A nacelle cover (240) for a wind turbine including a composite material elongate housing (245) defining an interior space for containing machinery components of the wind turbine, the housing (245) having a front end (247) for mounting to a tower (252) of the wind turbine, and an opposite rear end (248). At least one machinery component (125) of the wind turbine is mounted on the housing (245) at a position laterally spaced from the tower (252) in a longitudinal direction along the housing (245). The housing (245) includes a structural tube (242) which functions as a vertically displaceable cantilever beam carrying the load of the at least one machinery component (125) mounted thereon. In an unloaded state prior to mounting the at least one machinery component (125) on the housing (245), the rear end (248) is higher than the front end (247), and in a loaded state after mounting the at least one machinery component (125) on the housing (245), the rear end (248) is lowered as compared to the unloaded state by flexural elastic deformation of the structural tube (242).

A nacelle cover (100) for a wind turbine includes an elongate housing (105) and the front end (107) of the housing (105) is mounted on a bed plate frame (420) which is affixed to the tower (122), the bed plate frame (420) supporting at least one part of a drive train (124) of the wind turbine. At least one machinery component (125) is mounted on the housing (105) at a position laterally spaced from the bed plate frame (420) in a longitudinal direction along the housing (105). The housing (105) includes a structural tube (128) which functions as a vertically displaceable cantilever beam carrying the load of the at least one machinery component (125) mounted thereon.

A nacelle cover (240) for a wind turbine including a composite material elongate housing (245) defining an interior space for containing machinery components of the wind turbine, the housing (245) having a front end (247) for mounting to a tower (252) of the wind turbine, and an opposite rear end (248). At least one machinery component (125) of the wind turbine is mounted on the housing (245) at a position laterally spaced from the tower (252) in a longitudinal direction along the housing (245). The housing (245) includes a structural tube (242) which functions as a vertically displaceable cantilever beam carrying the load of the at least one machinery component (125) mounted thereon. In an unloaded state prior to mounting the at least one machinery component (125) on the housing (245), the rear end (248) is higher than the front end (247), and in a loaded state after mounting the at least one machinery component (125) on the housing (245), the rear end (248) is lowered as compared to the unloaded state by flexural elastic deformation of the structural tube (242).

A nacelle-mounted multiple-appliance lift system has a first lifting appliance and a second lifting appliance mounted in a nacelle of a wind turbine. The first and second lifting appliances are each mounted on main bearing housing securements, gearbox pillow blocks, or both the main bearing housing securements and the gearbox pillow blocks. The first and second lifting appliances share one or both of the main bearing housing securements and the gearbox pillow blocks.

Wind turbine, comprising a bedframe (2) having a cylindrical frame connection flange (11) and shaft (3) having a cylindrical shaft connection flange (16), wherein the shaft connection flange (16) is fixated to the frame connection flange (11) by screw connections arranged in axially extending bores provided in the frame connection flange (11) and the shaft connection flange (15), wherein the frame connection flange (11) is provided with a first row (Ia) of first through bores arranged at an outer first frame radius and the shaft connection flange (16) is provided with a first row (Ib) of first threaded blind bores (21) arranged at an outer first shaft radius which corresponds to the first outer frame radius, the frame connection flange (11) is provided with a second row (IIa) of second threaded blind bores (26) arranged at an intermediate second frame radius and the shaft connection flange (16) is provided with a second row (IIb) of second through bores (27) arranged at an intermediate second shaft radius which corresponds to the intermediate second frame radius, the frame connection flange (11) is provided with a third row (IIIa) of third threaded blind bores (31) arranged at an inner third frame radius and the shaft connection flange (16) is provided with a third row (IIIb) of third through bores (32) arranged at an inner third shaft radius which corresponds to the inner third frame radius, wherein a through bore is flush with a threaded bore and a screw connection (22, 28, 33) extends through the through bore and is screwed into the threaded blind bore.

A wind turbine includes a bedframe having a frame connection flange and shaft having a shaft connection flange, which is fixated to the frame connection flange. The frame connection flange includes through bores at an outer first frame radius, threaded blind bores at an intermediate second frame radius, threaded blind bores at an inner third frame radius. The shaft connection flange includes threaded blind bores at an outer first shaft radius that corresponds with the first outer frame radius, second through bores at an intermediate second shaft radius that corresponds with the intermediate second frame radius, and third through bores at an inner third shaft radius that corresponds with the inner third frame radius, wherein a through bore is flush with a threaded bore and a screw connection extends through the through bore and is screwed into the threaded blind bore.

A wind turbine nacelle includes a rotor generator shaft, a rotor connected to the rotor generator shaft, an array of permanent magnets mounted on a circular outer surface of the rotor, a rotor hub directly connected to a forward end of the rotor generator shaft, a plurality of circumferentially spaced blades mounted on the rotor hub to face upwind, a stator ring surrounding the rotor, a plurality of encased coils mounted on an inner surface of the stator ring facing and radially spaced from the array of permanent magnets, a rear chassis attached to a rear surface of the stator ring and having a rear bearing housing, a rear bearing mounted in the rear bearing housing, a forward chassis attached to a front surface of the stator ring and having a front bearing housing, and a front bearing mounted in the front bearing housing.

A nacelle-mounted multiple-appliance lift system has a first lifting appliance and a second lifting appliance mounted in a nacelle of a wind turbine. The first and second lifting appliances are each mounted on main bearing housing securements, gearbox pillow blocks, or both the main bearing housing securements and the gearbox pillow blocks. The first and second lifting appliances share one or both of the main bearing housing securements and the gearbox pillow blocks.

The nacelle (27) of a horizontal axis wind turbine (WT) is mounted on a vertical support (VS) by means of a pivot (33). The vertical support is mounted off-center with respect to a floating, rotatable support (7). A weight (43) functionally attached to the nacelle maintains the axis of the turbine horizontal as the floating support pitches (rotates forward and back). The weight is attached to an elongate vertical element (41). Relative motion between the vertical element (41) and the pitching floating support (HS) generates an electric current.

The nacelle (27) of a horizontal axis wind turbine (WT) is mounted on a vertical support (VS) by means of a pivot (33). The vertical support is mounted off-center with respect to a floating, rotatable support (7). A weight (43) functionally attached to the nacelle maintains the axis of the turbine horizontal as the floating support pitches (rotates forward and back). The weight is attached to an elongate vertical element (41). Relative motion between the vertical element (41) and the pitching floating support (HS) generates an electric current.