Abstract: Provided is a wind turbine including an active yaw system realized to maintain an upwind orientation of the wind turbine aerodynamic rotor during safe operating conditions, which active yaw system includes a number of yaw drive units, and wherein a yaw drive unit includes a negative brake; a principal power supply configured to supply power to the active yaw system during normal operation of the wind turbine; and a dedicated negative brake reserve power supply configured to supply power to the negative brakes in the event of a grid disconnect. A method of operating such a wind turbine is also provided.

Abstract: Provided is a wind turbine including a tower and a nacelle rotatable relative to the tower by means of a yaw bearing arrangement having a yaw ring fixed relative to the tower, several upper sliding pads arranged between the upper side of the yaw ring and a sliding structure of the nacelle and several lower sliding pads arranged between the lower side of the yaw ring and the sliding structure, wherein the sliding pads are fixed to the yaw ring and that at least one radial opening is provided in the sliding structure allowing access to the upper or lower sliding pads.

Abstract: A yaw bearing arrangement for a wind turbine, including a yaw bearing with a yaw ring and radial adjustment acting on the inner radial lateral surface of the yaw ring, the radial adjustment including at least a housing, at least one sliding pad and one or more threaded adjustment bolts arranged in threaded housing bores and connected with the sliding pad for a radial adjustment of the sliding pad towards the lateral surface and axial bores for accommodating fixation bolts, wherein the housing is a ring or a ring segment with a plurality of radial, at least partially threaded bores, each radial bore accommodating a radial sliding unit including a radial sliding pad and a threaded radial adjustment bolt for radial movement of the sliding pad.

Abstract: Provided is a wind turbine including a tower and a nacelle rotatable relative to the tower by means of a yaw bearing arrangement having a yaw ring fixed relative to the tower, several upper sliding pads arranged between the upper side of the yaw ring and a sliding structure of the nacelle and several lower sliding pads arranged between the lower side of the yaw ring and the sliding structure, wherein the sliding pads are fixed to the yaw ring and that at least one radial opening is provided in the sliding structure allowing access to the upper or lower sliding pads.

Abstract: Yaw bearing arrangement for a wind turbine, comprising a yaw bearing with a yaw ring and radial adjustment acting on the inner radial lateral surface of the yaw ring, the radial adjustment comprising at least a housing, at least one sliding pad and one or more threaded adjustment bolts arranged in threaded housing bores and connected with the sliding pad for a radial adjustment of the sliding pad towards the lateral surface and axial bores for accommodating fixation bolts, wherein the housing is a ring or a ring segment with a plurality of radial, at least partially threaded bores, each radial bore accommodating a radial sliding unit comprising radial sliding pad and a threaded radial adjustment bolt for radial moving the sliding pad.

Abstract: A method of vertically assembling a generator of a wind turbine is provided. The method includes A rotor part is arranged on a horizontal assembly which supports components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure; a stator part is arranged in the rotor part; and the stator part is joined to the rotor part. An assembly arrangement for a vertical assembly of a generator of a wind turbine is provided. The assembly arrangement includes a horizontal assembly support for supporting components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure.

Abstract: A component for a brake system for a wind turbine generator is provided. The generator including a stator assembly, a rotor assembly and a rotation axis, wherein the rotor assembly includes an outer portion which is located radially outward of the stator assembly is provided. The component has the shape of a ring and includes a means for connecting it to a flange of the stator assembly. The component further includes a number of radially outwardly protruding portions including a means for connecting the radially outwardly protruding portions to frictional members operatively configured for frictionally engaging at least a portion of a brake disc and/or for connecting the radially outwardly protruding portions to a rotor lock system.

Abstract: A field structure of an electrical machine includes a plurality of field slots. Each field slot extends from a first surface of the field structure into the body of the field structure. Each filed slot also has a T-shaped cross-sectional area dimensioned to accommodate a magnet pole assembly comprising a corresponding cross-sectional area.

Abstract: A method of vertically assembling a generator of a wind turbine is provided. The method includes A rotor part is arranged on a horizontal assembly which supports components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure; a stator part is arranged in the rotor part; and the stator part is joined to the rotor part. An assembly arrangement for a vertical assembly of a generator of a wind turbine is provided. The assembly arrangement includes a horizontal assembly support for supporting components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure.

Abstract: The present invention relates to an arrangement for directing a lightning current within a wind turbine. The arrangement includes a first component, a second component, a contact element and a guideway. One of the two components is arranged moveably in relation to the other. The contact element is arranged in a way that the first component is electrically connected to the second component in order to direct a lightning current within the wind turbine. The contact element is guided moveably by the guideway. According to the invention, the guideway is at least partly integrated in the first component.

Abstract: A field structure of an electrical machine includes a plurality of field slots. Each field slot extends from a first surface of the field structure into the body of the field structure. Each filed slot also has a T-shaped cross-sectional area dimensioned to accommodate a magnet pole assembly comprising a corresponding cross-sectional area.

Abstract: A heli-hoist platform that is an integral part of the nacelle is disclosed. A floor of the heli-hoist platform is formed by a roof of the nacelle. The floor of the heli-hoist platform may include a nonslip surface. The floor of the heli-hoist platform may include an entrance to the nacelle.

Abstract: The present invention relates to an arrangement for directing a lightning current within a wind turbine. The arrangement includes a first component, a second component, a contact element and a guideway. One of the two components is arranged moveably in relation to the other. The contact element is arranged in a way that the first component is electrically connected to the second component in order to direct a lightning current within the wind turbine. The contact element is guided moveably by the guideway. According to the invention, the guideway is at least partly integrated in the first component.

Abstract: A new and distinct cultivar of Dahlia plant named ‘DAELLEVE’ characterized by its ray floret color (when opening, upper side): base: Purple, RHS 67A; apex: Red-purple, RHS 62D; capitulum (composite flower head): 9.5 to 10.5 cm in diameter, with a large number of ray florets (about 120 to 160); mature leaves are about 6 to 11 cm in length, mostly compound, with 1-5 leaflets and immature leaves are about 3 to 6 cm in length, compound, with 1-5 leaflets; and vigorous plant vigor, growing upright to outward to form cylindrical-shaped plant.

Abstract: A new and distinct cultivar of Dahlia plant named ‘DATOLV’ characterized by its ray floret color (when opening, upper side): Red, RHS 44A.; capitulum (composite flower head): 9.5 to 11.0 cm in diameter, with a large number of ray florets (about 110 to 150); mature leaves are about 6 to 15 cm in length, mostly compound, with 1-5 leaflets and immature leaves are about 4 to 10 cm in length, compound, with 1-5 leaflets; and vigorous plant vigor, growing upright to outward to form cylindrical-shaped plant.

Abstract: A new and distinct cultivar of Dahlia plant named ‘DATRETTEN’ characterized by its ray floret color (when opening, upper side): base: red, RHS 44B and apex: white, RHS N155B; capitulum (composite flower head): 9.5 to 10.5 cm in diameter, with a large number of ray florets (about 100 to 140); mature leaves about 8 to 12 cm in length, mostly compound, with 1-5 leaflets, and immature leaves about 4 to 6 cm in length, compound, with 1-5 leaflets; and vigorous plant vigor, growing upright with slight spread to form cylindrical-shaped plant.

Abstract: A new and distinct cultivar of Dahlia plant named ‘DAFEMTEN’ characterized by its ray floret color (fully opened): upper side: yellow-orange, R.H.S. 15B and under side: greyed-orange, R.H.S. 168B; capitulum (composite flower head): 8 cm in diameter, with a large number of ray florets (about 100 to 150); mature leaves are about 4 to 7 cm in length, mostly compound, with 1-5 leaflets; and vigorous plant vigor, growing upright with slight spread to form cylindrical-shaped plant.

Abstract: The present invention relates to a method and container for the cultivation of ornamental plants, facilitating the application of the method of drought stress to reduce cell elongation of plants grown in a slowly absorbing material such as peat moss without the use of chemical retarding agents. The invention thus discloses a container for the cultivation of plants comprising a layered structure incorporating a rapidly liquid absorbing reservoir and a body of suitable cultivation substrate. According to an advantageous embodiment a layer is furthermore inserted between said reservoir and said cultivation substrate in order to obtain a controlled flow of liquid from said reservoir to said cultivation substrate.

Abstract: The present invention relates to a method and container for the cultivation of ornamental plants, facilitating the application of the method of drought stress to reduce cell elongation of plants grown in a slowly absorbing material such as peat moss without the use of chemical retarding agents. The invention thus discloses a container for the cultivation of plants comprising a layered structure incorporating a rapidly liquid absorbing reservoir and a body of suitable cultivation substrate. According to an advantageous embodiment a layer is furthermore inserted between said reservoir and said cultivation substrate in order to obtain a controlled flow of liquid from said reservoir to said cultivation substrate.

Abstract: The present invention relates to a production method and corresponding system for ornamental plants, by which it is possible to apply the method of drought stress advantageously to reduce cell elongation of plants grown in a slowly absorbing material such as peat moss without the use of chemical retarding agents and simultaneously to increase the growth of the plants (i.e. the increase of dry substance) through a controlled application of carbondioxide at the vicinity of the plants.