摘要:
The invention relates to a method of controlling a wind turbine (10) comprising a nacelle (12), a rotating hub (13), a first rotor blade (171) and a second rotor blade (172). The method comprises the steps of i) measuring noise (27) by means of at least one noise detection device (21), the noise (27) being generated due to an interaction between the first rotor blade (171) of the wind turbine (10) and airflow (26) impinging on the first rotor blade (171); ii) determining the angular distribution and the intensity of the noise (27) by means of a controller (23); and iii) choosing the operational parameters of the wind turbine (10) based on the measured noise (27) by means of the controller (23) such that the performance of the wind turbine (10) is optimized. The choice of operational parameters includes individual pitching of the second rotor blade (172) and/or yawing the nacelle (12) of the wind turbine (10). Furthermore, the invention relates to a wind turbine (10) which is controlled by such a method.
摘要:
The present disclosure is directed to a system and method 100 for reducing noise associated with a wind turbine 10, more particularly fan noise when the wind turbine 10 is operating under a reduced noise operating mode. More specifically, the method 100 includes operating 102 the wind turbine at a predetermined rotor speed that is associated with a predetermined power output. The method also includes receiving 104 a request to operate in a reduced noise operating mode and in response to the request, reducing 106 the predetermined rotor speed so as to provide a reduced power output. In response to reducing the predetermined rotor speed, another step 108 includes reducing a speed of one or more cooling fans of the wind turbine.
摘要:
The invention describes a method of optimising a wind park construction, which wind park (2) comprises at least a first wind turbine (4) and a second wind turbine (6, 6'), wherein a first blade topology (44) is selected for the first wind turbine (4) depending on a noise optimisation parameter which is measured and/or predicted at a reference position (24) at a distance (D) from the wind park (2), and a second blade topology (46) is selected for the second wind turbine (6, 6') depending on an energy efficiency optimisation parameter. The invention also describes a wind turbine (4, 6, 6') for such a wind park (2) and a wind park (2) comprising at least such a first wind turbine (4) and a second wind turbine (6, 6').
摘要:
A wind turbine comprises a wind-driven rotor for converting wind energy to a mechanical driving force, a power converter for converting the driving force to exploitable power, and a drive train for rotatably transmitting the driving force from the wind-driven rotor to the power converter. The drive train includes: at least one rotatable driving element configured to provide at least one torsional resonance frequency in the drive train; a first detuner having at least one first mass element with a first mass inertia and at least one first elastic element with first elastic properties; and a second detuner having at least one second mass element with a second mass inertia and at least one second elastic element with second elastic properties. The first and second mass elements and first and second elastic elements are arranged to rotate during operation of the wind turbine. The torsional resonance frequency is influenced by the first and second mass inertias and the first and second first elastic properties.
摘要:
A method (100) for controlling the amplitude modulation of noise generated by a wind turbine (10) is disclosed. The method (100) may generally include determining an angle of attack (54) of a rotor blade (12) of a wind turbine (10) and maintaining the angle of attack (54) at a substantially constant value during rotation of the rotor blade (12) in order to reduce the amplitude modulation of the noise generated by the wind turbine (10).
摘要:
A system (400) for use in operating a plurality of wind turbines (435,440,445) is provided. The system includes a plurality of wind turbine controllers (200), each wind turbine controller of the plurality of wind turbine controllers operatively coupled to a wind turbine of a plurality of wind turbines, and a site controller (415) coupled in communication with the plurality of wind turbine controllers and is configured to determine an aggregate noise level at a geographic position based on a plurality of noise levels associated with the plurality of wind turbines, compare the aggregate noise level to a target noise level associated with the geographic position, and when the aggregate noise level exceeds the target noise level, transmit an operational adjustment to a first wind turbine controller of the plurality of wind turbine controllers, wherein the first wind turbine controller is operatively coupled to a first wind turbine, and a noise level associated with the first wind turbine is reduced when the first wind turbine controller applies the operational adjustment.
摘要:
A system (10) is provided for estimating a condition of a non-conductive hollow structure exposed to a lightning strike (18). The structure has an internal cavity (20). The system (10) includes a pressure transducer (22) to measure a pressure (23) of an acoustic wave (24) generated within the internal cavity (20) due to the lightning strike (18). The system (10) further includes a controller (26) coupled to the pressure transducer (22), to receive the measured pressure (23) from the pressure transducer (22), and to process the condition of the structure, based on the measured pressure (23).
摘要:
Gegenstand der Erfindung sind ein Verfahren und eine Anordnung zum Vermessen einer Windenergieanlage (1). Die Windenergieanlage (1) wird entsprechend einer Mehrzahl von Parametersätzen (P1, P2, P3) eingestellt. Es werden den Parametersätzen (P1, P2, P3) zugeordnete Messsätze (M1, M2, M3) aufgenommen, wobei jeder Messsatz (M1, M2, M3) mehrere zeitlich aufeinanderfolgende Messvektoren (V1...Vn) umfasst. Erfindungsgemäß wird in Zyklen zwischen den Parametersätzen (P1, P2, P3) gewechselt, und es werden für jeden Parametersatz (P1, P2, P3) in mehr als einem Zyklus Messvektoren (V1...Vn) aufgenommen. Durch die quasi-parallele Vermessung mehrerer Parametersätze (P1, P2, P3) werden eine erhebliche Zeitersparnis sowie eine verbesserte Vergleichbarkeit der Messungen erreicht.