179results about "Wind motor commissioning" patented technology

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor loading and a favorable yaw orientation to reduce pitch activity. Yaw alignment of the wind turbine is adjusted in accordance with the favorable yaw orientation and the pitch of each rotor blade is adjusted in accordance with the determined pitch to reduce or counter asymmetric rotor loading.

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor loading and a favorable yaw orientation to reduce pitch activity. Yaw alignment of the wind turbine is adjusted in accordance with the favorable yaw orientation and the pitch of each rotor blade is adjusted in accordance with the determined pitch to reduce or counter asymmetric rotor loading.

The layout and configuration of wind turbines in a wind power plant includes identifying constraints of a power plant site and defining at least one region in the site for placement of a plurality of wind turbines. The wind state at the region in the site is determined. An actual wind condition at the various possible wind turbine locations within the site is determined by modeling the wind state with wake effects at the respective wind turbine locations, the wake effects resulting from cumulative placement of other wind turbines at various locations in the region. Individual wind turbine configuration and location within the region is then selected as a function of the actual wind conditions that each of the individual wind turbine locations to optimize power output of the individual wind turbines. The selection of turbine configuration includes selection of a turbine hub height that minimizes wake loss of the individual wind turbines as a function of the actual wind conditions predicted for the turbine location.

A system and method provide a proactive mechanism to control pitching of the blades of a wind turbine to compensate for rotor imbalance during normal operation by pitching the blades individually or asymmetrically, based on turbulent wind gust measurements in front of the rotor, determined before it reaches the rotor blades.

A method for balancing a rotor of a rotary machine, wherein the rotor includes at least two rotor blades and a rotor shaft, includes receiving at least one measurement of either a load, an acceleration, or a displacement that pertains to at least one bending moment acting on the rotor shaft, determining at least one value of the at least one bending moment acting on the rotor shaft based, at least in part, on the received at least one measurement, and determining a pitch offset angle value of at least one rotor blade that facilitates reducing the at least one bending moment acting on the rotor shaft.

Disclosed is a method of reducing a structural unbalance in a wind turbine rotor with pitch control and a control device for performing the method are provided. The method comprises the steps of: detecting a magnitude of the structural unbalance and its phase in relation the rotor's azimuth (θ) on the basis of a measurement of the rotor's azimuth (θ) and a measurement of the rotor speed or the generator speed (ω), establishing individual pitch angle offsets for each blade of the rotor on the basis of the magnitude and the phase, and adding the individual pitch angle offsets to the respective pitch angles of the blades of the rotor.

A method for damping edgewise oscillations in one or more blades of a wind turbine includes the steps of detecting if one or more of the blades oscillates edgewise during operation of the wind turbine, and substantially cyclically generating a pitch angle difference between at least two of the blades. Further provided is an active stall controlled wind turbine and use hereof.

A method for determining wind turbine location within a wind power plant based on at least one design criteria. A wind turbine layout including at least one wind turbine location is prepared and site conditions at each wind turbine location are determined. One or more plant design metrics are evaluated in response to the site conditions. The plant design metrics are analyzed in response to the site conditions. The method further includes applying constraints to the wind turbine layout and comparing the plant design metrics to the design criteria and constraints. Thereafter, the wind turbine locations are selectively adjusted within the layout in response to the comparing step until a stop criteria is reached.

A wind turbine rotor load control. The pitch of the blades is controlled in a conventional manner by a command component, a rotor blade pitch command signal. A storage contains stored values of a set of moments for various wind speeds. A moment sensor provides a moment signal output. An instantaneous wind speed indicator provides an instantaneous wind speed value output. A conversion logic connected to the moment signal and to the instantaneous wind speed value, provides a calculated pitch modulation command. Combining logic connected to the calculated blade pitch modulation command and to the collective pitch command, provides a combined blade pitch command, which includes compensation for instantaneous moment deviations of the wind turbine.

The layout and configuration of wind turbines in a wind power plant includes identifying constraints of a power plant site and defining at least one region in the site for placement of a plurality of wind turbines. The wind state at the region in the site is determined. An actual wind condition at the various possible wind turbine locations within the site is determined by modeling the wind state with wake effects at the respective wind turbine locations. Individual wind turbine configuration and location within the region is then selected as a function of the actual wind conditions each of the individual wind turbine locations to optimize power output of the individual wind turbines. The selection of turbine configuration includes selection of a turbine hub height that minimizes wake loss of the individual wind turbines as a function of the actual wind conditions predicted for the turbine location.

A wind of the type having a tower and a nacelle with a rotor rotatably connected to the nacelle for rotating about a rotor axis and having a plurality of equally spaced blades has the rotor balanced by firstly taking a measurement of torsional vibration and then by using photographic techniques to analyze dynamic imbalance caused by differences in the angle of attack of the blades. The torsional vibration is detected using two sensors at positions mirrored exactly in distance to the left and right of the rotor axis and detecting vibration in the axial direction. The angle of attack is measured by analyzing images of the tip of the blade where, during the analysis, distortion in angles at different locations in the image are corrected, in dependence upon a prior analysis of an image taken by the camera relative to a known image.

The invention discloses a wind turbine generator dynamic response analysis method based on multi-platform co-simulation, and belongs to the technical field of wind turbine generators. Aiming at structural components of a wind turbine generator, 3D solid modeling is completed through a Creo platform, and a Creo model is imported into an ABAQUS finite element platform. According to the actual working conditions, the correct constraint relationship of each part of a finite element model of a whole unit in the ABAQUS is set, and simulation is conducted to obtain the intrinsic frequency and mode shape of an impeller assembly and the whole unit. Coupling response between the inside of the unit, that is, between an impeller and a tower, is discussed through response simulation, the natural vibration characteristics of key components and the whole unit are studied by using a finite element simulation method, the dynamic response characteristics of the wind turbine generator are obtained by using time-varying wind pressure distribution as the main excitation load, the wind turbine generator dynamic response analysis method based on multi-platform co-simulation has significances to improvingthe structure design of the unit and formulating effective diagnosis strategies.

An electric assembly for electrically connecting at least one wind turbine being located off-shore with an electric subsea cable being connected to an on-shore power grid is provided. The electric assembly has (a) a transformer for transforming a first voltage level being provided by the at least one wind turbine to a second voltage level of the subsea cable, and (b) an external equipment being electrically and mechanically connected to the transformer for controlling an operation of at least the transformer. The transformer and the electric equipment are formed by a preinstalled package, which can be mechanically handled as a single piece. Further, a wind turbine having such an electric assembly, a wind turbine cluster having such a wind turbine, and a method for mounting such an electric assembly to a tower of a wind turbine are provided.

A method and apparatus for aligning an input shaft of a wind turbine generator with an output shaft of a wind turbine are disclosed. Preferably, the method includes placing a push plate of a wind turbine alignment tool into pressing contact with a selected support flange of a wind turbine generator identified by a misalignment measurement device. With the push plate positioned, an indexing means of the wind turbine alignment tool is advanced along an adjustment link member of the wind turbine alignment tool to impart an alignment force onto the selected support flange to align the input shaft of the wind turbine generator with the output shaft of the wind turbine. The method preferably concludes by rechecking the alignment of the input shaft of the wind turbine generator with the output shaft of the wind turbine.

A transporting tool for tower transporting sections of wind turbine tower by railway, road and sea transport vehicles that includes a lower module, with bottom clamps and an upper module, with upper clamps, chocks mounted to the tower module, and fastening elements that combined allow anchoring the tower section, for transport.

A vibration-resistant wind turbine and process for operation is provided. The wind turbine has a rotor with at least two blades, each of which includes an inclinometer arrangement with at least two axes, and an evaluating unit. The evaluating unit determines the bending and / or twisting of the blade relative to the longitudinal axis of the blade on the basis of signals from the inclinometer arrangement for each blade during operation. Each rotor blade further has at least one liquid tank which is capable of receiving or transferring liquid from or to a liquid reservoir via a transfer mechanism in response to the determined bending and / or twisting of the rotor blades to reduce vibration caused by imbalances, thereby extending the service life of the wind turbine.

An electric assembly for electrically connecting at least one wind turbine being located off-shore with an electric subsea cable being connected to an on-shore power grid is provided. The electric assembly has (a) a transformer for transforming a first voltage level being provided by the at least one wind turbine to a second voltage level of the subsea cable, and (b) an external equipment being electrically and mechanically connected to the transformer for controlling an operation of at least the transformer. The transformer and the electric equipment are formed by a preinstalled package, which can be mechanically handled as a single piece. Further, a wind turbine having such an electric assembly, a wind turbine cluster having such a wind turbine, and a method for mounting such an electric assembly to a tower of a wind turbine are provided.

A wind turbine platform is configured for floating in a body of water and includes a hull defining a hull cavity therein. The hull is formed from reinforced concrete. A tower is configured to mount a wind turbine and is also connected to the hull. An anchor member is connected to the hull and to the seabed.