A wind turbine and a method of operating a wind turbine with a rotational speed exclusion zone

A wind turbine, speed technology, applied in the direction of wind engine control, wind engine, wind motor combination, etc., can solve the problem of increasing the amount of data processing, not providing, etc., to achieve the effect of increasing vibration

Active Publication Date: 2018-05-11
YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The width of the exclusion zone can be dynamically determined by performing a perturbation test on the collected data, but no further details are provided about the perturbation test and how the test results are analyzed to determine the width of the exclusion zone
This automated perturbation testing and subsequent analysis further increases the amount of data processing required

Method used

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  • A wind turbine and a method of operating a wind turbine with a rotational speed exclusion zone
  • A wind turbine and a method of operating a wind turbine with a rotational speed exclusion zone
  • A wind turbine and a method of operating a wind turbine with a rotational speed exclusion zone

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Embodiment Construction

[0089] figure 1 An exemplary embodiment of a wind turbine 1 comprising a wind turbine tower 2 is shown. The nacelle 3 is arranged on top of the wind turbine tower 2 and is connected to the wind turbine tower 2 via a yaw mechanism (not shown). A rotor comprising at least two wind turbine blades 4 , shown here as 3 blades, is rotatably connected to a hub which is further connected via rotating rods to a drive train arranged in the nacelle 3 . Each wind turbine blade 4 is rotatably connected to the hub via a pitch mechanism 5 controlled by a pitch controller in the wind turbine control system. Each wind turbine blade 4 has a tip 6 , a root 7 and a body with an aerodynamic profile defining a trailing edge 8 and a leading edge 9 .

[0090] The wind turbine control system further comprises a controller 10 controlling the operation of the wind turbine 1 , and a plurality of sensor units 11 connected to the controller 10 . The sensor unit 11 comprises a rotational speed sensor arra...

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Abstract

The present invention relates to a wind turbine (1) and a method of operating a wind turbine with at least one rotational speed exclusion zone (18, 19), wherein the wind turbine (!) comprises a wind turbine control system (10) monitoring the vibrations of the wind turbine tower (2) and the rotational speed of the rotor. The wind turbine control system (10) controls the rotational speed of the rotor based on the measured vibration level (13), wherein the control system (10) uses the at least one exclusion zone (18, 19) to avoid rotational speeds that coincide with the eigenfrequency (14) of thewind turbine tower (2). The at least one exclusion zone (18, 19) has a variable width, which is determined based on the measured vibration level ( 13) so that resonance in the wind turbine tower (2)is avoided while minimizing the power loss.

Description

technical field [0001] The invention relates to a wind turbine and a method of operating a wind turbine with a speed exclusion zone, wherein the wind turbine comprises a control system arranged to control the speed of a rotor or a generator. The control system monitors the speed and changes the speed to avoid critical speeds falling into forbidden zones. Background technique [0002] It is known to control the operation of variable speed wind turbines in order to reduce the load on the wind turbines while maximizing power production. Of particular concern is the sway that occurs in the wind turbine tower due to resonance, which in turn leads to increased bending moments and increased fatigue loads. These increased loads reduce the operating time of the wind turbine tower. Vibrations in the drive train may also cause the wind turbine tower to resonate if the frequency of the torque coincides with the eigenfrequency of the wind turbine tower. The rotational frequency of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/04F03D7/02F03D9/00G01M7/00
CPCF03D7/0276F03D7/04F03D9/00F03D7/02G01M7/00F03D7/0296F05B2270/327F05B2270/334Y02E10/728F05B2220/706F05B2240/912F05B2270/101F05B2270/1095F05B2270/335Y02E10/72Y02E10/727F03D9/25F03D7/0224F03D7/0244F03D7/0292F03D7/042G05B13/024
Inventor 科德·斯蒂芬·佩德森迈克尔·弗里德里希
Owner YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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