Method to operate a wind turbine rotor, the rotor being arranged to rotate about an axis A, the rotor having a first pitch drive and a first rotor blade, the first pitch drive being arranged for changing a first pitch angle β1 of the first rotor blade, the method comprising step: S1 changing the first pitch angle β1 while the first rotor blade rotates about axis A, particularly with an electronic control circuit arranged for instructing the first pitch drive.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
2.
TOWER ASSEMBLY FOR A WIND TURBINE INSTALLATION AND METHOD OF ITS MANUFACTURING
Tower assembly for a wind turbine installation, the tower assembly comprising a concrete tubular first tower segment, having a first channel aligned with a longitudinal axis of the first tower segment for a pre-stressing cable, a concrete tubular second tower segment, having a second channel aligned with a longitudinal axis of the second tower segment for a pre-stressing cable, wherein the first tower segment is arranged on top of the second tower segment, such that the first channel and the second channel are aligned.
E04H 12/12 - Structures faites en matériaux spécifiés en béton ou autre matériau analogue à la pierre, avec ou sans armature interne ou externe, p.ex. avec revêtements métalliques, avec éléments de coffrage permanents
The Blade segment comprises a segment body extending along a longitudinal axis A and the segment body has a cavity accessible through a first axial end of the segment body. The segment body has a segment wall section extending from the first axial end along axis A and limiting the cavity. Axis A can be arranged in parallel with the leading and/or trailing edge of the blade segment. Further, the blade segment has a winglet connector arranged for being mechanically connected with a winglet, the winglet connector having a first panel and a second panel, which are spaced apart along axis A and are mechanically connected by one or more struts of the winglet connector, wherein the first and second panel are mechanically and/or materially connected with the segment wall section inside the cavity.
Disclosed is a wind turbine rotor comprising a rotor hub, one or more blades mounted on the rotor hub, wherein each blade comprises a non-pitchable portion and a pitchable portion, and a blade pitch system with a pitch bearing arrangement. The pitch bearing arrangement has a pitch shaft and two or more bearings provided on said pitch shaft. The two or more bearings are spaced from each other in the axial direction of the pitch shaft. The pitchable portion is connected to a first end of the pitch shaft so as to be integrally rotatable therewith.
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
A Bearing arrangement for a wind turbine generator having a stator and a rotor is provided. The bearing arrangement comprises a first, a second and a third roller unit group (110,112,114) each comprising multiple roller units (108) for rotatably supporting the rotor with respect to said stator. The roller units are circularly arranged around a bearing arrangement axis. Furthermore, each roller unit comprises a single roller and is individually replaceable. In the bearing arrangement, the roller units of the first and second roller unit group are arranged with their longitudinal axes extending substantially perpendicular with respect to the bearing arrangement axis. The roller units of the third roller unit group are arranged with their longitudinal axes extending substantially parallel with said bearing arrangement axis. The bearing arrangement further comprises a rotor ring and the roller units are arranged in rolling contact with the rotor ring.
Apparatus (100) for assembling blade sections (200-1, 200-2) for forming a blade (200), the apparatus (100) comprising:a first jaw portion (102) and a second jaw portion (104) pivotably connectable to each other at a first end (106) of said first and second jaw portions (102, 104), wherein said first and second jaw portions (102, 104) include a second end (108) opposite to said first end (106), and wherein said first and second jaw portions (102, 104) have respective opposing surfaces (118, 120) extending between said first end (106) and said second end (108), said opposing surfaces (118, 120) being adapted in shape to an outer surface of respective joining end portions (212, 214) of said blade sections (200-1, 200-2) to be assembled; and a fastening means (110) for mounting said first and second jaw portions (102, 104) at said joining end portions (212, 214) of the blade sections (200-1, 200-2), wherein said fastening means (110) is disposed at said second end (108) of each of said first and second jaw portion (102) forming a free end.
A retrofitted wind turbine installation comprising a newly constructed tower assembly and elements demounted from an existing wind turbine installation is disclosed. Furthermore, a method for retrofitting of an existing wind turbine installation comprising the steps of providing a new tower assembly, demounting one or more elements from an existing wind turbine installation, mounting the one or more elements from the existing wind turbine installation on the new tower assembly is disclosed as well.
E04H 12/08 - Structures faites en matériaux spécifiés en métal
E04H 12/12 - Structures faites en matériaux spécifiés en béton ou autre matériau analogue à la pierre, avec ou sans armature interne ou externe, p.ex. avec revêtements métalliques, avec éléments de coffrage permanents
E04H 12/20 - Moyens de support latéraux à cet effet, p.ex. utilisant des amarres ou des entretoises
E04H 12/34 - Dispositions pour élever ou abaisser des tours, mâts, poteaux, corps de cheminée ou analogues
A tower assembly for supporting a wind turbine comprises a concrete tower portion having two or more concrete tower segments arranged upon each other, wherein each of said two or more concrete tower segments is a hollow segment. The tower assembly further comprises a supporting means capable of receiving bending loads from said concrete tower portion wherein said supporting means is connected to said concrete tower portion at a predetermined height and it sticks to the ground at a pre-determined distance from the concrete tower portion. The wall thickness of the lower wall of two adjacent concrete tower segments is different from the wall thickness of the upper one of said two adjacent concrete tower segments.
E04H 12/08 - Structures faites en matériaux spécifiés en métal
E04H 12/12 - Structures faites en matériaux spécifiés en béton ou autre matériau analogue à la pierre, avec ou sans armature interne ou externe, p.ex. avec revêtements métalliques, avec éléments de coffrage permanents
E04H 12/20 - Moyens de support latéraux à cet effet, p.ex. utilisant des amarres ou des entretoises
E04H 12/34 - Dispositions pour élever ou abaisser des tours, mâts, poteaux, corps de cheminée ou analogues
9.
MOUNTABLE WING TIP DEVICE FOR MOUNTING ON A ROTOR BLADE OF A WIND TURBINE ARRANGEMENT
A mountable wing tip device (102) for mounting on a rotor blade of a wind turbine is disclosed which comprises a forward extremity (106) and at least two rearward extremities (108A, 108B, 112), wherein the forward extremity (106) and the at least two rearward extremities (108A, 108B, 112) are triangularly arranged, a leading edge region extending between the forward extremity (106) and the at least two rearward extremities (108A, 108B, 112), and a trailing edge region extending between the rearward extremities (108A, 108B, 112), a root region (113) at which the wing tip device (102) is mountable on an end of the rotor blade, wherein the root region (113) is positioned between the leading edge region and the trailing edge region.
A wind turbine arrangement is disclosed which comprises a rotor hub (3), a generator (4, 6), a nacelle (7) and a yaw shaft (9). The rotor hub (3) is coupled with a plurality of rotor blades. The generator (4, 6) has a rotor (4) and a stator (6), wherein the rotor (4) has mounted thereupon the rotor hub (3). The rotor (4) is rotatably supported on the stator (6). The nacelle (7) supports the stator (6) and the yaw shaft (9) supports the nacelle (7).
The cooling system comprises a nacelle body, a heat exchanger mounted on an outer surface of the nacelle body, a generator having a stator with holes disposed close to the windings, a rectifier having liquid circulating heat sink, a rotor and a hub having a plurality of fins, a pump, one or more fans, and a plurality of pipes for carrying a coolant therethrough.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to a segmented rotor hub for wind turbines, particularly, having an aerodynamic profile on its front side and having a completely open end on the side configured to receive one end of the circumference of a generator rotor, hereinafter referred to as a rear end. The rotor hub comprises plurality of hub segments.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
An apparatus for assembling blade sections for forming a blade is provided. The apparatus comprises at least two members (1, 2) movable with respect to each other, said members having respective opposing surfaces (2A, 2B) forming a pressing space for pressing outer surfaces of preassembled blade sections in a transition between the sections.
A blade assembly for a wind turbine rotor is provided, the blade assembly comprising at least two blade sections (1, 2) being longitudinally joinable at respective joining end portions (10, 20) for forming a blade. One of said blade sections has at least one cavity (11) in its joining end portion (10) and the other of said blade sections has at least one protrusion (21) at its joining end portion (20). Said cavity (11) is contractible to a contracted position in a direction which is substantially perpendicular to a longitudinal direction of the blade.
A wind turbine rotor is provided which comprises a hub (2) and at least one blade (20) supported by said hub (2). The blade (20) comprises a first blade section (3) and a second blade section (4), wherein said first blade section (3) is mounted to said hub (2) stationary with respect to said hub (2) and said second blade section (4) is supported by said first blade section (3) rotatably adjustable about a longitudinal axis of said blade (20) wherein said second blade section (4) is supported by said first blade section (3) by at least two bearings (7a, 7b) which are spaced with respect to said longitudinal axis of said blade (20).
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
F03D 7/02 - Commande des mécanismes moteurs à vent les mécanismes moteurs à vent ayant l'axe de rotation sensiblement parallèle au flux d'air pénétrant dans le rotor
A cooling system of a wind turbine is provided which includes a generator (10), a housing portion (1), and a hub (2) which is rotatable with respect to the housing portion (1) and drivingly connected to the generator (10). The hub (2) supports at least one blade (4). The housing portion (1) and the hub (2) enclose a cavity for accommodating at least said generator. Heat exchange means (6) are provided on the outer surface of said hub (2) for transferring at least a part of heat produced by said generator (10) in operation to the outside.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
F03D 9/00 - Adaptations des mécanismes moteurs à vent pour une utilisation particulière; Combinaisons des mécanismes moteurs à vent avec les appareils qu’ils entrainent; Mécanismes moteurs à vent spécialement adaptés à l’installation dans des endroits particuliers
H02K 7/18 - Association structurelle de génératrices électriques à des moteurs mécaniques d'entraînement, p.ex. à des turbines
H02K 5/18 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des nervures ou des ailettes pour améliorer la transmission de la chaleur
brevets