СПОСОБ ИЗГОТОВЛЕНИЯ РОТОРНОЙ ЛОПАСТИ

Изобретение касается способа изготовления роторной лопасти ветроэнергетической установки в двухэтажном производственном здании, которое имеет уровень первого этажа для производства первой части роторной лопасти и расположенный над этим уровнем первого этажа уровень верхнего этажа для производства второй части, например заготовки для этой роторной лопасти, причем на уровне первого этажа и на уровне верхнего этажа производство первых и вторых частей осуществляют одновременно и/или параллельно. Изобретение позволяет снизить производственные затраты, обеспечить повышенную надежность, непрерывность и безопасность производства роторной лопасти. 2 н. и 6 з.п. ф-лы, 6 ил.

ИЗГОТОВЛЕНИЕ КОРНЕВОЙ СЕКЦИИ

Изобретение относится к способу изготовления корневой секции рабочей лопатки (41) ветровой турбины. Он содержит этапы сборки (A) множества опорных стержней (1) с секцией (17) сопряжения со средством сопряжения втулки ветровой турбины по существу в округлой форме так, чтобы между опорными стержнями (1) имелись промежутки (33), расположения (B) первых волокон (31) в промежутках (33), причем первые волокна (31) являются физически и/или химически совместимыми с литьевым материалом, размещения (C) первого формовочного инструмента (35) вдоль наружной поверхности округлой формы и второго формовочного инструмента вдоль внутренней поверхности округлой формы, обработки (D) литьевого материала так, чтобы образовалось его сцепление с первыми волокнами (31). Изобретение также относится к удерживающему устройству (39) опорных стержней для такой цели и корневой секции рабочей лопатки (41), изготовленной таким способом. Изобретение направлено на упрощение процесса изготовления конца корневой части для ...

ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА И БЛОК МОЛНИЕЗАЩИТЫ ДЛЯ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ

Изобретение относится к ветроэнергетической установке и блоку молниезащиты для ветроэнергетической установки. Ветроэнергетическая установка включает гондолу (104) и ротор, который имеет по меньшей мере две лопасти (108) ротора. Лопасти (108) ротора имеют каждая комлевую часть (108a) лопасти ротора, по меньшей мере один металлический проводник (220), служащий проводником для ударившей молнии, и соединенное с ним проводящее кольцо (230), которое предусмотрено в области комлевой части лопасти ротора. На невращающейся части гондолы (104) закреплен блок (240) молниезащиты таким образом, что блок (240) молниезащиты опирается на кольцо (230). Блок (240) молниезащиты имеет два ролика (241) и молниеотводную мачту (242), при этом свободный конец молниеотводной мачты (242) находится от наружного конца роликов (241) на расстоянии, задающем искровой промежуток. Изобретение направлено на повышение надежности отвода молнии в области лопасти. 2 н. и 3 з.п. ф-лы, 3 ил.

ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

Изобретение относится к ветроэнергетической установке. Задачей изобретения является возможность монтажа роторных лопастей при высоких ветроэнергетических установках. Ветроэнергетическая установка содержит ротор (70). На роторе (70) предусмотрена возможность монтажа роторных лопастей (30), и электрический генератор (60). Электрический генератор (60) имеет статор (100) и ротор (200), несколько сдвигающих блоков (300). Первый конец сдвигающего блока разъемно закрепляется на статоре (100) генератора. Второй конец сдвигающего блока разъемно закрепляется на роторе (200). Сдвигающие блоки (300) имеют, каждый, гидравлический цилиндр (320), выдвигание которого является управляемым. При приведении в действие сдвигающих блоков ротор (200) сдвигается относительно статора (100). 3 н. и 2 з.п. ф-лы, 8 ил.

Ветроэлектроагрегат сегментного типа

Изобретение относится к области ветроэнергетики. Ветроэлектроагрегат сегментного типа содержит башню, ветроколесо с горизонтальной осью вращения и роторными элементами, поворотное основание со ступичным узлом и стабилизатором, статорные элементы. Статорные элементы составлены из двух групп, верхней и нижней, статорные элементы верхней группы выполнены круглой формы, установлены в зоне роторных элементов, расположенных по длине лопастей ветроколеса, и снабжены отверстием, которое фиксирует их на башне, а статорные элементы нижней группы закреплены на дискообразном основании в зоне торцевых роторных элементов. Изобретение направлено на уменьшение массы при увеличении статорных модулей. 5 ил.

СПОСОБ РАБОТЫ ВЕТРОВОЙ ЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ

Использование: в области электротехники. Технический результат - повышение надежности. Согласно способу, когда есть ветер, который имеет скорость выше начальной скорости и ниже скорости отключения, ветровая энергетическая установка поставляет электрическую энергию в сеть электроснабжения, при этом при работе ветровой энергетической установки выше номинального значения или соответственно ниже скорости отключения ротор ветровой энергетической установки вращается. С ротором соединен генератор для генерирования электрической энергии. Ветровая энергетическая установка имеет средства для измерения имеющейся в сети электроснабжения частоты, которые соединены с управляющим устройством для управления работой ветровой энергетической установки. В соответствии с изобретением предлагается, что отдаваемую генератором ветровой энергетической установки в сеть мощность быстро и в течение короткого времени повышают выше текущей мощности ветровой энергетической установки, когда частота электрической сети ...

СПОСОБ ИЗГОТОВЛЕНИЯ КОМПОЗИТНОГО КОНСТРУКТИВНОГО ЭЛЕМЕНТА, КОМПОЗИТНЫЙ КОНСТРУКТИВНЫЙ ЭЛЕМЕНТ И ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

Изобретение относится к способу изготовления и композитному конструктивному элементу, в частности для ветроэнергетической установки. Способ изготовления композитного конструктивного элемента, в частности для ветроэнергетической установки, включающего в себя множество, по меньшей мере, двухкомпонентных композитных фасонных частей, причем первый компонент образуют из задающего форму материала сердечника, а второй компонент образуют в виде части соединительного слоя, причем задающий форму материал сердечника образуют, сообразно форме призмы, в виде призматического тела с многоугольным основанием, причем многоугольник основания имеет базис и угол к базису, который составляет от 30° до 60°, и соединяют множество призматических тел, причем на стыкующихся друг с другом сторонах выполняют функциональную ориентацию соединительных слоев таким образом, что соединительный слой проходит под углом 30°-60° к базисной поверхности, по меньшей мере, одной из прилегающих друг к другу призм. При этом второй ...

РОТОРНАЯ ЛОПАСТЬ ДЛЯ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ И ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА

Данное изобретение касается роторной лопасти (1) со стороной разрежения и напорной стороной для ветроэнергетической установки, причем роторная лопасть имеет: - комель (2) роторной лопасти в ступичной области (I) для прикрепления роторной лопасти (1) к ступице ротора, - концевую часть (3) роторной лопасти, расположенную на обращенной от комля (2) роторной лопасти стороне области (II) концевой части, - по меньшей мере один турбулизатор (9), расположенный между комлем (2) роторной лопасти и концевой частью (3) роторной лопасти, причем этот по меньшей мере один турбулизатор (9) в продольном направлении роторной лопасти содержит расположенные рядом друг с другом завихряющие элементы (10, 11) длиной (L) и высотой (H), и ориентированные каждый под углом к направлению (SR) основного потока роторной лопасти (1), причем эти завихряющие элементы (10, 11) в продольном направлении роторной лопасти имеют между собой боковое расстояние (D, D1). В зависимости от соответствующей дистанции (R) между системой ...

ЛОПАСТЬ ВЕТРОКОЛЕСА

Полезная модель относится к области ветроэнергетики и может быть использована при разработке конструкций лопастей ветроколес - ветряных турбин, приводящих в движение роторы ветрогенераторов. Технический результат заключается в увеличении КПД ветрогенератора. Технический результат достигается тем, что лопасть ветроколеса, имеющая симметричный профиль, на которой ее противолежащие поверхности покрыты слоями материалов, имеющих разные значения коэффициента теплопоглощения, причем поверхность, на которую воздействует подъемная сила, покрыта слоем материала, обладающим большим значением коэффициента теплопоглощения, чем значение коэффициента теплопоглощения слоя материала, покрывающего противолежащую ей поверхность лопасти, при этом поверхности лопасти отделены друг от друга термоэкраном, выполненным из механически прочного материала, обладающего теплоизоляционными свойствами, согласно решению, внутри лопасти по ее продольной оси размещено устройство для дополнительного получения электрической ...

Ветроэнергетическая установка

Ветроэнергетическая установка, содержащая башню, поворотное основание, направляющий киль, статор, вращающееся колесо со втулкой и лопастями и ротор, отличающаяся тем, что ротор снабжен механизмом фиксированного поворота, а также узлами крепления лопастей, причем последние снабжены полюсными наконечниками.

ЛОПАСТЬ РОТОРА, ЭЛЕМЕНТ ЛОПАСТИ РОТОРА И СПОСОБ ИЗГОТОВЛЕНИЯ

... 1. Лопасть ротора или элемент лопасти ротора для ветроэнергетической установки, содержащая/ий поверхностную пленку, прореагировавшую с отверждаемой смолой.2. Лопасть ротора или элемент лопасти ротора по п.1, дополнительно содержащая/ий волокнистый материал, пропитанный отверждаемой смолой.3. Элемент лопасти ротора по п.1, причем элемент лопасти ротора выбран из группы, состоящей из перемычки, наружной оболочки лопасти ротора и ее частей, в частности, половины оболочки нагнетающей стороны или засасывающей стороны, передней кромки лопасти ротора, задней кромки лопасти ротора, вершины лопасти ротора, пояса лонжерона, клейкого уголка, фланцевого усиления, внутреннего усиления для средств упора, камеры балласта и камеры балансира.4. Лопасть ротора или элемент лопасти ротора по п.1 со следующими размерами:- наружная оболочка, предпочтительно нагнетающая сторона лопасти ротора и/или засасывающая сторона лопасти ротора, пояса лонжеронов, клейкие уголки: длина от 1 м до 150 м, предпочтительно от ...

СПОСОБ РАБОТЫ ВЕТРОВОЙ ЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ

... 1. Способ работы ветровой энергетической установки, при этом ветровая энергетическая установка подключена к сети электроснабжения и при работе, т.е. когда есть ветер, который имеет скорость выше начальной скорости и ниже скорости отключения, поставляет электрическую энергию в сеть электроснабжения, а именно, с желаемым или соответственно требуемым для сети электроснабжения напряжением и частотой, при этом при работе ветровой энергетической установки выше номинального значения или соответственно ниже скорости отключения, ротор ветровой энергетической установки, который имеет по меньшей мере одну лопасть ротора, вращается, при этом с ротором ветровой энергетической установки соединен генератор, который приводят в действие ротором для генерирования электрической энергии, при этом ветровая энергетическая установка имеет средства для измерения имеющейся в сети электроснабжения частоты, причем эти средства для измерения частоты сети соединены с управляющим устройством для управления работой ветровой ...

ЛОПАСТНОЕ КОЛЕСО С ОДНИМ ОБОДОМ ДЛЯ ВЕТРОТУРБИННОЙ ГЕНЕРАТОРНОЙ УСТАНОВКИ

СПОСОБ И СОЛНЕЧНАЯ ВЕТРОСТАНЦИЯ ДЛЯ ПРОИЗВОДСТВА ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ

... 1. Способ получения электрической энергии, включающий создание искусственного воздушного потока необходимой скорости, наличие солнечной батареи и группы концентраторов солнечных лучей, передачу электрического тока от солнечной батареи и группы концентраторов на двигатель посредством которого вращают редуктор, соединение редуктора с подвижной опорой, на которой устанавливают вращающуюся с заданной скоростью раму и вихревую воздушную турбину.2. Способ по п.1, отличающийся тем, что воздушный поток имеет постоянную скорость по меньшей мере 12 м/с.3. Способ по п.2, отличающийся тем, что воздушный поток закручивают в направлении вращения ротора турбины посредством направляющих отверстий.4. Способ по п.3, отличающийся тем, что турбину вращают по радиусу по меньшей мере два метра с заданной скоростью посредством солнечной энергии и концентраторов солнечных лучей, установленных под углом от 20° до 45°.5. Способ по п.4, отличающийся тем, что осуществляют подачу части электрической энергии на двигатель ...

ВЕТРОЭНЕРГЕТИЧЕСКАЯ УСТАНОВКА И БЛОК МОЛНИЕЗАЩИТЫ ДЛЯ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ

Rotorblatt einer Windenergieanlage

Die Erfindung betrifft ein Rotorblatt (1) einer Windenergieanlage mit einer Rotorblattwurzel (4) zum Anbinden des Rotorblattes (1) an eine Rotornabe und einer zur Rotorblattwurzel (4) abgewandten Seite angeordneten Rotorblattspitze sowie eine Windenergieanlage mit solchen Rotorblättern. Dabei weist eine relative Profildicke, die als Verhältnis von Profildicke (2) zu Profiltiefe (3) definiert ist, in einem mittleren Bereich (6) zwischen Rotorblattwurzel und Rotorblattspitze ein lokales Maximum auf.

Windkraftanlage und Verfahren zu dessen Montage

Die Erfindung betrifft eine Windkraftanlage mit einer Rotornabe und mindestens einem Rotorblatt, dessen Blattwurzel mit einer Vielzahl von Befestigungsmitteln an einem Pitchlager befestigbar ist, welche mit der Rotornabe verbunden oder verbindbar ist, sodass mittels des Pitchlagers das Rotorblatt relativ zur Rotornabe um seine Längsachse drehbar ist. Die Befestigungsmittel sind dabei gabelförmige Befestigungselemente, zwischen denen die Blattwurzel eingeschoben und mit Hilfe eines Querbolzens verspannt wird.

Energieerzeugungssystem

Bereitgestellt wird ein Energieerzeugungssystem, das in der Lage ist, Windenergie effizient in elektrische Energie umzuwandeln Diese Erfindung wird bereitgestellt mit: einem Luftreifen (10); einem Rad (20), auf dem der Luftreifen (10) montiert ist; und mindestens einer Generatorwindturbine (40), die in einem Hohlraum (30), der durch den Luftreifen (10) und das Rad (20) definiert ist, an dem Luftreifen (10) und/oder dem Rad (20) angebracht ist.

Rotorblattform und Verfahren zur Herstellung eines Rotorblattes für eine Windenergieanlage sowie Windenergieanlage

Die Erfindung betrifft ein Rotorblatt für eine Windenergieanlage mit einer Blattwurzel, einer Blattspitze und mindestens einer Rotorblattschale (4, 5), welche sich in einer Längsrichtung (L) von der Blattwurzel zur Blattspitze erstreckt und einen inneren Schalenbereich (9) und einen äußeren Schalenbereich (10) aufweist, wobei der innere Schalenbereich (9) einen ersten Faserverbund mit mindestens zwei ersten Faserlagen (11, 12) und der äußere Schalenbereich (10) einen zweiten Faserverbund mit mindestens zwei zweiten Faserlagen (13, 14) aufweist und sich die ersten und zweiten Faserlagen (11 - 14) im Wesentlichen in Längsrichtung (L) erstrecken, wobei mindestens eine erste Faserlage (11) des ersten Faserverbunds an oder im Bereich (ΔE) mindestens einer auf die Längsrichtung (L) bezogenen Endposition (E) endet, wohingegen sich die übrigen ersten Faserlagen (12) des ersten Faserverbunds über die Endposition (E) hinaus erstrecken, und mindestens eine zweite Faserlage (13) des zweiten Faserverbunds ...

Rotorblatt für eine Windenergieanlage und Verfahren zur Dämpfung von Schwingungen eines Rotorblatts

Rotorblatt, insbesondere für eine Windenergieanlage, das mindestens einen Massenaktor aufweist, der einen Aktor und eine Masse aufweist, und wobei die Masse (6) in einer Pendelbewegung linear oder bogenförmig bewegbar ist, dadurch gekennzeichnet, dass der Massenaktor (4) mit einem Sensor (7) und einem Regler (9) als selbstständig handhabbare Einheit ausgebildet ist.

Verfahren und Vorrichtung zur Kühlung von Windkraftanlagengeneratoren

Ein Windkraftanlagengenerator (10) enthält einen Stator (14), der einen Kern (32) und eine Mehrzahl von Statorwicklungen (38) aufweist, die in Umfangsrichtung beabstandet um eine Generatorlängsachse (28) angeordnet sind. Ein Rotor (12) ist um die Generatorlängsachse drehbar und enthält eine Mehrzahl von magnetischen Elementen (46), die mit den Rotor verbunden sind und mit den Statorwicklungen zusammenwirken. Die magnetischen Elemente sind zur Erzeugung eines Magnetfeldes eingerichtet, und die Statorwicklungen sind für eine Wechselwirkung mit dem Magnetfeld eingerichtet, um in den Statorwicklungen eine Spannung zu erzeugen. Eine Wärmerohranordnung (60) ist mit dem Stator oder Rotor thermisch verbunden, um die in dem Stator oder Rotor erzeugte Wärme abzuführen.

Wind turbine composite structures

Wind-driven generator and impeller locking device for wind-driven generator

A wind turbine blade and a method of assembling a wind turbine blade and a spar cap connection piece.

Wind Turbine Monitoring

A method of monitoring the performance of a wind turbine 1 uses bending moment data from strain sensors 4 in the turbine blades 2 to calculate rotational speed of the turbine 1, angular position of the turbine blades 2, angle of inclination of the turbine blades about an axis extending radially from the rotor by comparison of the components of mechanical strain in two non-parallel directions, drive torque and resultant load on the rotor 3. The method has the advantage that the inputs to the drive train of the wind turbine can be measured directly.

ISO- grid wind turbine and hub design concept

Flap control for wind turbine blades

Improvements in or relating to fibre reinforced composites

Improvements in or relating to composite structures

Hub of a wind turbine

Rotor blade extension portion having a skin located over a framework

Fairing for a modular blade

A fairing for a modular blade of a wind turbine generator, comprising a joining zone (1) disposed between two consecutive modules (2, 3) of the modular blade (100). The fairing (200) is comprised of different components; the suction side fairing (12), the pressure side fairing (13) and auxiliary components, such as tabs (15, 16) to facilitate the joining of the components. The leading edge fairing (19) and the trailing edge fairing (20) are constituted of an elastomeric material, preferably silicone, supported in a rigid glass fibre framework (21) in order to absorb the warping experienced by the blade during the operation thereof. The attachment elements employed to join the fairings together and to the setbacks (11, 11') of the blade shell (100) are rivets or similar. All the fairings incorporate the metal elements necessary to be equipotentially bonded, being linked to the lightning down-drop.

WIND ENERGY PLANT WITH A HOLLOW SHAFT FOR ROTOR HUB AND GENERATOR

ROTOR BLADE CONNECTION

COURSE WHEEL IN A ROTOR SYSTEM FOR WINDUND WATER TURBINES

CAR OF A WIND ENERGY PLANT WITH INSERTED MAINTENANCE CRANE TO THE ACCESS TO TURBINE PARTS

Wind turbine and wind park with wind turbine

Windenergieanlage (100) mit horizontaler Achse (170) und mindestens einem Rotorflügel (160) mit einem Rotorprofil (165), das am, durch eine maximale Gleitzahl gekennzeichneten, Auslegungspunkt im äußeren Bereich des Rotorflügels einen Auftriebsbeiwert von cA=1.3 und einen Widerstandsbeiwert von cW=0.01 nicht überschreitet, wobei dieses Profil einen Anstellwinkelbereich von mehr als 5° aufweist, in welchem der Widerstandsbeiwert den minimalen Wert des Widerstandsbeiwertes von cW≤0,007 um 50% nicht überschreitet und/oder eine Blattspitzengeschwindigkeit von 71.5 m/s nicht überschritten wird und/oder die Auslegungsschnelllaufzahl mindestens 6.5 aber weniger als 8.5 beträgt. Die Windenergieanlage weist im regulären Betrieb bei einer Windgeschwindigkeit von mehr als 4 m/s stets einen statischen Schubbeiwert cS kleiner als 0.8 auf und ist für eine Auslegungsturbulenzintensität entsprechend der Definition zum charakteristischen Wert der Turbulenzintensität I15 bei 15 m/s nach IEC 61400-1, Edition ...

Propeller

A propeller having a means for creating fluid flow in a non-axial direction and redirecting it in an axial direction.

Method for the production of a connection flange

Wind turbine rotor

Wind power plant rotor comprising one or more rotor blades (20, 30) and stiffening elements (5-9) to stiffen the rotor, where the rotor blades (20, 30) are arranged such that they can turn around their longitudinal axes relative to corresponding rotor stiffening elements (5-9). Each rotor blade (20, 30) may comprise at least two rotor blade parts (1, 2) where the outer rotor blade part (2) may be turnably arranged relative to the inner rotor blade part (1). The solution facilitates use of longer or slimmer rotor blades (20, 30) while strength and stiffness increase. The fatigue forces are thereby reduced while the corresponding tower structure (12) can be made stiffer and lighter. Manufacturing and transport costs are reduced. Further, the stiffening elements (5-9) may be formed with an aerodynamic outer cross section as for example a drop profile or wing profile in order to reduce air drag and audible noise.

Wind turbine rotor and wind turbine

A wind turbine comprising: a shaft (2); a plurality of blade arrangements (8), each of which is rotatable around the shaft and has a blade (7), said blade arrangements and blades forming a blade rotor which is rotatable around the shaft; at least first and second bearing arrangements (6) spaced axially along the shaft, said blade rotor being connected to said first and second bearing arrangements; and a direct drive generator comprising a stator (10), which is rotationally fixed to the shaft, and a generator rotor (9) having a rim; wherein the first and second bearing arrangements each transmit radial forces from the blade rotor to the shaft, and at least one of the first and second bearing arrangements transmits bending moments to the shaft, each of the blade arrangements being connected to a point at or adjacent the rim of the generator rotor so as to transmit torque generated by the blade arrangement directly thereto, and wherein the generator rotor (9) is within the blade rotor.

Wind turbine rotor and method of mounting

A wind turbine rotor assembly comprises: a rotor support; a rotor which is rotatably mounted to the rotor support; and a base support; wherein the rotor support and base support are provided with engagement means which allow said rotor support and base support to engage with each other so that when the rotor support and base support are moved together a hinged connection is formed between the rotor support and base support, which hinged connection allows the rotor support to rotate relative to the base support during installation or decommissioning of the rotor.

Rotor blade connection

Rotor blade for a wind turbine

Improved coating composition for wind turbine blades

The present application discloses a wind turbine blade having on the outer surface thereof a polyurethane-based coating including a polyurethane binder prepared from olyol(s) having an average functionality of 2.0 and < 8,0; at least 50 % (vv/w) of the polyols have aliphatic polyester segments included therein and have a Mw of 300 -3,000 g/mol; and polyisocyanate(s) having an average functionality of < 3.0; at least 50 % (w/vv) of the polyisocyanate(s) are selected from : (i) polyisocyanates having aliphatic polyester segments included therein, and having a molecular weight of 500-3,000 g/mol and a functionality of 2.0 and < 3.0; (ii) polyisocyanates of the allophanate type having a Mw of 250-2,000 g/mol and a functionality of 2,0 and < 3.0; and (iii) polyisocyanates of the uretdion type having a Mw of 250-2,000 g/mol and a functionality of 2.0 and < 3,0, The application also discloses corresponding coating compositions and a method for coating a substrate.

Rotor turning device for wind turbine generator and rotor turning method

A rotor turning device for a wind turbine generator which can be used without having to modify 5 the existing wind turbine generator, and a method for turning the rotor. A rotor turning device comprises, on the inner periphery, a first member acting as a fixing member for fixing to a coupling hub, and on the outer periphery, a second member acting as an operating 10 member to which operational force for rotating a rotation axis of the wind turbine generator is inputted. A pair of the first members embracingly fixes to the coupling hub of a coupling, while the second member attaches to the pair of first members to form a handle 15 like shape. - 38 - ...

Lubrication of a pitch angle adjusting device of a rotor blade of a windmill

Ventilator and blade therefor

A roof-mounted ventilator comprising a plurality of blades is disclosed. Each blade comprises front and back blade faces and leading and trailing edges. When the ventilator is viewed in side profile, the blades are positioned and configured such that a line of sight into the interior of the ventilator is substantially restricted or obstructed. Restricting or obstructing the line of sight into the ventilator can reduce or prevent various particles, such as water droplets, debris, dust and light, from entering the ventilator interior. For example, rain is thereby forced to strike a face of the blades, thus preventing direct access into the ventilator interior. The blade itself may include additional features, such as a lip that extends along the length of the leading edge, to further prevent particles from entering the ventilator interior, or to redirect the particles away from the ventilator interior in a controlled manner.

Wind powered apparatus having counter rotating blades

Diffuser augmented wind turbines

Diffuser-augmented wind turbines are described. In an embodiment a wind turbine diffuser comprises a first diffuser ring arranged to form a turbine rotor cowling, the diffuser being fixed to and rotatable with the turbine rotor about the horizontal axis of the wind turbine. The first diffuser ring may have one or more dynamic, aero-elastic, vortex entrainment devices attached to a trailing edge of the diffuser. The first diffuser ring may comprise one or more slot gaps arranged within its body, each slot gap creating a channel between the interior and exterior surfaces of the first diffuser ring. In some embodiments the diffuser may optionally further comprise one or more further diffuser rings, the one or more further diffuser rings being static rings (e.g. non-rotatable about the horizontal axis)or dynamic diffuser rings (e.g. rotatable around the horizontal axis).

The multi-unit rotor blade system integrated wind turbine

IMPROVEMENTS IN OR RELATING TO COMPOSITE STRUCTURES

A split core for a composite structure is described. The split core includes a first core layer, a second core layer, and a functional interlayer disposed between the first and second core layers. The first core layer separates the functional interlayer from a functional layer of the composite structure and/or from an outer surface of the composite structure. The thickness of the first core layer is substantially uniform across the composite structure and the distance between the functional interlayer and the functional layer and/or the outer surface of the composite structure is substantially constant across the composite structure.

WIND TURBINE WITH BLADE TIP ENCLOSURE

The present invention is a wind turbine having a set of curved blades mounted on a central rotatable hub. An enclosure surrounds and is attached to the tips of the blades. The enclosure is arranged to rotate with the hub and the blades. The blades have a fixed pitch such that a pitch angle of each of the blades at the tip end is from 50 degrees and 75 degrees to a rotational (central) axis of the hub. A pitch angle of each of the blades at a hub end is defined by a product of a ratio, of a hub radius divided by a turbine radius, multiplied by a pitch angle at the tip. The blade is provided with a compound curve that causes the blade to fall away from an angle of apparent wind (the angle of the wind seen by the moving blade) impinging upon the blade at a wind entry location of the blade. The turbine is further provided with an apparatus that controls speed of rotation of the turbine so that the angle of the apparent wind to the blades can be adjusted relative to the pitch angle of the blades ...

WIND TURBINE WITH YAW TRIMMING

The disclosure teaches a wind turbine. The wind turbine includes a rotatable hub and at least one airfoil blade mounted at a root portion thereof on the rotatable hub and pivotally movable about the root portion into and out of the wind in response to vertical wind velocity gradients acting on the blade. The wind turbine is characterized by the blade being connected to the hub in such manner that pivoting movement into and out of the wind by the blade adjusts blade pitch relative to the direction of the wind to a degree sufficient to counteract any tendency of the turbine to precess away from an optimum yaw heading thereby minimizing yaw imbalance of the hub due to the influence of the vertical wind velocity gradients on the blade.

SPAR CAP AND PRODUCTION METHOD

The invention relates to a spar cap for a rotor blade of a wind energy plant, having a longitudinal extension from a first end to a second end, a transverse extension orthogonal to the longitudinal extension and a thickness orthogonal to the longitudinal extension and the transverse extension. The invention further relates to a method for producing the aforementioned spar cap. The spar cap has a longitudinal extension from a first end to a second end, a transverse extension orthogonal to the longitudinal extension and a thickness orthogonal to the longitudinal extension and the transverse extension. The spar cap comprises at least two layers of a first fiber composite material and at least one layer of a second fiber composite material, the first fiber composite material having another matrix material and/or other fibers than the second fiber composite material, wherein the second fiber composite material is disposed in a portion adjacent to the second end in the direction of the thickness ...

SPAR CAP AND PRODUCTION METHOD

The invention relates to a spar cap for a rotor blade of a wind energy plant, having a longitudinal extension from a first end to a second end, a transverse extension orthogonal to the longitudinal extension and a thickness orthogonal to the longitudinal extension and the transverse extension. The invention further relates to a method for producing the aforementioned spar cap. The spar cap has a longitudinal extension from a first end to a second end, a transverse extension orthogonal to the longitudinal extension and a thickness orthogonal to the longitudinal extension and the transverse extension. The spar cap comprises at least two layers of a first fiber composite material and at least one layer of a second fiber composite material, the first fiber composite material having another matrix material and/or other fibers than the second fiber composite material, wherein the second fiber composite material is disposed in a portion adjacent to the second end in the direction of the thickness ...

ROTOR BLADE FOR A WIND POWER PLANT

The invention relates to a rotor blade for a wind power plant and a wind power plant. The aim of the invention is to create a profiled rotor blade or wind power plant that exhibits superior performance as opposed to the past. Said aim is achieved by a rotor blade, the cross section of which has a maximum thickness at a location lying within a range of about 15 to 40 percent relative to the profile depth, preferably within a range of about 23 to 28 percent, the maximum profile thickness ranging between about 20 and 45 percent, preferably between about 32 and 36 percent.

ANTI-ICING WIND POWER BLADE AND BLADE DEICING AND HEATING METHOD

An anti-icing wind power blade and a blade deicing and heating method. The anti-icing wind power blade comprises a wind turbine blade. An anti-icing heating device is disposed in the wind turbine blade. The anti-icing heating device consists of an air heating system and an electric heating system in combination. The two systems are independent from each other without mutual interference and separately or simultaneously heat the wind turbine blade. The air heating system and the electric heating system are both disposed in the wind turbine blade. The air heating system comprises an air heating control cabinet (5) and an air heating device. The electric heating system comprises an electric heating control cabinet (17) and an electric heating element (13). The wind turbine blade is divided into a leading edge and a trailing edge by a leading edge web (15) and a trailing edge web (11). The air heating device is disposed in the trailing edge, the electric heating element (13) is disposed on ...

SYSTEM FOR RECOVERING AND CONVERTING KINETIC ENERGY AND POTENTIAL ENERGY INTO ELECTRICAL ENERGY FOR AN AIRCRAFT

L'invention concerne un système de génération d'énergie électrique (20) pour aéronef (10) comprenant un carénage aérodynamique (21) renfermant au moins une turbine (22) logée dans la partie avant (21a) du carénage (21) et un générateur d'énergie électrique (23) relié à ladite turbine. La partie avant (21a) du carénage (21) est équipée de moyens d'admission d'air (26) qui sont mobiles entre une position d'ouverture dans laquelle la turbine (22) est exposée au flux d'air externe au carénage (21) et une position de fermeture dans laquelle la turbine (22) est masquée dans le carénage (21). L'invention permet de réduire la traînée aérodynamique habituellement créée par des tourbillons présents en bout d'aile dans le cas d'une voilure classique à bords nets durant les phases de décollage, montée et croisière et de récupérer lors des phases de descente les énergies cinétique et potentielle accumulées par l'aéronef au cours des phases de montée et de croisière.

POWER GENERATING APPARATUS

Power generating apparatus (10) comprises a housing (14) and a wind turbine (12) within the housing. The wind turbine comprises a plurality of rotatable turbine blades (66). The housing has a forward region (20) extending forwardly of the wind turbine, the forward region defining an inlet opening (22) for air, and a rearward region (24) extending rearwardly of the wind turbine, the rearward region defining an outlet opening for air.

METHOD FOR PRODUCING A COMPOSITE STRUCTURAL PART, COMPOSITE STRUCTURAL PART AND WIND POWER PLANT

The invention relates to a production method and a composite structural part, particularly for a wind power plant, the composite structural part having a plurality of at least two-component composite shaped parts, wherein a first component is formed from a shape-providing core material and a second component is formed as part of a joining layer. According to the invention, the shape-providing core material is formed, following the shape of a prism, as a prismatic body having a polygonal base surface, wherein a polygon of the base surface has a base and an angle of 30°-60° to the base, and a plurality of prismatic bodies are joined. At legs contacting one another, a functional orientation of the joining layers is formed, such that the joining layer runs at an angle of 30°-60° to a base surface of the prisms.

POWER MACHINE ROTOR BLADE WITH BULGES

The stability of power generation efficiency against variation of fluid speed and direction can be improved. The disclosed rotor 1 for a wind or water power machine includes a hub 10, supported by a main shaft, and blades 20, each having a root end 21 connected to the hub. In a projection plane perpendicular to a rotational center axis O of the rotor, a leading edge 31 of the blade has leading edge bulge portions 36 and 37 protruding forward in the rotor rotational direction only at two different locations in the rotor radial direction.

A TURNING DEVICE FOR TURNING A FIRST MOULD PART FOR MANUFACTURING A WIND TURBINE BLADE PART RELATIVE TO A SECOND MOULD PART

The device (10) comprises a base part (12), a rotational part (14) movable relative to the base part about a rotation axis (16), a first linear actuator (18) having a first end (19) and a second end (20), the first end being attached to the base part, the second end being attached to the rotational part at a first anchor point arranged on a first turning axis (21), and a second linear actuator (22a) having a first end (23) and a second end (24), the first end being attached to the base part, the second end being attached to the rotational part at a second anchor point arranged on a second turning axis (25). The first turning axis is arranged at a first distance from the rotation axis, and the second turning axis is arranged at a second distance from the rotation axis, the second distance being different from the first distance.

SEGMENTED WIND TURBINE BLADES WITH TRUSS CONNECTION REGIONS, AND ASSOCIATED SYSTEMS AND METHODS

Segmented wind turbine blades with truss connection regions, and associated systems and methods are disclosed. A wind turbine system in accordance with a particular embodiment includes a wind turbine with a first segment having a first position along the longitudinal axis and having a first internal load-bearing structure for which non-truss structure elements carry at least 90% of the shear loads in the first segment. The blade further includes a second segment having a second position along the longitudinal axis and having a second internal load-bearing structure for which non- truss structure elements carry at least 90% of the shear loads in the first segment. A connection region between the first and second segments includes an internal load- bearing truss structure connected between the first internal load-bearing structure and the second internal load-bearing structure.

DOOR LOCK

The invention relates to a device for controlling the locking of the opening of a door (12) preferably located between the stationary part (15) and the rotary part (16) of a wind power plant (22). According to the invention, means (3) are provided for immobilising or stopping the rotary part (16), and the door (12) between the rotary part (16) and the stationary part (15) of the wind power plant comprises a lock (11, 17) that allows unlocking and then if required opening the door (12) when the immobilising or stopping means (3) have immobilised or stopped the rotary part (16) of the wind power plant.

APPARATUS FOR ROTATING THE NACELLE OF A WIND TURBINE

The invention relates to an apparatus for the controlled rotation of a machine pod (102) of a wind power plant, having a control device (400) and having a plurality of azimuth motors (128), wherein the apparatus furthermore has a plurality, amounting to n in number, of yaw brakes (130, B, B1 - B8), wherein the control device (400) is designed for standstill operation and for tracking operation, wherein in standstill operation, the n yaw brakes (130, B, B1 - B8) are actuated so as to impart a standstill holding moment M1 for holding the machine pod (102), wherein here, the n yaw brakes (130, B, B1 - B8) impart in each case a substantially equal first holding moment, and wherein in tracking operation, the n yaw brakes (130, B, B1 - B8) are actuated so as to impart a tracking holding moment M2, wherein the tracking holding moment M2 is lower than the standstill holding moment M1 (M1 > M2) and is also lower than the overall moment generated by the azimuth motors (128) in tracking operation, ...

WIND TURBINE ROTOR DESIGNING METHOD, WIND TURBINE ROTOR DESIGN SUPPORT DEVICE, WIND TURBINE ROTOR DESIGN SUPPORT PROGRAM AND WIND TURBINE ROTOR

There is provided a designing method of a wind turbine rotor which includes a rotor head, a bearing provided on the rotor head and a wind turbine blade attached to the bearing. The wind turbine rotor designing method includes: providing operation environment data indicative of an operation environment of a wind turbine generator including the wind turbine rotor and design data of the wind turbine blade; calculating a position of a center of mass of the wind turbine blade in each position in a lengthwise direction of the wind turbine blade in the operation environment from the operation environment data and the design data; and calculating an evaluation value which is a value depending on an integral value obtained by integrating a product of the calculated position of the center of mass of the blade and a mass per unit length at each position in a lengthwise direction of the wind turbine blade from a blade root portion of the wind turbine blade to a blade tip end of the same.

WIND TURBINE ROTOR BLADE AND METHOD FOR INSTALLING A WIND TURBINE ROTOR BLADE

The invention relates to a wind turbine rotor blade (100), comprising a rotor blade root (110), a rotor blade tip (120), a rotor blade front edge (160), a rotor blade rear edge (170), a pressure side (140), and a suction side (130). The rotor blade (100) further comprises a rotor blade outer shell (180) having at least one opening (190) in the pressure side and/or the suction side for accommodating handling means (200) for installing or removing the rotor blade (100). The rotor blade (100) further comprises at least one fastening unit (300) for fastening the handling means (200) inserted through the at least one opening. The fastening unit (300) is arranged in the interior (150) of the rotor blade outer shell (100) between the pressure side (140) and the suction side (130).

ROTOR BLADE FOR A WIND POWER PLANT

The invention relates to a rotor blade (1) for a wind power plant, comprising a rotor blade root (4) for the connection of the rotor blade (1) to a rotor hub and a rotor blade tip arranged on the side facing away from the rotor blade root (4), as well as a wind power plant comprising such rotor blades. A relative profile thickness (2), which is defined as a ratio of profile thickness (2) to profile depth (3), has a local maximum in a centre region (6) between the rotor blade root and rotor blade tip.

A DOOR LOCK FOR A WIND POWER PLANT

The invention relates to a device for controlling the locking of the opening of a door (12) preferably located between the stationary part (15) and the rotary part (16) of a wind power plant (22). According to the invention, means (3) are provided for immobilising or stopping the rotary part (16), and the door (12) between the rotary part (16) and the stationary part (15) of the wind power plant comprises a lock (11, 17) that allows unlocking and then if required opening the door (12) when the immobilising or stopping means (3) have immobiised or stopped the rotary part (16) of the wind power plant.

ROTOR BLADE FOR A WIND POWER PLANT

The invention relates to a rotor blade (1) for a wind power plant, comprising a rotor blade root (4) for the connection of the rotor blade (1) to a rotor hub and a rotor blade tip arranged on the side facing away from the rotor blade root (4), as well as a wind power plant comprising such rotor blades. A relative profile thickness (2), which is defined as a ratio of profile thickness (2) to profile depth (3), has a local maximum in a centre region (6) between the rotor blade root and rotor blade tip.

СПОСОБ И СОЛНЕЧНАЯ ВЕТРОСТАНЦИЯ ДЛЯ ПРОИЗВОДСТВА ЭЛЕКТРИЧЕСКОЙ ЭНЕРГИИ

Изобретение относится к области получения электрической энергии посредством искусственного создания набегающего потока воздуха на энергетический модуль (турбину) с использованием солнечных батарей. Энергетический модуль закручивает, сжимает воздушный поток и направляет его на рабочую поверхность безлопастного ротора. Ротор выполнен так, что создается реактивный эффект на его рабочих поверхностях, что улучшает характеристики турбины. В предлагаемом способе получения энергии используется кинетическая и потенциальная энергия воздушного потока, а также момент инерции установки и солнечные батареи. Эффективность способа достигает 50%, при этом экономится традиционное топливо и снижаются выбросы CO2 в атмосферу.

For assembling wind turbine gear box unit and the main shaft assembly frame

Boundary layer fins for wind turbine blade

TURBOMACHINE DRIVE LIQUID OR GASEOUS AND HIGH EFFICIENCY

BLADE TO REDUCE THE MOVEMENTS IN TRAIL OF THE AFORESAID THE BLADE AND A METHOD FOR REDUCING SUCH A MOVEMENT IN TRAIL.

OFFSHORE WIND ENERGY INSTALLATION ON FLOATING SUPPORT HAVING A COMBINATION OF DAMPING MEANS

SYSTEM FOR RECOVERING AND CONVERTING KINETIC AND POTENTIAL ENERGY INTO ELECTRICAL ENERGY FOR AIRCRAFT

L'invention concerne un système de génération d'énergie électrique (20) pour aéronef (10) comprenant un carénage aérodynamique (21) renfermant au moins une turbine (22) logée dans la partie avant (21a) du carénage (21) et un générateur d'énergie électrique (23) relié à ladite turbine. La partie avant (21a) du carénage (21) est équipée de moyens d'admission d'air (26) qui sont mobiles entre une position d'ouverture dans laquelle la turbine (22) est exposée au flux d'air externe au carénage (21) et une position de fermeture dans laquelle la turbine (22) est masquée dans le carénage (21). L'invention permet de réduire la traînée aérodynamique habituellement créée par des tourbillons présents en bout d'aile dans le cas d'une voilure classique à bords nets durant les phases de décollage, montée et croisière et de récupérer lors des phases de descente les énergies cinétique et potentielle accumulées par l'aéronef au cours des phases de montée et de croisière.

Rotor blade for wind driven machine - has long, narrow high speed blade and wide counterbalance blade assisting starting of rotor

DISPOSITIF RECUPERATEUR DE L'ENERGIE CINETIQUE D'UN FLUIDE EN ECOULEMENT

DISPOSITIF DESTINE A CAPTER L'ENERGIE CINETIQUE D'UN FLUIDE EN ECOULEMENT, CECI EN VUE DE TRANSFORMER CETTE ENERGIE RECUEILLIE, SOUS FORME DE TOUTE AUTRE ENERGIE D'UN TYPE DOMESTIQUE, ELECTRICITE PAR EXEMPLE. L'INVENTION PRESENTE A POUR BUT DE REALISER UN ENSEMBLE CAPTEUR, OU LE DISPOSITIF DESTINE A TRANSFORMER L'ENERGIE MECANIQUE RECUEILLIE; ALTERNATEUR OU DYNAMO DANS LE CAS DE PRODUCTION ELECTRIQUE, SOIT DIRECTEMENT ENTRAINE PAR UN SECOND DISPOSITIF CAPTEUR, TOURNANT PLUS RAPIDEMENT QUE LE PREMIER DU FAIT D'UN ECOULEMENT DE FLUIDE, DE VITESSE PLUS ELEVEE. CET ECOULEMENT ETAIT OBTENU PAR LE DEPLACEMENT DU PREMIER CAPTEUR DANS LE FLUIDE AMBIANT APPAREMMENT IMMOBILE. LA PRESENTE INVENTION S'APPLIQUE PRINCIPALEMENT A LA CONSTRUCTION DE CAPTEURS EOLIENS. TOUTEFOIS UNE VARIANTE INTERESSANTE POURRAIT ETRE APPLIQUEE A LA CAPTATION DES COURANTS MARINS PAR EXEMPLE.

APPARATUS FOR WIND TUNNEL OF TURBINE UNIT FOR SOLAR HEAT CHIMNEY POWER PLANT

The present invention relates to a solar heat chimney generator, and more specifically, to a solar heat chimney generator which allows a quick flow of air passing through a turbine to be discharged to increase an output of the turbine and increase power production efficiency. The solar heat chimney generator comprises a heat collection unit, a chimney unit, a rigid unit, a tunnel unit, and a power production unit. The heat collection unit has a bottom unit and a roof unit separated upwards from the bottom unit and heats air therein by solar heat. The chimney unit is extended upwards from a center of the heat collection unit and forms a hollow space therein. The rigid unit is extended to a lower side of the chimney unit and disposed of in the heat collection unit. The tunnel unit comprises an air jet tunnel disposed on a center of the rigid unit and a plurality of wind tunnels disposed on a circumference of the air jet tunnel and provided with a turbine therein. The power production unit ...

이중 성분 접착액 혼합 및 주입 시스템

... 본 발명은 이중 성분 접착액 혼합 및 주입 시스템에 관한 것으로, 상기 이중 성분 접착액 혼합 및 주입 시스템은 주성분 공급 수단, 경화제 공급 수단, 다이나믹 믹싱 헤드, 접착액 주입 수단 및 제어 수단을 포함하고; 각각 다이나믹 믹싱 헤드에 주성분과 경화제를 주입하도록 주성분 공급 수단과 경화제 공급 수단은 모두 다이나믹 믹싱 헤드와 연통되고, 다이나믹 믹싱 헤드와 접착액 주입 수단은 이동 가능하게 연통되며; 제어 수단은 각각 주성분 공급 수단, 경화제 공급 수단, 접착액 주입 수단과 전기적으로 연결되고, 제어 수단은 주성분 공급 수단, 경화제 공급 수단과 접착액 주입 수단의 작동을 제어하고, 주성분 공급 수단, 경화제 공급 수단과 접착액 주입 수단의 작동 상태 정보를 검출한다. 이는 주성분과 경화제의 혼합을 정확하게 제어할 수 있어 혼합 비율의 정확도를 확보하는 동시에 시스템 자체의 작동 상태를 자동적으로 검출하여 접착액 혼합 및 주입 작동의 정상적인 진행을 확보한다.

부유식 풍력 터빈의 틸트 댐핑

... 본 발명은 부유식 풍력 터빈에서의 음 댐핑 효과를 제거 또는 실질적으로 저감시키기 위한 방법 및 장치에 관한 것이다. 동작점 신호가 수신되고, 상기 수신된 동작점 신호에 기초하여 게인 스케줄링 파라미터가 결정된다. 그 다음에는 입력 신호가 게인 스케줄링 파라미터에 의하여 게인 스케줄링되고, 적어도 상기 게인 스케줄링된 입력 신호에 기초해서 부유식 풍력 터빈에서의 음 댐핑 효과가 제거 또는 실질적으로 저감될 수 있다.

SPACER FOR ROLLING BEARING, NOTABLY USED IN A WIND TURBINE

BLADE FOR WIND POWER GENERATOR, MANUFACTURING METHOD AND DEFECT INSPECTION METHOD THEREOF

The present invention relates to a blade for a wind power generator, a manufacturing method, and a defect inspection method thereof. The blade includes a main body of the blade which generates a lift force to rotate when a wind force is applied, and a root part which connects a hub and the main body. The root part comprises: a light emitting layer which receives power and emits surface light, and inspects a generation of defects by checking a light intensity penetrating the blade. As such, the defects generated in manufacturing the blade is able to be inspected. COPYRIGHT KIPO 2016 ...

AFTERIMAGE DISPLAY APPARATUS FOR DISPLAYING BICYCLE SPEED USING AEROGENERATOR

The present invention provides a speed display apparatus for a bicycle, which can display a bicycle speed using wind power generation without using a battery. A bicycle speed display forms an afterimage display by arranging an LED array to a rotor of an aerogenerator. Therefore, the bicycle speed display is shown with a number, a figure, or the like for a bicycle driver to easily recognize the bicycle speed display. The present invention is designed for rotation of a blade for wind power generation to be used with operation of the afterimage display. COPYRIGHT KIPO 2017 ...

turbina eólica do tipo corredor rápido

AEOLIAN TURBINE WITH SHUNTING LINE ADJUSTMENT

Magnet block adjusting module, rotor assembly, and fluid electricity generation device

Wind turbine and lightning protection unit for a wind turbine

A wind turbine is provided, having a nacelle (104), and having a rotor that has at least two rotor blades (108). The rotor blades (108) each have a rotor blade root (108a), at least one metallic conductor (220), for conducting a lightning strike, and connected thereto, provided in the region of a rotor blade root, have a conducting ring (230). In addition, a lightning protection unit (240) is fastened to the non-rotating part of the nacelle (104) in such a manner that the lightning protection unit (240) lies on the ring (230). The lightning protection (240) unit has two rollers (241) and a lightning rod (242), a free end of the lightning rod (242) being separated from an outer end of the rollers (241) by a distance that defines a spark gap.

Wind-following horizontal-axis wind turbine

The purpose of the present invention is to provide a wind-following horizontal-axis wind turbine which can turn the front surface of a rotor upwind, reacting sensitively to changes in the direction of even light winds. A horizontal-axis rotor is mounted on the back portion of a rotor shaft which projects horizontally backwards from the inside of a wind turbine casing mounted on a support column via an attachment unit. A rotating portion is integrally attached to attachment body above a fixed portion thereof which is fixed at bottom to the support column so as to allow the rotating portion to rotate together with the wind turbine casing with a bearing interposed therebetween. The top end of a transmission shaft which projects from the support column upwards through the rotating portion is linked by a transmission means to the front end of the rotor shaft, and, through support arms projecting rearwards from the back portion of the outer periphery of the wind turbine casing, a rudder is disposed ...

WIND ENERGY UNIT COMPRISING A HOLLOW SHAFT FOR ROTOR HUB AND GENERATOR

A WIND POWER PLANT

IMPROVEMENT TO AN OSCILLATING PROPELLER FOR A TWO-BLADE AEROGENERATOR

The invention relates to an oscillating propeller (1) of a two-blade (10, 11) aerogenerator, said blades being symmetrically mounted in relation to the centre of a hub (12) of a rotor. The aerogenerator is fixed at the top of a supporting mast and the bottom of the mast is anchored to the ground. The hub (12) is mounted in such a way that it rotates with the driving axle (ω) of the aerogenerator and is fixed to the driving axle (ω) in an articulated manner by means of an articulation element (123) in order to drive an electric generator. The articulation element (123) of the articulation axle (Δ) perpendicular to the driving axle (ω) forms an angle (δ) with the normal (N) to the axis (γ) of the blades (10, 11). Intercalated elements are provided between the articulation element (123) and the hub (12) in circular openings (125) formed on the lateral surface of the hub (12) according to the articulation axle (Δ).

THE SURFACE STRUCTURE OF WINDMILL ROTORS FOR SPECIAL CIRCUMSTANCES

The present invention relates to an improvement of windmill rotors - more specifically rotors that have been designed to be used in cold and wet climate, such as northern sea areas. This can be achieved by incorporating an electrically conducting layer on or in the surface of a windmill blade. The same coating can also be used to achieve a stealth property.

Wind wheel and electricity generator using same

A wind-driven power source comprises a propeller-driven rotor structure and a stator structure carrying clusters of copper-wire wound ferromagnetic cores as voltage generators. The cores are arranged in pairs spaced apart by hard rubber rollers which engage the inside surface of a load ring forming part of the rotor structure. The overall rotor structure comprises the large diameter load ring, a smaller diameter root ring and a plurality of aerodynamic blades extending radially outwardly from the root ring and secured either by saddle blocks or integral bonding to the load ring. The load ring may be aluminum or plastic. Permanent magnets are arranged around the load ring to interact with the voltage generator structures to produce three-phase electricity.

Wind turbine

A wind turbine includes a nacelle that houses a dynamo and a vane wheel coupled to an end of the dynamo. The nacelle is movably mounted to a post. The nacelle has a body forming a circumferentially extending curved slot that has a front portion forming a reducing section and a rear portion forming an expanding section. The vane wheel has a hub at a center thereof and including a plurality of blades radially extending therefrom. Each blade has an end forming a down wash. With the curved design of the nacelle body, the rising angle of airflow exiting the nacelle is improved and with the down wash, the occurrence of tip vortex is suppressed, whereby the utilization efficiency of wind energy in the wind generation operations is improved.

WIND TURBINE, WIND FARM AND METHOD FOR GENERATING POWER

Exemplary embodiments concern a wind turbine having a horizontal axis and at least one rotor blade, which in regular operation at a wind speed of more than 4 m/s always comprises a static thrust coefficient cS of less than 0.8. The wind turbine is designed for a design turbulence intensity, corresponding to the definition of the characteristic value of turbulence intensity I15 at 15 m/s according to IEC 61400-1, Edition 2, of more than 18% and less than 26%. It may thus be possible to achieve an improved utilisation of space.

Systems, devices and methods for improving efficiency of wind power generation systems

According to some aspects of the invention, a turbine, such as a wind turbine, is provided that includes one or more fluid (e.g., air) flow components for inducing a secondary fluid flow that emanates from a rearward location on the turbine to minimize wake effects. According to some aspects of the invention, arrays of turbines, such as in wind farms, are provided that comprise a plurality such turbines. According to further aspects of the invention, methods are provided for minimizing wake effects in a wind turbine and for improving the efficiency of a wind farms.

Конусная полая спиральная турбина для преобразования энергии

1. Преобразующий текучую среду элемент (100) для преобразования энергии потока текучей среды во вращательную энергию, причем преобразующий текучую среду элемент включает по меньшей мере два открытых трубчатых канала (110), изогнутых вокруг оси вращения (160), отличающийся тем, что по меньшей мере один из упомянутых трубчатых каналов спирально огибает вокруг упомянутую ось вращения, и каждый из упомянутых каналов включает камеру (120), имеющую соответственное входное отверстие (130) и соответственное выходное отверстие (140); при этом площадь поперечного сечения входного отверстия по меньшей мере одного из упомянутых трубчатых каналов больше, чем площадь поперечного сечения выходного отверстия упомянутого канала; причем упомянутый преобразующий текучую среду элемент выполнен с возможностью регулировки частоты вращения путем возмущения потока текучей среды.2. Преобразующий текучую среду элемент по п.1, отличающийся тем, что диаметр по меньшей мере одного из упомянутых трубчатых каналов изменяется по его длине.3. Преобразующий текучую среду элемент по п.1, отличающийся тем, что упомянутая текучая среда выбрана, по меньшей мере, из ветра или воды.4. Преобразующий текучую среду элемент по п.1, отличающийся тем, что по меньшей мере один из упомянутых трубчатых каналов изготовлен из материала, выбираемого из группы, состоящей из металла, волокон, дерева, полимерного материала, стекла, ткани, сплавов и их сочетаний.5. Преобразующий текучую среду элемент (100) для преобразования энергии потока текучей среды во вращательную энергию, причем преобразующий текучую среду элемент включает по меньшей мере два открытых трубчатых канала (1

Парусное ветроколесо

Полезная модель относится к ветроэнергетике, в частности к многолопастным тихоходным парусным ветродвигателям, и может быть использована в приводе ветросиловых агрегатов, например, для подъема воды из колодцев и скважин. Сущность полезной модели заключается в том, что парусное ветроколесо, содержащее соосные, разнесенные на расстояние ступицы с лонжеронами и парусные лопасти четырехугольной формы, которые крепятся боковыми кромками к лонжеронам разноименных ступиц, имеет лонжероны, выполненные из гибкого материала для увода парусов из-под штормового ветра. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 188 643 U1 (51) МПК F03D 1/06 (2006.01) F03D 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F03D 1/0608 (2018.08); F03D 7/0208 (2018.08) (21) (22) Заявка: 2017143751, 13.12.2017 (24) Дата начала отсчета срока действия патента: 13.12.2017 (72) Автор(ы): Левшин Аркадий Генрихович (RU) Дата регистрации: 18.04.2019 (56) Список документов, цитированных в отчете о поиске: RU 70318 U1, 20.01.2008. RU 59748 U1, 27.12.2006. RU 2016101748 A, 25.07.2017. RU 2391555 C1, 10.06.2010. US 1516472 A1, 18.11.1924. (45) Опубликовано: 18.04.2019 Бюл. № 11 R U 1 8 8 6 4 3 (54) ПАРУСНОЕ ВЕТРОКОЛЕСО (57) Реферат: Полезная модель относится к ветроэнергетике, в частности к многолопастным тихоходным парусным ветродвигателям, и может быть использована в приводе ветросиловых агрегатов, например, для подъема воды из колодцев и скважин. Сущность полезной модели заключается в том, что парусное ветроколесо, содержащее Стр.: 1 соосные, разнесенные на расстояние ступицы с лонжеронами и парусные лопасти четырехугольной формы, которые крепятся боковыми кромками к лонжеронам разноименных ступиц, имеет лонжероны, выполненные из гибкого материала для увода парусов из-под штормового ветра. U 1 U 1 Адрес для переписки: 236022, г. Калининград, Советский пр., 36Б, кв. 10, Левшину Аркадию Генриховичу 1 8 8 6 4 3 Приоритет(ы): (22) Дата подачи заявки: ...

Wind turbine blade with variable trailing edge

The present invention relates to a wind turbine blade for a rotor of a wind turbine having a substantially horizontal rotor shaft. The blade may comprise a profiled contour comprising a pressure side and a suction side as well as a leading edge and a trailing edge, a chord extending between the leading edge and the trailing edge, and the profiled contour generating a lift when being impacted by an incident airflow. In a cross section of the wind turbine blade perpendicular to a lengthwise direction of the wind turbine blade, a suction side point is defined on the suction side at the trailing edge of the blade, and a pressure side point is defined on the pressure side at the trailing edge of the blade. The suction side point is movable in relation to the pressure side point, and the blade is further provided with a displacement device configured to displace the pressure side point and the suction side point so that a distance between the suction side point and the pressure side point can be varied. The present invention further relates to a wind turbine including such a wind turbine blade and to a method of operating a wind turbine including such a wind turbine blade.

Wind turbine blade shear web with spring flanges

A wind turbine blade has upper and lower shell members with a respective spar cap configured on an internal face of the shell members. A shear web extends between the spar caps along a longitudinal length of the blade. A connection assembly is configured between the transverse ends of the shear web and the spar caps. The connection assembly includes spring flange members that extend distally beyond the transverse ends of the shear web at opposite sides of the shear web so as to define a laterally extending float section. A bond paste layer is between the float sections and the spar cap and between the transverse end of the shear web and the spar cap as a result of compression of the spring flanges against the spar cap.

Cable-stayed rotor for wind and water turbines

A rotor system for a fluid flow turbine includes a hub assembly which is mounted on a shaft coupled with a power transmitting device and a plurality of rotor blades. Each rotor blade includes an inner blade section and an outer blade section, wherein the inner blade section is supported by and extends outwardly from the hub assembly and the outer blade section extends outward from the inner blade section. Each of the rotor blades includes a collar to accommodate the inner blade section and/or the outer blade section such that the inner blade section and the outer blade section are rotatable for pitch control. Pitch motors are located at the hub assembly and dependently or independently pitch the inner blade sections and the outer blade sections.

Blade module, a modular rotor blade and a method for assembling a modular rotor blade

A method for assembling a modular wind turbine rotor blade, includes aligning a first blade module and a second blade module such that a first receptacle of the first blade module and a second receptacle of the second blade module are co-axial; and forming a detachable mechanical connection between a first inlay of the first blade module and a second inlay of the second blade module using a threaded fastener that extends into the first receptacle and into the second receptacle.

Method of strengthening a wind turbine blade and the strengthened blade

A method of repairing a wind turbine blade is described. The blade comprises a shell body comprising a fibre-reinforced polymer material. The blade is strengthened by use of a UV curable prepreg material having a first side and a second side. The method comprises the steps of: a) applying the UV curable, fibre-reinforced prepreg material to an area of application on an outer surface or an inner surface of the wind turbine blade with the first side of the prepreg material facing the area of application, and b) exposing the prepreg material to UV radiation for a predetermined amount of time so as to allow the prepreg to cure.

Load mitigation device for wind turbine blades

The present invention includes a rotor blade ( 20 ) having a blade body ( 30 ) with a leading edge ( 26 ) and a trailing edge ( 28 ) and opposed first and second surfaces ( 34, 36 ) extending there between defining an airfoil shape ( 32 ) in cross-section. A passageway ( 42 ) extends through the blade body ( 30 ) between the first and second surfaces ( 34, 36 ). A flexible member ( 60 ) is sealed over one end ( 50 ) of the passageway ( 42 ). Advantageously, the flexible member ( 60 ) is passively responsive to changes in a differential pressure between the first and second surfaces ( 34, 36 ) to move between a deactivated position ( 62 ) and an activated position ( 64 ) where the flexible member ( 60 ) extends away from the airfoil shape ( 32 ) to function as a load mitigation device ( 40 ) for the wind turbine rotor blade ( 20 ).

Method, Assembly and System for Mounting Wind Turbine Blades to a Wind Turbine Hub

An assembly for mounting wind turbine blades to a wind turbine hub is disclosed. Such assembly includes a blade retaining arrangement to accommodate at least two blades and an interface to a lifting device for lifting the assembly to the hub. Furthermore, a system and a method for the same purpose are disclosed.

Improved coating composition for wind turbine blades

The present application discloses a wind turbine blade having on the outer surface thereof a polyurethane-based coating including a polyurethane binder prepared from polyol(s) having an average functionality of ≧2.0 and <8.0; at least 50% (w/w) of the polyols have aliphatic polyester segments included therein and have a Mw of 300-3,000 g/mol; and polyisocyanate(s) having an average functionality of <3.0; at least 50% (w/w) of the polyisocyanate(s) are selected from: (i) polyisocyanates having aliphatic polyester segments included therein, and having a molecular weight of 500-3,000 g/mol and a functionality of ≧2.0 and <3.0; (ii) polyisocyanates of the allophanate type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0; and (iii) polyisocyanates of the uretdion type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0. The application also discloses corresponding coating compositions and a method for coating a substrate.

Blade of a Wind Turbine

A blade of a wind turbine is provided. The blade includes at least one vortex-generator, which is positioned at the blade-surface. The vortex-generator is constructed and arranged in a way that it contributes to the aerodynamic characteristics of the blade. The vortex-generator includes a platform and an extension-part. The blade also includes a recess, which is constructed and arranged to receive at least a part of the platform of the vortex-generator. The platform is fixed at least partly within the recess.

Lightning conduction system for wind turbine blades with carbon fiber laminates

Lightning rod system for wind turbine blades formed by various connections set up on carbon fiber laminates ( 2 ) on the blade ( 1 ), equipotentializing the surface of the flanges ( 4 ) of the beam ( 10 ) through the deviations of a primary cable ( 6 ) with the respective auxiliary cables ( 5 ), carried out with the use of a device ( 12 ) whose terminals are connected between the ends of the cited auxiliary cable ( 5 ). The use, given the elevated inductance of device ( 12 ) mounted on the connection between the carbon laminates ( 2 ) and the conductor cable or primary cable ( 6 ), is to reduce the passage of current across the carbon laminate and favor the conduction through the metal cable.

Wind turbine rotor blade with passively modified trailing edge component

A wind turbine rotor blade includes a root portion and an airfoil portion extending from the root portion and defined by a leading edge and a trailing edge. The airfoil portion further includes a main foil section and a trailing edge section that is pivotally connected to the main foil section along a span-wise extending hinge line. A passive torsion element is coupled between the main foil section and the trailing edge section. The torsion element is biased to a neutral position wherein the trailing edge section is pivoted chord-wise to a low wind speed position relative to the main foil section. The trailing edge section is self-actuating from the low wind speed position to an increased wind speed position relative to the main foil section against as a function of the biasing force of the torsion element and wind speed over the airfoil section.

Device for assembling sections of wind-turbine blades and method for linking sections of wind-turbine blades

A device for assembling sections of wind-turbine blades provided with casings, including at least one tie including a first portion and a second portion, the first portion being a portion for assembly with a casing of a first section and the second portion being a portion for mounting with a complementary tie supported by a casing of a second section, wherein the first portion includes at least one composite/metal shear link provided with a continuous fitting element on at least one surface of the casing which receives one end of the aformentioned surface of the casing, provided with attachment pins passing through the fitting and the end of the surface. According to a preferred embodiment, the composite/metal link has at least double shear and is additionally provided with a back-fitting element, the end of the aforementioned surface of the casing being received between the fitting and the back fitting, the attachment pins passing through the fitting, the end of the surface and the back fitting, the link also being provided with a means for attaching the back fitting to the fitting.

Partitioned shell mold for wind turbine blades, its manufacturing method, and blade production method employing this mold

The invention describes a mold for non-metallic wind turbine blade shells that comprises two semi-molds, upper and lower, hinged with a pivoting system and equipped with stiffening ribs that hold a system of air conduits on it, and which is partitioned transversely in at least two parts ( 1 A, 2 A) and ( 1 B, 2 B) that are joined together with some fastening ribs ( 13 A, 13 A′, 13 B, 13 B′). The invention likewise describes the manufacturing method for this mold and the method to obtain a wind turbine blade by replacing an already constituted part of the mold to obtain a geometry differentiated from the original in one of its parts, and to manufacture another family of wind turbine blades.

Rotor for a wind power generator

A rotor according to a preferred embodiment of the invention has at least one blade arranged at a hub of the rotor, wherein the blade has a curvature between its leading edge and its trailing edge which curvature has a first convex surface and an opposite second concave surface, wherein the first surface is to be arranged against the direction of the wind striking the blades. The convex profile of the first surface and the concave profile of the opposite second surface are spaced by the thickness of the blade which is preferably constant. The hub is arranged at the rotational axis.

Wind turbine blade, wind turbine generator with the same, and design method of wind turbine blade

Provided is a wind turbine blade realizing enhancement of performance by a winglet provided at a blade tip. The wind turbine blade includes the winglet formed by bending a tip side thereof toward a pressure side of the blade relative to an adjacent portion adjacent on a blade root side, and a CANT angle defined by a blade axial line of the winglet relative to a radial extrapolation line of a blade axial line of the adjacent portion is set to be 15° or more and 55° or less. The winglet includes a tip end located on a tip side thereof, having a substantially linear blade axial line, and a bent portion located on a base end side of the winglet and bent relative to the adjacent portion. This bent portion is bent gradually so as to satisfy the predetermined CANT angle.

Compound-type wind power generator

A compound-type wind power generator capable of increasing the size of Magnus wind turbine by disposing a propeller wind turbine with the Magnus wind turbine and increasing the amount of electric power generation. The compound-type wind power generator includes a propeller wind turbine; a Magnus wind turbine with perpendicular center shafts and a bevel gear mechanism; generators driven by the horizontal rotation shaft of the Magnus wind turbine and the horizontal rotation shaft of the propeller wind turbine; and connection shafts for fixing the outer end of the perpendicular center shaft of each Magnus wind turbine to an adjacent propeller blade. The horizontal rotation shafts of the propeller wind turbine and of the Magnus wind turbine have a double shaft structure in which one of the horizontal rotation shafts is formed by a cylindrical portion and the other one is axially inserted through the cylindrical portion with a play therebetween.

Method for manufacture of an infused spar cap using a low viscosity matrix material

Embodiments of the present application generally provide for wind turbine blade spar caps comprising composite materials prepared using a low viscosity resin system and a high density fabric and methods for their manufacture. In particular embodiment, the low viscosity resin system has a viscosity in the range of about 1 to about 100 centipoises at a temperature in the range of about 0° C. to about 125° C. during the preparation of the composite material. By using low viscosity resin systems, composite materials have been prepared having a fiber volume fraction of greater than about 65% and a composite modulus of greater than 48000 MPa.

Rotor system

Embodiments of the invention relate to a rotor system, particularly for use in a wind turbine generator system. A support ( 11 ) is provided having first and second rotating members ( 12, 13 ) coupled thereto, the rotating members being able to rotate about a common axis. One or more flexible blades ( 14, 15 ) having at least two ends are provided, one end being mounted on the first rotating member and another end being mounted on the second rotating member, so that they may rotate about the common axis. Actuating means are provided, being arranged to cause the ends of each blade to move closer together by movement of at least one of the rotating members along the common axis. The first and second rotating members are arranged to rotate relative to each other, said rotation allowing the flexible blades to coil around an axis.

Plasma Actuated Vortex Generators

A plasma-actuated vortex generator arrangement includes a plurality of spaced-apart vortex generators, and a plasma actuator distributed amongst the plurality of vortex generators.

Wind power generation system and control method for the same

A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42 , an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60 , and a control unit 110 controlling the discharge power supply 65 . The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42 , and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.

Systems and methods for assembling a wind turbine with a pitch assembly

A rotor blade for a rotor of a wind turbine is provided. The rotor blade comprises a blade root portion configured to transfer a load acting on the rotor blade to the rotor through a blade coupling assembly of the rotor, wherein the blade coupling assembly comprises a rotatable hub and a pitch bearing, and at least one reinforcement element disposed in the blade root portion of the rotor blade for stiffening the blade coupling assembly of the rotor.

Turbine blades and systems with forward blowing slots

A blade for use in a wind turbine comprises a pressure side and suction side meeting at a trailing edge and leading edge. The pressure side and suction side provide lift to the turbine blade upon the flow of air from the leading edge to the trailing edge and over the pressure side and suction side. The blade includes one or more openings at the suction side, in some cases between the leading edge and the trailing edge. The one or more openings are configured to provide a pressurized fluid towards the leading edge of the blade, in some cases at an angle between about 0° and 70° with respect to an axis oriented from a centerline of the blade toward the leading edge.

Wind turbine blade having an outer surface with improved properties

A wind turbine blade including an outer surface that serves as an aerodynamic surface when the blade is subjected for an air stream. A resin matrix made of a laminate of at least one ply includes the outer surface. The outer ply includes a nano structure embedded therein such that the filaments of the nano structure in the ply have essentially the same angular orientation relative a plane of the outer surface.

Vortex generators

A vortex generator, or an array of vortex generators, for attenuating flow separation during flow of fluid over a surface. Vortex generators include a base with a forward end and a leading edge extending outward and rearward from the forward end to an outward end. The leading edge includes a first angular discontinuity at a height H 1 above the base, and a second angular discontinuity at a height H 2 above the base. The vortex generator(s) are configured for generating, adjacent a surface, at least two (2) vortices V 1 and V 2 in a fluid, and turning the outermost generated vortice toward the surface over which the fluid is passing.

Stator for supersonic compressor

A stator. The stator may be used in a supersonic compressor that utilizes a rotor to deliver a gas at supersonic conditions to the stator. The stator includes a plurality of aerodynamic ducts that have converging and diverging portions, for deceleration of gas to subsonic conditions and then for expansion of subsonic gas, to change kinetic energy of the gas to static pressure. The aerodynamic ducts include structures for changing the effective contraction ratio to enable starting even when the aerodynamic ducts are designed for high pressure ratios, and structures for boundary layer control.

Wind turbine blade and method of protecting the same

A turbine blade for a wind turbine includes a leading edge, a trailing edge and a recess located within the leading edge. The blade further includes a protective layer having an inner side and outer side, the inner side is sized and orientated to locate within the recess to facilitate withstanding impact forces applied by an object.

WIND TURBINE WITH A CENTRIFUGAL FORCE DRIVEN ADJUSTABLE PITCH ANGLE AND CABLES RETAINING BLADES IN A HUB

A wind turbine includes rotor blades pivotably mounted in a gondola such that the pitch of the blades is adjustable, and pitch adjustment mounted coaxially and pivotably on the rotor axle such that the pitch adjustment are rotatable relative to that axle. The gondola is furthermore connected via torsion positioning to the axle, such that it can rotate relative to the pitch adjustment to adjust the pitch of the rotor blades. The wind turbine may also include a cable for each rotor blade, which are each with one end connected to the blade and with their opposite end to the rotor axle, such that the blades are supported by the cables against movement in the radially outward direction. 1. A wind turbine , preferably of the down wind type , including an electrical generator , comprising:a nacelle;a mast, for pivotably supporting the nacelle;a rotor which is pivotably mounted in the nacelle such that the rotor is driven by the wind in a rotational direction about a rotor rotational axis of the rotor, which rotor comprises:a rotor axle for driving the generator, which coincides with the rotational axis of the rotor, and which is pivotably supported in the nacelle;a gondola;two or more rotor blades which extend in a radial direction relative to the rotational axis of the rotor, and which are pivotably mounted in the gondola such that the pitch of the rotor blades is adjustable;pitch adjustment devices for cooperating with the pivotably mounted rotor blades, which pitch adjustment devices are mounted coaxially and pivotably on the rotor axle such that the pitch adjustment devices are rotatable about the rotational axis of the rotor and relative to the rotor axle, to adjust the pitch of the rotor blades by rotating the pitch adjustment devices relative to the gondola and about the rotational axis of the rotor; two or more centrifugal bodies which are each moveably connected to the rotor, preferably to the rotor axle, for movement between a first position near the rotational ...

Rotor blade for a wind turbine

The invention relates to a rotor blade for a wind turbine, comprising a root of the rotor blade and a rotor blade aerofoil. The object of providing a rotor blade which can be easily and inexpensively produced even when of great lengths and which, what is more, enables a system for protection against lightning to be incorporated in a simplified way is achieved, for a rotor blade of the generic kind, by having the rotor blade consist of at least partly a fibre-reinforced plastics composite having metal inserts embedded in the matrix of the fibre-reinforced plastics composite.

Wind turbine blade, wind turbine generator equipped with wind turbine blade and method of designing wind turbine blade

It is intended to provide a wind turbine blade with superior aerodynamic characteristics and rigidity, a wind turbine generator equipped with the wind turbine blade, and a method of designing the wind turbine blade. The wind turbine blade 1 is provided with a blade tip part 2, a blade root part 4 connected to a hub 112, and an airfoil part 6 disposed between the blade tip part 2 and the blade root part 4. The airfoil part 6 includes a flatback airfoil 10 with a blunt trailing edge 8 at least in an area in a longitudinal direction of the wind turbine blade 1 where a blade thickness ratio X is 40% to 50%. X indicates a ratio of a maximum thickness t MAX to a chord length L C . In the area where the blade thickness ratio X is 40% to 50%, the flatback airfoil has a trailing edge thickness ratio Y which is 5% to Y H %, Y indicating a ratio of a trailing edge thickness t TE to the maximum thickness t MAX and Y H has a relationship of Y H =1.5X−30 with the blade thickness ratio X.

ROTOR BLADE FORM FOR PRODUCING A ROTOR BLADE OF A WIND POWER PLANT

The present invention concerns a rotor blade mold for producing a rotor blade of a wind power installation or a part thereof comprising a heatable mold portion having a shaping surface for shaping the rotor blade surface and wherein the heatable mold portion has at least two heating portions and each heating portion includes at least one electrical resistance heating element arranged at or beneath the shaping surface and a supply unit for supplying the at least one resistance heating element with electrical heating current. 1. A rotor blade mold for producing a rotor blade member of a wind power installation comprising:a heatable mold portion having a shaping surface for shaping the rotor blade member surface;wherein the heatable mold portion has at least two heating portions and each heating portion includes at least one electrical resistance heating element arranged at or beneath the shaping surface and a supply unit configured to supply the at least one resistance heating element with electrical heating current; andwherein each supply unit includes a control unit configured to control the heating current.2. The rotor blade mold according to claim 1 , wherein each supply unit has a switch cabinet and accommodated in the switch cabinet is the respective control unit configured to control the heating current.3. The rotor blade mold according to claim 2 , wherein at least part of the control unit mounted to a removable outside wall portion of the switch cabinet claim 2 , and the control unit provides electrical connections to said outside wall portion in the form of releasable connections to simplify replacement of said outside wall portion including the elements mounted thereon by another outside wall portion.4. The rotor blade mold according to claim 1 , further comprising a central control coupled to each supply unit.5. The rotor blade mold according to claim 1 , wherein the at least one resistance heating element includes at least one of a flat heating element ...

BLADE AND LAMINATED PROTECTIVE SHEET FOR THE BLADE

A scratch-resistant blade such as an FRP wind turbine blade and a blade protective sheet which can be easily repaired when scratched. A blade is provided with a laminated protective sheet bonded to at least part of a leading edge of an FRP blade body of said blade, wherein the laminated protective sheet comprises an adhesive layer, a intermediate fabric layer and a durable surface layer, in that order from the blade body. 1. A blade comprising a laminated protective sheet being bonded to at least part of a leading edge of an FRP blade body of said blade , wherein said laminated protective sheet comprises an adhesive layer , a intermediate fabric layer and a durable surface layer , in that order from the blade body side.2. The blade according to claim 1 , wherein said leading edge of said blade body has a circular arc shape in a cross section orthogonal to a longitudinal direction of said blade body claim 1 ,wherein a distal end of said leading edge, which is farthest from a rotational center of said blade body, comprises a tapered distal end, having a narrowing thickness in cross section orthogonal to said longitudinal direction of said blade body and having a narrowing width in said cross section from said leading edge to a trailing edge of said blade body, andwherein said laminated protective sheet is bonded to said tapered distal end of said leading edge of said blade body over two sides thereof that extend toward said trailing edge from a generating line of said arc-shaped cross section.3. The blade according to claim 2 , wherein a distal end of said laminated protective sheet that is farthest from said rotational center of said blade body is in the shape of a curved surface which is convex toward said distal end of said laminated protective sheet and which extends continuously over said two sides of said blade body.4. The blade according to claim 2 , wherein a distal end of said laminated protective sheet that is farthest from said rotational center of said ...

Rotor blade for a wind turbine and methods of manufacturing the same

In one aspect, a method for manufacturing a rotor blade for a wind turbine is disclosed. The method may generally include assembling a blade blank comprising a shear member and a volume of core material and removing material from the blade blank to form a body having a pressure side and a suction side extending between a leading edge and a trailing edge. The shear member may have a first end disposed adjacent to the pressure side and a second end disposed adjacent to the suction side. In addition, the method may include positioning a skin around an outer perimeter of the body.

LIGHTWEIGHT COMPOSITE TRUSS WIND TURBINE BLADE

A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in parallel spaced relation from one another and individually molded with perimeters defining individual areas of curvature for the finished blade assembly. The truss support structure is covered with a lightweight fiberglass or hardened fabric skin attached to and fitted on respective rib panel edges forming an airfoil structure. 120.-. (canceled)21. A wind turbine blade , comprising:a plurality of spaced-apart ribs, with individual ribs having a shape corresponding generally to a cross-section of an airfoil;a spine connected to the spaced-apart ribs, the spine extending in a longitudinal direction, with the ribs being positioned generally perpendicular to the spine; anda skin carried by and enclosing the spine and the ribs, the skin being tensioned around the ribs.22. The wind turbine blade of wherein the spine includes at least one longitudinally-extending spar.23. The wind turbine blade of wherein the spine includes a plurality of longitudinally-extending spars claim 21 , and wherein individual spars extend proximate to peripheral edges of individual spaced-apart ribs.24. The wind turbine blade of wherein the skin includes a fabric fitted over a varying curvature profile presented by the spaced-apart ribs.25. The wind turbine blade of wherein the skin is heat-shrunk around the ribs.26. The wind turbine blade of claim 21 , further comprising truss-members extending diagonally between neighboring ribs.27. The wind turbine blade of wherein the skin includes multiple skin panels joined to form a generally continuous skin structure.28. The wind turbine blade of wherein the skin supports structures positioned within it.29. The wind turbine blade of wherein structures include at least one of the ribs.30. The wind ...

ROTOR BLADE

A rotor blade for a wind turbine includes a longitudinal rotor blade base body. A stiffening structure is disposed within the base body. The stiffening structure is divided in at least two, axially adjacently disposed stiffening structure segments, wherein at least one first stiffening structure segment is disposed with a different position or orientation relative to at least one further stiffening structure segment or relative to the longitudinal axis of the base body. 1. A rotor blade for a wind turbine , comprising:a longitudinal rotor blade base body,a stiffening structure disposed within the base body,wherein the stiffening structure is divided in at least two, axially adjacently disposed stiffening structure segments, andwherein at least one first stiffening structure segment is disposed with a different position or orientation relative to at least one further stiffening structure segment or relative to the longitudinal axis of the base body.2. The rotor blade according to claim 1 , wherein the at least one first stiffening structure segment is tilted or twisted relative to the longitudinal axis of the base body.3. The rotor blade according to claim 1 , wherein the at least one first stiffening structure segment is coaxially disposed within the longitudinal axis of the base body claim 1 , wherein it is tilted or twisted relative to the at least one further stiffening structure segment.4. The rotor blade according to claim 1 , wherein the at least one first stiffening structure segment is internally tilted or twisted relative to its own longitudinal axis.5. The rotor blade according to claim 2 , wherein claim 2 , if two or more first stiffening structure segments are tilted or twisted relative to the longitudinal axis of the base body claim 2 , the tilting or twisting angles of the respective stiffening structure segments are equal or different.6. The rotor blade according to claim 3 , wherein claim 3 , if two or more stiffening structure segments are coaxially ...

WIND TURBINE BLADE FOR A ROTOR OF A WIND TURBINE

A wind turbine blade comprises a profiled contour having a pressure side and a suction side, a leading edge and a trailing edge with a chord extending between the leading edge and the trailing edge. The profiled contour generating a lift when being impacted by an incident airflow is formed by a hollow shell body. The hollow shell body is formed by at least a first shell body part and a second shell body part, which are mutually connected at least at the trailing edge and/or the leading edge. An edge stiffener is arranged within the hollow shell body at a first part of the edges, a first surface part of the edge stiffener being connected to an inner side of the first shell body part, and a second surface part of the edge stiffener being connected to an inner side of the second shell body part. 1. A wind turbine blade for a rotor of a wind turbine having a substantially horizontal rotor shaft , the rotor comprising a hub from which the blade extends substantially in a radial direction when mounted to the hub , wherein the blade comprises: a profiled contour comprising a pressure side and a suction side , a leading edge and a trailing edge with a chord extending between the leading edge and the trailing edge , the profiled contour generating a lift when being impacted by an incident airflow , where-in said profiled contour is formed by a hollow shell body , wherein the hollow shell body is formed by at least a first shell body part and a second shell body part , which are mutually connected at least at the trailing edge and/or the leading edge , characterised in that an elongated , longitudinally extending and prefabricated edge stiffener is arranged within the hollow shell body at a first part of the edges , wherein a first longitudinal surface part of the edge stiffener is connected to an inner side of the first shell body part , and a second longitudinal surface part of the edge stiffener is connected to an inner side of the second shell body part , and that the ...

WIND TURBINE ROTOR AND WIND TURBINE

A wind turbine comprising: a shaft (); a plurality of blade arrangements (), each of which is rotatable around the shaft and has a blade (), said blade arrangements and blades forming a blade rotor which is rotatable around the shaft; at least first and second bearing arrangements () spaced axially along the shaft, said blade rotor being connected to said first and second bearing arrangements; and a direct drive generator comprising a stator (), which is rotationally fixed to the shaft, and a generator rotor () having a rim; wherein the first and second bearing arrangements each transmit radial forces from the blade rotor to the shaft, and at least one of the first and second bearing arrangements transmits bending moments to the shaft, each of the blade arrangements being connected to a point at or adjacent the rim of the generator rotor so as to transmit torque generated by the blade arrangement directly thereto, and wherein the generator rotor () is within the blade rotor. 141.-. (canceled)42. A wind turbine comprisinga shaft;a plurality of blade arrangements, each of which is rotatable around the shaft and has a blade;at least first and second bearing arrangements spaced axially along the shaft; anda direct drive generator comprising a stator, which is rotationally fixed to the shaft, and a generator rotor having a rim connected to the first and second bearing arrangements,each of the first and second bearing arrangements transmitting radial forces from the generator rotor to the shaft and at least one of the first and second bearing arrangments separately transmitting bending moments to the shaft,each of the blade arrangements being connected to a point at or adjacent the rim so as to transmit torque generated by the blade arrangement directly to the rim, andeach of the blade arrangements having first and second legs which straddle the generator.43. A wind turbine as claimed in claim 42 , in which the stator is disposed between the first and second bearing ...

Notch-Reduced Composite Joint

A wind turbine blade comprising a profiled hollow contour, at least one reinforcing beam () placed between two shell body parts (), the beam comprising a first beam flange () and an opposing second beam flange (), a beam body () connected to the first beam flange () by a first transition area () and connected to the second beam flange () by a second transition area (). The beam body comprises a beam core (). The beam core () comprises a first outer core surface () and an opposite second outer core surface (). The beam body further comprises a web () arranged on the outer core surfaces. The flanges () and the web () are made from a fibre-reinforced polymer. The transition areas () comprise notch-reducing mean formed of rounded corners of the beam core (). 138. A wind turbine blade for a rotor of a wind turbine () comprising a profiled contour () formed by a hollow shell body made of fibre-reinforced resin , wherein the hollow shell body comprises{'b': 13', '14', '15, 'a first shell body part () and a second shell body part () being interconnected and at least one prefabricated longitudinally extending beam () having an I-shaped cross-section and being formed of fibre-reinforced resin comprising a number of fibre layers,'}{'b': 15', '16', '16', '17, 'i': a', 'b, 'said beam () comprising a first beam flange () and a second beam flange () and a beam body () extending between the flanges,'}{'b': 17', '22', '24', '24', '52', '53', '50', '16', '16, 'i': a', 'b', 'a', 'b, 'said beam body () comprising a beam core () having a first () and a second () mutually interspaced outer lateral faces and a first () and a second () mutually interspaced end faces, each of the lateral faces being covered by a web () of fibre-reinforced polymer, the first end face being covered by fibre-reinforced polymer of the first beam flange () and the second end face being covered by fibre-reinforced polymer of the second beam flange (),'}{'b': 17', '16', '32', '16', '32, 'i': a', 'a', 'b', 'b, 'the ...

Wind Turbine Blade with Narrow Shoulder and Relatively Thick Airfoil Profiles

A blade () for a rotor of a wind turbine having a profiled contour divided into: a root region (), an airfoil region (), and a transition region () between the root region () and the airfoil region (). A shoulder () is located at the boundary between the transition region () and the airfoil region (). The blade's profiled contour comprises a local relative thickness defined as the local ratio between a maximum profile thickness (t) and the chord length (c). The ratio between the shoulder width (W) and the blade length (L) being less than or equal to 0.075, and the relative thickness (t/c) in a blade length interval of 0-0.8L is at least 22%. 110281081614. A blade () for a rotor of a wind turbine () having a substantially horizontal rotor shaft , said rotor comprising a hub () , from which the blade () extends substantially in a radial direction when mounted to the hub () , the blade having a longitudinal direction (r) with a tip end () and a root end () and a transverse direction , the blade further comprising:{'b': 18', '20, 'a profiled contour including a pressure side and a suction side, as well as a leading edge () and a trailing edge () with a chord having a chord length (c) extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift, wherein the profiled contour is divided into{'b': '30', 'a root region () having a substantially circular or elliptical profile closest to the hub,'}{'b': '34', 'an airfoil region () having a lift-generating profile furthest away from the hub, and'}{'b': 32', '30', '34', '32, 'a transition region () between the root region () and the airfoil region (), the transition region () having a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift-generating profile of the airfoil region, and with'}{'b': 40', '32', '34, 'a shoulder () having a shoulder width (W) and located at the boundary between the transition region () ...

INVENTION RELATING TO ROTOR BLADES, IN PARTICULAR FOR WIND TURBINE GENERATORS

A rotor blade is provided, in particular for wind turbine generators including a means for the modification of the camber, wherein the modification of the camber is realized by means of elements passively coupled to one another, i.e. without external energy supply (apart from the energy contained in the airflow surrounding the rotor blade). One of the elements is therefore arranged at the leading and the trailing edge of the airfoil of the rotor blade, respectively. The coupling of the elements, the stiffness of the airfoil and the strength of the damping are hereby arranged in a manner suitable to be modified. 1. Rotor blade comprising an aerodynamic airfoil with a leading and a trailing edge , wherein the airfoil is arranged for the formation of a lift due to pressure differences between a suction and pressure side of the airfoil in case of air flow over the rotor blade , wherein the rotor blade comprises a means for the modification of the camber , wherein these means are arranged , on the one hand , on the leading edge and , on the other , on the trailing edge , and are implemented in a manner passively coupled to each other , i.e. not via an external energy supply (apart from the streaming air).2. Rotor blade according to claim 1 , wherein the means consist claim 1 , respectively claim 1 , of one element arranged in an elastic and/or rotatably mounted manner on the leading edge and one on the trailing edge.3. Rotor blade according to claim 1 , wherein the rotor blade is arranged in a manner enabling the modification of its stiffness and/or the strength of the coupling and/or the coupling comprises a modifiable damping.4. Wind turbine generator with at least one rotor blade according to .5. Wind turbine generator according to claim 4 , wherein it comprises a regulation or control which—depending on the measured flow conditions—modifies the amount or the direction of the stiffness of the rotor blade and/or the strength of the coupling claim 4 , which will once ...

FLUID INTERFACE DEVICE AS WELL AS APPARATI AND METHODS INCLUDING SAME

A fluid interface device, such as an airfoil assembly, can include a device structure and at least one movable band oriented such that the band moves in a direction of fluid flow. The at least one movable band can be supported on the device structure such that an outer surface of the movable band is exposed along the device structure and is capable of movement relative thereto such that a relative velocity can be maintained between the outer surface and the device structure. The fluid interface device can also include an edge extension disposed along the leading edge of the device structure. An airplane, a wind turbine and a method are also included. 1. An airfoil assembly for use in a gaseous fluid , said airfoil assembly comprising:an airfoil structure having a longitudinal length and including a first longitudinal edge, a second longitudinal edge spaced laterally from said first longitudinal edge, a first side extending longitudinally along at least a portion of said length between said first and second longitudinal edges, and a second side extending longitudinally along at least a portion of said length between said first and second longitudinal edges and generally opposite said first side; and, a movable band having a width and supported on said airfoil structure such that at least a portion of said movable band is exposed along at least one of said first and second sides of said airfoil structure; and,', 'an edge extension including a longitudinal edge and supported along said first longitudinal edge of said airfoil structure in approximate alignment with at least a portion of said movable band such that relative movement between said airfoil assembly and a gaseous fluid can result in a gaseous fluid flow across said airfoil assembly with said longitudinal edge of said edge extension functioning as a leading edge of at least a portion of said airfoil assembly., 'a fluid interface device operatively associated with said airfoil structure, said fluid interface ...

Blade connection for a rotor blade of a wind turbine

A blade connection for a rotor blade of a wind turbine having a plurality of receptacles which extend in the longitudinal direction of the rotor blade and can each receive a longitudinal bolt and are in contact with a component having an inner thread for the longitudinal bolt. The rotor blade is manufactured from two materials, at least in the region of the blade connection, wherein a first material is a composite material, and a second material is a composite material provided with at least one reinforcement layer made of metal and/or ceramic. The receptacles are composed of the first material and the second material is bonded to the first material.

Aerogenerator blade and manufacturing method thereof

Aerogenerator blade and method of manufacturing thereof, the aerogenerator blade comprising an intrados shell, an extrados shell and a structural beam, the structural beam comprising a root spar, a transitional spar and a box spar, wherein the root spar has a substantially circular cross section configured to support the connection of the blade to the aerogenerator hub; the transitional spar tapers from the root spar towards the box spar; and the box spar tapers towards the blade tip; and wherein the aerogenerator blade is characterized by comprising: a first section of the structural beam including at least a root spar portion, a transitional spar portion and a box spar portion, the portions forming a first integral structural beam section; a second section including at least the counterparts of the root spar portion, the transitional spar portion and the box spar portion, said counterpart portions forming a second integral structural beam section; and wherein the first section of the structural beam is joined with the second section of the structural beam, forming the structural beam; and the intrados shell and the extrados shell are assembled on the structural beam.

WIND TURBINE BLADE

A wind turbine blade comprising an aerodynamic fairing supported along at least a portion of its axial length by a spar (). The spar comprises at least two spar segments () joined end-to-end at an interface (), each spar segment comprising a shear web () with a spar cap () on each side. The outer face () of each spar cap tapers inwardly towards the interface such that its depth is reduced towards the interface creating a recess on each side of the interface formed by the tapered faces of adjacent spar caps. A respective connection piece () is sized to fit into each recess. Each connection piece () is sized to fit into each recess. Each connection piece () being fixed to the tapered faces of adjacent spar caps to form a double scarf joint. 1. A wind turbine blade comprising an aerodynamic fairing supported along at least a portion of its axial length by a spar , the spar comprising at least two spar segments joined end-to-end at an interface , each spar segment comprising a shear web with a spar cap on each side; wherein the outer face of each spar cap tapers inwardly towards the interface such that its depth is reduced towards the interface creating a recess on each side of the interface formed by the tapered faces of adjacent spar caps; and a respective connection piece sized to fit into each recess , each connection piece being fixed to the tapered faces of adjacent spar caps to form a double scarf joint.2. A blade according to claim 1 , wherein the end of each shear web is substantially perpendicular to the axial direction such that the ends of the shear webs support one another.3. A blade according to claim 1 , wherein there is no double scarf joint between the shear webs.4. A blade according to claim 1 , wherein the connection piece is bonded to the tapered faces of adjacent spar caps.5. A blade according to claim 4 , wherein the connection piece is a pre-cured component.6. A blade according to claim 1 , wherein the connection piece is formed in situ from a ...

ROTOR BLADE ELEMENT AND METHOD FOR IMPROVING THE EFFICIENCY OF A WIND TURBINE ROTOR BLADE

A rotor blade element and a method for improving the efficiency of a wind turbine rotor blade are provided. The wind turbine rotor blade element is adapted for mounting on the wind turbine rotor blade. The wind turbine rotor blade has a trailing edge, a suction side and a pressure side. The blade element has a trailing edge, a first surface and a second surface. The first surface forms a pressure side surface portion. The second surface has a suction side surface portion and a contact surface. 115-. (canceled)16. A rotor blade element to be mounted on a wind turbine rotor blade , comprising:a trailing edge;a first surface comprising a pressure side surface portion; anda second surface comprising a suction side surface portion and a contact surface.17. The rotor blade element as claimed in claim 16 , further comprising a trailing edge flange located between the contact surface and the suction side surface portion for attaching the rotor blade element to a trailing edge of the wind turbine rotor blade.18. The rotor blade element as claimed in claim 16 , wherein the first surface comprises a curvature and/or the suction side surface portion comprises a curvature and/or the contact surface comprises a curvature.19. The rotor blade element as claimed in claim 16 , wherein the rotor blade element comprises elastic material.20. The rotor blade element as claimed in claim 16 , wherein the rotor blade element comprises plastic material and/or thermoplastic material and/or a composite structure.210410. The rotor blade element as claimed in claim 16 , wherein the rotor blade element has a length of between . m and . m.22. The rotor blade element as claimed in claim 16 , wherein the rotor blade element comprises a double-sided adhesive tape for fixing the rotor blade element to the rotor blade.23. The rotor blade element as claimed in claim 16 , wherein the rotor blade element comprises a serrated trailing edge.24. The rotor blade element as claimed in claim 16 , wherein the ...

A WIND TURBINE BLADE

A wind turbine blade is provided. The wind turbine blade has multiple vortex generators, each projecting from a surface of the blade and having a predetermined length. The vortex generators are arranged on a strip. The width of the strip is several times larger than the length of a vortex generator. 1. A wind turbine blade , comprising:a strip; anda plurality of vortex generators arranged on the strip,wherein each of the vortex generators projects from a surface of the blade and comprises a predetermined length, andwherein a width of the strip is larger than the length of the each of the vortex generators.2. The wind turbine blade according to claim 1 , wherein the width of the strip is 2 to 10 times larger than the length of the each of the vortex generators.3. The wind turbine blade according to claim 1 , wherein an adhesive is applied on a lower surface of the strip.4. The wind turbine blade according to claim 3 , wherein the lower surface of the strip is provided with a countersink groove along a longitudinal direction of the strip.5. The wind turbine blade according to claim 4 , wherein a double-sided adhesive tape is applied on the countersink groove.6. The wind turbine blade according to claim 1 , wherein a first end of the strip is provided with a predetermined shape and a second end of the strip is provided with a mating shape.7. The wind turbine blade according to claim 6 , wherein the first end and the second end of the strip are shaped as tongue and groove.8. The wind turbine blade according to claim 1 , wherein the strip is provided on a rope. This application claims priority of European Patent Office application No. 11190276.3 EP filed Nov. 23, 2011, which is incorporated by reference herein in its entirety.The present application relates to a wind turbine blade, comprising multiple vortex generators, each projecting from a surface of the blade and having a predetermined length, whereby the vortex generators are arranged on a strip.Wind turbines are ...

Intake assemblies for wind-energy conversion systems and methods

An intake assembly for a wind-energy conversion system has a substantially vertical converging nozzle, an object extending into the nozzle, and a converging flow passage between the object and the nozzle. For some embodiments, the object may be another nozzle. There may be vanes in one or both nozzles in further embodiments. The object may be configured to move in yet other embodiments.

DIRECT DRIVE WIND TURBINE, TRANSPORT SYSTEM AND METHOD OF CONSTRUCTION OF A DIRECT DRIVE WIND TURBINE

A direct drive wind turbine with a nacelle and a rotor including a hub, the nacelle and the hub connected in an interface region. The wind turbine includes a transport system for transporting hydraulic and/or pneumatic fluid from the nacelle into the hub. The transport system includes a rotary unit through which the fluid passes. A part of the rotary unit rotates in operation together with the hub. The rotary unit is positioned in the hub at a position distanced from the interface region facing away from the nacelle. Further disclosed are a transport system and a method of construction of such a direct drive wind turbine. 111-. (canceled)12. A direct drive wind turbine , comprising:a rotor comprising a hub and a plurality of blades,a nacelle connected to the hub in an interface region;a transport system for transporting fluid from the nacelle into the hub,wherein the transport system comprising a rotary unit positioned in the hub at a distance from the interface region in a direction away from the nacelle, a first part of the rotary unit is rotatable together with the hub and a second part of the rotary unit is stationary, the fluid is transported through the rotary unit, andwherein the fluid is hydraulic fluid and/or pneumatic fluid.13. The direct drive wind turbine according to claim 12 ,wherein the rotary unit is directly connected to a hydraulic and/or pneumatic pitch system in the hub.14. The direct drive wind turbine according to claim 12 , further comprisinga pump situated in the nacelle, andwherein the pump in operation provides for pressure of the fluid in the transport system.15. The direct drive wind turbine according to claim 12 ,wherein the transport system comprises a pipe system leading from the interface region into the hub to the rotary unit, andwherein the pipe system is fixed within the hub such that the pipe is not rotated during operation of the rotary unit.16. The direct drive wind turbine according to claim 15 ,wherein the pipe system is fixed ...

Wind Turbine Rotor

Wind turbine rotor comprising a hub, a plurality of blades and at least one pitch system for rotating a blade substantially along its longitudinal axis, the pitch system comprising a motor, a drive pinion, a gear arranged to mesh with the drive pinion and a pitch bearing, the pitch bearing comprising an outer bearing ring connected to the hub, an inner bearing ring connected to a blade and, between these two bearing rings, one or more rows of rolling elements which allow both bearing rings to rotate relative to each other, wherein the inner bearing ring has an inner side, and wherein a reinforcement disc is radially fixed to the inner side of the inner bearing ring.

Fluid interface device and method

A fluid interface device, such as an airfoil assembly, can include a device structure and at least one moveable band oriented such that the band moves in a direction of fluid flow. The at least one moveable band can be supported on the device structure such that an outer surface of the moveable band is exposed along the device structure and is capable of movement relative thereto such that a relative velocity can be maintained between the outer surface and the device structure. The fluid interface device can have a cross section that includes first and second boundary layer collision points disposed along one side of the device structure with at least one of said first and second boundary layer collision points formed by the endless band. An airplane, a wind turbine and a method are also included.

QUIET WIND TURBINE BLADE

Noise produced by the blades of a wind turbine electric generator is reduced by creating randomly varied serrations on the trailing edge of the blade, thereby creating vortices of varying size, energy, and distance from the trailing edge. This configuration creates vortices that tend to cancel one another while avoiding the creation of adjacent, mutually reinforcing vortices. 1. A blade of a wind turbine comprising:an airfoil, said airfoil having a substantially straight trailing edge and a plurality of essentially planar serrations located at said trailing edge;each of said plurality of serrations comprising two or more substantially straight edges such that edges of adjacent serrations meet to form a trough comprising an angle, said trough defining a trough length as being the shortest distance between said trough and the nearest point of said trailing edge;each of said plurality of serrations terminating at a point comprising an angle, each said point being at the farthest downwind extremity of each said serration, each said point defining a serration length comprising a line extending from said point to the nearest point of said trailing edge;said trough lengths being substantially equal and said serration length lines being substantially equal and bisecting said point angles into substantially equal angles, such that no three adjacent points are equally spaced apart from each other.2. A blade of a wind turbine comprising:an airfoil, said airfoil having a substantially straight trailing edge and a plurality of essentially planar serrations located at said trailing edge;each of said plurality of serrations comprising two or more substantially straight edges such that edges of adjacent serrations meet to form a trough comprising an angle, said trough defining a trough length as being the shortest distance between said trough and the nearest point of said trailing edge;each of said plurality of serrations terminating at a point comprising an angle, each said point ...

FORMATION OF A CORE STRUCTURE OF A WIND TURBINE ROTOR BLADE BY USING A PLURALITY OF BASIC CORE COMPONENTS

A basic core component is provided for forming, together with at least one another basic core component, a core structure of a rotor blade of a wind turbine. The basic core component includes a precasted base element being made from a foam material, and a resin receiving layer, which is adhered to at least one surface of the precasted base element. When, during a casting procedure, the resin receiving layer adjoins the surface of another basic core component, the resin receiving layer is adapted to receive resin such that, after hardening the received resin, the basic core element and the another basic core element are mechanically connected with each other. 115-. (canceled)16. A basic core component for forming , together with at least one another basic core component , a core structure of a rotor blade of a wind turbine , the basic core component comprising:a precasted base element being made from a foam material, anda resin receiving layer, which is adhered to at least one surface of the precasted base element,wherein,when, during a casting procedure, the resin receiving layer adjoins the surface of another basic core component, the resin receiving layer is adapted to receive resin such that, after hardening the received resin, the basic core element and the another basic core element are mechanically connected with each other.17. The basic core component as set forth in claim 16 , wherein the foam material comprises at least one of Polyurethane claim 16 , Polyvinyl chloride claim 16 , Polyethylene terephthalate and Polybutylene terephthalate.18. The basic core component as set forth in claim 16 , wherein the resin receiving layer comprises a glass fiber material and/or a carbon fiber material.19. The basic core component as set forth in claim 16 , wherein the basic core component comprises a cross sectional shape having a first side and a second side claim 16 , wherein the first side is oriented inclined with respect to the second side.20. The basic core ...

BULKHEAD OF A WIND TURBINE

A bulkhead () of a wind turbine () to be arranged on a rotor blade connection of a rotor blade (), especially on a rotor hub (). The bulkhead () has a core body (). A layer () of fiberglass-reinforced plastic () is arranged on the core body () on both sides respectively and a metal layer body () is arranged on one side of the layer of fiberglass-reinforced plastic (). A method for producing a bulkhead () of a wind turbine (), which is arranged on a rotor blade connection of a rotor blade () and a use of a bulkhead () of a wind turbine (). 1221014922. A bulkhead () for a wind turbine () that is disposed at a rotor blade connection of a rotor blade () on a rotor hub () , the bulkhead () comprising:{'b': '30', 'a core body (),'}{'b': 31', '32', '31', '32', '30', '30', '31', '32, 'a plurality of layers (, ) of fiberglass-reinforced plastic, wherein the layers (, ) are arranged on the core body () so that the core body () is between the layers (, ), respectively, and'}{'b': 33', '31, 'a metal layer body () is arranged on one side of one of the layers () of fiberglass-reinforced plastic.'}22230. The bulkhead () according to claim 1 , wherein the core body () is made of a polymer or a light metal foam.32230. The bulkhead () according to claim 1 , wherein the core body () is made of polyvinyl chloride (PVC) or polyethylene (PET).4223132. The bulkhead () according to claim 1 , wherein the layers ( claim 1 , ) of fiberglass-reinforced plastic are made of non-woven fabrics.52222. The bulkhead () according to claim 1 , wherein the bulkhead () includes one or more access openings claim 1 , and wherein the access openings are formed in a closable manner.630313233. The bulkhead according to claim 1 , wherein the core body () has a thickness between 15 mm and 35 mm claim 1 , and the layers ( claim 1 , ) of fiberglass-reinforced plastic (FGRP) has a thickness between 1 mm and 5 mm respectively and the metal layer body () has a thickness between 0.1 mm and 0.8 mm.72233. The bulkhead ...

APPARATUS FOR ROTATING THE NACELLE OF A WIND TURBINE

The present invention provides an apparatus for the controlled rotation of a nacelle of a wind turbine, which includes a control device and n of yaw brakes. In standstill operation, the n yaw brakes are actuated to impart a standstill holding moment M1 for holding the nacelle, and the n yaw brakes impart a substantially equal first holding moment. In tracking operation, the n yaw brakes are actuated to impart a tracking holding moment, M2, which is lower than the standstill holding moment M1 (M1>M2). The control device, in tracking operation, actuates a number m of the n yaw brakes to generate substantially the same constant holding moment M3, where M1/n>M3>M2/n, and where the other (n−m) yaw brakes are actuated to generate substantially the same constant holding moment M4, where m*M3+(n−m)*M4˜=M2, and M1/n>M2/n>M4. 1. An apparatus for the controlled rotation of a nacelle of a wind turbine , having a control device and having a plurality of azimuth motors , wherein the apparatus furthermore has a plurality , amounting to n in number , of yaw brakes , wherein the control device is configured for standstill operation and for tracking operation , wherein in standstill operation , the n yaw brakes are actuated so as to impart a standstill holding moment M1 for holding the nacelle , wherein here , the n yaw brakes impart in each case a substantially equal first holding moment , and wherein in tracking operation , the n yaw brakes are actuated so as to impart a tracking holding moment M2 , wherein the tracking holding moment M2 is lower than the standstill holding moment M1 (M1>M2) , and also lower than the overall moment generated by the azimuth motors in tracking operation , wherein the control device , in tracking operation , actuates a number m of n yaw brakes in each case so as to generate substantially the same constant holding moment M3 , wherein M1/n>M3>M2/n , and wherein the other (n−m) yaw brakes are actuated in each case so as to generate substantially the same ...

Power generation apparatus

A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power.

Method for moving a wind turbine component, such as a wind turbine hub, from a transportation position to a wind turbine assembly position in or on the nacelle, the main shaft or the hub, a handling unit, a wind turbine hub and use hereof

The invention relates to a method for moving a wind turbine component, such as a wind turbine hub, from a transportation position to a wind turbine assembly position. The method comprises the steps of: attaching a handling unit to a structural part of the wind turbine component, operatively connecting the handling unit to a wire of a crane system, lifting the wind turbine component with the crane system to an assembly position of the wind turbine, the handling unit and the wind turbine component being suspended from a wire of the crane system, and rotating the wind turbine component with the handling unit during the lifting of the wind turbine component in order to orientate the wind turbine component for assembly. The invention also relates to a handling unit and a wind turbine hub and use hereof.

HUB FOR A WIND TURBINE AND A METHOD FOR FABRICATING THE HUB

A hub () for a wind turbine and a method for fabricating the hub () are disclosed. The hub () comprises a continuous shell forming a hollow body with a main shaft flange () adapted to connect the hub () to a main shaft,and one or more blade flanges (), each blade flange () being adapted to connect the hub () to a wind turbine blade. The hub () further comprises at least two hub parts (), each hub part () being casted separately from a castable material, and each hub part () being subsequently connected to at least one other hub part () via one or more connecting portions (), so that at least one blade flange () and/or the main shaft flange () comprises a section forming part of or being attached to one of the hub parts () and a section forming part of or being attached to another hub part (), thereby ensuring that the casted parts have a size and a weight which are manageable during the manufacture, in particular during the casting. The hub () may comprise one or more reinforcement elements arranged at or near the blade flange(s) (), e.g. comprising an inner wall () arranged at a distance to the continuous shell, thereby forming a cavity () between the inner wall () and the continuous shell. This allows the regions between the blade flanges () to be small or narrow, thereby reducing the size and weight of the hub (), while maintaining a sufficient strength and stiffness of these regions. 1. A hub for a wind turbine , the hub comprising a continuous shell forming a hollow body with a main shaft flange adapted to connect the hub to a main shaft and one or more blade flanges , each blade flange being adapted to connect the hub to a wind turbine blade , the hollow body being assembled from at least two hub parts connected to each other via one or more connection portions , each hub part being casted from a castable material , wherein the main shaft flange comprises a section forming part of or being attached to one of the hub parts and a section forming part of or being ...

System for converting wind energy

The invention consists of a system for converting wind energy (SCEE) into mechanical and then electrical energy. This system (SCEE) is not subject to the theoretical Betz limit (59%). The system (SCEE) has a wheel (F) provided with a series of blades arranged all around it. The wheel (F) rotates in a pivot connection about a fixed axle (L). Set on the axle (L), a support (E) ensures the fastening of the end-plates of a series of double-acting actuating cylinders (D). The rods of the latter are in a ball-jointed connection with the body (A) in order to offer the latter a maximum degree of freedom in space. A rigid arm (C) is set on one side of the wheel (F) and held on the other side, in a pivot connection, on a U-shaped section piece (B). Having a circular satellite motion, the latter rotates with the wheel (F) while sliding over a peripheral region of the body (A). When the wind acts on the body (A), the latter pivots with the section piece (B) and pushes the rods of the actuating cylinders (D). Having a circular satellite motion, the section piece (B) rotates while sliding over a peripheral region of the body (A), thus changing the fulcrum of the moment of the resultant force of the wind (the pivot connection of the section piece (B)) which is applied to the body (A). The rods of the actuating cylinders (D) will consequently be pulled and pushed, while having a cyclical translational motion. Set on the axle (L), a nacelle (J) primarily contains a hydraulic motor (H) and an electric generator (G), which can be coupled via a speed-increasing gear. During the reciprocal motions of the pistons of the actuating cylinders (D), a set of valves ensures a one-way flow of hydraulic fluid in the “go and return” hydraulic circuits, whether by pulling or by pushing. The “go and return” hydraulic circuits are, moreover, linked to the hydraulic motor (H). In order to allow the system (SCEE) to be held facing the wind and to pivot on the mast ( 1 ), its orientation can be ensured ...

Low-Cost Molded Wind Turbine Blade

An optimally-shaped single part molded wind turbine blade is provided for small wind turbines. Two mold bodies are brought together to form a cavity, and a third retractable mold body is inserted into the cavity. A flowable material such as filled thermoplastic resin is introduced into the space between the mold bodies and solidified. The retractable mold body is retracted and the mold is opened to reveal a single-part wind turbine blade with a hollow root region. 1. A method of forming a wind turbine blade , the method comprising:bringing a first mold body into proximity with a second mold body;positioning a a third, retractable mold body between the first and second mold bodiesinducing a material to flow in the space between the mold bodies, the flowable material subsequently becoming substantially non-flowable, andretracting the third mold body and separating the first and second mold bodies to release a wind turbine blade.2. The method of wherein the third mold body is refracted after the first and second mold bodies are separated.3. The method of wherein the third mold body is tapered to facilitate retracting the third mold body.4. The method of and further comprising forming mounting holes in the wind turbine blade.5. A method comprising:introducing a flowable material in a space between two wind turbine blade mold bodies and a third retractable mold body;allowing the flowable material to become substantially non-flowable;retracting the third mold body; andremoving the wind turbine blade from the two wind turbine blade mold bodies.6. The method of wherein the third mold body is retracted from a rootward portion of the wind turbine blade.7. The method of wherein the third mold body is tapered from the rootward portion of the wind turbine blade toward a tipward portion of the wind turbine blade.8. The method of wherein the flowable material is formed of at least one of thermoplastic resin claim 5 , fiber-reinforced thermoplastic resin claim 5 , thermoset resin ...

METHOD OF MANUFACTURING A WIND TURBINE BLADE AND A WIND TURBINE BLADE

The invention relates to a method for manufacturing a wind turbine blade, comprising the steps of pre-manufacturing a first blade member, positioning said pre-manufactured first blade member in a joining mold and bonding said first blade member with a second blade member using a vacuum assisted infusion process so as to form an integrated blade part. 1. A method for manufacturing a wind turbine blade , comprising the steps of:pre-manufacturing a first blade member,positioning said pre-manufactured first blade member in a joining mold, and bonding said first blade member with a second blade member using a vacuum assisted infusion process so as to form an integrated blade part.2. The method according to claim 1 , comprising the steps of:curing the pre-manufactured first blade member,demolding the pre-manufactured first blade member, andtransporting the pre-manufactured first blade member to the joining mold.3. The method according to claim 1 , comprising the steps of:curing the integrated blade part,bonding the integrated blade part with other blade members or other integrated blade parts using a vacuum assisted infusion process, andrepeating the above steps until the entire blade or an entire half shell of the blade is completed.4. The method according to claim 1 ,wherein the first blade member comprises a spar cap, andwherein the first blade member is positioned in the center of the joining mold.5. The method according to claim 1 ,wherein the first blade member comprises a bonding flange for bonding said first blade member to the second blade member.6. The method according to claim 5 ,wherein the second blade member is made up of blade building material, comprising the steps of:positioning said blade building material in the joining mold, wherein at least part of the blade building material overlaps the first blade member,applying a vacuum to the blade building material, andinfusing the blade building material with bonding means.7. The method according to claim 6 , ...

ROTOR HUB FOR A WIND TURBINE

A rotor hub for a wind turbine is provided. The rotor hub is adapted to support at least one rotor blade. The rotor hub has a base body. The base body has a first section providing a connecting site connectable with a wind turbine structure and an opposing second section providing a freely exposed front portion. The front portion is at least partially built of a sandwich-construction. 1. A rotor hub of a wind turbine for supporting a rotor blade of the wind turbine , comprising: a first section for providing a connecting site connectable with a wind turbine structure, and', 'a second section that is opposite to the first section for providing a freely exposed front portion,, 'a base body comprisingwherein the front portion comprises a sandwich-construction.2. The rotor hub according to claim 1 , wherein the sandwich-construction comprises two opposing stiffening layers and an intermediate layer claim 1 , wherein the intermediate layer is disposed in between the two opposing stiffening layers.3. The rotor hub according to claim 2 , wherein the two opposing stiffening layers are made of metal and/or composite material.4. The rotor hub according to claim 2 , wherein the two opposing stiffening layers are made of iron-based metal and/or fibre-reinforced plastic material.5. The rotor hub according to claim 2 , wherein the intermediate layer is made of plastic or composite material.6. The rotor hub according to claim 2 , wherein the intermediate layer is made of fibre-reinforced plastic material7. The rotor hub according to claim 2 , wherein the intermediate layer comprises an intermediate layer body having a comb-like and/or cellular structure.8. The rotor hub according to claim 2 , wherein the intermediate layer is attached to the two opposing stiffening layers.9. The rotor hub according to claim 8 , wherein the intermediate layer is attached to the two opposing stiffening layers by a bonding agent claim 8 , by welding and/or by brazing.10. The rotor hub according to ...

Blade for a Wind Turbine

A blade for a wind turbine comprising a blade root portion for attachment to a mounting flange of the wind turbine, the blade root comprising a plurality of first holes provided with an internal bushing wherein the bushings comprise a first end at or near a mounting surface of the blade root and an opposite second end embedded in their corresponding first holes, and wherein one or more internal bushing being guiding bushings, the guiding bushings comprising a first end that is adapted to guide the blade root with respect to a mounting flange.

Wind turbine rotor blade assembly with root extension panel and method of assembly

A wind turbine rotor blade assembly and associated method include a rotor blade having a pressure side, a suction side, a leading edge, and a trailing edge extending in a generally span-wise direction between a tip and a root. An edge extension panel is attached along either of the leading edge or trailing edge (or along both edges) in a generally span-wise direction from adjacent the root towards the tip. The edge extension panels include a cured and hardened viscous material continuous core formed onto the leading or trailing edge with a contoured generally aerodynamic outer surface.

ROD WINDING STRUCTURE IN COMPOSITE DESIGN

A complex, three-dimensional lattice made of previously impregnated fiber strands is laid over nodes, thus forming the main body of the component to be produced. The composite wound rod structure, comprising a skeleton of ribs that are formed of impregnated fiber strands in a continuous winding and laying process, is characterized in that the ribs are solid ribs, or lattice structure ribs prefabricated from fiber strands, which contain nodes, over which the impregnated fiber strands are alternately, and incrementally, placed diagonally, horizontally and vertically, until the desired strand thickness has been reached, and the wound rod structure can be segmented as needed. The solid ribs are made of fiber composites, aluminum, or other lightweight materials. 117-. (canceled)18. A composite wound rod structure , comprising a first set of impregnated fiber strands that are wound and laid by a continuous process so as to be alternately and incrementally diagonal , horizontal and vertical , the process being carried out until a desired strand thickness has been reached , and a skeleton of ribs having nodes integrally formed thereon or having attachment parts forming nodes , wherein the ribs are solid ribs or lattice structure ribs prefabricated from a second set of impregnated fiber strands , the nodes forming mutually opposed sites for retaining the fiber strands of the first set on outer edges of the ribs and being uniformly distributed over each entire rib , the openings being of sufficient diameter to receive the fiber strands of the first set and being constricted to a diameter less than that of the fiber strands of the first set immediately proximate to the outer edge of the rib so as to retain the fiber strands of the first set in the openings.19. The wound rod structure according to claim 18 , wherein the shapes of the ribs are based on an outer profile of the wound rod structure claim 18 , and the wound rod structure is divided into sections by the ribs claim 18 ...

WIND TURBINE BLADE, METHOD FOR MANUFACTURING WIND TURBINE BLADE, AND WIND POWER GENERATOR AND WIND TURBINE BLADE MONITORING SYSTEM INCLUDING WIND TURBINE BLADE

A wind turbine blade used in a wind power generator that receives wind and rotates a rotating shaft of a generator includes at least two layers on a surface of a blade body, one of the layers being colored with a coating material different in color from the blade body and the rest of the layers. The layers are provided at least on a tip, particularly at a front edge of the wind turbine blade. A wind turbine blade monitoring system that monitors the wind turbine blade includes: an imaging unit that images the wind turbine blade in a predetermined position over a predetermined period at timing when the wind turbine blade passes through the predetermined position; and an indication unit that chronologically indicates imaging results of the wind turbine blade imaged by the imaging means. 1. A wind turbine blade of a wind power generator that receives wind and rotates a rotating shaft of a generator , comprising:at least two layers on a surface of a blade body, one of the layers being colored with a coating material different in color from the blade body and the rest of the layers.2. The wind turbine blade according to claim 1 , wherein the layers are provided on a tip of the wind turbine blade.3. The wind turbine blade according to claim 1 , wherein the layers are provided at least at a front edge on the tip of the wind turbine blade.4. The wind turbine blade according to claim 1 , wherein the coating material for coloring the layers has erosion resistance.5. The wind turbine blade according to claim 1 , wherein each of the two or more layers is coatings applied with a thickness of a predetermined control value.6. A wear control apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'imaging means for imaging a wind turbine blade according to in a predetermined position at timing when the wind turbine blade passes through the predetermined position; and'}indication means for indicating imaging results of the wind turbine blade imaged by the imaging means ...

Arrangement to reduce noise originated by a wind turbine blade

An arrangement for reducing noise which is generated by a wind turbine blade is provided. The wind turbine blade has a first panel and a second panel. The first and the second panel are arranged at a trailing edge of the wind turbine blade, wherein the first panel is adjacent to the second panel. The first panel includes a first transition zone and the second panel includes a second transition zone. The first transition zone and the second transition zone are engaged in a way that whistle tones produced by a gap of the wind turbine blade, the gap being located between the first panel and the second panel, is reduced or even avoided.

APPARATUS FOR AND METHOD OF MOUNTING WIND TURBINE BLADES ON A WIND TURBINE TOWER

The application describes an apparatus for and a method of mounting wind turbine blades on a wind turbine tower. A number of guide rods are provided in the vicinity of the blade root and hub for connection to corresponding socket sections . The guide rods and socket sections are provided on respective ones of a wind turbine blade and a wind turbine hub to facilitate connection of one to the other. The guide rods and the sockets may be provide on the same or on different ones of the blade or hub. The guide rods and sockets allow the blade to be positioned at the hub in the correct rotational orientation to facilitate connection of the necessary fasteners. 1. A blade connection apparatus for connecting a wind turbine blade to a wind turbine rotor hub , comprising:a first and second engagement surface, wherein the first engagement surface is located at the root of the wind turbine blade and the second engagement surface is located on the wind turbine rotor hub for engaging with the first engagement surface;a plurality of fasteners for releasably and securely connecting the first engagement surface to the second, the fasteners comprising a male part provided on one of the engagement surfaces for connection with a corresponding female part provided on the other engagement surface;first and second guide members located on the wind turbine blade and the rotor hub respectively and arranged to cooperate as they are brought into contact with each other;wherein when the first and second engagement surfaces are brought towards one another for connection the first and second guide members engage one another in advance of contact between the first and second engagement surfaces, and ensure that the male and female parts of the fasteners are aligned for connection.2. The connection apparatus of claim 1 , wherein the first and second engagement surfaces are substantially circular flanges having a circumference around which at discrete locations the plurality of fasteners are ...

REMOVABLE ROTOR BLADE TIP

One or more embodiments are directed to a rotor blade tip for a rotor blade, in particular for a rotor blade of a wind power installation, which is in the form of an independent portion which can be connected to the rotor blade and has a first connecting surface directed in the direction of the rotor blade to be connected. For making the connection to the rotor blade provided at the connecting surface are first guide means with a guide direction when making the connection to the rotor blade and first locking means for fixing the rotor blade tip to the rotor blade as first component parts of a connecting mechanism. 1. A rotor blade tip for connecting to a rotor blade of a wind power installation , the rotor blade tip comprising:a first connecting surface facing a direction of the rotor blade to be connected and for making the connection to the rotor blade, the connecting surface including:first guide means having a guide direction for making the connection to the rotor blade; andfirst locking means for fixing the rotor blade tip to the rotor blade when the first guide means makes the connection to the rotor blade.2. The rotor blade tip according to wherein the first guide means comprises at least one plug element arranged parallel to the guide direction.3. The rotor blade tip according to wherein the first locking means includes a projection as a first connecting element for making a releasable claim 1 , positively locking connection to a corresponding second connecting element on the rotor blade.4. The rotor blade tip according to wherein the projection is arranged centrally on the first connecting surface and has a projection surface parallel to the guide direction.5. The rotor blade tip according to wherein projection surface has at least one opening having a shape that is complementary to that an opening of the second connecting element.6. The rotor blade tip according to wherein the first connecting element and the second connecting element each have an aperture ...

WIND TURBINE BLADE STRUCTURES, LIFTING ASSEMBLIES AND METHODS OF BLADE HANDLING

A wind turbine blade is formed with structures allowing its lifting by a lifting apparatus , the blade comprising upper and lower blade shells and an internal load-bearing structure comprising an internal spar or internal webs, a plurality of lifting points arranged about the blade centre of gravity, comprising openings for receiving lifting members of a lifting apparatus insertable therein into structures secured to the load-bearing structure, and with a locking connection being established between the lifting members and the load-bearing structure 1. A wind turbine blade comprising:opposed blade surfaces;an internal load-bearing structure; anda plurality of lifting points in at least one of the blade surfaces comprising lift openings through the blade surface adjacent or into the load-bearing structure for receiving lifting members insertable therein;wherein the load-bearing structure is adapted to make load-bearing connection to lifting members inserted in said openings.2. The wind turbine blade according to wherein the load-bearing structure comprises a beam or web extending between the blade surfaces claim 1 , and wherein the beam or web is adapted to make load-bearing connection to the lifting members.3. The wind turbine blade according to wherein the or each beam or web is provided with lateral openings to receive locking elements insertable into the lateral openings and into aligned openings in inserted lifting members.4. The wind turbine blade according to wherein the load-bearing structure comprises a spar having opposed spar cap portions interconnected by beam or spar web portions generally perpendicular thereto claim 3 , and wherein the lateral openings are provided in the spar web portions to receive locking elements insertable into the lateral openings and into openings in inserted lifting members.5. The wind turbine blade according to wherein the lateral openings in the beam or web portions are provided at or near the neutral axis of the blade.6. The ...

ADVANCED AERODYNAMIC AND STRUCTURAL BLADE AND WING DESIGN

An airfoil having an inboard blade section () and an outboard blade section (). The inboard blade section () has a mid-blade end (), and the inboard blade section () includes a biplane wing (). The multiplane wing () has a first blade () and a second blade (). The first blade () has a first airfoil cross-section (), and the second blade () has a second airfoil cross-section (). The first blade () is generally parallel to the second blade (). The outboard blade section () has a mid-blade end (), and the outboard blade section () includes a monoplane wing () with a third airfoil cross-section (). The mid-blade end () of the outboard blade section () is joined to the mid-blade end () of the inboard blade section (). 1. A rotor blade for a wind turbine m relation to a wind direction , the rotor blade comprising:(a) a blade root;(b) an inboard blade section having a length, an inboard end, and a mid-blade end opposite the inboard end, the inboard end of the inboard blade section being joined to the blade root, the inboard blade section comprising a biplane wing, the biplane wing having a first blade and a second blade, the first blade having a first airfoil cross-section, a first leading edge, a first trailing edge, a first chord, and an upper surface, the second blade having a second airfoil cross-section, a second leading edge, a second trailing edge, a second chord, and a lower surface, the first chord being generally parallel to the second chord, the second blade being downwind from the first blade with respect to the wind direction, the first blade having a positive stagger with respect to the second blade such that the first leading edge is offset from the second leading edge in a direction of thrust and the first trailing edge is offset from the second trailing edge in a direction of thrust, the first airfoil cross-section and the second airfoil cross-section each being a SC2-0714 airfoil profile; and(c) an outboard blade section having a length, a mid-blade end, ...

UV-IR COMBINATION CURING SYSTEM AND METHOD OF USE FOR WIND BLADE MANUFACTURE AND REPAIR

A UV-IR combination curing system and method for manufacture and repair of composite parts, such as for use in wind blade manufacture and repair. The system and method utilize UV and IR dual radiation sources to cure glass fiber reinforced laminates containing a photo initiator. The UV and IR dual radiation sources can be configured as discrete stand-alone UV and IR lamps used in a side by side configuration, a plurality of UV lamps with thermal IR radiation, a combined UV/IR lamp, or other forms of light sources providing both UV and IR radiation. To achieve high glass transition and complete curing of thick laminates, the IR radiation source is initially turned on to heat the laminate to close to 40° C.-100° C. before the UV radiation source is turned on. The IR radiation source can be turned off after UV radiation source is activated. 1. A method , comprising:providing a first radiation source configured to heat a plurality of layers of a composite structure comprising a reinforced resin having a reactive group and a photoinitiator throughout a thickness of the plurality of layers of the composite structure;applying a first radiation from the first radiation source, forming a plurality of pre-heated layers of a composite structure;providing a second radiation source configured to cure the plurality of pre-heated layers of the composite structure through a thickness of the composite structure; andapplying a second radiation from the second radiation source, forming a covalent bond across an interface of a first layer of the plurality of pre-heated layers and an adjacent successive layer of the plurality of pre-heated layers and a plurality of additional covalent bonds across additional interfaces of the plurality of pre-heated layers.2. The method of claim 1 , wherein providing a first radiation source comprises providing an infrared radiation source.3. The method of claim 2 , wherein providing a first radiation source comprises providing a radiation source ...

PROTECTING FILM FOR BLADE OF WIND POWER GENERATOR

The present invention provides a protection film for blades to be adhered to the blade surface of wind power generators, which has a substrate and a pressure-sensitive adhesive layer on one surface of the substrate. 110.-. (canceled)11. A wind power generator blade having a surface covered with a protection film , wherein the protection film comprises (a) a substrate comprised of a composite film comprising an acrylic polymer and a urethane polymer , and (b) a foam-containing pressure-sensitive adhesive layer formed on one surface of the substrate , and wherein the pressure-sensitive adhesive layer is in contact with the surface of the wind power generator blade.12. (canceled)13. The blade according to claim 11 , wherein the foam-containing pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive.14. (canceled)15. A wind power generator having the wind power generator blade according to .16. (canceled)17. A wind power generator having the wind power generator blade according to .18. (canceled) The present invention relates to a blade of a wind power generator, which is protected by a protection film having a pressure-sensitive adhesive layer, the protection film, and a wind power generator having such blade.Wings of a wind power generator (hereinafter to be referred to as blade) rotate in the flow of air, which is a fluid, and convert the energy of rotation to electricity. For efficient rotation on receipt of the flow of a fluid, it is important to reduce blade weight to decrease the inertial force. In addition, since many of the blades for wind power generators exceed 50 m in full length, weight reduction of the blades leads to the downsizing and light weight of the generator itself. For efficient conversion of the fluid flow to the rotational movement of the blades, moreover, an appropriate design of a blade shape and maintenance of the shape, as well as smoothness of the surface and maintenance thereof are required.As blade materials, light ...

ADHESIVE APPLICATION APPARATUS FOR MANUFACTURING BLADE FOR WIND POWER GENERATOR

Disclosed is an adhesive application apparatus for manufacturing a blade for a wind power generator. The adhesive application apparatus for manufacturing a blade for a wind power generator according to an exemplary embodiment of the present invention may include: a blade mold on which a blade is mounted; a plurality of adhesive application units positioned to be spaced apart from the blade mold and configured to apply an adhesive on an inner surface of the blade; a horizontal transfer unit configured to transfer the adhesive application unit in a horizontal direction; and a vertical transfer unit configured to transfer the adhesive application unit in a vertical direction. 1. An adhesive application apparatus for manufacturing a blade for a wind power generator , comprising:a blade mold on which a blade is mounted;a plurality of adhesive application units positioned to be spaced apart from the blade mold and configured to apply an adhesive on an inner surface of the blade;a horizontal transfer unit configured to transfer the adhesive application unit in a horizontal direction; anda vertical transfer unit configured to transfer the adhesive application unit in a vertical direction.2. The adhesive application apparatus of claim 1 , wherein:the horizontal transfer unit includes:a first carriage and a second carriage, which move along a rail unit formed on a surface of the blade mold and face each other;a shaft which connects the first carriage and the second carriage to each other; anda slider which moves the adhesive application unit along the shaft.3. The adhesive application apparatus of claim 2 , wherein:the vertical transfer unit includes:a first arm having a first one end portion which is connected to the shaft to be rotatable about the shaft; anda second arm having a second one end portion which is formed with a hinge shaft and connected to a first other end portion of the first arm, and configured to be rotatable about the hinge shaft, andthe adhesive ...

Winglet for a wind turbine rotor blade

In one aspect, a winglet for a rotor blade is disclosed. The winglet may generally include a winglet body extending at least partially between a winglet origin and a blade tip. The winglet body may define a sweep and a pre-bend. The sweep defined between the winglet origin and the blade tip may range from about 0.5% to about 4.0% of a span of the rotor blade. The pre-bend defined between the winglet origin and the blade tip may range from about 1.5% to about 4.5% of the span of the rotor blade

Enhanced wind turbine blade

A wind turbine blade includes a root portion, a tip and a body extending between the root portion and the tip. The body has a pressure side and a suction side. The body further has at least one winglet. Each winglet has a spanwise extension towards the root portion of the rotor blade and that ends at the tip to form a winglet having a substantially C-shaped or substantially open P-shaped geometry.

Ring airfoil with parallel inner and outer surfaces

A ring airfoil with a voluminous leading edge region, an intermediate region, a trailing edge region including a flap. The ringed structural leading edge region combined with a rigid trailing edge region having intermediate discrete support portions extending therebetween provides sufficient rigidity to support the flap on the trailing edge region while using a membrane intermediate surface to form a portion of the intermediate region of the airfoil.

Method of Using a Formable Core Block for a Resin Impregnation Process

A use of a core block for an impregnation process as well as a composite structure comprising such a core block is described. The core block has a first surface and a second surface, and a number of first grooves is formed in the first surface of the core. Furthermore, a number of second grooves is formed in the second surface of the core. The first grooves have a first height (h) and a bottom, and the first grooves and the second grooves are part of a resin distribution network formed in the core block. The distance (t) between the bottom of the first grooves and the second surface of the core block is of such a size that the core block is flexible along the first grooves. Additionally, the sum of the first height and the second height is larger than the thickness of the core block, and at least one of the first grooves in the first surface of the core block crosses at least one of the second grooves in the second surface of the core block. 115-. (canceled)1630. A core block () for use in a resin impregnation process , such as vacuum assisted resin transfer molding , the core block having a thickness (h) and comprising:{'b': 35', '36', '35', '31', '31', '1', '36', '32', '2, 'a first surface () and a second surface (), the first surface () comprising a number of first grooves (), the first grooves () having a first height (h) and a bottom; and the second surface () comprising a number of second grooves () having a second height (h);'}{'b': 31', '32', '30, 'the first grooves () and the second grooves () forming part of a resin distribution network formed in the core block ();'}{'b': 1', '2, 'wherein the sum of the first height and the second height (h+h) is larger than the thickness (h) of the core block;'}{'b': 31', '35', '30', '32', '36', '30, 'wherein at least one of the first grooves () in the first surface () of the core block () crosses at least one of the second grooves () in the second surface () of the core block ();'}{'b': 31', '36', '30', '30', '31, ' ...

METHOD OF CONTROLLING A WIND TURBINE

A method of controlling a wind turbine rotor blade, the blade comprising a pitch axis about which the blade can be pitched, and a flap movable to alter the aerodynamic profile of the blade, the method comprising the steps of: providing a pitch angle request (θ) to a pitch actuator; determining an initial flap angle request (β_flap); providing a decoupled flap angle request (β) to a flap actuator; herein the decoupled flap angle request (β) is calculated from the pitch angle request (θ) and the initial flap angle request (β_flap) such that the decoupled flap angle (β) provided to the flap actuator does not counteract the pitch angle request (θ); and pitching the blade according to the pitch angle request (θ) and moving the flap according to the decoupled flap angle request (β). 1. A method of controlling a wind turbine rotor blade , the blade comprising a pitch axis about which the blade can be pitched , and a flap movable to alter the aerodynamic profile of the blade , the method comprising:providing a pitch angle request (θ) to a pitch actuator;determining an initial flap angle request (β_flap);providing a decoupled flap angle request (β) to a flap actuator; whereinthe decoupled flap angle request (β) is calculated from the pitch angle request (θ) and the initial flap angle request (β_flap) such that the decoupled flap angle request (β) provided to the flap actuator does not counteract the pitch angle request (θ); andpitching the blade according to the pitch angle request (θ) and moving the flap according to the decoupled flap angle request (β).2. A method according to claim 1 , wherein the pitch angle request (θ) is converted to a first parameter (ΔCL_θ) that represents a change in lift force at the location of the flap as a result of the rotor blade being pitched according to the pitch angle request (θ).3. A method according to claim 2 , wherein the pitch angle request (θ) is converted to a change in pitch angle request (Δθ); andthe first parameter (ΔCL_θ) is ...

FIBRE REINFORCED COMPOSITE MOULDING

The present invention regards a fibre-reinforced composite moulding with an outer () structure and an inner structure (), wherein the outer structure () is formed from at least one layer of fibrous reinforcing material and a cured first resin material, and the inner structure () is formed from a plurality of layers of fibrous reinforcing material and a second cured resin material, wherein the viscosity of the uncured first resin material is lower than the viscosity of the uncured second resin material and wherein in the composite moulding the two cured resin materials are at least partially mixed with each other. It also regards a process for the production of such a fibre-reinforced composite moulding. 1. A fibre-reinforced composite moulding with an outer structure and an inner structure , wherein the outer structure is formed from at least one layer of fibrous reinforcing material and a first resin material , and the inner structure is formed from a plurality of layers of resin impregnated fibrous reinforcing material or prepreg comprising a second resin material , wherein the molding is configured for processing by infusion or injection of a flowable first resin material into the moulding and curing the first and second resin material.2. The moulding of claim 1 , wherein the first and second resin material are simultaneously cured or part cured.3. The moulding of claim 1 , wherein said outer structure comprises an outer structure located below the inner structure and an outer structure located above the inner structure and wherein during infusion the first resin material infuses the outer structure below the inner structure before the outer structure above the inner structure is completely infused.4. The moulding of claim 1 , wherein the moulding comprises a load carrying core structure claim 1 , the core structure comprising apertures to enable visual identification of the location of the resin in the assembly.5. The moulding of claim 4 , wherein the inner ...

ADHESIVE FOR FILLING JOINTS AND GAPS IN ROTOR BLADES FOR WIND POWER PLANTS

The present invention relates to two-component polyurethane compositions which on the one hand have a long open time and, even after extended exposure to a climate with high atmospheric humidity (e.g., 70% relative humidity), even after 40 minutes and in particular even after 60 minutes, can still be glued and cured to form polymers having high mechanical strength. The composition comprises castor oil, at least one polyol having 5-8 hydroxyl groups, a mixture of two different polyether alcohols and/or polyester polyols on the basis of castor oil or soybean oil and at least one polyisocyanate. The two-component polyurethane compositions are suitable in particular for non-positive filling joints or gaps that are joined by large-surface area structural gluing, in particular of vane half shells of rotor blades for wind power plants. 1. A two-component polyurethane composition consisting of a polyol component and a polyisocyanate component; castor oil;', 'at least one polyol having 5-8 hydroxyl groups;', 'at least one polyether and/or polyester polyol on the basis of castor oil or soybean oil having an OH number of 150 to 200 mg KOH/g', 'and at least one polyether and/or polyester polyol based on castor oil or soybean oil with an OH number of 210-300 mg KOH/g, 'wherein the polyol component comprises'} 'at least one polyisocyanate.', 'and wherein the polyisocyanate component comprises'}2. The two-component polyurethane composition according to claim 1 , wherein the polyol having 5 to 8 hydroxyl groups is a polyol having exclusively secondary hydroxyl groups.3. The two-component polyurethane composition according to claim 1 , wherein the polyol having 5-8 hydroxyl groups is a polyether polyol on the basis of sorbitol.4. The two-component polyurethane composition according to claim 1 , the polyisocyanate being an aromatic polyisocyanate.5. The two-component polyurethane composition according to claim 1 , wherein the polyol component further contains a polyamine in an amount ...

Rotor assembly for an axial turbine

A rotor assembly includes a drive shaft; a rotor having rotor blades, which each comprise a profiled rotor blade section and a blade fastening section; wherein each blade fastening section comprises a first contact region and a second contact region, the first contact region being at least indirectly supported on the blade fastening section of a first adjacent rotor blade, the second contact region being at least indirectly supported on the blade fastening section of a second adjacent rotor blade; the blade fastening sections are fastened in a formfitting manner and/or by a screw connection on the drive shaft, so that there is a connection between rotor blade and drive shaft on an axial end face of the blade fastening section. Intermediate elements having an elastic intermediate layer are between the blade fastening sections of adjacent rotor blades.

BANDED TURBINE

A banded turbine configuration has an integral outer band support structure capable of providing two point simple support for a multiplicity of blades. A large scale vertical array has a set of twelve 23 m-diameter banded turbines with up to nine blades and resting on an Open Web Steel Joist (OWSJ) platform. The banded turbine configuration is supported off of a main shaft hub assembly, which is supported by forward and aft pillow block bearing assemblies. The banded turbine allows for a protective screen for bird- and bat-kill prevention. Each banded turbine employs DC alternators to provide a switchable output which is subsequently fed to a dedicated set of high efficiency grid-compatible solid state invertors or, alternatively, to energy storage. 1. A banded wind turbine configuration , comprising:a plurality of blades mounted on a shaft providing a first point of support for the blades;an integral outer band support providing a second point of support for the blades, wherein induced deflections and bending stresses of the blades are supported by the first and second points of support.2. A wind turbine system , comprising:a plurality of banded wind turbine assemblies mounted on a mast;each said wind turbine assembly having blades mounted on a main shaft providing a first point of support for the blades, and an integral outer band support providing a second point of support for the blades, wherein induced deflections and bending stresses of the blades are supported by the first and second points of support.3. The wind turbine system according to claim 2 , wherein said mast is a space frame support structure that supports at least two of said wind turbine assemblies at each of at least two vertically spaced apart levels.4. The wind turbine system according to claim 2 , wherein said mast has a base having an outer perimeter railroad track that engages a plurality of post mounted load-bearing railroad bogie castor elements that enable relative rotation between the ...

Method and equipment for turning a blade or a blade part for a wind turbine during production or installation

A method for installing an inner blade part or a wind turbine blade and to a lifting bracket for use in performing said method, e.g., a inner blade part for a partial pitch wind turbine blade comprising an inner blade part and an outer blade part, said inner blade part comprising a first flange for connection to a hub flange at a wind turbine hub and a second flange for connection to an outer blade part, said flanges all comprising a number of bolts and/or bolt holes. The lifting bracket has a flange for connection to a suitable number of bolts and/or bolt holes at said second flange on the inner blade part, the flange having a first surface and an opposite second surface arranged for interfacing with the first flange, and further the lifting bracket also has at least one lifting lug and at least one counter weight.

FACILITATED HANDLING OF WIND TURBINE BLADES

A device for facilitating handling of a wind turbine blade is provided. The device includes an inflatable member adapted to be arranged at the wind turbine blade such that the inflatable member covers at least a part of the wind turbine blade, wherein, when the inflatable member is arranged at the wind turbine blade and inflated, an aerodynamic drag coefficient of the wind turbine blade with the arranged inflatable member is less than an aerodynamic drag coefficient of the wind turbine blade. Further, there is described a system for handling a wind turbine blade, and a method of facilitating handling of a wind turbine blade. 1. A device for facilitating handling of a wind turbine blade , the device comprising:an inflatable member adapted to be arranged at the wind turbine blade such that the inflatable member covers at least a part of the wind turbine blade,wherein, when the inflatable member is arranged at the wind turbine blade, and inflated, a first aerodynamic drag coefficient of the wind turbine blade with the arranged inflatable member is less than a second aerodynamic drag coefficient of the wind turbine blade without the arranged inflatable member.2. The device according to claim 1 , wherein the inflatable member is adapted to be arranged at one side of the wind turbine blade.3. The device according to claim 1 , wherein the inflatable member circumferentially surrounds the wind turbine blade.4. The device according to claim 1 , wherein the inflatable member is adapted to cover a longitudinal section of the wind turbine blade.5. The device according to claim 1 , wherein the inflatable member is adapted to contain the wind turbine blade within an inflatable volume of the inflatable member.6. The device according to claim 1 , wherein the inflatable member comprises an inner wall and an outer wall which together form an inflatable volume of the inflatable member.7. The device according to claim 6 , wherein the inner wall comprises a membrane adapted to separate ...

TRAILING EDGE TAPE

A wind turbine rotor blade for a wind turbine having a length extending from a first end, a leading edge and a trailing edge, where a pressure side and a suction side extend between the leading edge and the trailing edge and thus define an airfoil shaped cross section. At least along a part of the length of the wind turbine rotor blade, the trailing edge comprises a trailing edge part having a first and a second installation flange, each of which has a width. The installation flanges are arranged in connection with a trailing edge extender, the first and second installation flanges both having an inner surface for installation on the pressure side and the suction side of the wind turbine blade. Also, method for fitting a wind turbine rotor blade with a trailing edge part is provided. 1. A wind turbine rotor blade for a wind turbine , comprising:a length extending from a first end to a second end,a leading edge and a trailing edge,a pressure side and a suction side extending between said leading edge and trailing edge and defining an airfoil shaped cross section,wherein said trailing edge comprises a trailing edge part along at least a part of said length of the wind turbine rotor blade, said trailing edge part comprising a first and a second installation flange, each of which has a width, said installation flanges being arranged in connection with a trailing edge extender,wherein said first and second installation flanges both comprise an inner surface for installation on the pressure side and the suction side of said wind turbine rotor blade, andwherein said trailing edge part comprises an area at an intersection between said two installation flanges and said trailing edge extender and at which area a ductile material is arranged.2. A wind turbine rotor blade according to claim 1 , wherein said ductile material is a high viscosity adhesive.3. A wind turbine rotor blade according to claim 1 , wherein said trailing edge part comprises at least one embedded element at ...

Multilayer Complex And Use Thereof For Manufacturing Parts Made Of A Composite Material, And Method For Manufacturing Such A Part

A multilayer complex for the vacuum molding of a composite part containing a fibrous reinforcement and a polymer resin, including a peel-ply fabric combined with a microporous membrane which is at least pervious to gases. 1. A multilayer complex for the vacuum molding of a composite part containing a fibrous reinforcement and a polymer resin , comprising a peel-ply fabric combined with a microporous membrane which is at least pervious to gases.2. The multilayer complex of claim 1 , characterized in that the microporous membrane contains a polymer selected from the group consisting of polyolefins claim 1 , polyurethanes claim 1 , and fluoropolymers.3. The multilayer complex of claim 1 , characterized in that the microporous membrane has a pore density ranging between 2 billion and 8 billion pores/cm claim 1 , an average pore diameter being smaller than 20 μm.4. The multilayer complex of claim 1 , characterized in that the microporous membrane has a thickness ranging between 20 and 100 μm.5. The multilayer complex of claim 1 , characterized in that the microporous membrane has an average permeability of gases greater than 1 L/m/s under 2 claim 1 ,000 Pa.6. The multilayer complex of claim 1 , characterized in that the microporous membrane is associated with the peel-ply fabric by gluing with glue dots.7. The multilayer complex of claim 6 , characterized in that the glue dots are positioned so that their density is from 30 to 180 glue dots per cmof a surface area of the microporous membrane and in that a surface area occupied by said glue dots amounts to from 10 to 50% of the surface area of the microporous membrane.8. The multilayer complex of claim 1 , characterized in that the peel-ply fabric is based on polyester or polyamide fibers.9. The multilayer complex of claim 1 , characterized in that the multilayer complex has a thickness ranging between 130 and 270 μm.10. The multilayer complex of claim 1 , characterized in that the multilayer complex comprises a bleeder ...

Horizontal Axis Wind Turbine with Ball-and-Socket Hub

A horizontal axis wind turbine with a ball-and-socket hub is disclosed. The hub enables horizontal axis turbines with two or more blades to teeter in response to wind shear gradients. The new hub design for a turbine equipped with three blades has been modeled using modified FAST code and has shown significant advantages over present three-bladed turbines with fixed hubs in reducing loads on the blades, tower, main shaft and bearings. The new hub design for a turbine equipped with three blades has also shown significant advantages over present two-bladed teetering turbines in reducing loads on the blades and tower. A likely additional advantage of a ball-and-socket hub equipped with three blades over a teetering hub with two blades is that wider teetering ranges are possible due to the significantly reduced likelihood for resonant teetering. 1. A ball-and-socket hub for use on a horizontal axis turbine , comprising:{'sub': a', 'a, 'a main shaft ball that is suitable to be affixed to a front end of a main shaft such that the center of the main shaft ball can be intersected by a main shaft axis and perpendicular xand yaxes;'}{'sub': a', 'a, 'a hub socket that partially surrounds the main shaft ball and freely rotates about the xand yaxes;'}a plurality of blade connectors; anda plurality of dynamic rotational couplers, the plurality of dynamic rotational couplers comprising a larger coupler and a smaller coupler forming the coupling pair.2. The ball-and-socket hub of wherein the larger coupler is on an outer spherical surface of the main shaft ball and the smaller coupler extends from the inner surface of the surrounding hub socket.3. The ball-and-socket hub of wherein the larger coupler is on the inner surface of the surrounding hub socket and the smaller coupler extends from the outer surface of the main shaft ball.4. The ball-and-socket hub of wherein a dynamic rotational coupler comprises:a longitudinally oriented groove having elongated sides; anda smaller coupler ...

Root extender for a wind turbine rotor blade

A root extender for coupling a rotor blade to a hub of a wind turbine is disclosed. The root extender may generally include a body defining a longitudinal axis between a first end and a second end. The first end may define a first planar surface configured to be positioned adjacent to the hub and the second end may define a second planar surface configured to be positioned adjacent to the rotor blade. The second planar surface may be oriented at a cone angle relative to the first planar surface. In addition, the longitudinal axis may be oriented at a non-perpendicular angle relative to the first planar surface.

FASTENING SYSTEM FOR WIND TURBINES AND CORRESPONDING INSTALLATION METHODS

Fastening system for wind turbines characterized by comprising a front flange () and a rear flange (), which are joined together and supported on the hollow rotary shaft (), and coupled to the pitch system comprising the bearings () for the shaft and the star-shaped part (). The fastening method couples the rear flange () to the hollow shaft () with a tapered collar () and also to the front flange () through some spacer bushings (). The collar () uses friction to transfer significant moments and axial stresses so as to improve the fastening system, and the direction of the bolts on the collar () and the bolts () on the spacer bushings () simplify inspection and maintenance tasks. 1. Fastening system used for the joint between the rotary shaft and the wind turbine pitch system , characterized in that{'b': 9', '8, 'it comprises a double flange formed by a front flange () and a rear flange () joined together'}{'b': 9', '2', '4, 'the front flange () is anchored to the pusher shaft () and the pitch system formed by the star-shaped part (),'}{'b': 8', '2, 'the rear flange (), through which the hollow rotary shaft goes (), and which works on it by means of friction, and'}{'b': 9', '8', '11, 'both flanges, front () and back (), are coupled together with at least two bushings ().'}2112. Fastening system for wind turbines according to the first claim , characterized in that both flanges have the same shape , their outer contour houses at least one pair of periphery fastening holes for anchoring the bushings () and their inner surface includes some outer-edge orifices for anchoring and central orifices whereby the hollow shaft () goes through them.3. Fastening system for wind turbines according to the first claim , characterized in that{'b': 9', '6', '2, 'the front flange () has through holes for anchoring to the bearing box () that are distributed around the periphery of the circumference inscribed on the triangle, and through holes for anchoring to the hollow shaft () that ...

WIND TURBINE BLADE COMPRISING ROOT END BULKHEAD

A wind turbine blade () for a rotor of a wind turbine () having a substantially horizontal rotor shaft is disclosed. The rotor comprises a hub (), from which the blade () extends substantially in a radial direction when mounted to the hub (), the blade having a longitudinal direction (r) with a tip end () and a root end () and a transverse direction. The wind turbine blade comprises a blade shell defining a profiled contour of the blade and having an inner shell wall, wherein the blade is provided with a bulkhead mounted to the inner shell wall at the root end of the blade via an attachment part, the bulkhead comprising a first side and a second side. The attachment part is integrally formed with or connected to the bulkhead, and the attachment part comprises an elastomeric material. 110161425. A wind turbine blade () having a longitudinal direction (r) with a tip end () and a root end () and a transverse direction , the wind turbine blade comprising a blade shell defining a profiled contour of the blade and having an inner shell wall () , wherein{'b': 10', '50', '60', '50', '54', '55, 'the blade () is provided with a bulkhead () mounted to the inner shell wall at the root end of the blade via an attachment part (), the bulkhead () comprising a first side () and a second side (), characterised in that'}{'b': 60', '50', '60, 'the attachment part () is integrally formed with or connected to the bulkhead (), and in that the attachment part () comprises an elastomeric material.'}2605010. A wind turbine blade according to claim 1 , wherein the attachment part () and the bulkhead () together seal the root end of the blade ().36025. A wind turbine blade according to claim 1 , wherein an outer diameter of the attachment part () is equal to or larger than an inner diameter of the inner shell wall ().46025. A wind turbine blade according to claim 3 , wherein the outer diameter of the attachment part () is at least 1 cm claim 3 , or at least 2 cm claim 3 , larger than the ...

Apparatus and method for aerodynamic performance enhancement of a wind turbine

A deployable aerodynamic component configured to be mounted to a wind turbine. The wind turbine includes at least one rotor blade. The deployable aerodynamic component configured to be positioned in front of an inner portion of the at least one rotor blade, and is structurally configured to cover a substantial portion of the inner portion of the at least one rotor blade in a wind direction during deployment of the deployable aerodynamic component and to allow the passage therethrough of an incoming wind when non-deployed. Further described is a wind turbine including the above-described deployable aerodynamic component and method for aerodynamic performance enhancement of an existing wind turbine, wherein the method includes mounting the above-described deployable aerodynamic component to a wind turbine.

Pitch system for a wind turbine rotor

A pitch system for a wind turbine rotor, comprising a first bearing and a second bearing, each provided with an outer race, an inner race, and at least one row of rolling elements, the first and second bearings being adapted to be arranged between a hub and a blade root portion or extender, to allow rotation of the blade with respect to the hub, wherein the first bearing is adapted to be arranged nearer to the hub than the second bearing in the axial direction, the pitch system further comprising an intermediate body arranged between the first bearing and the second bearing in the axial direction, said intermediate body comprising at least a blade-side part extending between the race of the first bearing that is associated with the blade and the race of the second bearing that is associated with the blade.

MANUFACTURE OF A ROTOR BLADE FOR A WIND TURBINE

A method and manufacturing unit for producing a rotor blade () of a wind turbine () from at least a first rotor blade element (′) and a second rotor blade element (′). The first rotor blade element (′) and the second rotor blade element (′) are positioned in the desired relative arrangement with respect to each other such that a joint gap () remains between the first rotor blade element (′) and the second rotor blade element (′). Adhesive is introduced into the joint gap () for joining the first rotor blade element (′) and the second rotor blade element (′). 151. A method for producing a rotor blade () of a wind turbine () , comprising the steps of:{'b': 11', '11', '12', '12', '13', '11', '11', '12', '12, 'positioning a first rotor blade element (, ′) and a second rotor blade element (, ′) in a desired relative arrangement with respect to each other such that a joint gap () remains between the first rotor blade element (, ′) and the second rotor blade element (, ′) and'}{'b': 11', '11', '12', '12', '13, 'joining the first rotor blade element (, ′) and the second rotor blade element (, ′) by introducing adhesive into the joint gap ().'}21313. The method according to claim 1 , wherein the adhesive is introduced into the joint gap () at a first longitudinal side of the joint gap ().3. The method according to claim 1 ,{'b': '13', 'wherein the joint gap () is sealed along a second longitudinal side which extends opposite the first longitudinal side, and'}{'b': 12', '12', '14', '122, 'wherein during production of the second rotor blade element (, ′), a seal (, ) is integrated into the second rotor blade element.'}4131313. The method according to claim 1 , wherein the adhesive is introduced starting at one end of the joint gap () along a longitudinal extension of the joint gap () stepwise or continuously proceeding in the joint gap ().51320. The method according to claim 1 , wherein the adhesive is introduced in the joint gap () with an adhesive application apparatus (). ...

WIND TURBINE ROTOR BLADE WITH A PROFILE WITH A THICK TRAILING EDGE

A wind turbine rotor blade having a longitudinal axis, a blade root; a blade tip, a pressure side, a suction side and an aerodynamic profile which, in a longitudinal section of the rotor blade, has a profile chord and a thick trailing edge. The rotor blade includes a multiplicity of flow deflection elements which are arranged on the thick trailing edge and have respective inflow surfaces which are shaped and arranged such that a radial flow running in the direction from the blade root toward the blade tip is diverted by the inflow surface in the direction of the profile chord. 1. A wind turbine rotor blade defining a longitudinal axis , the wind turbine rotor blade comprising:a rotor blade body having a blade root, a blade tip, a pressure side, a suction side, a longitudinal section, and an aerodynamic profile;said aeorodynamic profile having a profile chord and a thick trailing edge in said longitudinal section of the rotor blade;a plurality of flow deflection elements arranged on said thick trailing edge of said aerodynamic profile; and,each of said flow deflection elements having an inflow surface arranged and configured to divert a radial flow flowing from said blade root toward said blade tip in the direction of said profile chord.2. The wind turbine rotor blade of claim 1 , wherein each of said inflow surfaces are concavely curved.3. The wind turbine rotor blade of claim 1 , wherein:said chick profile trailing edge has a height (H); and,said flow deflection elements extend over the entire height (H) of said thick profile trailing edge.4. The wind turbine rotor blade of claim 1 , wherein:each one of said flow deflection elements has a first side directed toward said blade tip and disposed opposite the inflow surface corresponding thereto; and,said first side of each of said flew deflection elements has a planar first surface arranged in the direction of said profile chord.5. The wind turbine rotor blade of claim 1 , wherein:said thick profile trailing edge ...

WIND TURBINE BLADE HAVING A CORROSION PROTECTION STRUCTURE, AND WIND TURBINE HAVING THE SAME

The present invention relates to a wind turbine component, having a connecting portion for connecting the wind turbine component to another turbine component and at least part of the connecting portion is formed of a first type of metal, characterized in that: the connecting portion is further provided with an additional part formed of a second type of metal which is connected to the metallic part of the connecting portion; and the second type of metal is more active than the first type of metal, whereby the additional part forms a sacrificial anode. The present invention further relates to a wind turbine having the above component. 1. A wind turbine blade having a connecting portion at a root section for connecting the wind turbine blade to a hub , the root section provided with a plurality of inserts extending into the blade spaced around the root section by which the connection can be made between blade and hub , the inserts having exposed end faces and being formed of a first type of metal , characterized in that additional parts of a second type of metal are connected to the inserts , the second type of metal being more electrochemically active than the first type of metal , whereby the additional part forms a sacrificial anode.2. (canceled)3. The wind turbine blade according to claim 1 , wherein claim 1 , the inserts are of cylindrical form at end region adjacent their exposed face claim 1 , and the additional parts are in the form of ring secured on the outside of the cylindrical surface.4. The wind turbine blade according to claim 1 , wherein claim 1 , adhesive is provided between the insert and the blade root section to fasten the insert therein claim 1 , and the additional part is arranged at the boundary claim 1 , which is facing exterior environment claim 1 , of the insert and the blade root section; andthe boundary between the additional part and the blade root section is also covered with adhesive so as to prevent water/moisture etc. from contacting ...

Wind Turbine Rotor Blade Components And Methods Of Making Same

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

WIND TURBINE BLADE HAVING A ROOT REGION WITH ELONGATED FASTENING MEMBERS PROVIDED WITH METAL FIBRES

A wind turbine blade for a wind turbine is a shell structure of a fibre-reinforced composite and comprises a root region and an airfoil region. The root region has ring-shaped cross section and comprises a plurality of elongated bushings with an inner thread and embedded interspaced in the fibre-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. Each fastening member is provided with a notch in the periphery thereof. A rod-shaped locking element passes through the notch in engagement therewith. The locking element is fixedly and tightly fitting arranged in a through-going circular bore extending through the wall of the root region. 1. A wind turbine blade for a wind turbine rotor comprising a hub from which the wind turbine blade extends when mounted to the hub , the wind turbine blade including a shell structure of a fibre-reinforced composite material comprising fibres embedded in a polymer matrix , the wind turbine blade extending in longitudinal direction and having a profiled contour including a pressure side and a suction side as well as a leading edge and a trailing edge , said edges defining a chord plane therebetween , when seen in the longitudinal direction the profiled contour comprising a root region with a root end face , an airfoil region and optionally a transition region between root region and the airfoil region ,the root region having a ring-shaped cross section with an outer surface and an inner surface,the root region comprising a plurality of elongated fastening members provided with fastening means and embedded mutually spaced apart in the fibre-reinforced polymer so as to substantially follow a circumference of the root region and allow access from the outside to the fastening means used for mounting the blade to the hub,the fastening members comprising an outer surface, a first end arranged at the root end face and a second end opposite the first end ...

Wind turbine blade with elongated fastening members in the root region thereof

A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. Each fastening member 7 is provided with a notch 60 ′ in the periphery 11 thereof. A rod-shaped locking element 61 passes through the notch 60 ′ in engagement therewith. The locking element 61 is fixedly and tightly fitting arranged in a through-going circular bore 65 extending through the wall of the root region.

WIND TURBINE BLADE WITH TAPERING ROOT BUSHINGS

A wind turbine blade for a wind turbine is a shell structure of a fibre-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a plurality of elongated bushings with an inner thread and which are embedded interspaced in the fibre-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads . The bushings are formed conically tapering from a second end towards a first end thereof, the first end of the bushing being arranged at the end face of the root region. 1. A wind turbine blade for a wind turbine rotor comprising a hub from which the wind turbine blade extends when mounted to the hub , the wind turbine blade including a shell structure of a fibre-reinforced composite material comprising fibres embedded in a polymer matrix , the wind turbine blade extending in longitudinal direction and having a profiled contour including a pressure side and a suction side as well as a leading edge and a trailing edge , said edges defining a chord plane therebetween , when seen in the longitudinal direction the profiled contour comprising a root region with a root end face , an airfoil region and optionally a transition region between root region and the airfoil region ,the root region having a ring-shaped cross section with an outer surface and an inner surface,the root region comprising a plurality of elongated fastening members provided with fastening means and embedded mutually spaced apart in the fibre-reinforced polymer so as to substantially follow a circumference of the root region and allow access from the outside to the fastening means used for mounting the blade to the hub,the fastening members comprising a first end arranged at the root end face, a second end opposite the first end thereof and an outer periphery comprising an outer surface, an inner surface, a first lateral face and an opposite second lateral ...