The present disclosure relates to wind turbines comprising a tower, a nacelle mounted on the tower, a wind turbine rotor with a plurality of blades, and a wind turbine generator operatively coupled with the wind turbine rotor. The wind turbine further comprise one or more auxiliary wind energy converters arranged with the nacelle. The present disclosure further relates to methods for providing power to an auxiliary system of a wind turbine.

Provided is a modular work platform including multiple modules for assembly about a tuned mass damper in a wind turbine, whereby the multiple modules are a first base platform, a second base platform, a first base connecting railing, and a second base connecting railing, whereby in an assembled state of the modular work platform, the modular work platform includes a platform opening for the tuned mass damper, wherein the platform opening is formed between the first base platform, the second base platform, the first base connecting railing and the second base connecting railing. A system including the modular work platform and a fixture for the tuned mass damper in the wind turbine, whereby the modular work platform is connected to the fixture is also provided.

A nacelle housing of a nacelle of a wind turbine is provided. The nacelle housing includes a ventilation opening of a cooling system of the wind turbine, a cover closing the ventilation opening, the cover being configured to allow an airflow through the cover and the ventilation opening, and a service hatch for hoisting a load into or out of the nacelle housing. The service hatch is provided by the ventilation opening and the cover, wherein the cover is configured as a service door of the service hatch that is opened to allow the hoisting of a load through the ventilation opening into or out of the nacelle housing. Furthermore, a method of hoisting a load into or out of a nacelle housing of a wind turbine is provided.

A nacelle for a wind turbine, the nacelle comprising: a drivetrain with a drivetrain axis, at least two torque arms positioned around the drivetrain axis and attached to a member of the drivetrain, and a frame attached to a yaw bearing. The torque arms of the drive train are supported by the frame and at least one of the torque arms has an orientation deviating at least substantially from being horizontal.

A mainframe mounts the drivetrain of a wind turbine, and to an arrangement comprising such a mainframe, and to a wind turbine having a corresponding arrangement. For the purpose of mounting the drivetrain of a wind turbine, the mainframe is realized with two bearing points that are spaced apart from each other, a partial flange, having a fastening region shaped as a circular ring segment, being provided at at least one bearing point. The arrangement comprises, besides the mainframe, at least one ring element configured to radially encompass the drivetrain. At least one ring element is fastened to the fastening region, shaped as a circular ring segment, of a bearing point of the mainframe. In the case of the wind turbine, the drivetrain is mounted by means of the described arrangement.

An arrangement including a transmission, a feedthrough tube, and a fixing means is disclosed. A fixing means is disclosed whereby the feedthrough tube is fixed in the transmission. The fixing means includes an electrical non-conductor. Arrangements are disclosed in which the feedthrough tube is fixed axially and immovably in the fixing means.

The present disclosure relates to wind turbine nacelles (16), comprising a housing including a front side (270), and a rear side (250) separated from the front side along an axial direction (x), first and second sidewalls (260) extending from the front side to the rear side and a roof. The roof comprises one or more roof panels (210, 220, 230, 240), and at least one of the roof panels is a displaceable roof panel configured to be displaced relative along the axial direction (x) to another part of the roof to provide access to the nacelle (16) from above. The present disclosure further relates to methods for providing access to an inside of the nacelle.

The present disclosure relates to wind turbine nacelles (16), comprising a housing including a front side (270), and a rear side (250) separated from the front side along an axial direction (x), first and second sidewalls (260) extending from the front side to the rear side and a roof. The roof comprises one or more roof panels (210, 220, 230, 240), and at least one of the roof panels is a displaceable roof panel configured to be displaced relative along the axial direction (x) to another part of the roof to provide access to the nacelle (16) from above. The present disclosure further relates to methods for providing access to an inside of the nacelle.

The present disclosure is related to nacelle cover panels and nacelle cover assemblies. The nacelle cover panel is configured to be mounted in a nacelle of a wind turbine. Further, the nacelle cover panel comprises a composite panel including at least an outer roof surface and an inner surface, and a structural frame coupled to the composite panel. Methods of providing a nacelle assembly are also disclosed.

An annular seal member comprising a seal body comprising a locating portion locatable against a wall element of an offshore structure, an inner surface, an outer surface and a lip portion that defines an open mouth of the seal member for receiving an elongate element therethrough; wherein the seal body is locatable against the wall element such that when a static pressure acting on the outer surface of the seal body exceeds a static pressure acting on the inner surface of the seal body a net positive pressure is exerted on the outer surface which at least partly deforms inwardly to provide a portion of the seal body for sealing against an outer surface of the elongate element. An offshore structure.