial, raised position by a predetermined angle of tilting, or the rotor (10) is tilted by a tilting mechanism (15) acting on the rotor blade roots of the rotor (10) through a predetermined angle of tilting. A mechanism (15) to handle a wind powerplant's rotor hub (11) of a wind powerplant's rotor (10), in particular for assembling or dismantling a rotor to or from its wind powerplant.

Abstract: The invention relates to a device for mounting and/or dismantling a component (10), in particular a rotor blade of a wind turbine (20) comprising a tower head (21). Said device comprises at least one guide element (30) that stretches between the tower head (21) and the ground (40) and has at least one supporting device (60) that is essentially fixed in the air, supporting at least a partial load of the weight of the component (10) during the transport of the latter (10) between the ground (40) and the wind turbine (20). At least one guy (70) leads from the supporting device (60) to the component (10), whereby the length of said guy between the supporting device (60) and the component (10) can be modified.