Nordex Energy Patente

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.

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.

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 (202) for a wind turbine (100), comprising: - a first support structure (218) for supporting a main bearing housing (204) and a gearbox (206) of the wind turbine, and - a second support structure (220) which is configured to be rotatably mounted on top (103) of a tower (102) of the wind turbine (100) with the bottom side and which is configured to be mounted with the first support structure (218), - wherein the first support structure (218) comprises a surface (222) for the support of the gearbox and a first supporting section (224) below that surface (222), - wherein the second support structure (220) comprises a second supporting section (226) which is arranged directly below the first supporting section (224). The dislosure further relates to a wind turbine with a support assembly.

The method is for operating an energy storage system (200) which comprises an energy storage device (240) having a serial connection of energy storage cells (242). The energy storage system further comprises a plurality of contact points (244, 246, 248) across the serial connection for measuring a parameter (P) as well as a charging circuit (214) for charging the energy storage device. The method comprises a step of providing first information (I1) which is representative of an outcome of an operation performed on at least one measured value (M) of the parameter across at least one pair of contact points. In a further step, second information (I2) is provided which is representative of an outcome of an operation performed on at least one reference value (D) of the parameter across the at least one pair of contact points. The at least one reference value is the value of the parameter expected when the energy storage device is of a predefined type. Third information (I3) is determined depending on the first and the second information. The third information is representative of whether the energy storage system is of the predefined type. In a further step, operating information (OI_1, OI_2, OI_3) for the charging circuit is determined depending on the third information.

A method for compensating a misalignment of at least one component (1, 2) of a wind turbine (100) is specified, the method comprising - providing first information (I1) which is representative of at least one image (P1, P2) taken with an image capturing device (5) and indicating an arrangement of a first component (1) of the wind turbine (100) relative to a second component (2) of the wind turbine (100), - providing second information (I2) which is representative of at least one reference image (R1, R2) which corresponds to the at least one image (P1, P2), - comparing the first information (I1) to the second information (I2) and, based on the comparison, determining whether a misalignment of the first component (1) relative to the second component (2, 3) exists, and, - in case a misalignment is determined, executing a measure (M) to compensate the misalignment of the first component (1) relative to the second component (2).

A wind turbine rotor blade comprising a blade root, a blade tip, a leading edge, a trailing edge, a suction side, a pressure side (22) and a heatable surface area including at least one electrical heating element, wherein the heatable surface area covers a section of the leading edge and has a first edge facing the blade tip, a second edge facing the blade root, a third edge arranged on the suction side and a fourth edge arranged on the pressure side (22), characterized in that the wind turbine rotor blade comprises a first layer of an electrically insulating material, wherein the first layer is smaller than the heatable surface area and is arranged on top of the at least one electrical heating element along the leading edge and such that it extends beyond the first edge.

A serrated panel for a trailing edge of a wind turbine rotor blade, the serrated panel comprising • a plurality of teeth, each tooth having a tip, a base, two edges running from the tip to the base, a longitudinal axis, a pressure side surface and a suction side surface, and • a plurality of vanes arranged side by side with a gap between adjacent vanes, each vane beginning at one of said edges and extending in a rearward direction, wherein each vane has a vane length, a vane width and a vane height, characterized in that • the pressure side surfaces and/or the suction side surfaces of the teeth comprise wave elements beginning at or near one of the edges and extending in a forward direction, wherein each wave element has a crest which is aligned with one of the vanes and a wave element width which is larger than the vane width.

A serrated panel for a trailing edge of a wind turbine rotor blade, the serrated panel comprising• a plurality of teeth, each tooth having a tip, a base, two edges running from the tip to the base, a pressure side surface and a suction side surface, and• a plurality of vanes arranged side by side with a gap between each pair of adj acent vanes, each vane beginning at one of said edges and extending rearwards in a longitudinal direction, wherein each vane has a vane length, a vane width and a vane height, characterized in that• the pressure side surfaces of the teeth comprise a base surface and a plurality of humps, wherein each hump has a crest and a sloped, circumferential surface that transitions smoothly into the base surface.

A serrated panel for a trailing edge of a wind turbine rotor blade, the serrated panel comprising:• an attachment section having a leading edge, an attachment surface for connecting the serrated panel to a trailing edge of a wind turbine rotor blade, a rear end, and an external surface opposite the attachment surface,• a plurality of teeth, each tooth having a tip, a base which is arranged at the rear end of the attachment section, a longitudinal axis extending from the base to the tip, a pressure side surface, and a suction side surface,• wherein the external surface of the attachment section for each tooth has a transition surface forming a transition between the leading edge and the pressure side surface of the tooth, characterized in that• in a longitudinal section in a first plane that is perpendicular to the attachment surface and extends along the longitudinal axis of the tooth, the transition surface has a forward, concave section and a rearward, convex section, wherein the forward, concave section is arranged nearer to the leading edge of the attachment section than the rearward, convex section.

The invention concerns a wind turbine (100), comprising- a rotor hub (112) with a spinner (118), wherein the spinner (118) comprises a blade opening (124),- a wind turbine rotor blade (110) which is inserted with its root portion (114) into the blade opening (124) and connected to the rotor hub (112),- a rain deflector (200), the rain deflector (200) being arranged on an outer surface (130) of the wind turbine rotor blade (110) such that it surrounds the root portion (114) of the wind turbine rotor blade (110),- an intermediate cover (300), which is configured to be arranged in a circumferential gap (126) between the spinner (118) and the rain deflector (200) in order to seal the circumferential gap (126) between the spinner (118) and the rain deflector (200) such that both the rain deflector (200) and the intermediate cover (300) prevent water from entering the rotor hub (112).The invention also relates to an intermediate cover (300).

A method for operating a wind turbine (100) is specified, wherein the wind turbine has a rotor (10) with at least one rotor blade (1, 2, 3). The wind turbine is operable in a safety operation mode which is configured to slow down the rotation of the rotor. In the method, first information (I1) is representative of the operation mode in which the wind turbine is to be operated. The method comprises a step in which it is determined whether a first condition (C1) is fulfilled. The first condition comprises that a failure appears in the wind turbine during rotation of the rotor. If the first condition is fulfilled, second information (I2) is provided which is representative of the actual rotational speed of the rotor. Furthermore, third information (I3) is provided which is representative of the maximum allowable rotational speed of the rotor. Moreover, it is determined whether a second condition (C2) is fulfilled depending on the second and the third information. The second condition comprises that the actual rotational speed is at most the maximum allowable rotational speed. If the second condition is fulfilled, the first information is determined to be representative of the safety operation mode.Furthermore, a computer, a computer program, a computer-readable data carrier, a control device and a wind turbine are specified.

The invention concerns a rain deflector (200) for a wind turbine rotor blade (110). The rain deflector (200) comprises a strand profile (202) formed as one piece. The strand profile (202) is made from an elastomer material. The rain deflector (200) is configured to be placed on an outer surface (130) of the wind turbine rotor blade (110) such that the strand profile (202) surrounds a root portion (114) of the wind turbine rotor blade (110). The invention also relates to a wind turbine rotor blade (110) .

A method of manufacturing a wind turbine rotor blade comprising the following steps:a) providing a wind turbine rotor blade having a first electrical supply line and a second electrical supply line,b) providing a set of heating elements,c) arranging one of the heating elements on the wind turbine rotor blade and connecting this heating element to the first electrical supply line and to the second electrical supply line,d) measuring an electrical resistance between the first electrical supply line and the second electrical supply line and comparing the measured electrical resistance to an expected electrical resistance of a parallel connection of all heating elements already connected to the first electrical supply line and to the second electrical supply line,e) if the measured electrical resistance corresponds to the expected electrical resistance, completing the steps c) and d) for another one of the electrical heating elements of the set of heating elements until all heating elements are connected.

A method for operating a wind turbine (1) for reducing a risk of wind turbine overloading in the presence of a wind gust event is provided, the method comprising the steps: - providing first information (II) which is representative of a rate of change of a first wind turbine parameter (P1) comprising at least one of a first wind turbine loading parameter and a first wind turbine operating parameter over time, wherein each of the first wind turbine loading parameter and the first wind turbine operating parameter depends on a wind speed at the location of the wind turbine (1), - determining an adjustable first threshold (T1) considering the first information (I1), - comparing, in a first comparison step, the first information (II) to the first threshold (T1) and generating a first trigger signal (TS1) in case the first information (II) exceeds the first threshold (T1), - generating a control action (CA) intended to reduce the risk of wind turbine overloading caused by the wind gust event in case an action trigger (AT) is generated, wherein the generation of the action trigger (AT) requires that at least the first trigger signal (TS1) is generated. Furthermore, a wind turbine (1) with a control system (10) is provided.

The invention concerns a trimming device (300) for trimming a prefabricated round root component (200) for a wind turbine rotor blade (110), comprising - a support structure (302), - a table (308), the table (308) being - rotatably supported on the support structure (302), and - configured to support the prefabricated round root component (200), - a trimming tool (320), the trimming tool (320) being fixed to the support structure (302) and being configured to trim the round root component (200) along its periphery (204) when the round root component (200) is supported on the table (308), in particular to remove excess material. The invention also concerns a method.

The invention relates to a method of manufacturing a half shell (132) of a wind turbine rotor blade, using a mould (141) which comprises a layup surface (142) and a protrusion (143), wherein the protrusion (143) defines an edge of the mould (141), comprising the steps of: i. arranging a block (149) of sacrificial material on the protrusion (143), ii. arranging a plurality of laminate layers (145, 146, 147) on the layup surface (142), wherein at least one laminate layer (145, 146) of the plurality of laminate layers (145, 146, 147) covers the block (149) of sacrificial material on the protrusion (143), iii. removing the block (149) of sacrificial material and the part of the at least one laminate layer (145, 146) covering the block (149) of sacrificial material.

The invention concerns a tool (200) for handling and positioning a root component (300) at a root portion (114) of a wind turbine rotor blade (1) in order to mount the root component (300) at the root portion (114), the tool (200) comprising- a mounting portion (202) configured such that the root component (300) can be releasably connected to the mounting portion (202),- means (206) for connecting the tool (200) to a crane in order to move and position the tool (200) with the help of the crane and/or- means (208) for receiving the fork of a fork lifter in order to move and position the tool (200) with the help of the fork lifter.The invention further concerns a method for handling and positioning a root component (300) at a root portion (114) of a wind turbine rotor blade (110) in order to mount the root component (300) at the root portion (114).

A method comprising: monitoring active power provided by at least one wind turbine generator, WTG, prior to a fault event that causes at least one fault affecting the at least one WTG in a predetermined time duration, each fault of the at least one fault causing a voltage reduction; determining a voltage reduction parameter indicative of the voltage reduction of at least one fault in the fault event when the fault event occurs; and determining an active power ramp up control strategy for the at least one WTG at least based on the active power and the voltage reduction parameter. Also, a computing device or system, a wind turbine generator or a wind farm, and a computer program.

The invention relates to a method for removing a peel ply layer (152) from a wind turbine rotor blade component (136), comprising the steps of: i) providing a wind turbine rotor blade component (136) comprising a surface (153, 154) which is covered by a peel ply layer (152), ii) providing a cart (141) comprising a spindle (143) and a motor (142) configured to rotate the spindle (143), iii) connecting a first portion of the peel ply layer (152) with the spindle (143), and iv) rotating the spindle (143) via the motor (142) such that the rotation of the spindle (143) pulls the peel ply layer (152) from the wind turbine rotor blade component (136) and winds the peel ply layer (152) around the spindle (143), wherein the cart (141) is propelled forward in a longitudinal direction (120) of the wind turbine rotor blade component (136). The invention also concerns a device of performing this method.

A transportation tool (200) for a rotor hub (112) of a wind turbine (100) comprises:- a first fastener (300), the first fastener (300) being configured to be fixed to a first side (113) of the rotor hub (112) and to be coupled with a vehicle (500),- a second fastener (400), the second fastener (400) being configured to be fixed to a second side (114) of the rotor hub (112) and to be coupled with the vehicle (500), wherein the second side (114) is opposite the first side (113) along a first direction (121), wherein the first fastener (300) and the second fastener (400) are fixable to the rotor hub (112) independently of each other.

A heating element for a wind turbine rotor blade comprising:• two electrical connectors adapted to be connected to electrical supply lines of the wind turbine rotor blade, and• a defined geometry configured to be arranged on a specified surface area of the wind turbine rotor blade, characterized in that• the heating element is provided with a position indicator adapted to be aligned with a leading edge of the wind turbine rotor blade.

A heating element for a wind turbine rotor blade comprising: • a carrier layer, • a heating conductor fastened to the carrier layer, • wherein the heating conductor comprises a first end section which extends beyond an edge of the carrier layer, wherein the first end section is adapted to be connected to an electrical supply line of the wind turbine rotor blade, characterized in that • the heating conductor is guided through an adjustment section in which the heating conductor is movably fastened to the carrier layer, thereby enabling an adjustment of a length of the first end section by shifting the heating conductor in the adjustment section with reference to the carrier layer along a longitudinal direction of the heating conductor.

A heating system for a wind turbine rotor blade comprising• a plurality of heating elements to be installed in a row along a longitudinal direction,• wherein each of the heating elements comprises a carrier layer and a heating conductor fastened to the carrier layer,• wherein each carrier layer has a first edge facing the blade tip and a second edge facing the blade root, wherein• the carrier layers along the first edge have a strip-shaped margin with a first width and along the second edge have a strip-shaped margin with a second width,• for each pair of neighboring heating elements, a first edge of one of the heating elements is arranged adjacent to a second edge of the other one of the heating elements, and• the first width and the second width are dimensioned to arrange the heating conductors of the pair of heating elements in a predetermined distance sufficient to prevent flashovers between the heating conductors.

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Doppelt-gespeiste Windenergieanlage (100) mit einem Statorpfad und einem Rotorpfad, der einen rotorseitigen (207) und einen netzseitigen (208) Umrichter aufweist, wobei der Rotorpfad und der Statorpfad in einem Kopplungspunkt (218) münden und gemeinsam über einen Mittelspannungstransformator (209) an ein elektrisches Versorgungsnetz (210) angeschlossen sind, wobei jeweils ein Statorschütz in dem Statorpfad und ein Leistungsschalter (214) in dem Rotorpfad vorgesehen sind, wobei eine erste Überspannungsschutzeinrichtung (215) zwischen Mittelspannungstransformator und Statorschütz vorgesehen ist, um dieses vor Überspannungen aus dem Mittelspannungsnetz zu schützen. Fig. 2

The present disclosure relates to a support structure (200, 240, 250) inside a nacelle (106) of a wind turbine (100) comprising a connecting portion (202) configured for attaching the support structure (200, 240, 250) to a main frame (210) of the wind turbine (100), a first supporting portion (204) for supporting at least a generator (216) of the wind turbine (100), and a second supporting portion (206) for supporting at least one other component of the wind turbine (100), in particular at least one electrical component of the wind turbine (100). In an attached state, the first supporting portion (204) adjoins the connecting portion (202), the second supporting portion (206) adjoins the connecting portion (202), and the second supporting portion (206) is arranged below the first supporting portion (204) .The disclosure further relates to a wind turbine (100), comprising a tower (102), a nacelle (106) attached to the tower (102) and supporting a rotor (108), and a plurality of rotor blades (110) attached to the rotor (108).

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A wind turbine rotor blade comprising • a blade root, • a blade tip, • a blade length, • a tip section including the blade tip and extending over 5 % of the blade length or less, • a main section extending over 50 % of the blade length or more and ending at the tip section, and • a cross section having, at each position along the blade length, - a chord and - a maximum thickness at a maximum thickness chord position, • wherein the wind turbine rotor blade is designed to be operated with variable pitch angle, a design pitch angle being the angle at which the wind turbine rotor at a design tip speed ratio extracts maximum power from the wind, • wherein in a projection onto the rotor plane of the wind turbine rotor blade arranged at the design pitch angle, the maximum thickness chord position throughout the main section is offset from the pitch axis towards the leading edge.

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