Abstract: The invention provides a wind turbine comprising a nacelle and a rotor being rotatable about an axis and relative to the nacelle. The rotor comprises a plurality of blades mounted on a rotor-centre-structure and is adapted to be parked in a plurality of parking positions. Each of the parking positions provides at least two simultaneously appearing passages suitable for passage of personnel from the nacelle into an inner space in the rotor-centre-structure. Each passage is formed by a nacelle-opening into the nacelle in communication with a matching RCS-opening into the rotor-centre-structure.

Abstract: A heli-hoist pad that is incorporated into a wind turbine nacelle in a manner that is optimized for helicopter approach and positioning of the heli-hoist pad, such as by being located within a recess in an upper surface of the wind turbine nacelle. Heat exchangers may also be positioned within the free flow of wind outside of a nacelle in manners that provide for serviceability while also allowing for optimal positioning of a heli-hoist pad.

Abstract: A drivetrain for a horizontal axis wind turbine includes a main shaft, and a main bearing housing having a main body at least partly enclosing the main shaft and extending from a first end to a second end, a distance from the second end to the rotor attachment flange being larger than a distance from the first end to the rotor attachment flange. The main bearing housing: carries the main shaft via a first bearing and a second bearing, a distance between the second bearing and the rotor attachment flange being larger than a distance between the first bearing and the rotor attachment flange; has a first seat for the first bearing, and a second seat for the second bearing; and includes a seat flange extending from the main body at least partly radially inwards, the second seat being located on a distal end of the seat flange.

Abstract: A power transmission system for increasing the rotational speed from a rotor of a wind turbine comprises a main shaft configured to be driven by the rotor, a support structure, and a gearbox. The support structure includes at least one bearing supporting the main shaft for rotation about the main axis, with no other degrees of freedom between the main shaft and support structure. The gearbox includes a gearbox housing rigidly coupled to the support structure and a gearbox input member coupled to the main shaft. The gearbox housing supports the gearbox input member for rotation about the main axis without any other degrees of freedom, and the gearbox input member is coupled to the main shaft with translational degrees of freedom in all directions and rotational degrees of freedom about axes perpendicular to the main axis.

Abstract: The invention provides a hub for a wind turbine, the hub comprising a continuous shell being assembled from at least two shell parts. To improve stiffness of the hub, a plate element is attached within blade flanges of the assembled hub. Due to the combination between shell parts and a plate element, manufacturing and transportation is facilitated while strength and rigidity is ensured.

Abstract: The application describes an apparatus for and a method of mounting wind turbine blades on a wind turbine tower. A number of guide rods are provided in the vicinity of the blade root and hub for connection to corresponding socket sections. The guide rods and socket sections are provided on respective ones of a wind turbine blade and a wind turbine hub to facilitate connection of one to the other. The guide rods and the sockets may be provided on the same or on different ones of the blade or hub. The guide rods and sockets allow the blade to be positioned at the hub in the correct rotational orientation to facilitate connection of the necessary fasteners.

Abstract: A hub for a wind turbine and a method for fabricating the hub are disclosed. The hub comprises a continuous shell forming a hollow body with a main shaft flange adapted to connect the hub to a main shaft, and one or more blade flanges, each blade flange being adapted to connect the hub to a wind turbine blade. The hub further comprises at least two hub parts, each hub part being casted separately from a castable material, and each hub part being subsequently connected to at least one other hub part via one or more connecting portions, so that at least one blade flange and/or the main shaft flange comprises a section forming part of or being attached to one of the hub parts and a section forming part of or being attached to another hub part, thereby ensuring that the casted parts have a size and a weight which are manageable during the manufacture, in particular during the casting. The hub may comprise one or more reinforcement elements arranged at or near the blade flange(s), e.g.

Abstract: A heli-hoist pad that is incorporated into a wind turbine nacelle in a manner that is optimized for helicopter approach and positioning of the heli-hoist pad, such as by being located within a recess in an upper surface of the wind turbine nacelle. Heat exchangers may also be positioned within the free flow of wind outside of a nacelle in manners that provide for serviceability while also allowing for optimal positioning of a heli-hoist pad.

Abstract: A heli-hoist pad (18) that is incorporated into a wind turbine nacelle (12) in a manner that is optimized for helicopter approach and positioning of the heli-hoist pad (18), such as by being located within a recess (20) in an upper surface (28) of the wind turbine nacelle (12). Heat exchangers (50) may also be positioned within the free flow of wind outside of a nacelle (12) in manners that provide for serviceability while also allowing for optimal positioning of a heli-hoist pad (18).

Abstract: The invention relates to a transportation system for transporting at least one drive train component (7a, 7b, 7c) of a wind turbine (1) comprising a tower (2) and a nacelle (3) arranged on the top of said tower, said transportation system comprising a displacement system comprising one or more transportation rails (8, 8a, 8b) being arranged to support said at least one drive train component during displacement thereof, the displacement system facilitating displacement of the drive train component substantially parallel to the rotor axis between an installation location for the drive train component and a second location (10) by means of a first drive arrangement of said displacement system, and a second drive arrangement (11) mounted on said nacelle and comprising at least one winch (12), said second drive arrangement being separate to said displacement system and facilitating transportation of said drive train component between said second location and a lower level when connected to the drive train componen

Abstract: The invention provides a wind turbine comprising a nacelle and a rotor being rotatable about an axis and relative to the nacelle. The rotor comprises a plurality of blades mounted on a rotor-centre-structure and is adapted to be parked in a plurality of parking positions. Each of the parking positions provides at least two simultaneously appearing passages suitable for passage of personnel from the nacelle into an inner space in the rotor-centre-structure. Each passage is formed by a nacelle-opening into the nacelle in communication with a matching RCS-opening into the rotor-centre-structure.

Abstract: The invention provides a drive train for a horizontal axis wind turbine, comprising—a main shaft provided with a rotor attachment flange adapted to be connected to a rotor of the wind turbine, and—a main bearing housing having a main body at least partly enclosing the main shaft and extending from a first end to a second end, a distance from the second end to the rotor attachment flange being larger than a distance from the first end to the rotor attachment flange, the main body presenting at the second end a component attachment flange for a connection of the housing to a further drive train component,—the main bearing housing carrying the main shaft via a first bearing and a second bearing, a distance between the second bearing and the rotor attachment flange being larger than a distance between the first bearing and the rotor attachment flange,—the main bearing housing having a first seat for the first bearing, and a second seat for the second bearing,—the main bearing housing comprising a seat flange exte

Abstract: The invention provides a hub for a wind turbine, the hub comprising a continuous shell being assembled from at least two shell parts. To improve stiffness of the hub, a plate element is attached within blade flanges of the assembled hub. Due to the combination between shell parts and a plate element, manufacturing and transportation is facilitated while strength and rigidity is ensured.

Abstract: A heli-hoist pad (18) that is incorporated into a wind turbine nacelle (12) in a manner that is optimized for helicopter approach and positioning of the heli-hoist pad (18), such as by being located within a recess (20) in an upper surface (28) of the wind turbine nacelle (12). Heat exchangers (50) may also be positioned within the free flow of wind outside of a nacelle (12) in manners that provide for serviceability while also allowing for optimal positioning of a heli-hoist pad (18).

Abstract: The invention relates to a transportation system for transporting at least one drive train component (7a, 7b, 7c) of a wind turbine (1) comprising a tower (2) and a nacelle (3) arranged on the top of said tower, said transportation system comprising a displacement system comprising one or more transportation rails (8, 8a, 8b) being arranged to support said at least one drive train component during displacement thereof, the displacement system facilitating displacement of the drive train component substantially parallel to the rotor axis between an installation location for the drive train component and a second location (10) by means of a first drive arrangement of said displacement system, and a second drive arrangement (11) mounted on said nacelle and comprising at least one winch (12), said second drive arrangement being separate to said displacement system and facilitating transportation of said drive train component between said second location and a lower level when connected to the drive train componen

Abstract: A power transmission system for increasing the rotational speed from a rotor of a wind turbine comprises a main shaft configured to be driven by the rotor, a support structure, and a gearbox. The support structure includes at least one bearing supporting the main shaft for rotation about the main axis, with no other degrees of freedom between the main shaft and support structure. The gearbox includes a gearbox housing rigidly coupled to the support structure and a gearbox input member coupled to the main shaft. The gearbox housing supports the gearbox input member for rotation about the main axis without any other degrees of freedom, and the gearbox input member is coupled to the main shaft with translational degrees of freedom in all directions and rotational degrees of freedom about axes perpendicular to the main axis.

Abstract: The application describes an apparatus for and a method of mounting wind turbine blades on a wind turbine tower. A number of guide rods 94 are provided in the vicinity of the blade root and hub for connection to corresponding socket sections 96. The guide rods 94 and socket sections 96 are provided on respective ones of a wind turbine blade and a wind turbine hub to facilitate connection of one to the other. The guide rods 94 and the sockets 96 may be provide on the same or on different ones of the blade or hub. The guide rods and sockets allow the blade to be positioned at the hub in the correct rotational orientation to facilitate connection of the necessary fasteners.

Abstract: A hub (1) for a wind turbine and a method for fabricating the hub (1) are disclosed. The hub (1) comprises a continuous shell forming a hollow body with a main shaft flange (4) adapted to connect the hub (1) to a main shaft,and one or more blade flanges (5), each blade flange (5) being adapted to connect the hub (1) to a wind turbine blade. The hub (1) further comprises at least two hub parts (2, 3, 7), each hub part (2, 3, 7) being casted separately from a castable material, and each hub part (2, 3, 7) being subsequently connected to at least one other hub part (2, 3, 7) via one or more connecting portions (6), so that at least one blade flange (5) and/or the main shaft flange (4) comprises a section forming part of or being attached to one of the hub parts (2, 3, 7) and a section forming part of or being attached to another hub part (2, 3, 7), thereby ensuring that the casted parts have a size and a weight which are manageable during the manufacture, in particular during the casting.