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Installation method of pre-stress tuned mass damper based on parameter design calculation

A technology of tuning mass damping and parameter design, applied to the installation/supporting configuration of wind turbines, towers, building types, etc., can solve the problems of limited space, inconvenient practical application, limited control force, etc., and achieve the effect of easy selection

Active Publication Date: 2021-07-02
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tuned mass dampers are divided into supported TMDs and suspended TMDs. Supported TMDs generally need to be arranged on the top of the wind turbine, but the cabin space on the top of the wind turbine is limited, which is not conducive to layout.
Therefore, the arrangement of suspended TMD inside the wind turbine tower came into being. However, the frequency of the suspended TMD can only be adjusted through the pendulum length. Due to the extremely limited space inside the tower, the swing angle of the suspended TMD is very small, and small The control force provided at the swing angle is very limited, resulting in unsatisfactory shock absorption
[0006] Therefore, in order to solve the above problems, the inventor team designed a brand new prestressed tuned mass damper (PS-TMD). finite element model, the workload is large, and it is not convenient for practical application

Method used

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  • Installation method of pre-stress tuned mass damper based on parameter design calculation
  • Installation method of pre-stress tuned mass damper based on parameter design calculation
  • Installation method of pre-stress tuned mass damper based on parameter design calculation

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Embodiment Construction

[0084] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0085] like figure 1 and figure 2 As shown, a prestressed tuned mass damper installation method based on parameter design calculation, the wind turbine tower structure includes a tower 1 and a nacelle 2 installed on the top of the tower, the blade 6 is rotatably installed on the nacelle 2, the tower The frame 1 is composed of several tower tubes 1a which are sequentially connected by flanges 1b. The prestressed tuned mass damper includes a mass block 3 that is hung between the top of the tower (i.e. the nacelle 2) and the flange 1b closest to the top of the tower through a prestressed cable 5, and several Dampers 4, both ends of each damper 4 are elastically supported between the outer wall of the mass block 3 and the inner wall of the corresponding tower 1a.

[0086] The mass block 3 is connected to the wall of the tower 1a through several dampers 4 that...

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Abstract

The invention discloses an installation method of a pre-stress tuned mass damper based on parameter design calculation. The installation method comprises the following steps that S1, parameters of a wind turbine tower structure are calculated; and S2, according to the obtained parameters of the wind turbine tower structure, parameters of the pre-stress tuned mass damper are calculated; and S3, the corresponding pre-stress tuned mass damper is selected and installed on a wind turbine tower. By adopting the installation method of the pre-stress tuned mass damper based on parameter design calculation, all the parameters of the pre-stress tuned mass damper can be adaptively determined by combining the parameters of the wind turbine tower structure, a theoretical basis is provided for engineering design, and model selection, installation, use and popularization of the pre-stress tuned mass damper are facilitated.

Description

technical field [0001] The invention relates to the technical field of wind power generation equipment, in particular to a method for installing a prestress tuned mass damper based on parameter design and calculation. Background technique [0002] In order to improve power generation efficiency and adapt to the operation requirements of wind turbines in low wind speed areas, wind turbines are developing towards large megawatts, and their tower structures are gradually becoming taller and softer, resulting in a decrease in the natural vibration frequency of wind turbines, which has gradually approached the frequency of external loads such as wind and waves. , which is easy to cause the resonance of the wind turbine tower. Excessive vibration not only reduces the fatigue life of the tower itself, but also has a greater impact on the performance of the generator set, which will reduce the overall life of the fan and reduce the power generation efficiency. Therefore, the develo...

Claims

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Application Information

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IPC IPC(8): E04H9/02E04B1/98E04H12/00F03D13/20
CPCE04H9/02E04B1/98E04H12/00F03D13/20Y02E10/728Y02E10/72
Inventor 刘纲雷振博杨庆山陈奇杜昊天王晖刘淇贺成华郭宇飞
Owner CHONGQING UNIV
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