摘要:
A method facilitates lubrication of components. The method includes coupling a blade to a pitch control mechanism such that a bearing is positioned between the blade and the pitch control mechanism. The method further includes coupling a control system to the pitch control mechanism and configuring the control system to control the blade pitch mechanism for controlling movement of the blade and rotate the blade from a first position to a second position when a predetermined amount of time has elapsed.
摘要:
An adjusting device for adjusting the rotation angle position of the rotor of a wind energy system should be improved by the invention, whereby a complicated processing of the brake disc previously used for engagement of the drive is no longer necessary, and whereby said brake disc can be flexibly arranged in an area with sufficient construction space. For this purpose, the adjusting device has at least one force transducer wheel and/or a force transducing disc which is mounted or can be mounted on a shaft (1) of the drive train which is switched downstream from the rotor, which is structured for engagement of a force transmitting means, and is designed as an independent component. The device also has a drive means for producing a drive force, and at least one force transmission means for transmitting the drive force to the force transducer wheel and/or the force transducing disc.
摘要:
A method for controlling a rotational speed of a rotor having at least one rotor blade, a rotor shaft, and an electrical generator coupled thereto. The method includes controlling a torque of the rotor shaft by controlling a torque of the electrical generator, alternating between changing an angle of pitch of the at least one rotor blade and maintaining the angle of pitch of the at least one rotor blade substantially constant, and maintaining a substantially constant rotational speed of the rotor during variable wind speeds above a predetermined rated wind speed.
摘要:
The device for adjusting a rotor blade of a wind energy turbine is provided with a driving device (12) for driving an adjusting element (24) for selectably rotating the rotor blade (26) in both directions about its longitudinal axis (28), an energy storage unit (30) and a free-running means (32) adapted to be selectively activated, said free-running means (32), in its activated state, allowing rotation of the rotor blade (26) by means of energy stored in the energy storage unit (30) only in one of the two directions up to a desired rotational position.
摘要:
The hydraulic brake system comprises a piston/cylinder unit (14) for activating and releasing a brake (12), comprising a volume (16) adapted to have a pressurized working fluid supplied thereto for moving the piston (24) from a braking position into a release position for releasing the brake. Further, the hydraulic brake system comprises a supply line (18) for the supply of working fluid from a reservoir (22), a discharge line (30) for the discharge of working fluid from the volume (16) of the piston/cylinder unit (14), a first valve (34) and an element (36) for determining the flow resistance, a bypass line (32) provided with a second ON/OFF valve (38) and arranged for a flow in parallel to the discharge line (30). At the start of a braking process, among the two ON/OFF valves (34,38) which in the released condition of the brake are in the closed condition, the first ON/OFF valve (34) is opened and, upon lapse of a presettable first time period (Tdelay1) from the opening of the first ON/OFF valve (34), the second ON/OFF valve (38) is opened.
摘要:
The modular kit for a tower has a height ranging between a minimum height and a maximum height, in particular for a wind energy turbine, comprises a first conical tower segment (10) comprising a steel tube having a predetermined length (11), a second conical tower segment (12) comprising a steel tube having a predetermined length (12), and a first cylindrical tower segment (14) comprising a steel tube having a length between a predetermined minimum length and a predetermined maximum length. The length of the first cylindrical tower segment (14) can be adapted to the necessary height of the tower between its minimum height and its maximum height. The minimum height is the sum of the predetermined lengths (11,12) of the first and second conical tower segments (10,12) and the minimum length of the first cylindrical tower segment (14). The maximum height is the sum of the predetermined lengths (11,12) of the first and second conical tower segments (10,12) and the maximum length of the first cylindrical tower segment (14).
摘要:
In order to provide an attachment element for fastening of attachment parts (P) to a metal inner tower wall (T) of a tower of a wind energy system, comprising a first end side for welding to the inner tower wall (T) and a second end side for fastening an attachment part (P), said second side opposite the first end side, wherein the resultant weld connection between said attachment element and the tower wall is under a reduced stress, thereby enabling the connection point to be assigned to a higher fatigue class, it is proposed that such an attachment part have a total cross-sectional material thickness that is reduced near the first end side in comparison to a total material thickness in a cross-section shifted toward the second end side.
摘要:
A method facilitates lubrication of components. The method includes coupling a blade to a pitch control mechanism such that a bearing is positioned between the blade and the pitch control mechanism. The method further includes coupling a control system to the pitch control mechanism and configuring the control system to control the blade pitch mechanism for controlling movement of the blade and rotate the blade from a first position to a second position when a predetermined amount of time has elapsed.
摘要:
A windfarm including a plurality of wind turbines, an ice detection sensor adapted to detect an icing condition of at least one of said plurality of wind turbines, and a main controller connected to said ice detection sensor and to at least two of said wind turbines, wherein the main controller is adapted to control the operation of said at least two wind turbines based on an icing condition detected by said ice detection sensor. A method for controlling the wind farm is also disclosed.
摘要:
A ventilation arrangement for a wind turbine includes an air inlet opening located in a nose cone of said wind turbine, a manhole cover for covering a manhole of a rotor hub of said wind turbine, the manhole cover providing a vent opening for venting hot air from an internal space of said rotor hub, and a flexible piping establishing fluid communication between the internal space of the rotor hub and the air inlet opening.