A platform for a tower of a wind turbine is provided, wherein the platform is adapted for a hanging arrangement inside the tower and includes at least one support for supporting the platform in a horizontal direction against a tower wall, wherein the support includes a foot section for contacting the tower wall, an abutment section attached to the platform, and a pretensioner, wherein the pretensioner preloads the foot section against the abutment section with a pretension force directed towards the tower wall, wherein the foot section is moveable at least sectionally towards the platform when a force directed towards the platform and acting on the foot section exceeds the pretension force.

The repair system for performing at least one repair task in at least one wind turbine, in particular the nacelle, includes:

a controllable robotic repair device installed in the wind turbine, in particular the nacelle,

an operating device for remotely operating the robotic repair device, which comprises a control device and virtual reality equipment providing a virtual reality environment of the interior of the wind turbine, in particular the nacelle, for at least one human service user provided remote to the wind turbine,

wherein the control device of the operating device is adapted to remotely control the robotic repair device according to user input commands provided via the virtual reality equipment.

The repair system for performing at least one repair task in at least one wind turbine, in particular the nacelle, includes:

a controllable robotic repair device installed in the wind turbine, in particular the nacelle,

an operating device for remotely operating the robotic repair device, which comprises a control device and virtual reality equipment providing a virtual reality environment of the interior of the wind turbine, in particular the nacelle, for at least one human service user provided remote to the wind turbine,

wherein the control device of the operating device is adapted to remotely control the robotic repair device according to user input commands provided via the virtual reality equipment.

An inspection device control device for an inspection device of a wind turbine having a device interface arranged for communication with a wind turbine control of the wind turbine, and a device interface arranged for communication with the inspection device. Automated resource planning is possible if a processor produces control information for the inspection device depending on turbine parameters of the wind turbine received via the device interface and outputs the control information via the device interface. Further improved resource planning and control is made possible if a processor generates control information for the wind turbine and outputs the control information via the turbine interface, depending on the device parameters of the inspection device received via the device interface.

The present invention relates to an access arrangement (90) of a wind turbine blade for accessing a hollow space within the blade. The access arrangement (90) comprises an access opening (180) provided in the blade shell member, a cover panel (92) for covering the access opening (180), a sealing member (96) arranged between the cover panel (92) and the blade shell member, and one or more fasteners (98) for releasably fastening the cover panel (92) to the blade shell member. The present invention also relates to a wind turbine blade comprising the access arrangement (90).

The present invention relates to an access arrangement (90) of a wind turbine blade for accessing a hollow space within the blade. The access arrangement (90) comprises an access opening (180) provided in the blade shell member, a cover panel (92) for covering the access opening (180), a sealing member (96) arranged between the cover panel (92) and the blade shell member, and one or more fasteners (98) for releasably fastening the cover panel (92) to the blade shell member. The present invention also relates to a wind turbine blade comprising the access arrangement (90).

A method for performing uptower maintenance of a wind turbine in order to replace the main bearing on the turbine shaft is disclosed. Embodiments of this method to perform maintenance may include installing a rotor lock to resist rotation of the main shaft during maintenance, providing a lifting device in order to elevate the main shaft, removing the main bearing from its main bearing housing, and installing a replacement split main bearing. A crane may also be installed uptower to assist in the maintenance.

A method for performing uptower maintenance of a wind turbine in order to replace the main bearing on the turbine shaft is disclosed. Embodiments of this method to perform maintenance may include installing a rotor lock to resist rotation of the main shaft during maintenance, providing a lifting device in order to elevate the main shaft, removing the main bearing from its main bearing housing, and installing a replacement split main bearing. A crane may also be installed uptower to assist in the maintenance.

A method for performing maintenance on an outer surface of at least one wind turbine part, such as a tower (2), a nacelle (3) or a wind turbine blade (5), of an offshore wind turbine (1) is disclosed. An access system (10) is transported to a site of the offshore wind turbine (1), and the access system (10) is transferred to a transition platform (6) at a lower part of the offshore wind turbine (1), while operating the offshore wind turbine (1) in accordance with a normal operating mode. Normal operation of the offshore wind turbine (1) is then stopped, and maintenance is performed on an outer surface of at least one wind turbine part (2, 3, 5) of the offshore wind turbine (1), using the access system (10). When the maintenance has been completed, normal operation of the offshore wind turbine (1) is restarted in accordance with a normal operating mode. Normal operation of the offshore wind turbine (1) is only stopped while the actual maintenance takes place. Thereby the loss in power production is minimised.

A method for performing maintenance on an outer surface of at least one wind turbine part, such as a tower (2), a nacelle (3) or a wind turbine blade (5), of an offshore wind turbine (1) is disclosed. An access system (10) is transported to a site of the offshore wind turbine (1), and the access system (10) is transferred to a transition platform (6) at a lower part of the offshore wind turbine (1), while operating the offshore wind turbine (1) in accordance with a normal operating mode. Normal operation of the offshore wind turbine (1) is then stopped, and maintenance is performed on an outer surface of at least one wind turbine part (2, 3, 5) of the offshore wind turbine (1), using the access system (10). When the maintenance has been completed, normal operation of the offshore wind turbine (1) is restarted in accordance with a normal operating mode. Normal operation of the offshore wind turbine (1) is only stopped while the actual maintenance takes place. Thereby the loss in power production is minimised.