A blade for a wind turbine has a hollow or exoskeleton blade body. The blade body has a leading edge and a trailing edge along a span thereof. The blade body includes a first blade portion and a second blade portion wherein the first blade portion and the second blade portion are integrated with one another along at least 90% of the leading edge, and are in uncoupled contact at the trailing edge. The uncoupled contact permits the first blade portion and second blade portion to experience relative movement at the trailing edge when the blade body twists.

A rotor hub of a wind turbine comprising a hub housing, which has a plurality of connecting flanges, which are each adapted for connection of a rotor blade, wherein each of the rotor blades is coupled to a pitch drive for rotating the rotor blade, wherein the pitch drive is connected to an arrangement of electrical control devices, which are adapted to control the pitch drive. The arrangement of the control devices is provided in a module as a structural unit, the module being connected as a whole to the hub housing.

Hub assemblies (1) for a rotor (115) of a wind turbine (160) are disclosed. The hub assembly comprises a hub (11) comprising openings (12) to connect rotor blades (120), a pitch bearing (3), a pitch carrier (2) positioned between the hub (11) and the pitch bearing (3) and configured to support a pitch system (4) for adjusting a blade pitch, wherein the pitch carrier (2) comprises a strip plate (21) arranged between two opposite regions of the perimeter of the opening (12), and a mounting structure for assembling the strip plate (21) with the hub (11). Also disclosed are methods (200) for manufacturing a hub assembly (1) of a wind turbine (160).

A support system for a spinner of a rotor hub for a wind turbine, in particular to the attachment of a spinner to the rotor hub. It is an object of the disclosure to provide a spinner for a wind turbine with a suitable support system. The support system should be inherently resistant to shear and should thereby reduce the stress on the spinner. A rotor hub of a wind turbine includes a spinner, wherein the rotor hub is connected mechanically to the spinner. The spinner includes at least three spinner components. A support system is provided via which two spinner components disposed in spaced relationship to each other are supported by the rotor hub in each case. A respective third spinner component is arranged between the two spinner components and is connected to the components.

A wind turbine includes a main shaft (34), a rotor hub (22), a plurality of blades coupled to the rotor hub (22), and a rotor locking disc (32), (32). The main shaft (34) includes a front end portion (34a), and the front end portion (34a) includes a first connecting structure (36). The rotor hub (22) includes a second connecting structure (40). The first connecting structure (36) of the main shaft (34) is fixed to the second connecting structure (40) of the rotor hub (22). The rotor locking disc (32), (32) is integrally formed on the front end portion (34a) of the main shaft (34), and includes a peripheral region. A plurality of rotor locking elements (50), (50) are located in the peripheral region for receiving one or more rotor locking pins (30).

A method for assembling a rotor bearing arrangement of a wind turbine, includes the method steps: providing a rotor shaft; providing a bearing block; providing individual slide bearing pads; inserting the slide bearing pads in the bearing block; and joining the rotor shaft and the bearing block fitted with the slide bearing pads.

Wind turbine having a hollow, walkable generator shaft of a generator assembly and a hollow hub attached to the generator shaft and having at least two blades attached to it, wherein the hub is enterable from the generator shaft and the wind turbine is stoppable in at least two predetermined maintenance positions of the blades, wherein the wind turbine further comprises a safety arrangement, in which a rotatably supported safety element having a door is mounted covering the opening leading from the generator shaft into the hub, wherein a locking arrangement for fixing the safety element in an entering position, in which the door is vertically oriented, is provided.

This compressor wheel (3) is provided with a disc (22) which is formed in a disc shape and provided to be rotatable around a central axis (C); and a plurality of blades (23) provided on a disc surface (22f) facing a first side in the central axis (C) direction with an interval in a circumferential direction around the central axis (C). A rear surface (22r) of the disc (22) facing a second side in the central axis (C) direction has a convex curved surface (25) which is convex toward the second side in the central axis (C) direction at least part of a center portion of the disc (22).

A wind turbine includes a hub rotatable about an axis and a blade coupled to the hub. The blade includes an inner blade portion having a first end and a second end. The inner blade portion is coupled to the hub at the first end and extends radially outward from the hub to the second end. The blade further includes an outer blade portion having a first end and a second end. The first end of the outer blade portion is pivotably coupled to the second end of the inner blade portion.

A control method for a hydraulic control turning system of a generator rotor includes: establishing a length relationship table between multiple hydraulic cylinders of the hydraulic control turning system; selecting a reference hydraulic cylinder; acquiring current lengths of the multiple hydraulic cylinders when the multiple hydraulic cylinders are located at error correction positions; and adjusting lengths of the other hydraulic cylinders corresponding to a next driving stroke to conform with the length relationship table. With such an arrangement, the accumulated dimension error between the hydraulic cylinders may be dynamically corrected during the turning operation, thereby ensuring that the turning pins are accurately aligned with the pin holes in the generator, and the corresponding turning operation is performed after the generator set is locked. Based on this, a control device for a hydraulic control turning system of a generator rotor is further provided.