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.

A stator for a generator of a wind turbine includes stator segments including a lamination stack, and a stator support structure with segments extending in an axial direction and being adjacently located in a circumferential direction to form a ring-like structure, wherein each support structure segment includes at least one longitudinal carrier element, which extends in an axial direction and includes a stator segment-sided lamination attachment section for fixing the carrier element to the respective stator segment using a lamination attachment assembly, wherein the lamination attachment assembly for each carrier element includes: a counter bearing element to be inserted into a cavity of the lamination stack and extending at least essentially over the complete axial length of the stator segment, a stiffening bar to be placed inside the carrier element on the lamination attachment section, extending at least essentially over the complete axial length of the support structure segment.

A support structure for supporting a lamination stack and a winding structure in order to form a stator segment for an electric machine, in particular a wind turbine generator including (a) a frame including two parallel end plates and two side plates, the side plates extending between corresponding end portions of the end plates, (b) a plurality of internal connecting members extending within the frame between the end plates, and (c) a plurality of external connecting members extending outside of the frame, each external connecting member forming an extension of a corresponding internal connecting member beyond one of the end plates, wherein (d) the internal and external connecting members are adapted to engage with corresponding fastening members for securing a lamination stack. A stator segment, a wind turbine generator, and a method of manufacturing a support structure are also described.

An armature is presented. The armature includes an armature winding having a plurality of coils, wherein each coil of the plurality of coils is spaced apart from adjacent coils and comprise includes a first side portion and a second side portion. The armature further includes a first electrically insulating winding enclosure. Furthermore, the armature includes a second electrically insulating winding enclosure disposed at a radial distance from the first electrically insulating winding enclosure, wherein the armature winding is disposed between the first electrically insulating winding enclosure and the second electrically insulating winding enclosure. Moreover, the armature includes an electrically insulating coil side separator disposed between the first side portion and the second side portion of the plurality of coils of the armature winding. A superconducting generator including the armature and a wind turbine having such superconducting generator are also presented.

The present invention relates to a wind power generator for street light comprising: a post member installed vertically; a central fixed shaft member installed horizontally on an upper portion of the post member; a first blade member rotatably installed around the central fixed shaft member and including a first blade rotated by wind on one side thereof; a second blade member rotatably installed around the first blade member and including a second blade rotated by wind on one side thereof; a cone member having an inclined shape at a specific angle so that wind smoothly moves toward the first blade member and the second blade member, and a power generation module rotated by the first blade member and the second blade member to generate power. According to the present invention, the first blade member and the second blade member can supply sufficient torque required for the rotation of the power generation module and can increase power generation time by driving the power generation module with the double blades. In addition, it is possible to minimize the installation space and reduce the size of the wind power generator by installing the first rotating shaft and the second rotating shaft in a double layer structure.

The present disclosure relates to tooth assemblies (100) comprising a tooth body (110), a winding (120) arranged around the tooth body (110) and a winding stopper (130). The winding stopper (130) comprises a first portion (131) shaped and dimensioned to be received in a groove (114) of the tooth body (110). Further, the winding stopper (130) comprises a second portion (132) extending from the first portion (131) and protruding from a first lateral wall (113) of the tooth body (110). Winding stoppers (130) and methods (800) for assembling a tooth assembly (100) are also provided.

A generator for a wind turbine comprising a generator stator having a mounting portion for fixing the generator stator to a machine carrier of the wind turbine, and a generator rotor mounted rotatably about a generator axis relative to the generator stator. The generator has a single-stage transmission which is adapted to non-rotatably cooperate at the drive side with a rotor blade hub and which is non-rotatably connected at the output side to the generator rotor.

A triboelectric nanogeneration module, and a combined wind turbine and a method thereof. The triboelectric nanogeneration module includes a rotating disc, and moving friction plates and fixed friction plates that are oppositely arranged outside the radial direction of the rotating disc. A nano-friction material layer is arranged on the surface of each of the moving friction plates and the fixed friction plates. Driving devices are arranged on the rotating disc in the circumferential direction at intervals. The driving devices are used for extruding the moving friction plates to move to the positions at which the moving friction plates are in contact with the fixed friction plates. The moving friction plates are connected to reset devices used for separating the moving friction plates from the fixed friction plates. The moving friction plates perform straight reciprocating movement under the action of the driving devices and the reset devices.

In a first aspect, a method for removing an electromagnetic module from an electrical machine is provided. The electrical machine comprises a plurality of electromagnetic modules having an electromagnetic material. The electromagnetic modules comprise base and a support extending from the base and supporting the electromagnetic material. The base comprises a bottom surface and a first side surface. The first side surface comprises an axially extending groove defining a cooling channel with an axially extending groove of a first side surface of an adjacent electromagnetic module. The method comprises inserting a rod in a cooling channel formed by the groove of the electromagnetic module to be removed and a groove of an adjacent electromagnetic module; releasing the electromagnetic module to be removed from a structure of the electrical machine; and sliding the electromagnetic module to be removed along the rod.

The present disclosure relates to a stator assembly for an electrical machine. The stator assembly comprises a plurality of stator frames (110, 120, 130) forming a stator rim (100). The stator frames (110, 120, 130) defining ring sectors and mounted to each other to form a stator rim (100). Further, the stator frames (110, 120, 130) at least partially form an air distribution channel extending from at least one of the stator frames (110, 120, 130) into another of the stator frames (110, 120, 130). Methods (400) for assembling a stator assembly are also disclosed.