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

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...

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

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