摘要:
The present invention relates to a turbine (2) for location in a fluid flow. Aspects of the present invention aim to overcome the problems associated with complex marine turbines and provide a simple, robust and economic design. The blades (22) may be located downstream of the turbine body and means (8, 10, 18) are provided to enable relative rotational movement between the support (4) and the turbine such that the turbine aligns with the fluid flow and at least one bearing (28) is configured to be in contact with the fluid. There may also be a generator (34, 36) for a marine turbine comprising a rotor (34) arrangement and stator arrangement (36) wherein the generator is flooded with fluid in which the marine turbine is immersed. Additionally or alternatively, the rotor and/or the stator is provided with a matrix, layer and/or coating to provide a fluid sealing function. There may also be provided an axial load bearing assembly including a braking means (40) arranged to control rotation of the shaft.
摘要:
Die Erfindung betrifft ein Verfahren zum Drehen einer Komponente einer Windenergieanlage durch Verfahren einer Verstelleinrichtung, wobei die Verstelleinrichtung mindestens zwei jeweils mindestens einen Elektromotor aufweisende Verstellantriebe zum Verfahren der Verstelleinrichtung umfasst, und wobei während des Verfahrens der Verstelleinrichtung der Elektromotor mindestens eines der mindestens zwei Verstellantriebe mit einer anderen Drehzahl betrieben wird, als der Elektromotor mindestens eines anderen der mindestens zwei Verstellantriebe. Die Erfindung betrifft außerdem eine entsprechende Vorrichtung.
摘要:
Die Erfindung betrifft ein Verfahren zum Betreiben einer Windenergieanlage (10), wobei die Windenergieanlage (10) einen Rotor (11) mit einer Rotorachse und wenigstens ein am Rotor (11) angeordnetes Rotorblatt (15, 15') aufweist, wobei das Rotorblatt (15, 15') um eine Rotorblattachse mit einem vorbestimmten Rotorblattverstellwinkel einstellbar ist oder eingestellt wird. Das Verfahren wird dadurch weitergebildet, dass das wenigstens eine Rotorblatt (15, 15') in eine Ruheposition gedreht wird, nach Erreichen einer ersten vorbestimmten Drehposition des Rotorblatts (15, 15') die Drehung des Rotorblatts (15, 15') gebremst wird und die in Folge des Bremsvorgangs erreichte Stillstandsposition des Rotorblatts erfasst wird. Weiterhin betrifft die Erfindung eine Windenergieanlage (10) mit einem Rotor (11) und wenigstens einem am Rotor (11) angeordneten, winkelverstellbaren Rotorblatt (15, 15').
摘要:
A blade (10) for a rotor of a wind turbine (2) has a substantially horizontal rotor shaft, the rotor comprising a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8). The blade comprises a profiled contour including a leading edge (18) and a trailing edge (20) as well as a pressure side and a suction side, the profiled contour when being impacted by an incident airflow generating a lift. The profiled contour is divided into a root region (30) with a substantially circular profile closest to the hub, an airfoil region (34) with a lift generating profile furthest away from the hub, and a transition region (32) between the root region (30) and the airfoil region (34). The profile of the transition region (32) gradually changes in the radial direction from the circular profile of the root region to the lift generating profile of the airfoil region. The suction side comprises at least a first zone (40, 42), which extends substantially in the direction of the incident airflow, and which is positioned in a zone of a cross-flow. The first zone (40, 42) comprises a first barrier generating means (x06) adapted to generating a barrier of airflow, which extends essentially in the direction of the incident airflow, the barrier of airflow being of sufficient strength and length so as to effectively reduce the cross-flow.
摘要:
Disclosed isa horizontal axis wind turbine including: a rotor; a nacelle; a tower; an independent pitch control device; and a yaw control device, wherein the horizontal axis wind turbine is an up-wind type one including a waiting mode, wherein (a) the independent pitch control device performs a first step of changing all the blades to be in feathering states when the wind speed exceeds the predetermined value, a second step of changing the blades to be in reverse feathering states one by one sequentially, and a third step of holding all the blades in the reverse feathering states, and (b) the yaw control device controls a yaw brake to take a braking value allowing the yaw rotation when the wind speed exceeds the predetermined value, wherein the rotor is allowed to swing to a leeward side of the tower by executing the control operations (a) and (b) as the waiting mode.
摘要:
A speed reducer and a yaw drive apparatus for a wind power generation apparatus, where the speed reducer has high efficiency and a short axial length, and suitable for the yaw drive apparatus. The speed reducer has three stages for speed reduction. The total reduction gear ratio of a first stage speed reducing portion 10 and a second speed reducing portion 20 is set to 1/6 to 1/60, and a third stage speed reducing portion 30 is constructed from an eccentric oscillating-type speed reduction mechanism having an internal gear member 32, external gears 34, crankshafts 35, and a carrier 37. The reduction gear ratio of the eccentric oscillating-type speed reduction mechanism is set to 1/50 to 1/140, and the total reduction gear ratio of the speed reducer is set to 1/1000 to 1/3000. A yaw drive method and the yaw drive apparatus can reduce noise, and the yaw drive apparatus is inexpensive and reduced in size.
摘要:
Eine Windenergieanlage umfasst einen Außenring (20), einen Innenring (10) und für ein Verdrehen der Ringe gegeneinander zwischen einem Innenmantel des Außenrings (22) und einem Außenmantel des Innenrings (12) angeordnete Wälzkörper (30), wobei einer der Ringe an besagtem Mantel wenigstens entlang eines Teils des Umfangs Sensorhilfsmittel (42) umfasst, die zusammen mit im anderen Ring vorgesehenen Sensorhauptmitteln (44) derart gestaltet sind, dass eine Verdrehposition der beiden Ringe zueinander erfassbar ist.
摘要:
Ein Turbolader weist mindestens einen Turbinenrotor (4) und mindestens einen auf gleicher Welle (5) sitzenden Kompressorrotor (21) auf. Die, jeweils Flügeln aufweisenden, Rotoren (4, 21) sind jeweils in einem Gehäuseabschnitt (2, 3) eines Turboladergehäuses (2, 3, 6) untergebracht. Im Inneren des Gehäuses (2, 3, 6) ist eine wenigstens einem Rotor (4, 21) radial außen gegenüberliegende Bremsfläche (B) vorgesehen. Der Rotor (4, 21) seinerseits ist mit einer fliehkraftabhängig wirksamen Gegenbremsfläche (G) verbunden.
摘要:
Disclosed herein is a yaw brake system including a multi-disk member (40) disposed in an upper portion of a tower frame (30) of wind generator and including at least two disks (41, 42), and a braking member (50) disposed in a lower end of a nacelle frame (20) of the wind generator, and provided to brake yawing of a nacelle (20) by interlocking with the multi-disk member (40). In accordance with the disclosure, it is possible to prepare for buildup of equipment, such as a blade, a hub, or a nacelle (20), depending on an increase in power of wind power generation, and at the same time to more effectively brake yawing of the nacelle (20) due to a rapid change in wind direction while overcoming a limited space in the nacelle.