СПОСОБ И УСТРОЙСТВО РЕГУЛИРОВКИ ДЛЯ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ, ЦИФРОВОЙ НОСИТЕЛЬ ДАННЫХ И ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

FIELD: power industry. SUBSTANCE: method for operating a wind power plant (1000) containing a nacelle in which a wind-driven rotor is connected to the transmission of motion with the generator by means of a rotor hub, where, in the case of a stop of the wind power plant, due to operational requirements, the rotor (3) is stopped and fixed, The method includes the steps of: braking the rotor (3), positioning the rotor (3) in the stop position, fixing the rotor (3) in the stop position (P1, P2), setting (S2) the end position, brake the (SI) rotor (3) being adjusted by way stop position agreed with the target position, and for positioning (S-II) to the target position brake the rotor automatically to a stop in the stop position, and for positioning (S-II) for a given end position, the rotor is automatically braked to stop at the stop position, and to lock (S-III) in the stop position, the mechanical locking device is locked to automatically lock the rotor in the stop position, the stop position is set (S6) with using the fixing torque of the generator as a clamp for fixing and locking the rotor, the final position of the rotor being set by specifying the angular position of the rotor and matching the angular position with the position of the clamps And the generator. EFFECT: reliable positioning of the rotor of the wind power plant during its shutdown. 29 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 633 306 C2 (51) МПК F03D 1/00 (2006.01) F03D 7/02 (2006.01) F03D 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015112128, 20.06.2013 (24) Дата начала отсчета срока действия патента: 20.06.2013 (72) Автор(ы): БАУМГЕРТЕЛЬ Кристиан (DE) (73) Патентообладатель(и): ВОББЕН ПРОПЕРТИЗ ГМБХ (DE) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: EP 2072814 A2, 24.06.2009. RU Приоритет(ы): (30) Конвенционный приоритет: 2430463 C2, 27.09.2011. WO 2012/095111 A1, 19.07.2012. RU ...

Windkraftanlagenrotorblatt mit ausfallsicheren Luftbremsklappen

Ein Windkraftanlagenblatt enthält eine Luftbremsklappe, die innerhalb einer Aussparung in der Saugseite des Blattes bündig abschließend montiert ist. Die Luftbremsklappe lässt sich von einer eingezogenen Stellung innerhalb der Aussparung zu einer Offenstellung betätigen, in der die Luftbremsklappe quer oder vertikal von der Saugseite weg ragt. Ein Ausfallsicherungsaktuator ist mit der Luftbremsklappe betriebsmäßig verbunden und konfiguriert, um die Luftbremsklappe in einem energieversorgten Zustand des Aktuators in der eingezogenen Stellung zu halten und um die Luftbremsklappe bei einem Verlust der Energieversorgung für den Aktuator für die Offenstellung freizugeben.

Vertical axis wind turbine auto blade pitching mechanism

VERTICAL AXIS WINDMILL

A vertical shaft windmill in which blades are installed in a plane orthogonal to the vertical rotary shaft and at same angular intervals around the vertical rotary shaft. The blade is formed in a streamline airfoil having a lift coefficient of 1.0 or higher. The blade comprises an opening/closing member the front end of which is pivotally supported on the rear surface of the blade and the rear end of which is opened and closed relative to the blade and an control means for controlling the opening and closing operations of the opening/closing member according to the ratio of the rotational speed of the blade to a wind velocity.

WIND TURBINE BLADE WITH LIFT-REGULATING MEANS IN FORM OF SLOTS OR HOLES

The blade comprises adjustable lift-regulating means extending in longitudinal direction of the blade, and activating means for adjustment of the lift-regulating means to alter aerodynamic properties of the blade. The lift-regulating means are adapted and arranged so that by activation of the activating means, lift is reduced in a zone extending in the longitudinal direction of the blade from a first position proximate the blade tip to a second position between the first position and the root area. This second position is variable in the longitudinal direction of the blade. The lift-regulating means are formed of holes or at least one slot arranged in at least one longitudinally extending zone allowing interior cavity of the blade to communicate with exterior. The lift-regulating means are adjustable-by activating means to regulate amount of air emitted from the interior cavity to the exterior to alter the aerodynamic properties of the blade.

BRAKING DEVICE FOR A WIND TURBINE HAVING A VERTICAL AXIS

Dispositif de freinage pour éolienne (10) à axe vertical (20) comprenant un volet (30) apte à basculer autour d'un axe de basculement (40), ledit volet (30) ayant un centre de gravité (50) positionné en-dehors de l'axe de basculement (40). Le dispositif de freinage de l'invention est caractérisé en ce que le dispositif de freinage (1 ) comprend en outre un limiteur de couple (60) ayant un couple de déclenchement (70), en ce que le volet (30) est monté sur ledit limiteur de couple (60), et en ce que ledit limiteur de couple (60) est apte à permettre un basculement dudit volet (30) d'un angle de basculement (80) autour dudit axe de basculement (40) pour une vitesse de rotation dudit volet (30) autour dudit axe vertical (20) induisant un couple au niveau du limiteur de couple (60) supérieur ou égal au couple de déclenchement. Braking device for wind turbine (10) with vertical axis (20) comprising a flap (30) capable of tilting about a tilting axis (40), said flap (30) having a center of gravity (50) positioned in outside the tilting axis (40). The braking device of the invention is characterized in that the braking device (1) further comprises a torque limiter (60) having a release torque (70), in that the flap (30) is mounted on said torque limiter (60), and in that said torque limiter (60) is able to allow tilting of said flap (30) by a tilting angle (80) around said tilting axis (40) for a speed of rotation of said flap (30) about said vertical axis (20) inducing a torque at the torque limiter (60) greater than or equal to the tripping torque.

Schnellaufender Windmotor.

Wind wheel, has tie bar provided with brake assembly, and adjustable spring exhibiting tensile force that is greater than centrifugal force in normal wind conditions, where brake cylinder is arranged at tie bar

The wheel has a tie bar (2) provided with a brake assembly, where a brake cylinder (3) is arranged at the tie bar. A brake bar, brake linings (4) and a counter weight (8) are pressed on the brake cylinder by centrifugal force to brake a movement of the tie bar. An adjustable spring (7) is attached at the brake bar and exhibits a tensile force that is greater than centrifugal force in normal wind conditions and smaller than the centrifugal force in intense wind conditions, where the centrifugal force outwardly pushes the counter weight.

Aerodynamic regulating device with automatic control for blades of aero-engine and other applications

METHOD FOR SWITCHING OFF A VERTICAL AXIS WIND TURBINE AND CORRESPONDING VERTICAL AXIS WIND TURBINE

METHOD FOR SWITCHING OFF A VERTICAL AXIS WIND TURBINE AND CORRESPONDING VERTICAL AXIS WIND TURBINE

Ce procédé comprend une étape de mise en drapeau du rotor (4) de l'éolienne (2) à axe vertical, comprenant le calage de pales (14) selon une configuration de calage dans laquelle chaque pale (14) a un angle de calage respectif et dans laquelle le rotor (4) possède une unique position angulaire d'équilibre stable relativement à la direction du vent, en laissant le rotor (4) libre de tourner pour s'orienter par rapport à la direction du vent.

Wind turbine i.e. vertical axis wind turbine, for converting wind energy into electrical energy, has incident air closing units formed of closed surfaces orienting incident air stream on units toward unclosed part of rotor

La présente invention a pour objet une éolienne (1) comprenant un premier rotor (6), un deuxième rotor (7) ayant le même axe de rotation que le premier rotor (6) et étant apte à tourner de manière indépendante du premier rotor (6), chaque rotor (6, 7) étant apte à être couplé à un moyen de conversion du mouvement de rotation du rotor (6, 7) en énergie, une face fonctionnelle telle que l'air incident sur l éolienne (1) par la face fonctionnelle est converti en énergie par l'éolienne (1), l'éolienne (1) comprenant en outre des moyens d'obturation (35, 36) de l'air incident sur chaque rotor (6, 7), lesdits moyens d'obturation (35, 36) définissant dans la face fonctionnelle pour chaque rotor (6, 7) une partie obturée de rotor et une partie non obturée de rotor séparées suivant la ligne médiane de la face fonctionnelle de même direction que l'axe de rotation des rotors (6, 7), les parties obturées de rotor étant situées de part et d'autre de la ligne médiane de la face fonctionnelle de même ...

VERTICAL SHAFT WINDMILL

A vertical shaft windmill in which blades are installed in a plane orthogonal to the vertical rotary shaft and at same angular intervals around the vertical rotary shaft. The blade is formed in a streamline airfoil having a lift coefficient of 1.0 or higher. The blade comprises an opening/closing member the front end of which is pivotally supported on the rear surface of the blade and the rear end of which is opened and closed relative to the blade and an control means for controlling the opening and closing operations of the opening/closing member according to the ratio of the rotational speed of the blade to a wind velocity. COPYRIGHT KIPO & WIPO 2010 ...

DEVICE FOR REGULATING THE PITCH OF THE VANES OF A WIND GENERATOR

BRAKING DEVICES FOR VERTICAL AXIS WIND TURBINES

Braking devices for wind turbines having a vertical axis are disclosed. An example braking device includes a flap able to tip about a tipping axis. The example flap has a center of gravity positioned outside the tipping axis. In addition, the example braking device disclosed herein includes a torque limiter having a disengagement torque. In addition, the example flap is mounted on the torque limiter, and the torque limiter is to allow the flap to tip through a tipping angle about the tipping axis for a rotational speed of the flap about the vertical axis which induces a torque at the torque limiter greater than or equal to the disengagement torque.

Adjusting pitch of wind turbine blades in emergency situation.

Die Erfindung betrifft eine Vorrichtung zum Verstellen von Rotorblättern einer Windkraftanlage mit einem Verstellmotor und mit einer Notstromversorgungseinrichtung enthaltend einen Energiespeicher, der im Notfallbetrieb mit dem Verstellmotor verbindbar ist zur Wahlstellung der für eine Verstellung der Rotorblätter in eine Fahnenstellung derselben erforderlichen elektrischen Energie, wobei die Notstromversorgungseinrichtung (2) mit einer Netzstromversorgungseinrichtung (1) gekoppelt ist, die für den elektrischen Energiefluss von einem Stromnetz zu dem Verstellmotor (3) einen stromnetzseitigen Gleichrichter (4), einen demselben nachgeordneten Zwischenkreis (5) und einem demselben nachgeordneten Wechselrichter (6) aufweist, und dass der Energiespeicher (8) mittels eines Wandlers (9) an dem Zwischenkreis (5) der Netzstromversorgungseinrichtung (2) gekoppelt ist, derart, dass im Notfallbetrieb zumindest eine im Normalbetrieb am Zwischenkreis (5) anliegende Zwischenkreisnennspannung (Uz) bereitgestellt ...

Aerodynamic overspeed limitation for wind turbine rotor(s)

A horizontal axis wind turbine blade configuration is disclosed which can dissipate the energy which would otherwise exceed the capacity of the energy conversion system, when the wind speed and/or the wind turbine rotational speed exceed(s) levels established by the particular design. 'Auxiliary Aerofoil Section(s)' are connected to a wind turbine rotor hub which under particular operating conditions dissipate some of, and under severe conditions dissipate virtually all of, the energy that the conventional wind turbine blade(s) or blade section(s) extract from the wind. The Auxiliary Aerofoil Section(s) are configured to function as a propeller using aerodynamic lift as the principle energy dissipation mechanism when the rotor speed exceeds a certain value for a particular pertaining wind speed, that rotor speed being an outcome of the overall design. The 'Auxiliary Aerofoil Sections" may be provided at the tips of the primary aerofoil sections or separate auxiliary and primary blades may ...

AIR TURBINE

WIND TURBINE WITH VERTICAL AXES WITH CONTROL DEVICE AS WELL AS PROCEDURE FOR THE AIR BRAKE

METHOD AND REGULATING DEVICE FOR A WIND POWER INSTALLATION AND COMPUTER PROGRAM PRODUCT, DIGITAL STORAGE MEDIUM AND WIND POWER INSTALLATION

The invention concerns a method of operating a wind power installation (1000) in which the rotor (3) is brought to a halt and fixed, comprising the steps: braking the rotor (3), positioning the rotor (3) at a stopped position, and fixing the rotor (3) in the stopped position (P1, P2). According to the invention it is provided that an end position is predetermined (S2), the rotor (3) is braked (S-I) in regulated fashion to a stopped position associated with the end position, and for positioning (S-II) for the predetermined end position the rotor is braked in an automated procedure until stopped at the stopped position, and for fixing (S-III) in the stopped position a mechanical fixing device is applied, in particular automatically.

ВЕТРЯНАЯ ТУРБИНА С ВЕРТИКАЛЬНОЙ ОСЬЮ ВРАЩЕНИЯ И СПОСОБ АЭРОДИНАМИЧЕСКОГО ТОРМОЖЕНИЯ ТАКОЙ ТУРБИНЫ

Представлена ветряная турбина с вертикальной осью вращения, содержащая компоненты для обеспечения наиболее эффективного средства управления вращением ветряной турбины с вертикальной осью с помощью тормоза, выполненным с возможностью активации без внешнего приведения в действие в ситуациях неисправности в работе и прекращения работы ветряной турбины с вертикальной осью. Таким образом, элемент массы используется для хранения механической энергии, которая, в свою очередь, используется для выполнения операции аэродинамического торможения. Также предусмотрено средство для управления и ограничения количества вращательного момента, поглощаемого турбиной в условиях сильного ветра, и, таким образом, обеспечивается возможность аккумулирования электрической/механической энергии за пределами нормальных рабочих скоростей ветра турбин.

CONTROL DEVICE FOR THE AIR BRAKE OF THE CONVERTER OF WIND ENERGY AND THE METHOD OF THE BRAKING

VERTICAL SHAFT WINDMILL

Method and regulating device for a wind power installation and computer program product, digital storage medium and wind power installation

本發明係關於一種操作一風力發電設施(1000)之方法，其中使轉子(3)停住且固定，該方法包含以下步驟：制動轉子(3)；將轉子(3)定位在一停止位置處；及將轉子(3)固定在停止位置(P1,P2)中。根據本發明，其條件為：預定一終端位置(S2)，以調節方式將轉子(3)制動(S-I)至與終端位置相關聯之一停止位置，及為針對預定終端位置進行定位(S-II)，以一自動程序制動該轉子直至停止在停止位置處，及為了在停止位置中進行固定(S-III)，施加一機械固定裝置，且特定而言係自動地施加。

CONTROL OF A WIND TURBINE ROTOR DURING A STOP PROCESS USING PITCH AND A SURFACE ALTERING DEVICE

A method for controlling a wind turbine during a stop process thereof from an operating state to a stand-still state, wherein the wind turbine comprises a tower and a rotor with a plurality of pitchable rotor blades, each blade comprising a main blade body and at least one trailing edge flap, which is movable with respect to the main blade body in order to alter the aerodynamic surface of the blade. In the operating state, the tower is deflected in a downwind direction due to the aerodynamic thrust force on the rotor, and the method for controlling the stop process comprises the steps of moving the at least one trailing edge flap towards the suction side of the blade in order to alleviate the aerodynamic load on the rotor, whereby the tower starts to move forward in the upwind direction, and subsequently pitching the blades to further alleviate the aerodynamic load on the rotor.

METHOD AND CONTROL DEVICE FOR A WIND TURBINE, AND COMPUTER PROGRAM PRODUCT, DIGITAL STORAGE MEDIUM AND WIND TURBINE

The invention relates to a method for operating a wind turbine (1000), in which method the rotor (3) is brought to a standstill and locked, having the steps: braking the rotor (3); positioning the rotor (3) in a standstill position; immobilizing the rotor (3) in the standstill position (P1, P2). It is provided according to the invention that a final position is predefined (S2), the rotor (3) is braked (S-I) in controlled fashion to a standstill position assigned to the final position, and for the positioning (S-II) for the predefined final position, the rotor is automatically braked until it comes to a standstill in the standstill position, and for the immobilization (S-III) in the standstill position, a mechanical immobilizing device is engaged, in particular automatically.

METHOD AND DEVICE FOR CONTROLLING FLOATING BODY WIND TURBINE POWER GENERATING APPARATUS, AND FLOATING BODY WIND TURBINE POWER GENERATING APPARATUS

A method of controlling a floating-body wind turbine power generating apparatus including a wind turbine generator disposed on a floating body includes a pitch-angle increasing step of increasing a pitch angle of a blade of the wind turbine generator when the wind turbine generator is stopped, so that an aerodynamic braking force is applied to a rotor of the wind turbine generator. In the pitch-angle increasing step, a first change rate of the pitch angle of the blade in a first period during which the wind turbine generator is in an inclining motion toward an upwind side from a vertical direction due to sway of the floating body, is smaller than a second change rate of the pitch angle of the blade in a second period during which the wind turbine generator is in an inclining motion toward a downwind side from the vertical direction due to the sway of the floating body. 1. A method of controlling a floating-body wind turbine power generating apparatus including a wind turbine generator disposed on a floating body , the method comprisinga pitch-angle decreasing step of decreasing a pitch angle of a blade of the wind turbine generator when the wind turbine generator is started, so that a lift applied to the blade of the wind turbine generator increases,wherein, in the pitch-angle decreasing step, a third change rate of the pitch angle of the blade in a third period during which the wind turbine generator is in an inclining motion toward an upwind side from a vertical direction due to sway of the floating body, is larger than a fourth change rate of the pitch angle of the blade in a fourth period during which the wind turbine generator is in an inclining motion toward a downwind side from the vertical direction due to the sway of the floating body.2. The method of controlling a floating-body wind turbine power generating apparatus according to claim 1 ,wherein, in the pitch-angle decreasing step, a change rate of the pitch angle of the blade in the total period during ...

Vertikalachsen-Windturbine mit Steuerungsvorrichtung sowie Verfahren zum aerodynamischen Bremsen

AIR TURBINE

ACTIVE FLOW CONTROL DEVICE AND PROCEDURE FOR CAUSING A FLUID BOUNDARY LAYER OF A WIND TURBINE BLADE

Vertical axis wind turbine with control system and method of aerodynamic braking

ADJUSTING PITCH OF WIND TURBINE BLADES IN EMERGENCY SITUATION.

CONTROL DEVICE AND METHOD FOR AN AERODYNAMIC BRAKE OF A WIND ENERGY CONVERTER

A wear-free, self-contained control device for an aerodynamic emergency brake of a wind energy converter is presented that comprises multiple components in order to provide a most effective means to control the rotation of a vertical axis wind turbine by a brake, which is able to activate itself without external actuation in malfunction situations and is able to shut down the vertical axis wind turbine. Therefore, a mass element is utilised to store mechanical energy which in turn is used to deploy an aerodynamic braking operation. It also represents a means to control and limit the amount of torque, as absorbed by the turbine in high- wind conditions, and thus provides the ability to harvest electrical /mechanical energy, beyond the normal operational wind speeds of turbines.

Control device and control method for an aerodynamic brake

Es wird eine Steuerungsvorrichtung (1) für eine aerodynamische Bremse auf dem Rotorblatt einer Windturbine vorgestellt, die mehrere Komponenten aufweist, um eine möglichst unkomplizierte Möglichkeit bereitzustellen, die Rotation der Windturbine (14) verschleißfrei durch eine Bremse zu steuern, die sich in Defektsituationen ohne äußere Ansteuerung aktivieren und die Windturbine (14) zum stehen bringen kann. Dazu wird ein Massenelement (5) verwendet, um mechanische Energie zu speichern, welche dann wiederum zum aerodynamischen Bremsen umgesetzt werden kann.

СПОСОБ И УСТРОЙСТВО РЕГУЛИРОВКИ ДЛЯ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ, А ТАКЖЕ КОМПЬЮТЕРНЫЙ ПРОГРАММНЫЙ ПРОДУКТ, ЦИФРОВОЙ НОСИТЕЛЬ ДАННЫХ И ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

... 1. Способ для эксплуатации ветроэнергетической установки (1000), в котором, например, для случая технического обслуживания или для подобного случая остановки ветроэнергетической установки, обусловленной эксплуатационными требованиями, ротор (3) останавливают и фиксируют, включающий в себя этапыторможение ротора (3),позиционирование ротора (3) в положение останова,фиксация ротора (3) в положении (P1, Р2) останова, отличающийся тем, что:задают (S2) конечное положение,тормозят (S-I) ротор (3), настроенный на положение останова, согласованное с конечным положением, идля позиционирования (S-II) для заданного конечного положения ротор автоматически тормозят до останова в положении останова, идля фиксации (S-III) в положении останова механическое устройство фиксации блокируют, в частности, автоматически.2. Способ по п. 1, отличающийся тем, что при фиксации ротор (7.1) генератора фиксируют на статоре (7.2) генератора.3. Способ по п. 1 или 2, отличающийся тем, что при фиксации корпус (15) втулки ...

WIND-POWER PLANT

PROCEDURE FOR DEFROSTING A SHOVEL OF A WINDTURBINE, WINDTURBINE AND USE OF IT

METHOD AND REGULATING DEVICE FOR A WIND POWER INSTALLATION AND COMPUTER PROGRAM PRODUCT, DIGITAL STORAGE MEDIUM AND WIND POWER INSTALLATION

The invention relates to a method for operating a wind turbine (1000), in which method the rotor (3) is brought to a standstill and locked, having the steps: braking the rotor (3); positioning the rotor (3) in a standstill position; immobilizing the rotor (3) in the standstill position (P1, P2). It is provided according to the invention that a final position is predefined (S2), the rotor (3) is braked (S-I) in controlled fashion to a standstill position assigned to the final position, and for the positioning (S-II) for the predefined final position, the rotor is automatically braked until it comes to a standstill in the standstill position, and for the immobilization (S-III) in the standstill position, a mechanical immobilizing device is engaged, in particular automatically.

WIND TURBINE BLADE WITH LIFT-REGULATING MEANS IN FORM OF SLOTS OR HOLES

The blade (10) comprises adjustable lift-regulating means extending in the longitudinal direction of the blade (10), and activating means by means of which the lift-regulating means can be adjusted and thus alter the aerodynamic properties of the blade (10). The lift-regulating means are adapted and arranged so that by activation of the activating means, the lift can be reduced in a zone extending in the longitudinal direction of the blade (10) from a first position in proximity to the blade tip (14) to a second position between the first position and the root area (16) and this second position being variable in the longitudinal direction of the blade. The lift-regulating means are formed of at least one slot (12, 13, 15) or a number of holes (42, 43, 45, 52, 53, 55) arranged in at least one longitudinally extending zone, thereby allowing an interior cavity (22, 23, 25) of the blade (10) to communicate with the exterior. The lift-regulating means are adjustable by means of one or more activating means to regulate the amount of air emitted from the interior cavity (22, 23, 25) to the exterior to alter the aerodynamic properties of the blade (10).

DEVICE FOR ADJUSTING THE BLADE PITCH OF A WIND GENERATOR

The device is intended to adjust the pitch of blades or propellers which are articulately coupled by means of end supports inside radial bearings which are solidly joined to a rotating head-piece of a wind generator. This adjustment may be performed either actively or passively. It is characterised in that the rotating head-piece incorporates a linear actuator (1), such as a cylinder, the shaft of which is connected to a crosspiece (14), the latter being associated with intermediate mechanisms connected to the end supports (7) of the blades (6) so as to vary the pitch thereof when the crosspiece (14) moves, being driven by the shaft of the cylinder.

Wind generator`s blade for producing electricity, has main body and rotating flap that rotates with respect to main body around rotation axis parallel to trailing edge of blade

The blade has a main body (11) and a rotating flap (12) that rotates with respect to the main body around a rotation axis parallel to a trailing edge of the blade. The flap extends transversally between its rotation axis and the trailing edge. An electric motor has an output shaft whose end has an endless screw to be connected with a pinion connected to a trunnion. An independent claim is also included for an aerogenerator comprising blades.

CONTROL OF A WIND TURBINE ROTOR DURING A STOP PROCESS USING PITCH AND A SURFACE ALTERING DEVICE

A method for controlling a wind turbine during a stop process thereof from an operating state to a stand-still state, wherein the wind turbine comprises a tower and a rotor with a plurality of pitchable rotor blades, each blade comprising a main blade body and at least one trailing edge flap, which is movable with respect to the main blade body in order to alter the aerodynamic surface of the blade. In the operating state, the tower is deflected in a downwind direction due to the aerodynamic thrust force on the rotor, and the method for controlling the stop process comprises the steps of moving the at least one trailing edge flap towards the suction side of the blade in order to alleviate the aerodynamic load on the rotor, whereby the tower starts to move forward in the upwind direction, and subsequently pitching the blades to further alleviate the aerodynamic load on the rotor.

УСТРОЙСТВО РЕГУЛИРОВАНИЯ ШАГА ЛОПАСТЕЙ ВЕТРОГЕНЕРАТОРА

FIELD: engines and pumps. SUBSTANCE: device relates to wind power engineering. Blades 6 are pin-ended via end fasteners 7 in radial thrust bearings 5. These are fixed at spinning head 3 of windmill rotor. Head 3 comprises linear drive, for example, cylinder its rod being engaged with spider 14. Said spider 14 is coupled with idlers connected with end fasteners 7 of blades 6 to vary blade pitch at its displacement. Spider 14 is driven by cylinder rod. EFFECT: adjustment of windmill blade pitch subject to required parameters. 4 cl, 2 dwg

Windenergieanlage

Verfahren zum Verbringen eines Zweiblattrotors einer Windenergieanlage in eine Parkstellung, gekennzeichnet durch Ausrichten der Rotorblätter in einer horizontalen Ebene und Bremsen des Rotors.

Verfahren zum Abschalten einer Windkraftanlage, die Rotorblätter mit ausfallsicheren Luftbremsen aufweist

Ein Verfahren zum Abschalten einer Windkraftanlage, die ein oder mehrere Windkraftanlagenblätter aufweist, enthält ein Erfassen einer Betriebsbedingung der Windkraftanlage, die eine beschleunigte Abschaltung oder eine Notabschaltung der Windkraftanlage auf eine andere Weise als durch eine normale Abschaltung durch Anstellwinkelsteuerung erfordert. Bei Erfassung der Betriebsbedingung wird eine oder werden mehrere Luftbremsklappen, die an jedem der Windkraftanlagenblätter eingerichtet sind, durch Unterbrechung der Energieversorgung für einen Ausfallsicherungsaktuator, der mit jeder der Luftbremsklappen betriebsmäßig verbunden ist, ausgefahren. Der Ausfallsicherungsaktuator ist konfiguriert, um in einem energieversorgten Zustand des Ausfallsicherungsaktuators die jeweilige Luftbremsklappe in einer eingezogenen Stellung in Bezug auf eine Saugseite des Windkraftanlagenblattes zu halten und um bei Verlust bzw. Wegfall der Energieversorgung für den Ausfallsicherungsaktuator die Luftbremsklappe ...

AIR TURBINE OR PROPELLOR

Wind turbine blades

PCT No. PCT/GB85/00173 Sec. 371 Date Dec. 12, 1985 Sec. 102(e) Date Dec. 12, 1985 PCT Filed Apr. 23, 1985 PCT Pub. No. WO85/04930 PCT Pub. Date Nov. 7, 1985.Wind turbine blades for use e.g. in generating electricity are described in which the blades have fixed lift spoilers in the form of deep spars projecting on the normally high pressure side of the blades where they are relatively ineffective, but which, in down-wind operation of the turbine, are on the low pressure side which generates (but for the spars) substantially all the lift and are therefore very effective. Active spoilers are also disclosed on the low pressure side of the blade rapidly deployable to control an overspeed condition. The whole is controlled by a computer to maintain desirably constant tip speed ratio, the variable rotor speed being converted hydraulically or electrically to constant frequency current, or to maintain a constant turbine speed to generate constant frequency current with overspeed protection.

Vertical axis wind turbine auto blade pitching mechanism

Emergency pitch drive power supply for a wind turbine

An emergency pitch drive power supply is provided, the emergency pitch drive power supply comprising an auxiliary generator (400; 500) for producing electric power, wherein the auxiliary generator (400; 500) is a permanently excited multi-pole generator adapted to generate sufficient powder for a pitch drive (145) of a wind turbine (100) when driven with wind rotor speed, and wherein the auxiliary generator (400; 500) is connected to at least one pitch drive motor (145) of the wind turbine (100).

УСТРОЙСТВО РЕГУЛИРОВАНИЯ ШАГА ЛОПАСТЕЙ ВЕТРОГЕНЕРАТОРА

1. Устройство регулирования шага лопастей ветрогенератора, предназначенное для регулирования шага лопастей или пропеллеров, шарнирно закрепленных посредством концевых крепежных частей в радиально-упорных подшипниках, неподвижно установленных на вращающейся головке ротора ветрогенератора, отличающееся тем, что головка включает линейный приводной механизм (1), такой как цилиндр, шток которого соединен с крестовиной (14), связанной с промежуточными механизмами, присоединенными к концевым крепежным частям (7) лопастей (6) для изменения их шага при перемещении крестовины (14), приводимой в движение штоком цилиндра (1). ! 2. Устройство по п.1, отличающееся тем, что цилиндр (1) расположен внутри цилиндрического корпуса (2) вращающейся головки (3), пружины (13) и направляемого кольца (12), образующего часть крестовины (14), выступающего наружу от конца цилиндрического корпуса (2) и охватывающего упомянутый цилиндрический корпус (2). ! 3. Устройство по п.2, отличающееся тем, что крестовина (14) соединена с каждой из концевых крепежных частей (7) посредством соединительной тяги (9), шарнирно соединенной одним концом с рычагом (8), неподвижно прикрепленным к соответствующей концевой крепежной части (7), а противоположным концом шарнирно соединенной с коротким валом (10), прикрепленным к частям (11), неподвижно прикрепленным к кольцу (12). ! 4. Устройство по любому из предшествующих пунктов, отличающееся тем, что концевые крепежные части (7) лопастей (б) включают противовесы (15), которые могут изменять шаг лопастей (6) во время вращения головки (3) ротора. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 116 126 (13) A (51) МПК F03D 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011116126/06, 15.09.2009 (71) Заявитель(и): СОНКИО ЭНЕРДЖИ, С.Л. (ES) Приоритет(ы): (30) Конвенционный приоритет: 25.09.2008 ES U200801941 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 25.04.2011 (87) Публикация заявки РСТ: WO ...

Wind turbine direction control

A METHOD FOR DE-ICING A BLADE OF A WIND TURBINE, A WIND TURBINE AND USE THEREOF

The invention relates to a method for de-icing a blade (5) of a wind turbine (1), after the wind turbine (1) has been idle for a period of time. The method comprises the steps of .cndot. creating a controlled acceleration condition of the blade (5), and .cndot. subsequently creating a controlled deceleration condition of the blade (5), whereby ice is shaken of the blade (5). The in-vention further relates to a wind turbine (1) comprising a rotor including at least one blade (5), and de-icing means for de-icing the blade (5) wherein the de- icing means comprises actuating means (19) of the wind turbine (1) and wherein the de-icing means further includes control means for performing a method according to any of claims 1 to 11. Furthermore, the invention relates to use of a wind turbine.

DEVICE FOR ADJUSTING THE BLADE PITCH OF A WIND GENERATOR

The device is intended to adjust the pitch of blades or propellers which are articulately coupled by means of end supports inside radial bearings which are solidly joined to a rotating head-piece of a wind generator. This adjustment may be performed either actively or passively. It is characterised in that the rotating head-piece incorporates a linear actuator (1), such as a cylinder, the shaft of which is connected to a crosspiece (14), the latter being associated with intermediate mechanisms connected to the end supports (7) of the blades (6) so as to vary the pitch thereof when the crosspiece (14) moves, being driven by the shaft of the cylinder.

Method and apparatus for wind turbine braking

BLADE Of AEROGENERATOR EQUIPEE OF AVERAGE DEFLECTORS, AND CORRESPONDING AEROGENERATOR

WIND MILL HAS REGULATION Of ALTITUDE ACCORDING TO the AERODYNAMIC LOADS.

La présente invention concerne une éolienne à régulation d'altitude selon les forces aérodynamiques, pour permettre notamment la régulation de la puissance captée par l'éolienne. L'invention concerne des moyens de déplacement comportant un levier équipé d'un contrepoids et relié par un moyen de raccordement à un bras porteur inclinable de l'éolienne de façon à rappeler le bras porteur vers le haut. Les moyens de déplacement déplacent le moyen de raccordement et le contrepoids sur le levier de façon à rappeler le bras porteur vers le haut de manière croissante lorsque le bras porteur s'abaisse.

Device for adjustment of rotor blades of the rotor in a wind power system

Device for adjusting rotor blades of rotor of wind power installation, has two systems for each blade to provide angular adjustment Between the blade (6) and the rotor hub a tubular section (8) is fitted. At the upper end the section is linked to the blade by a roller bearing (18) the inner ring (19) of which engages with a motor (21) driven pinion (20). This arrangement is duplicated and the motors are controlled to adjust the blade angle in unison. The power for operating the motors can be electrical, hydraulic or mechanical ( using the rotational energy of the rotor.

VERTICAL AXIS WINDMILL

A vertical axis windmill is provided with a plurality of blades arranged at equidistant angular intervals with the vertical axis of rotation as the center in a plane perpendicular to a vertical axis of rotation, wherein the blade has a streamlined airfoil having a lift coefficient of 1.0 or more, comprising: an opening/closing member of which the front-end part is pivotally supported by the back side of the blade; and of which the rear-end part opens/closes with respect to the blade, and opening/closing control means for controlling the opening/closing action of the opening/closing member in response to the ratio of the rotational speed of the blade to a wind speed.

Device for adjusting the blade pitch of a wind generator

一种用于借助于位于径向轴承内的端部支撑件来调节以铰接方式联接的叶片或推进器的间距的装置，所述径向轴承被牢固地接合到风力发电机的转动头部件上。所述调节可以为主动调节或被动调节。其特征在于，转动头部件包括线性驱动器(1)，如缸体，线性驱动器的轴杆与交叉件(14)相连接，所述交叉件关联到与叶片(6)的端部支撑件(7)相连接的中间机械装置上，从而当交叉件(14)被移动时，由缸体(1)的轴驱动端以改变此处的间距。

Process of limitation of the engine torque of the wind wheels and wind wheel by comprising application

WIND MILL

VERTICAL-AXIS WIND ROTOR

METHOD AND CONTROL DEVICE FOR A WIND TURBINE, AND COMPUTER PROGRAM PRODUCT, DIGITAL STORAGE MEDIUM AND WIND TURBINE

1 / 1 resumo “mã‰todo para operar uma instalaã‡ãƒo de energia eã“lica, dispositivo de regulagem para uma instalaã‡ãƒo de energia eã“lica, produto de programa de computador, e, instalaã‡ãƒo de energia eã“lica” a invenã§ã£o refere-se a um mã©todo para operar uma instalaã§ã£o de energia eã³lica (1000), em cujo mã©todo o rotor (3) ã© levado a uma parada e fixado, compreendendo as etapas: frear o rotor (3), posicionar o rotor (3) em uma posiã§ã£o parada, e fixar o rotor (3) na posiã§ã£o parada (p1, p2). de acordo com a invenã§ã£o ã© provido que uma posiã§ã£o final ã© predeterminada (s2), o rotor (3) ã© freado (s-i) de maneira regulada para uma posiã§ã£o parada associada com a posiã§ã£o final, e para posicionar (s-ii) para a posiã§ã£o final predeterminada o rotor ã© freado em um procedimento automatizado atã© ser parado na posiã§ã£o parada, e para fixar (s-iii) na posiã§ã£o parada um dispositivo de fixaã§ã£o mecã¢nica ã© aplicado, em particular automaticamente.

Energy recovery system for moving vehicle

A system to recover energy from the air stream associated with a moving vehicle has a turbine disposed within the air stream and operatively connected through a drive shaft to an electrical generator. The turbine has a plurality of vanes characterized by a pitch angle which is controllable so that when braking or decelerating the vanes are pitched at an angle to the air stream to assist in slowing the vehicle by increasing the drag of the wind on the vehicle and in generating electricity through the rotation of the turbine. A controller determines the pitch of the vanes based on the operating conditions of the vehicle and the actions of the user. The electrical generator may be provided with a plurality of rotors, each with its associated electrical coil. Each rotor is operatively connected to the drive shaft from the turbine by means of a releasable pin. One or any number of rotors up to the full complement may be selected to be connected to the drive shaft at any time. Rotors that are ...

CENTRIFUGALLY DRIVEN AERODYNAMIC ROTOR BLADE BRAKE ASSEMBLY

An aerodynamic brake assembly for use with an airfoil such as the blade of a wind turbine rotor comprises deployable upper and/or lower spoiler plates incorporated in or attached to the airfoil. The spoiler plates can deploy under the influence of centrifugal forces when the rotating airfoil or rotor blade reaches a pre-determined rotational speed. The aerodynamic brake assembly may be integrated within the airfoil or attached to the tip of the airfoil such that, when not deployed, the upper and lower spoiler plates have a profile that approximately conforms to the profile of the part of the airfoil to which it the brake assembly is attached. Thus in a non-deployed state, the spoiler plates have a non-detrimental effect on the performance of the airfoil, and may even contribute to its aerodynamic lift properties. A weighted arm linked to the spoiler plate mechanism can be held in position electromagnetically or by solenoid, until an electrical signal from a controller causes it to release ...

WINDPOWERPLANT

Air turbine or propeller blade

A turbine or propellor blade 1 has brake means to avoid overspeed in high wind conditions. The brake means comprise 9 disposed within the blade to interconnect a first opening 11 and a second opening 10 in the blade, and further comprise valve means 13 for controlling fluid flow through the passage 9, in which a pressure differential between the first and the second openings as a result of rotation of the rotor can effect fluid flow. The first opening 11 may be radially inward of the second 10 or may be disposed in the nose cone 3 of the rotor, or on the high-pressure side of an aerofoil cross-section of the blade, the second opening 10 then being on the low pressure side. A further inlet may be provided by a tube 12. ...

Improvements relating to governers for wind driven propellers

... 532,668. Wind motors. ALBERS, J. R.. and ALBERS, G. H. June 28, 1939, No. 18770. [Class 110 (iii)] A wind-motor with screw propeller blades 10 is provided with wind-brake surfaces 21 that normally lie in the circle of their rotation, but, at high speeds, are moved by centrifugal force into positions such as 35, 37. The surfaces 21 are pivoted, away from their centres of gravity, to an arm 16 fast on the propeller boss and a.re linked by rods 26 to a. pivoted lever 22. Springs 31 oppose the action of centrifugal force.

VERTICAL WIND ELECTRICITY GENERATION SYSTEM

Method and control device for a wind turbine, and computer program product, digital storage medium and wind turbine

WIND TURBINE, BOOKLET FOR A WIND TURBINE, SEGMENT FOR A BOOKLET FOR A WIND TURBINE, WORKING METHOD FOR MANUFACTURING AND COMPOSING A WIND TURBINE.

WIND TURBINE BLADES

Wind turbine blades for use e.g. in generating electricity in which the blades have fixed lift spoilers (15) in the form of deep spars projecting on the normally high pressure side (12) of the blades where they are relatively ineffective, but which, in down-wind operation of the turbine, are on the low pressure side (13) which generates (but for the spars) substantially all the lift and are therefore very effective. Active spoilers are also disclosed on the low pressure side of the blade rapidly deployable to control an overspeed condition. The whole is controlled by a computer to maintain desirably constant tip speed ratio, the variable rotor speed being converted hydraulically or electrically to constant frequency current, or to maintain a constant turbine speed to generate constant frequency current with overspeed protection.

Vertical axis wind turbine with control system and method of aerodynamic braking

WIND TURBINE BLADES

Wind turbine direction control

A METHOD FOR DE-ICING A BLADE OF A WIND TURBINE, A WIND TURBINE AND USE THEREOF

The invention relates to a method for de-icing a blade (5) of a wind turbine (1), after the wind turbine (1) has been idle for a period of time. The method comprises the steps of .cndot. creating a controlled acceleration condition of the blade (5), and .cndot. subsequently creating a controlled deceleration condition of the blade (5), whereby ice is shaken of the blade (5). The in-vention further relates to a wind turbine (1) comprising a rotor including at least one blade (5), and de-icing means for de-icing the blade (5) wherein the de- icing means comprises actuating means (19) of the wind turbine (1) and wherein the de-icing means further includes control means for performing a method according to any of claims 1 to 11. Furthermore, the invention relates to use of a wind turbine.

CENTRIFUGALLY DRIVEN AERODYNAMIC ROTOR BLADE BRAKE ASSEMBLY

An aerodynamic brake assembly for use with an airfoil such as the blade of a wind turbine rotor comprises deploy-able upper and/or lower spoiler plates incorporated in or attached to the airfoil. The spoiler plates can deploy under the influence of centrifugal forces when the rotating airfoil or rotor blade reaches a pre-determined rotational speed. The aerodynamic brake assembly may be integrated within the airfoil or attached to the tip of the airfoil such that, when not deployed, the upper and lower spoiler plates have a profile that approximately conforms to the profile of the part of the airfoil to which it the brake assembly is attached. Thus in a non-deployed state, the spoiler plates have a non-detrimental effect on the performance of the airfoil, and may even contribute to its aerodynamic lift properties. A weighted arm linked to the spoiler plate mechanism can be held in position electromagnetically or by solenoid, until an electrical signal from a controller causes it to release, leading to deployment of the spoiler plates. Failsafe deployment of the spoiler plates can occur either upon loss of power to the mechanism, or when the cen-trifugal force associated with an overspeed condition of the rotor overcomes the holding force of the electromagnet or solenoid.

CENTRIFUGALLY DRIVEN AERODYNAMIC ROTOR BLADE BRAKE ASSEMBLY

An aerodynamic brake assembly for use with an airfoil such as the blade of a wind turbine rotor comprises deploy-able upper and/or lower spoiler plates incorporated in or attached to the airfoil. The spoiler plates can deploy under the influence of centrifugal forces when the rotating airfoil or rotor blade reaches a pre-determined rotational speed. The aerodynamic brake assembly may be integrated within the airfoil or attached to the tip of the airfoil such that, when not deployed, the upper and lower spoiler plates have a profile that approximately conforms to the profile of the part of the airfoil to which it the brake assembly is attached. Thus in a non-deployed state, the spoiler plates have a non-detrimental effect on the performance of the airfoil, and may even contribute to its aerodynamic lift properties. A weighted arm linked to the spoiler plate mechanism can be held in position electromagnetically or by solenoid, until an electrical signal from a controller causes it to release ...

Emergency pitch drive power supply

An emergency pitch drive power supply is provided, the emergency pitch drive power supply comprising an auxiliary generator(400;500) for producing electric power, wherein the auxiliary generator is a permanently excited multi-pole generator adapted to generate sufficient power for a pitch drive of a wind turbine (100)when driven with wind rotor speed, and wherein the auxiliary generator(400;500) is connected to at least one pitch drive motor(145) of the wind turbine(100).

Device for adjusting the blade pitch of a wind generator

Wind engine at high speed

DRIVE MECHANISM FOR ADJUSTING THE ROTOR BLADES OF WIND POWER INSTALLATIONS

A device for adjusting rotor blades (1) which are mounted on a rotor hub of a wind power installation in such a way that they can rotate has a drive mechanism (12) for turning said rotor blades. The adjustment of the rotor blades can also be used as a braking system, the rotor blades (1) being turned in the direction of the feathering pitch so that the wind power installation loses power or speed, in order to shut down the installation. A reverse blocking mechanism (19) is connected to the rotor blades (1) to ensure that the speed of the installation can be reduced even if the power supply fails. Said reverse blocking mechanism (19) can be activated to prevent the rotor blades (1) from turning back from the feathering pitch to the operating position. The blocking mechanism (19) is deactivated during normal operation and is activated automatically if the power supply fails. The rotor blades (1) are then only able to rotate into the feathering pitch and are maintained there until the installation ...

Energy output limiter for wind turbine rotor(s)

Vertical axis wind turbine incorporating auto blade pitching mechanism

Energy output limiter for wind turbine rotor(s)

Emergency pitch drive power supply

An emergency pitch drive power supply is provided, the emergency pitch drive power supply comprising an auxiliary generator for producing electric power, wherein the auxiliary generator is a permanently excited multi-pole generator adapted to generate sufficient power for a pitch drive of a wind turbine when driven with wind rotor speed, and wherein the auxiliary generator is connected to at least one pitch drive motor of the wind turbine.

Windkraftsystem mit Heizvorrichtung

Windkraftsystem mit Heizvorrichtung, umfassend: mindestens ein Rotorblattsegment (6) mit einer Anströmkante (16); mindestens eine Energie-Umwandlervorrichtung, die mechanische Rotationsenergie des Windkraftsystems umwandelt; und eine Heizvorrichtung, die Wärmeenergie von der mindestens einen Energie-Umwandlervorrichtung abführt und direkt in den Innenraum des mindestens einen Rotorblattsegments leitet, wobei die Heizvorrichtung die Wärmeenergie nur an einem vorderen Innenraumbereich (24) der Anströmkante (16) entlang leitet, um einer Eisbildung auf der Anströmkante (16) entgegenzuwirken. Wind power system with heating device, comprising: at least one rotor blade segment (6) with a leading edge (16); at least one energy converter device that converts mechanical rotational energy of the wind power system; and a heater that dissipates heat energy from the at least one energy converter device and conducts directly into the interior of the at least one rotor blade segment, wherein the heater directs the heat energy only at a front interior region (24) of the leading edge (16) along to an ice formation on the Counteract leading edge (16).

Vertical Axis Wind Turbine with non-newtonian fluid damped auto pitching and air brake

A vertical axis wind turbine having a single vertical structure 4 drives a generator 14 within the structure via a structure encircling ring and planet gear arrangement. A blade hub 1 mounted automatic blade pitch control mechanism allows aerodynamic blade pitch alteration relative to the airstream. Blade 2 motion is damped and controlled by a non-Newtonian fluid within the hub 1 that controls the blade pitching motion from excessive and violent movement as the blade 2 is rotating around the vertical axis. The fluid passes via a narrow channel between alternately expanding and contracting chambers in the hub. Speed control and stopping is controlled by an actuating mechanism comprising a structure encircling annular ring 31 driven by hydraulic or electric motor driven actuators 21 that move the ring vertically to engage wheels and a linkage connected to flaps 11 to raise the flaps and apply air braking to the wind turbine.

Vertical shaft windmill

Vertical shaft windmill

A vertical shaft windmill in which blades are installed in a plane orthogonal to the vertical rotary shaft and at same angular intervals around the vertical rotary shaft. The blade is formed in a streamline airfoil having a lift coefficient of 1.0 or higher. The blade comprises an opening/closing member the front end of which is pivotally supported on the rear surface of the blade and the rear end of which is opened and closed relative to the blade and an control means for controlling the opening and closing operations of the opening/closing member according to the ratio of the rotational speed of the blade to a wind velocity.

Method and control device for a wind turbine, and computer program product, digital storage medium and wind turbine

The invention relates to a method for operating a wind turbine (1000), in which method the rotor (3) is brought to a standstill and locked, having the steps: braking the rotor (3); positioning the rotor (3) in a standstill position; immobilizing the rotor (3) in the standstill position (P1, P2). It is provided according to the invention that a final position is predefined (S2), the rotor (3) is braked (S-I) in controlled fashion to a standstill position assigned to the final position, and for the positioning (S-II) for the predefined final position, the rotor is automatically braked until it comes to a standstill in the standstill position, and for the immobilization (S-III) in the standstill position, a mechanical immobilizing device is engaged, in particular automatically.

WIND TURBINE BLADES

Device for adjusting the blade pitch of a wind generator

The device is intended to adjust the pitch of blades or propellers which are articulately coupled by means of end supports inside radial bearings which are solidly joined to a rotating head-piece of a wind generator. This adjustment may be performed either actively or passively. It is characterized in that the rotating head-piece incorporates a linear actuator (1), such as a cylinder, the shaft of which is connected to a crosspiece (14), the latter being associated with intermediate mechanisms connected to the end supports (7) of the blades (6) so as to vary the pitch thereof when the crosspiece (14) moves, being driven by the shaft of the cylinder.

WIND ENERGY INSTALLATION AND A METHOD OF OPERATING A WIND ENERGY INSTALLATION

A method of operating a wind energy installation wherein a rotor has a first rotor blade which can be angularly adjusted, a first adjustment drive for adjusting the rotor blade, and a safety control system. In a normal mode of operation, the first adjustment drive is supplied with energy from a source and is controlled by a first pitch control system. In a failure mode of operation, the supply of energy to the first adjustment drive is switched from the source to an energy storage device and the safety control system monitors a position and/or movement of the first rotor blade. The first rotor blade is adjusted by the first adjustment drive in a direction of a predetermined stopping position, while the safety control system, as a function of the monitored position and/or movement, enables or effects a deactivation of a first power supply shut-off device. In the failure mode of operation, the safety control system, as a function of the monitored position and/or movement, closes a first pitch brake and activates a first blocking mode in which the supply of energy to the first adjustment drive from the energy storage device and/or an opening of the first pitch brake is prevented. 112-. (canceled)13. A method of operating a wind energy installation including a rotor with a first rotor blade that can be adjusted in terms of its angle , a first adjustment drive for adjusting the first rotor blade , and a safety control device/system , the method comprising:in a normal mode of operation, supplying the first adjustment drive with energy from an energy source and controlling the first adjustment drive with a first pitch control device/system; switching the supply of energy to the first adjustment drive from the energy source over to a first energy storage device if switching the supply of energy has not already occurred, and', 'monitoring at least one of a position or a movement of the first rotor blade with the safety control device/system; and, 'in a failure mode of ...

Horizontal axis wind turbine apparatus

The object of the invention is to provide a control apparatus (C) of a horizontal axis wind turbine apparatus (WTG) that calculates the value en of a pitch angle command for each blade based on the rate of change (ΨD) of the azimuth angle (Ψ) of a nacelle (N) and the rotor azimuth angle (φ) of the blades (B1, B2 and B3), causes the rotor (R) to generate torque around the yaw axis by periodically controlling the angle change of the pitch angle of the blades (B1, B2, B3), and using that torque, controls the rate of change of the azimuth angle of the nacelle (N). The value of that angle change is calculated as a value that increases as the input value of the rate of change (ΨD) increases.

Schnell laufender Windmotor

부체식 풍력 발전 장치의 제어 방법 및 제어 장치, 그리고 부체식 풍력 발전 장치

... 부체 상에 풍력 발전기가 세워 설치된 부체식 풍력 발전 장치의 제어 방법은, 상기 풍력 발전기의 정지시에, 상기 풍력 발전기의 로터에 공력적 제동력이 부여되도록 상기 풍력 발전기의 블레이드의 피치각을 증대시키는 피치각 증대 스텝을 구비한다. 상기 피치각 증대 스텝에서는, 상기 부체의 동요에 의해 상기 풍력 발전기가 연직 방향보다 풍상측으로 경사지는 동작 중의 제 1 기간에 있어서의 상기 블레이드의 상기 피치각의 제 1 변화율을, 상기 부체의 동요에 의해 상기 풍력 발전기가 연직 방향보다 풍하측으로 경사지는 동작 중의 제 2 기간에 있어서의 상기 블레이드의 상기 피치각의 제 2 변화율보다 작게 한다.

VARIABLE WIND POWER GENERATOR OF WHICH CROSS-SECTIONAL AREA OF WING IS CHANGED

The present invention relates to a wind power generator, having a variable rotor (wing). More specifically, the present invention has the multi-layer rotor (wing) increasing a cross-sectional area of the wing to be equal to or larger than 90% of the overall cross-sectional area when the wind speed is equal to or less than 3 m/sec and has the variable wing reducing the cross-sectional area of the rotor (wing) to be equal to or less than 5% when the wind speed is equal to or less than 25 m/sec. The present invention relates to the wind power generator, having a wing conversion device preventing damage to devices such as the wing and a transmission. COPYRIGHT KIPO 2016 ...

Method for shut down of a wind turbine having rotor blades with fail-safe air brakes

A method for shutdown of a wind turbine having one or more wind turbine blades includes detecting an operational condition of the wind turbine that calls for an expedited or emergency shutdown of the wind turbine by means other than normal pitch control shutdown. Upon detection of the operational condition, one or more air brake flaps configured on each of the turbine blades is deployed by removing power to a fail-safe actuator operatively coupled to each of the air brake flaps. The fail-safe actuator is configured to hold the respective air brake flap at a retracted position relative to a suction side of the turbine blade in a powered state of the fail-safe actuator and to release the air brake flap for automatic deployment to an open position upon loss of power to the fail-safe actuator.

Vertical-axis wind rotor

A vertical-axis wind rotor configured by concave-convex type airfoil profiles in the form of vertical helical protrusions, tilted towards counter-rotation and twisted around, the chord decreasing, where both ends are finished in the form of sharklets rotated towards the upper surface so as to eliminate the vortex, and distributed in a circular pattern around the rotation shaft thereof. The angular arrangement of the chord of the section of the profile with a spoke with respect to the shaft of the rotor is particular for making the profile work under lift conditions before reaching the normal under drag forces and complementing them, eliminating jerking, with the direction of rotation being indicated by the Coriolis effect and determining the radial distribution, the radius, the chord, the profile, and the number of them, which confers to the rotor the maximum terminal velocity at which it slows down, being maintained by the Magnus effect. 1. Vertical-axis wind rotor , configured with a series of airfoil profiles with a concave lower surface and a convex upper surface , defining a chord between the ends of each lower surface , connected to a rotational energy extraction rotating shaft , each airfoil profile having an upper end and a lower end , and wherein:the chord of the lower surface of the airfoil profiles decreases in the upward direction along the airfoil profile;the distance from the airfoil profile to the shaft increases in the upward direction along the airfoil profile;the airfoil profiles have a positioning angle of the section which increases in the upward direction along the airfoil profile,the airfoil profiles are arranged in the form of a helicoidal pattern with the upper part tilted towards counter-rotation; andthe airfoil profiles are arranged with the leading edges outwardly from the rotor and with the upper surface arranged inwardly therefrom.2. Vertical-axis wind rotor according to claim 1 , wherein at least one of the upper and lower tips is ...

MULTI-FUNCTIONAL FLAP USED AS A BACK-FLOW FLAP

The invention relates to a device of a safety system and/or resource and energy-efficiency improvement system for influencing the flow around an aero- or hydrodynamic body, preferably an aerofoil, according to the principle of a back-flow flap, characterized in that: said device, together with the aero- or hydrodynamic body, in particular aerofoil, form at least a partial shift of the delimitation of the flap region by means of the back-flow flap and the delimiting component thereof when the back-flow flap is partially and/or completely raised, thus influencing the trailing edge separation vortex/vortices and/or the flap separation vortex/vortices; and in that the delimitation of the flap region shifts completely up to or beyond the profile trailing edge, or shifts only to a section in front of the profile trailing edge. The delimitation component is movably connected to the aerofoil by means of a basic element and is preferably permanently secured and/or releasably secured for maintenance purposes, thus ensuring a long service life for the rotor blade and/or wind turbine and/or flap system, preferably >5 years, particularly preferably >10 years, and most particularly preferably >=20 years, and/or thus optionally allowing simple removal/replacement. 175-. (canceled)76. A device in the form of a wind turbine rotor blade comprising a passive or active flap system for improving the output ,comprising a base element which reinforces the rotor blade, andat least one flap attached thereto,wherein the base element comprises a support face on the rotor blade, andwherein the flap is attached to the base element so as to be movable and is formed as a passive back-flow flap.77. The device according to claim 76 , wherein the movable attachment of the flap to the base element is formed using a joint made of resilient material claim 76 , in particular in the form of film claim 76 , textiles claim 76 , in particular textiles comprising glass fibres or aramid fibres claim 76 , one ...

Improvements relating to wind turbines having blades equipped with boundary layer control system

A wind turbine system comprising a nacelle mounted on a tower, a rotor having a plurality of blades and a boundary layer control system configured to control airflow through blade surface openings in each of the blades. The wind turbine system includes a control system configured to perform at least one of the following: to monitor an operational speed parameter of the wind turbine, and to activate the boundary layer control system if it is determined that the 1 operational speed parameter exceeds a predetermined speed parameter threshold; to monitor tower motion and to activate the boundary layer control system based on a determination of excessive tower motion; to monitor for a wind turbine shutdown condition, and to activate the boundary layer control system if it is determined that a wind turbine shutdown condition has been identified; and to monitor the aerodynamic loads on the blades, and to activate the boundary layer control system also based on a determination of excessive blade loads. The system thereby provides an approach to activating and deactivating the boundary layer control system to reduce operational risk to the wind turbine.

A method for de-icing a blade of a wind turbine, a wind turbine and use thereof

The invention relates to a method for de-icing a blade (5) of a wind turbine (1), after the wind turbine (1) has been idle for a period of time. The method comprises the steps of • creating a controlled acceleration condition of the blade (5), and • subsequently creating a controlled deceleration condition of the blade (5), whereby ice is shaken of the blade (5). The invention further relates to a wind turbine (1) comprising a rotor including at least one blade (5), and de-icing means for de-icing the blade (5) wherein the de- icing means comprises actuating means (19) of the wind turbine (1) and wherein the de-icing means further includes control means for performing a method according to any of claims 1 to 11. Furthermore, the invention relates to use of a wind turbine.

Method and apparatus for wind turbine braking

A method for braking a wind turbine (10) including at least one rotor blade (24) coupled to a rotor (18). The method includes selectively controlling an angle of pitch of the at least one rotor blade with respect to a wind direction based on a design parameter of a component of the wind turbine to facilitate reducing a force induced into the wind turbine component as a result of braking.

Wind powered system for generating electricity

A fixed pitch wind turbine rotor (18) is teeter mounted (76, 78, 80) onto a low speed input shaft (44) which is connected to the input (58) of a step-up transmission (46). The output (48) of the transmission (46) is connected to a rotary pole amplitude modulated induction machine (42) which is operable as a generator at a plurality of discreet speeds of rotation and is also operable as a startup motor for the rotor. A switch (45) responsive to the rotational speed of the wind turbine rotor switches the generator from one speed of operation to the other. The rotor hub (72) and the inner body portions (71) of two blades (68, 70), which extend radially outwardly in opposite directions from the hub (72), are constructed from steel. The outer end portions (73) of the blade (68, 70) are constructed from a lighter material, such as wood, and are both thinner and narrower than the remainder of the rotor. The outer end section (73) of each blade (68, 70) includes a main body portion and a trailing edge portion (104) which is hinge-connected to the main body portion. Each blade (68, 70) includes a centrifugal force operated positioning means (98, 100) which normally holds the drag brake section (104) in a retracted position, but operates in response to a predetermined magnitude of centrifugal force to move the drag brake (104) section into its deployed position. Each blade has an airfoil cross section and each blade (68, 70) has a plus twist inner portion adjacent the hub (72) changing to first a zero twist and then a minus twist as it extends radially outwardly from the hub (72).

Method for De-Icing A Blade Of A Wind Turbine, A Wind Turbine And Use Thereof

A method for de-icing a blade of a wind turbine after the wind turbine has been idle for a period of time. The method includes the steps of creating a controlled acceleration condition of the blade, and subsequently creating a controlled deceleration condition of the blade, whereby ice is shaken off the blade. A wind turbine including a rotor including at least one blade, and de-icing means for de-icing the blade wherein the de-icing means includes actuating means of the wind turbine and wherein the de-icing means further includes control means for performing a method according to any of claims 1 to 11 is also contemplated. Furthermore, the invention relates to use of a wind turbine.

Method for de-icing a blade of a wind turbine, a wind turbine and use thereof

A method for de-icing a blade of a wind turbine after the wind turbine has been idle for a period of time. The method includes the steps of creating a controlled acceleration condition of the blade, and subsequently creating a controlled deceleration condition of the blade, whereby ice is shaken off the blade. A wind turbine including a rotor including at least one blade, and deicing means for de-icing the blade wherein the de-icing means includes actuating means of the wind turbine and wherein the de-icing means further includes control means for performing a method for de-icing a blade. Furthermore, the invention relates to use of a wind turbine.

Wind turbine

Die Erfindung betrifft eine Windkraftanlage, insbesondere Horizontalachs-Windkraftanlage, mit einem um eine vorzugsweise etwa horizontal verlaufende Rotorachse drehbaren und mindestens einen sich quer, vorzugsweise etwa senkrecht zur Rotorachse erstreckenden Rotorblatt aufweisenden Rotor, einer Verstelleinrichtung zum Verstellen des mindestens einen, vorzugsweise jedes Rotorblattes, wobei durch das Verstellen das bei Windlast bezüglich der Rotorachse erzeugte Drehmoment veränderbar ist, und einer Stabilisierungsanordnung, mit der der Rotor in mindestens einer vorgegebenen, insbesondere lastarmen Drehstellung (Parkposition) stabilisierbar ist, wobei die Stabilisierungsanordnung eine an die Verstelleinrichtung koppelbare Kopplungs- insbesondere Regeleinrichtung aufweist, mit der bei einer Abweichung von der vorgegebenen Drehstellung, insbesondere bei einer Drehbewegung des Rotors aus der vorgegebenen Drehstellung eine Verstellung des mindestens einen Rotorblattes zur Erzeugung eines dieser Abweichung bzw. Drehbewegung entgegenwirkenden Drehmomentes veranlaßt werden kann. The invention relates to a wind power plant, in particular a horizontal-axis wind power plant, having a rotor which can be rotated about a preferably approximately horizontal rotor axis and has at least one rotor blade which extends transversely, preferably approximately perpendicularly to the rotor axis, an adjusting device for adjusting the at least one, preferably each, rotor blade, wherein by adjusting the torque generated with respect to the rotor axis in the case of wind load, and a stabilizing arrangement with which the rotor can be stabilized in at least one predetermined, in particular low-load rotational position (parking position), the stabilizing arrangement having a coupling device, in particular a regulating device, which can be coupled to the adjusting device, with which, in the event of a deviation from the predetermined rotational position, in particular when the rotor rotates from ...

Wind turbine blade with lift-regulating means in form of slots or holes

A blade for a wind turbine rotor with a hub is described. The object of the invention is to provide a wind turbine blade of the modern, aerodynamic type with improved regulating properties to enhance the adjustment of the wind turbine to various wind conditions, and where no mechanical parts are needed near the tip area. At least one slot or a number of holes arranged in at least one longitudinally extending zone, thereby allowing an interior cavity of the blade to communicate with the exterior. The amount of air emitted from the interior cavity to the exterior is also regulated to alter the aerodynamic properties of the blade.

Wind turbine rotor speed control system

A wind turbine rotor speed control for ensuring a constant rotational speed within tight tolerances includes a self-sufficient rotor (16) incorporating aerodynamic and mechanical devices to provide the control. There is a fixed turbine blade (26) adapted to be mounted on a shaft (14) for rotation therewith, the fixed blade (26) having pivotal blade tips (28) at its respective ends. The pitch control of the blade tips regulates the rotor speed. Aerodynamic tabs (180) are pivotally secured adjacent each of the ends of the respective trailing edges (34, 36) of the fixed blade. The relative wind acts on each tab which is connected to a series of links (188-168) and pitch cams (86) to regulate the pitch of the blade tips from a feathered position (210), to a cut-in position (212), to a rated wind position, and vice-versa. There are torque cams (60) actuated by torsional strain on the shaft bearing which is connected to the shaft (14) and to the pitch cams (86) by a series of links ( 52, 54) so that as the wind approaches its rated velocity value the pitch cams (86) become ineffective (228) and the torque cams (60) take over the speed control. There are also overspeed centrifugal devices (80) connected to the pitch cams (86) to cause the blade tips (28) to feather in emergency overspeed conditions so as to stop the rotor (16).

Adjusting pitch of wind turbine blades in emergency situation.

Wind turbine and a method for powering one or more hydraulic pitch actuators

A wind turbine for producing power to a utility grid includes a rotor having one or more blades, wherein the rotor further includes one or more hydraulic pitch actuators for actively controlling the pitch angle of one or more of the blades. The wind turbine also includes one or more actuator hydraulic pumps adapted for powering the hydraulic pitch actuators, wherein the one or more actuator hydraulic pumps are powered by a normal operation energy source. The wind turbine further includes an emergency hydraulic pump also adapted for powering the hydraulic actuators, the emergency hydraulic pump being powered by an electrical energy storage. A method for powering one or more hydraulic pitch actuators for actively controlling the pitch angle of one or more blades of a wind turbine is also disclosed.

Method and control device for a wind turbine, and computer program product, digital storage medium and wind turbine

본 발명은 로터(3)가 정지되어 록킹되는 풍력 발전 설비(1000)의 작동을 위한 방법에 관한 것으로, 로터(3)를 제동하는 단계; 로터(3)를 정지 위치로 위치 설정하는 단계; 정지 위치(P1, P2)에서 로터(3)를 고정하는 단계를 포함한다. 본 발명에 따라 최종 위치가 미리 정해지고(S2), 로터(3)는 조절되어 최종 위치에 할당된 정지 위치로 제동되고(S-1), 미리 정해진 최종 위치에 위치 설정을 위해(S-Ⅱ) 로터는 정지 위치에서 정지할 때까지 자동으로 제동되고, 정지 위치에서 고정을 위해(S-Ⅲ) 기계적 고정 장치가 특히 자동으로 체결된다. The present invention relates to a method for operation of a wind turbine plant (1000) in which a rotor (3) is stopped and locked, comprising the steps of: braking a rotor (3); Positioning the rotor (3) to a rest position; And fixing the rotor (3) at the stop positions (P1, P2). According to the present invention, the final position is predetermined (S2) and the rotor 3 is braked to the stop position (S-1) which is adjusted and assigned to the final position, ) The rotor is automatically braked until it stops at the stop position, and the (S-III) mechanical lock is automatically tightened in particular for locking at the stop position.

A wind turbine and a method for powering one or more hydraulic pitch actuators

本发明涉及风轮机以及驱动一个或更多个液压变桨致动器的方法。风轮机(1)包括用于为电网(27)产生电力的装置。风轮机(1)还包括具有一个或更多个叶片(5)的转子(4)，其中，转子(4)还包括用于主动地控制一个或更多个叶片(5)的变桨角度的一个或更多个液压变桨致动器(16)。风轮机(1)还包括适于驱动液压变桨致动器(16)的一个或更多个致动器液压泵(14)，且其中，所述一个或更多个致动器液压泵(14)由正常操作能源驱动。风轮机(1)还包括应急液压泵(17)，应急液压泵也适于驱动液压致动器(16)，应急液压泵(17)由电能存储装置(29)驱动。本发明还涉及一种驱动一个或更多个液压变桨致动器(16)以主动地控制风轮机(1)的一个或更多个叶片(5)的变桨角度的方法。

Method for shut down of a wind turbine having rotor blades with fail-safe air brakes

A method for shutdown of a wind turbine having one or more wind turbine blades includes detecting an operational condition of the wind turbine that calls for an expedited or emergency shutdown of the wind turbine by a manner other than normal pitch control shutdown. Upon detection of the operational condition, one or more air brake flaps configured on each of the turbine blades is deployed by removing power to a fail-safe actuator operatively coupled to each of the air brake flaps. The fail-safe actuator is configured to hold the respective air brake flap at a retracted position relative to a suction side of the turbine blade in a powered state of the fail-safe actuator and to release the air brake flap for automatic deployment to an open position upon loss of power to the fail-safe actuator.

Wind power plant stabilization

The invention concerns wind newer plant stabilization. An embodiment of a wind power plant includes a rotor to rotate about a rotor axis, a rotor blade coupled with the rotor, the rotor blade including a torque adjustment, and a stabilizing system to stabilize the rotor in a position, the stabilizing system including a control to adjust the torque of the rotor blade to counteract changes in a rotational position of the rotor.

Active flow control device and method for affecting a fluid boundary layer of a wind turbine blade

An active flow control device ( 10 ) and a method for affecting a fluid boundary layer of a wind turbine blade ( 100 ) are disclosed, as well as a stand-alone module ( 40 ) including a plurality of such devices and a wind turbine blade comprising a such devices and/or modules. One or more flow effectors ( 14 ) are rotatable back and forth in an oscillating movement (A) in a rotational plane. The flow effectors ( 14 ) are also movable in a direction transverse to the rotational plane between a retracted position and an extended position.

Reverse combined jet flow control method and device for pneumatic brake of wind turbine blade

本发明公开了一种用于风力机叶片气动刹车的反向联合射流控制方法及装置，每个叶片上均设有反向联合射流控制装置，叶片反向联合射流控制装置的剖面结构分为高压气室和低压气室两部分，高压气室与后缘喷气口相通，低压气室与前缘吸气口相通；沿着叶片方向的高压气室形成高压气流通道，高压气流通道经由叶片桨毂与机舱内的气泵一端相连通；沿着叶片方向的低压气室形成低压气流通道，低压气流通道经由桨毂与机舱内的气泵另一端相连通；后缘喷气口位于距翼型前缘80％c位置处，喷气口高度为1.38％c，前缘吸气口位于距翼型前缘6％c位置处，吸口高度为0.65％c，其中c表示翼型弦长。本发明采用反向联合射流，可以达到气动刹车的效果。

WINDMILL

Wind turbine

A wind turbine for a wind turbine electrical generator set in which movable nose portions (16) are located at or adjacent the leading edge of the blade and at or adjacent the tip (20) of the blade but is dispaceable purely longitudinally of the blade, i.e. radially outwardly of the blade, from the normal retracted position, in which the portion contributes to the lift of the aerofoil section, to an advanced position in which drag is produced, to prevent unwanted increase in the speed of the rotation of the rotor.

Wind turbine direction control

The present invention concerns a structure for converting the energy of a fluid flow into another form of energy, such as a windmill for generating current, said structure comprising: a base, and at least one turbine platform comprising: a ring structure (20) mounted on the base and configured to rotate about an axis with respect to the base, at least two fluid turbines (30, 40) mounted on the platform, each turbine comprising a rotor configured to rotate about an axis perpendicular to the axis of rotation of the ring structure in response to a fluid flow over the rotor, braking means controllable to individually impede rotation of the rotors, the fluid turbines being arranged so that, when rotation of a rotor is impeded by the braking means, the turbine platform is caused to rotate by the force resulting from a fluid flow over the impeded rotor.

CONTROL DEVICE FOR A WIND TURBINE BLADE

Wind driven power generator - has flaps on ends of blades given oscillating movement to produce to rotate impeller in and out of wind

The generator has an impeller on an axis which may be slightly inclined to the horizontal. Each blade has a flap at its outer end which pivots relatively to the blade. It is linked by a crankshaft to a motor inside the main part of the blade which is excited at the frequency corresponding to the angular speed of the blade. The resulting oscillation of the flaps produces a moment about the vertical axis. This rotates the impeller to turn it into the wind, reduces unbalanced moments on the tower, and turns the impeller out of the wind at high wind speeds.

A wind turbine and a method for feeding one or more hydraulic step change actuators

Una turbina eólica (1) que comprende medios para producir energía para una red eléctrica (27), comprendiendo adicionalmente dicha turbina eólica (1) un rotor (4) que incluye una o más palas (5), en la que dicho rotor (4) comprende adicionalmente uno o más actuadores hidráulicos de cambio de paso (16) para controlar activamente el ángulo de paso de una o más de dichas palas (5), una o más bombas hidráulicas de actuador (14) adaptadas para alimentar dichos actuadores hidráulicos de cambio de paso (16) y en la que dichas una o más bombas hidráulicas de actuador (14) son alimentadas por una fuente de energía de funcionamiento normal, caracterizada por que dicha turbina eólica (1) comprende adicionalmente una bomba hidráulica de emergencia (17) también adaptada para alimentar dichos actuadores hidráulicos (16), siendo alimentada dicha bomba hidráulica de emergencia (17) por un almacenamiento de energía eléctrica (29), en la que dicha turbina eólica comprende adicionalmente medios de detección de oscilación (26) adaptados para detectar oscilaciones en el sentido del borde en una o más de dichas una o más palas, y en la que dicha turbina eólica comprende adicionalmente medios de control (25) de bomba hidráulica de emergencia adaptados para activar dicha bomba hidráulica de emergencia si dichos medios de detección de oscilación detectan oscilaciones en el sentido del borde por encima de un nivel predefinido en una o más de dichas una o más palas. A wind turbine (1) comprising means for producing energy for an electrical network (27), said wind turbine (1) additionally comprising a rotor (4) including one or more blades (5), wherein said rotor (4 ) additionally comprises one or more hydraulic step change actuators (16) to actively control the angle of passage of one or more of said blades (5), one or more hydraulic actuator pumps (14) adapted to feed said hydraulic actuators of step change (16) and in which said one or more hydraulic actuator pumps (14) are fed by a normal ...

Vertical axis wind turbine with braking device

Method and device for controlling floating body wind power electricity generation device, and floating body wind power electricity generation device

Method of parking double-bladed rotor of wind power plant

A method for moving a double-bladed rotor of a wind power plant into a parking position characterized by the orientation of the rotor blades in a horizontal plane and braking the rotor.

Wind turbine, blade for a wind turbine, segment for a blade for a wind turbine, method for the fabrication and assembly of a wind turbine

Wind turbine, blade for a wind turbine, segment for a blade for a wind turbine, method for the production and assembly of a wind turbine. Wind turbine with a tower and blades and a vertical rotational axis. The wind turbine is provided with extended arms (8), around the vertical axis, to which flexible, in standstill hanging, blades (9) have been attached. Preferably, the blades have their structural materials on the length axis of the blade and the non-structural materials on the outside.

Aerodynamic brake for wind turbine blade

Blade (1) with aerodynamic brake for wind turbines, with a flexible folded strip extending radially along the suction side of the blade and acting as turbulence element (6), which is clamped forming a seal on its longitudinal sides and has close gaps between it and the end plates on the transverse sides. If the pressure in a duct (5) covered by the folded strip serving as turbulence element (6) increases, the folded strip bends, thereby producing a turbulence threshold which causes a break in the flow. A supporting pressure source is provided by the column of air under centrifugal acceleration inside the duct (5) into which air is fed in from the blade root. The pressure in the duct is increased, for example, by enlarging the through-flow cross section of an internal restrictor (4) arranged on the duct inlet compared to that in an external restrictor (7) via which the duct (5) is connected to a vacuum source. The internal restrictor (4) is opened when the admissible number of revolutions and/or the admissible torque is exceeded. …<IMAGE>…

Drive mechanism for adjusting the rotor blades of wind power installations

A device for adjustment of rotor blades which are pivotally mounted on a rotor hub of a wind power plant, with a drive for turning the rotor blades and a lockout which is connected to each rotor blade, the lockout being an activatable lockout which in the activated state prevents turning of the rotor blades into the operating position, but allows turning of the rotor blades into the feathered position.

Control system for a vertical axis wind turbine

Adjustable wing for wind motors

Wind turbine

Windmill

There is disclosed in the present application a wind wheel having a set of movable vanes whose orientation with respect to the plane of the wheel is changed automatically to limit the speed to a safe level in winds of high velocity. The wheel is constructed and shipped in segments and is especially adapted for ease of assembly and truing for minimal eccentricity and lateral run-out.

Wind turbine operated electrical generator system

A wind turbine operated electrical generator system, said system comprising a wind turbine of the axial flow type, the blades of the turbine including tip portions pivoted with respect to the remainder of the blade, a generator driven by the wind turbine and designed to operate within a given rotational speed range, said speed range being below the speed at which the wind turbine can develop its maximum power, a pin and socket connection on the outer end of at least some of said blades, and preferably each blade, for connecting the tip thereto and a cam track on the pin or socket, with a follower on the socket or pin, respectively, the cam track being shaped to cause the tip to pivot under centrifugal movement of the tip, so that a change in the torque produced by the pivoting at all times maintains the speed substantially within said given range, resilient means being provided to restore the position of the or each tip against centrifugal action.

Improvements relating to control of a wind turbine

Horizontal axis wind turbine

Disclosed is a horizontal axis wind turbine including: a rotor (3, 4a ― 4c); a nacelle (2); a tower (1); an independent pitch control device (12a); and a yaw control device (15a), wherein the horizontal axis wind turbine is an up-wind type one including a waiting mode, wherein (a) the independent pitch control device (12a) performs a first step of changing all the blades (4a ― 4c) to be in feathering states when the wind speed exceeds the predetermined value, a second step of changing the blades (4a - 4c) to be in reverse feathering states one by one sequentially, and a third step of holding all the blades (4a ― 4c) in the reverse feathering states, and (b) the yaw control device (15a) controls a yaw brake to take a braking value allowing the yaw rotation when the wind speed exceeds the predetermined value, wherein the rotor (3, 4a ― 4c) is allowed to swing to a leeward side of the tower (1) by executing the control operations (a) and (b) as the waiting mode.

Emergency power supply device for pitch drive for a wind turbine

Wind mill wing with air brake

By mounting an axle (18,19) in a wind mill wing (1) having a wing tip (22) capable of swinging out by means of a mounting (2,7,8) which may be bolted to the wing and which can furthermore squeeze about the axle (18), it is possible to mount this mounting on new wings as well as old wings in case the mountings thereof have become loose.

Method for stopping a wind turbine in two stages

停止桨距控制的风力涡轮机的方法，该风力涡轮机包括具有至少一个叶片(11)的转子、位于高速轴上的机械制动器(31)、用于调节叶片桨距角的变桨距系统(21，23，25)，该方法包括：a)第一阶段，变桨距系统(21，23，25)用于使转子减速；b)第二阶段，变桨距系统(21，23，25)和机械制动器(31)均用于使转子停止。当以下情况的其中之一出现时，第二阶段开始：高速轴的旋转速度低于预定值So；达到相对于第一阶段开始的预定时间延迟To；达到预定的高速轴扭矩水平TLo。

Horizontal axis wind turbine

Disclosed a horizontal axis wind turbine including: a rotor; a nacelle; a tower; an independent pitch control device; and a yaw control device, wherein the horizontal axis wind turbine is an up-wind type one including a waiting mode, wherein (1) the independent pitch control device performs a first step of changing all the blades to be in feathering states when the wind speed exceeds the predetermined value, a second step of changing the blades to be in reverse feathering states one by one sequentially, and a third step of holding all the blades in the reverse feathering states, and (2) the yaw control device controls a yaw brake to take a braking value allowing the yaw rotation when the wind speed exceeds the predetermined value, wherein the rotor is allowed to swing a leeward of the tower by executing the control operations (1) and (2) as the waiting mode.

ROTOR BLADE MADE OF SYNTHETIC RESIN REINFORCED BY FIBERS

Pale de rotor en résine synthétique renforcée par fibres, dont le profil est réalisé de manière à pouvoir subir une torsion autour de l'axe longitudinal de la pale de rotor par des actionneurs, au moins dans la zone de la pointe de pale. La peau de torsion de la pale de rotor est réalisée dans la région de la pointe de pale (r-R) de manière anisotrope pour créer un couplage traction-rotation et un actionneur (8) pouvant être commandé, agissant dans la direction longitudinale de la pale de rotor sur la pointe de pale de rotor, est disposé dans le longeron (4) de pale de rotor. Pour l'obtention de l'anisotropie de la peau de torsion, un bobinage unilatéral est prévu avec un angle d'enroulement inférieur à 45 deg. par rapport à l'axe longitudinal de la pale de rotor. L'angle d'enroulement dépend du rapport course-force de l'actionneur et peut se situer entre 18 deg. et 40 deg.. Dans la zone de la pointe de pale la peau de torsion réalisée de manière anisotrope est disposée libre sur le longeron (4) de pale de rotor.

Method and control device for a wind turbine, and computer program product, digital storage medium and wind turbine

The invention concerns a method of operating a wind power installation in which the rotor is brought to a halt and fixed, comprising the steps: braking the rotor, positioning the rotor at a stopped position, and fixing the rotor in the stopped position. According to the invention it is provided that an end position is predetermined, the rotor is braked in regulated fashion to a stopped position associated with the end position, and for positioning for the predetermined end position the rotor is braked in an automated procedure until stopped at the stopped position, and for fixing in the stopped position a mechanical fixing device is applied, in particular automatically.

A wind turbine and a method for powering one or more hydraulic pitch actuators

本发明涉及风轮机以及驱动一个或更多个液压变桨致动器的方法。风轮机(1)包括用于为电网(27)产生电力的装置。风轮机(1)还包括具有一个或更多个叶片(5)的转子(4)，其中，转子(4)还包括用于主动地控制一个或更多个叶片(5)的变桨角度的一个或更多个液压变桨致动器(16)。风轮机(1)还包括适于驱动液压变桨致动器(16)的一个或更多个致动器液压泵(14)，且其中，所述一个或更多个致动器液压泵(14)由正常操作能源驱动。风轮机(1)还包括应急液压泵(17)，应急液压泵也适于驱动液压致动器(16)，应急液压泵(17)由电能存储装置(29)驱动。本发明还涉及一种驱动一个或更多个液压变桨致动器(16)以主动地控制风轮机(1)的一个或更多个叶片(5)的变桨角度的方法。

Wind turbine blade with lift-regulating means in form of slots or holes

A blade ( 10 ) for a wind turbine rotor with a hub is described. The blade extends in a longitudinal direction along a longitudinal axis and having a root area ( 16 ) closest to the hub and a tip region furthest away from the hub. The blade ( 10 ) along at least a portion of the longitudinal direction of the blade has an envelope, which defines an airfoil profile having, in normal operation, a pressure side ( 20 ) and a suction side ( 19 ), and further having a leading edge ( 18 ) and a trailing edge ( 17 ), which edges define an airfoil chord line extending between them. The blade ( 10 ) comprises adjustable lift-regulating means extending in the longitudinal direction of the blade ( 10 ), and activating means by means of which the lift-regulating means can be adjusted and thus alter the aerodynamic properties of the blade ( 10 ). The lift-regulating means are adapted and arranged so that by activation of the activating means, the lift can be reduced in a zone extending in the longitudinal direction of the blade ( 10 ) from a first position in proximity to the blade tip ( 14 ) to a second position between the first position and the root area ( 16 ) and this second position being variable in the longitudinal direction of the blade. The lift-regulating means are formed of at least one slot ( 12, 13, 15 ) or a number of holes ( 42, 43, 45, 52, 53, 55 ) arranged in at least one longitudinally extending zone, thereby allowing an interior cavity ( 22, 23, 25 ) of the blade ( 10 ) to communicate with the exterior. The lift-regulating means are adjustable by means of one or more activating means to regulate the amount of air emitted from the interior cavity ( 22, 23, 25 ) to the exterior to alter the aerodynamic properties of the blade ( 10 ).

Horizontal axis wind turbine apparatus

The object of the invention is to provide a control apparatus (C) of a horizontal axis wind turbine apparatus (WTG) that calculates the value en of a pitch angle command for each blade based on the rate of change (ΨD) of the azimuth angle (Ψ) of a nacelle (N) and the rotor azimuth angle (φ) of the blades (B1, B2 and B3), causes the rotor (R) to generate torque around the yaw axis by periodically controlling the angle change of the pitch angle of the blades (B1, B2, B3), and using that torque, controls the rate of change of the azimuth angle of the nacelle (N). The value of that angle change is calculated as a value that increases as the input value of the rate of change (ΨD) increases.

Wind rotor automatic air brake

ABSTRACT OF THE DISCLOSURE A spring-loaded pivoting end plate that is hinged such that it is deployed by centrifugal force into the airstream to thereby act as an aero-dynamic brake for wind turbines in overspeed conditions. The brake has a stationary portion fixed on the tip of the turbine rotor and a pivoting por-tion hinged for movement with respect to the fixed portion. The longitudinal centerline of the brake coincides with the chord line of the turbine blade and the pivoting movement is about a hinge axis that is normal to the rota-tional plane of the turbine. The planform of the brake has a low aspect ratio shape with the ratio of the fore and aft chordwise length to the width being one or greater. The edges of the brake in the normal running condition ex-tend beyond the contour of the turbine blade to serve as an end plate such that the aerodynamic efficiency of the blade is improved thereby.

Device for regulating wind turbines

Vertical-axis wind rotor

This present invention relates to a wind rotor with a vertical shaft, formed by means of a vertical shaft (1), two horizontal end supports (3, 3') and a plurality of blades (4, 4') arranged between said supports. The features of the invention are centered on the fact that the blades (4, 4') are of two types, in an alternating arrangement, blades (4) prepared and configured for forming drag elements and blades (4') prepared for forming lift elements, with the additional particularity that the latter stall when they exceed a pre-established wind speed, causing a braking effect in the rotor. This structure eliminates many of the drawbacks of the known wind rotors with a vertical shaft, such that it does not require an important starting torque, a braking system with strong winds, or the orientation and reorientation with respect to the dominant winds. Nor is it limited to being used with laminar winds, and it does not require being arranged at great heights, being able to be installed on a short support post (2) in optimal operating conditions.

DEVICE FOR REGULATING THE PASSENGER PASS OF A WINDER

Aerodynamic brake for vertical wind turbine installed on e.g. roof of house, has blade holder formed of partially deformable profile structure in cooperation with blade

The aerodynamic brake has a blade holder (4) whose one end (41) is connected with a blade (3) that is rotatably connected with a central tube (2) around longitudinal axis. Other end (42) of the blade holder is connected with the central tube. The blade holder is formed of partially deformable profile structure in cooperation with the blade. The blade holder is made of stainless steel and formed with slots (9).

Method and device for controlling floating body wind power electricity generation device, and floating body wind power electricity generation device

A control method for a wind power electricity generation device wherein a wind power generator is erected on a floating body, said control method being equipped with a pitch angle increase step, wherein the pitch angle of the blades of the wind power generator is increased so as to apply aerodynamic braking force to the rotor of the wind power generator when the wind power generator is stopped. In the pitch angle increase step, a first rate of change of the pitch angle of the blades during a first period of movement, wherein the wind power generator is inclined more to the upwind side than the vertical direction by the rocking of the floating body, is made less than a second rate of change of the pitch angle of the blades during a second period of movement, wherein the wind power generator is inclined more to the downwind side than the vertical direction by the rocking of the floating body.

Active flow control device and method for affecting a fluid boundary layer of a wind turbine blade

公开一种主动流动控制装置(10)和用于影响风力涡轮机叶片(100)的流体边界层的方法，以及包括多个该装置的独立模块(40)和包括该装置和/或模块的风力涡轮机叶片。一个或更多个流动效应器(14)在旋转平面内可以摆动运动(A)来回旋转。该流动效应器(14)还可在横向于旋转平面的方向上在缩回位置与伸展位置之间移动。

A method for de-icing a blade of a wind turbine, a wind turbine and use thereof

The invention relates to a method for de-icing a blade (5) of a wind turbine (1), after the wind turbine (1) has been idle for a period of time. The method comprises the steps of • creating a controlled acceleration condition of the blade (5), and • subsequently creating a controlled deceleration condition of the blade (5), whereby ice is shaken of the blade (5). The invention further relates to a wind turbine (1) comprising a rotor including at least one blade (5), and de-icing means for de-icing the blade (5) wherein the de- icing means comprises actuating means (19) of the wind turbine (1) and wherein the de-icing means further includes control means for performing a method according to any of claims 1 to 11. Furthermore, the invention relates to use of a wind turbine.

Method for shut down of a wind turbine having rotor blades with fail-safe air brakes

Method for shut down of a wind turbine having rotor blades with fail-safe air brakes

A method for shutdown of a wind turbine having one or more wind turbine blades includes detecting an operational condition of the wind turbine that calls for an expedited or emergency shutdown of the wind turbine by means other than normal pitch control shutdown. Upon detection of the operational condition, one or more air brake flaps configured on each of the turbine blades is deployed by removing power to a fail-safe actuator operatively coupled to each of the air brake flaps. The fail-safe actuator is configured to hold the respective air brake flap at a retracted position relative to a suction side of the turbine blade in a powered state of the fail-safe actuator and to release the air brake flap for automatic deployment to an open position upon loss of power to the fail-safe actuator.

Improvements relating to wind turbines having blades equipped with boundary layer control system

Method and apparatus for wind turbine braking

一种用于制动包括至少一个耦合到转子(18)的转子叶片(24)的风力涡轮(10)的方法。该方法包括基于该风力涡轮的部件的设计参数选择性控制至少一个转子叶片相对风向的俯仰角度，以便有助于减小由于制动引发到所述风力涡轮部件内的作用力。

Wind power plant

The invention concerns a wind power plant, especially a horizontal-axle wind power plant with a rotor axle running preferably about horizontally and at least one rotor having a rotor blade extending transversely, preferably approximately perpendicularly, to the rotor axle, an adjusting means to adjust the at least one, and preferably each, rotor blade, with which the adjustment is variable with respect to the torque at the rotor axis generated by the wind load, and a stabilizing system with which the rotor can be stabilized in at least one specified, especially low-load rotational position (park position), with the stabilizing system having a coupling and particularly a control means which can be coupled to the adjusting means, such that the stabilizing system has a coupling, particularly a control means which can be coupled to the adjustment means, with which an adjustment of at least one rotor blade can be initiated in case of deviation from the specified rotational position, particularly in case of a rotational movement of the rotor from the specified rotational position, to generate a torque counteracting that deviation or rotational movement.

Verfahren zum enteisen einer schaufel einer windturbine, windturbine und verwendung davon

Windkraftanlage

Vertical blade in a vertical axis windmill

Aktive strömungssteuervorrichtung und verfahren zum bewirken einer fluidgrenzschicht einer windturbinenschaufel

Rotor blade of a wind turbine comprising a lift modifying device and method for installing thereof

一种具有辅助启动组件的支臂刹车垂直轴风力机

本发明公开了一种具有辅助启动组件的支臂刹车垂直轴风力机，包括：底座；活动设置于所述底座上的转轴；活动设置于所述转轴上的风力机支臂组件；所述风力机支臂组件包括活动套接于转轴上的第一固定轴座、设置于第一固定轴座正上方的第二固定轴座、活动设置于第一固定轴座与第二固定轴座上的支臂及与所述支臂固接的叶片；所述支臂以水平方向为轴心进行0‑90度的转动。根据本发明，结构简单，同时提供刹车及辅助启动的功能，大大降低了控制系统的成本。

Improvements relating to wind turbines having blades equipped with boundary layer control system

A wind turbine system comprising a nacelle mounted on a tower, a rotor having a plurality of blades and a boundary layer control system configured to control airflow through blade surface openings in each of the blades. The wind turbine system includes a control system configured to perform at least one of the following: to monitor an operational speed parameter of the wind turbine, and to activate the boundary layer control system if it is determined that the 1 operational speed parameter exceeds a predetermined speed parameter threshold; to monitor tower motion and to activate the boundary layer control system based on a determination of excessive tower motion; to monitor for a wind turbine shutdown condition, and to activate the boundary layer control system if it is determined that a wind turbine shutdown condition has been identified; and to monitor the aerodynamic loads on the blades, and to activate the boundary layer control system also based on a determination of excessive blade loads. The system thereby provides an approach to activating and deactivating the boundary layer control system to reduce operational risk to the wind turbine.

Rotor blade of a wind turbine comprising a lift modifying device and method for installing thereof

The invention relates to a rotor blade (10) of a wind turbine, the rotor blade (10) comprising a lift modifying device (20) having at least one fluid jet module (21) and at least one compressed fluid source (22), wherein the at least one fluid jet module (21) comprises multiple fluid jets (23), which are fluidically connected to the at least one compressed fluid source (22), whereby the at least one fluid jet module (21) is mounted as an add-on onto an outer surface of the suction side (17) or the pressure side (18) of the rotor blade (10). The invention further relates to a method for installing this rotor blade (10), whereby a rotor blade (10) is provided and the at least one fluid jet module (21) is mounted as an add-on onto the outer surface of the suction side (17) or the pressure side (18) of the rotor blade (10).

包括升力改变装置的风力涡轮机的转子叶片及其安装方法

本发明涉及一种风力涡轮机的转子叶片（10），所述转子叶片（10）包括具有至少一个流体喷射模块（21）和至少一个压缩流体源（22）的升力改变装置（20），其中所述至少一个流体喷射模块（21）包括多个流体喷射器（23），所述多个流体喷射器流体连接到所述至少一个压缩流体源（22），其中所述至少一个流体喷射模块（21）作为附加件被安装到所述转子叶片（10）的吸力侧（17）或压力侧（18）的外表面。本发明进一步涉及用于安装该转子叶片（10）的方法，其中提供转子叶片（10）并且所述至少一个流体喷射模块（21）作为附加件被安装到所述转子叶片（10）的所述吸力侧（17）或所述压力侧（18）的所述外表面上。

Rotor blade of a wind turbine comprising a lift modifying device and method for installing thereof

A rotor blade of a wind turbineis provided, the rotor blade including a lift modifying device having at least one fluid jet module and at least one compressed fluid sources, wherein the at least one fluid jet module includes multiple fluid jets, which are fluidically connected to the at least one compressed fluid source, whereby the at least one fluid jet module is mounted as an add-on onto an outer surface of the suction side or the pressure side of the rotor blade. Also provided is a method for installing this rotor blade, whereby a rotor blade is provided and the at least one fluid jet module is mounted as an add-on onto the outer surface of the suction side or the pressure side of the rotor blade.

Lift modifying device for a rotor blade, rotor blade of a wind turbine and method for modifying the lift of a rotor blade

The invention relates to a lift modifying device (20) for a rotor blade (10) of a wind turbine, the lifting modifying device (20) comprising at least one fluid jet module (21) and at least one compressed fluid source (22), wherein the at least one fluid jet module (21) comprises multiple fluid jets (23), which are fluidically connected to the at least one compressed fluid source (22), the at least one fluid jet module (21) is configured to be arranged at a suction side (17) or a pressure side of an airfoil of the rotor blade (10), and the at least one fluid jet module (21) is configured to generate a fluid curtain (A) separating an air flow (W) on the suction side (17) or the pressure side of the airfoil, when the rotor blade (10) is provided with the lift modifying device (20) on its suction side (17) or pressure side and the at least one compressed fluid source (22) supplies compressed fluid to the at least one fluid jet module (21). Further, the invention relates to a rotor blade (10) having the lift modifying device (20) and a method for modifying the lift of a rotor blade (10).