Method and system for suppressing tower vibration

A vibration system and tower technology, applied in the direction of engines, wind turbines, machines/engines, etc., can solve problems such as increasing additional stress, performance degradation, and reducing the structural strength of the wind turbine system

Active Publication Date: 2015-04-22
CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resonance of the tower at the natural frequency will increase the additional stress, reduce the structural strength of the wind turbine system, and lead to performance degradation
[0003] The existing vibration reduction methods are difficult to effectively suppress the resonance of the tower in the natural frequency range without affecting the power generation efficiency and power generation capacity of the unit in the resonance area

Method used

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  • Method and system for suppressing tower vibration
  • Method and system for suppressing tower vibration
  • Method and system for suppressing tower vibration

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The invention provides a method for suppressing tower vibration, which is applied to wind turbines, such as figure 1 Shown is the flow chart of an embodiment of the method for suppressing tower vibration of the present invention, the method comprising:

[0052] Step S101: measuring the front and rear acceleration of the cabin;

[0053] Step S102: Eliminate the measured data zero drift of the acceleration and the interference signal containing the long-...

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Abstract

The invention discloses a method and a system for suppressing tower vibration. Errors of sagittal acceleration are eliminated, compensation variable pitch angle coefficients are calculated to obtain compensation variable pitch angles needing adjustment for variable pitch control, and sagittal tower vibration can be accurately and stably suppressed by adjusting the compensation variable pitch angles without changing the running state of a unit.

Description

technical field [0001] The invention relates to the field of wind power control, in particular to a method and system for suppressing tower vibration. Background technique [0002] The tower is the component of the wind turbine that supports the nacelle and the wind rotor. As the capacity of the single wind turbine gradually increases, the size of the tower becomes larger and the weight increases, resulting in a decrease in the natural frequency. At the same time, the diameter of the wind rotor of the unit is getting larger and larger, and the operating speed and range of the unit are getting smaller and smaller. Under the interlaced development of these factors, the probability of cross-resonance between the natural frequency of the tower and the excitation frequency of the unit operation is increasing. Resonance of the tower at the natural frequency will increase the additional stress, reduce the structural strength of the wind turbine system, and lead to performance degra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 杨微陶友传陶芬刘杰韩花丽
Owner CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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