175results about "Wind motor commissioning" patented technology

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.

A wind turbine is provided, comprising a rotor arranged at a nacelle, the nacelle supported by a tower, and a damper including a movable mass. The damper is adapted for variably adjusting a frequency response of the wind turbine.

The present disclosure is directed to systems and methods for validating wind farm performance improvements so as to optimize wind farm performance. In one embodiment, the method includes operating, via a controller, the wind farm in a first operating mode. Another step includes collecting a first set of operating data, via a processor, during the first operating mode. A further step includes operating, via the controller, the wind farm in a second operating mode. The method also includes collecting a second set of operating data, via the processor, during the second operating mode. Next, the method includes normalizing the first and second sets of operating data based on wind speed distributions. As such, another step includes comparing, via the processor, the normalized first and second sets of operating data so as to validate one or more wind farm performance measurements.

The present invention relates to a method of correcting rotor imbalance and a wind turbine thereof. The correction method comprises measuring the vibrations within at least one time window and determining an imbalance factor and an imbalance phase. The values of the parameters in the equation for calculating the correction action are then updated based on the imbalance factor and an imbalance phase. A correction angle for each of the wind turbine blades is calculated using these adjusted parameters. The correction angle is used to aerodynamically balance the rotor, and a model may be used to determine the initial values of the parameters. Another imbalance factor and imbalance phase is determined based on another set of measurements. This imbalance factor is then used to calculate a mass moment for correcting the mass imbalance in the wind turbine blades. The weight and location of a balancing mass is finally calculated based on this mass moment and installed in the respective wind turbine blades.

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.

A wind turbine is proposed which has a plurality of construction sections each having at least one connection region for connecting at least two construction sections to one another, a plurality of fasteners to fasten at least two connection regions of two construction sections to one another, and an identifier for each fastener to distinguish it from other fasteners. A testing device to test the fasteners of a construction section of a wind turbine having a tool section for tightening and/or retightening the fasteners to obtain a desired tightness and/or to test the fasteners with regard to tightness, and a detection unit for detecting an identifier of each fastener.

Tool for tower transport, of the type that are used for transporting large-sized parts, such as sections (2) of wind turbine tower, for application in any means of transport (railway, road and sea) that includes a series of modular parts made up by some modules (3 and 4), some clamps (5 and 6), some chocks (7), a balancing tool (27) and some fastening elements (20, 33) that combined allow anchoring any type of section (2) in any means of transport.

The invention relates to a device for suppressing the resonant vibration of a large-scale wind generating set, and particularly to a mechanical device used for suppressing the resonant vibration by changing the inherent frequency of a wind-driven generator by altering the mass distribution of the large-scale wind generating set. According to the mechanical device for suppressing the resonant vibration of the large-scale wind generating set, vibration data of the wind generating set can be collected in real time and a response is made accordingly in time; the rotating parts of blades do not need to be adjusted, and the wind energy utilization ratio is not reduced.

A method of forming a balanced rotor blade assembly includes measuring a weight of a plurality of sub-components of the rotor blade assembly excluding a core. A configuration of a core of the rotor blade assembly is determined. In combination, the core and the plurality of sub-components achieve a target weight distribution and moment. The core is then fabricated and assembled with the plurality of sub-components to form a rotor blade sub-assembly.

The wind/tidal power generation bearing for supporting a main shaft of a wind power generator or a main shaft of a tidal power generator includes a rolling bearing including an inner ring, an outer ring and a plurality of rollers disposed between the inner ring and the outer ring. The plurality of rollers are arranged in a circumferential direction such that axes of alternate rollers or alternate sets of a plurality of rollers intersect each other, thereby reducing a bearing width as compared to a double row tapered roller bearing or the like of the conventional art. Therefore, in the wind power generator or the tidal power generator, a space in an axial direction can be saved as compared to the conventional art.

The invention relates to a variable-propeller system and a blade zero position calibrating method. The variable-propeller system comprises a variable-propeller bearing, a position detecting assembly and a trigger assembly, wherein the position detecting assembly comprises a first switch assembly for detecting whether a blade is at a first angle or not and a second switch assembly for detecting whether the blade is at a second angle or not; the trigger assembly comprises a first trigger part and a second trigger part which are arranged in the peripheral direction of a rotary ring in a spaced mode; when the trigger part and the second trigger part rotate along with the rotary ring, the first trigger part can trigger the first switch assembly and the second trigger part can trigger the secondswitch assembly; and when the first trigger part rotates to the trigger range of the first switch assembly, the second trigger part is positioned in the trigger range of the second switch assembly. The variable-propeller system can be used for checking the practical position of the blade and also can be used for calibrating the zero position of the blade, so that safe operation of a wind generating set is guaranteed.