Method of mounting a segmented generator of a wind turbine, generator segment, segmented generator and wind turbine

A method for mounting a segmented generator of a wind turbine, wherein the segmented generator for operation of the wind turbine is formed from two or more generator segments, wherein the generator segments each have a stator segment and a rotor segment, wherein the stator segment for fastening the stator segment to a machine carrier flange of a machine carrier has a stator flange and the rotor segment for fastening to a rotor carrier of a main bearing has a rotor flange, wherein the two or more generator segments, in a circumferential direction (U), each extend between two connection interfaces (V1, V2) which are formed for connection with corresponding connection interfaces (V1, V2) of adjacent generator segments arranged in the circumferential direction (U), the method comprising:

• providing a tower the wind turbine in an installation state,
• providing the machine carrier;
• and
• lifting and positioning of the machine carrier at an upper end of the tower, such that the machine carrier can be rotatably coupled to the tower via a tower bearing,
• pre-fixing the machine carrier to the tower for mounting purposes, such that the machine carrier is rotatably mounted with respect to the tower via the tower bearing,
• providing two or more generator segments in a transport position, wherein the stator segment and the rotor segment of the respective generator segment are connected to one another,
• lifting and positioning one of the two or more provided generator segments from the transport position to a mounting position in which the stator flange is arranged on the machine carrier flange,
• pre-fixing the generator segment for mounting purposes via the stator flange on the machine carrier flange in the mounting position,
• lifting and positioning at least one additional one of the two or more generator segments from the transport position into a further mounting position on the machine carrier flange of the machine carrier such that the pre-fixed generator segment is connectable to the generator segment positioned in the further mounting position via the connection interfaces of the respective generator segments,
• pre-fixing the further generator segment for mounting purposes in the further mounting position via at least one of:
• the stator flange to the machine carrier flange or
• at the pre-fixed generator segment via the connection interfaces of the respective generator segments, whereby
• the lifting, positioning and pre-fixing with further of the two or more generator segments are repeated until the lifted, positioned and fixed generator segments form the segmented generator,
• providing the main bearing and a hub fastened to the main bearing in the transport position, wherein three rotor blade bearings are preferably provided on the hub, wherein the main bearing includes the rotor carrier and an axle journal, wherein the rotor carrier for the operation of the segmented generator is rotatably mounted relative to the axle journal,
• lifting and positioning of the main bearing such that the stator flange of the stator segment is arranged between the machine carrier flange and the axle journal, and
• fastening the axle flange to the machine carrier flange for the operation of the wind turbine, wherein the stator flange of the stator segment is arranged between the machine carrier flange and the axle journal, wherein the rotor carrier for mounting rotor blades on the hub is not yet or will not yet be connected to the respective rotor segments of the generator segments.