Nordex Energy

The invention relates to a method for manufacturing a connecting flange (128) of a wind turbine rotor blade (110), comprising the following steps: a) placing a first fiber layer (202) into a mold (400), b) placing a first prefabricated flange segment (300) with an outer side (314) onto a first portion (206) of the first fiber layer (202), in particular such that a second portion (208) of the first fiber layer (202) remains uncovered by the first prefabricated flange segment (300), c) placing a second prefabricated flange segment (301) into the mold (400) adjacent to the first prefabricated flange segment (300), wherein an end face (324) of the second prefabricated flange segment (301) faces the end face (318) of the first prefabricated flange segment (300) such that a gap (302) is formed between the two prefabricated flange segments (300, 301) and the second portion (208) of the first fiber layer (202) extends through the gap (302).

A wind turbine rotor blade (110) comprises a spar cap (200) having a first-type stack (202) of prefabricated pultruded planks (210). The first-type stack has a length (L1) measured in a first direction (D1), a width (W1) defined as the distance between two opposite lateral sides (204) of the first-type stack and a height (H1) measured in a stacking direction of the pultruded planks. A further prefabricated pultruded plank is arranged transversely to the pultruded planks of the first-type stack on a lateral side of the first-type stack.

The invention relates to a facility (200) for manufacturing a wind turbine rotor blade (110), comprising:a plurality of stationary molds (202) for manufacturing parts of a wind turbine rotor blade (110),a gas exhaust system (203) comprising a plurality of gas exhaust terminals (204), each gas exhaust terminal (204) being arranged stationary with respect to the molds (202), anda vacuum pump (208) producing exhaust gas during operation, whereinthe vacuum pump (208) is movable relative to the molds (202) and the plurality of gas exhaust terminals (204) such that the vacuum pump (208) can be selectively connected to a gas exhaust terminal (204) of the plurality of the gas exhaust terminals (204) to discharge the exhaust gas of the vacuum pump (208) to the outside (210) of the facility (200).The invention also relates to a gas exhaust system (203).

The object of the invention is an adapter of a tower of a wind turbine wherein the tensioning elements are completely disposed in the space defined by the inner wall in the interior of the tower, thus avoiding the passage of the tensioning elements partially or completely by the at least one concrete segment of the at least one concrete section of the tower, and a wind turbine comprising a tower which in turn comprises the adapter and the method of erecting the tower comprising the adapter.

The object of the invention is an adapter of a tower of a wind turbine that can provide additional stiffness in those parts of the adapter where there is a stress concentration, and a wind turbine comprising a tower which in turn comprises the adapter, and a method of erecting the tower.

The invention relates to a method for manufacturing a wind turbine rotor blade (110), comprising the steps of:a) providing two prefabricated parts in a mold (400), the prefabricated parts being arranged next to each other and forming a gap (302) between each other,b) providing fiber material (304),c) pushing the fiber material (304) into the gap (302).

Method of manufacturing a half shell of a wind turbine rotor blade (110), the method comprising the following steps: a) providing a mold for the half shell, b) placing a fiber layer into the mold, c) placing a stack of prefabricated pultruded planks and a core element on top of the fiber layer, wherein the core element has an end face, said end face having at least two projections being integrally formed with the core element, and the core element is arranged with the end face on a lateral side of the stack in such a way that by means of the at least two projections a gap is formed between the core element and the stack, and d) supplying resin into the mold during a vacuum infusion process.

A present disclosure refers to a hub (1) for a rotor (110) of a wind turbine (100), comprising a hub body (2) with a first flange (3) configured for attaching the hub body to a rotor shaft of the wind turbine and with at least one second flange (5) configured for supporting a rotor blade, the at least one second flange defining a second flange area (6) of the hub body, further comprising at least two stiffening elements (7) extending within at least a portion of the second flange area each stiffening element adjoining the hub body at at least two joints (8), wherein each stiffening element extends in a length direction with reference to an extension direction (S-S) of the rotor shaft.

A method for determining a wind sector distribution comprising a plurality of wind sectors WS_n, with n = 1, ..., N, for the operation of a wind turbine (100) a wind turbine (100) and a control system (200) are specified, the method comprising the steps (S1, S2) of providing wind condition information (I_wc) representative of average wind conditions at the location of the wind turbine (100), and performing an optimization routine (OR) for maximizing an estimated annual energy production AEP of the wind turbine (100) based on the wind condition information (I_wc) and the plurality of wind sectors WS_n, wherein the optimization routine (OR) comprises determining the plurality of wind sectors WS_n, wherein for each wind sector WS_n an effective turbulence intensity I_eff_n, based on the wind condition information and an admissible turbulence intensity I_design_n, is determined, wherein each of the admissible turbulence intensities I_design_n corresponds to a specific power mode and is based on a plurality of design parameters of the wind turbine (100), a turbulence intensity ratio TIR_n = I_eff_n/I_design_n is determined for each of the wind sectors WS_n, and the optimization routine is performed with the constraint that a weighted combination of the turbulence intensity ratio TIR_n of all wind sectors WS_n is equal to or less than 1.

The present disclosure relates to a support assembly (200) for a wind turbine (100), comprising: - a first support structure (202) configured for supporting at least a rotor assembly, in particular a rotor bearing arrangement (206) of the wind turbine, and - a second support structure (204) which is configured to be rotatably mounted on top (103) of a tower (102) of the wind turbine (100), the tower (102) defining an axis (A-A), wherein the second support structure (204) is configured to support the first support structure, (202) - wherein the second support structure (204) is configured to form a plurality of support interfaces (216) with the first support structure (202). The present disclosure further relates to a wind turbine and method of assembling a support assembly.