|Table of Contents|

Fatigue damage analysis of monopile offshore wind turbine equipped with pounding tuned mass damper(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2025年03期
Page:
48-57
Research Field:
建筑结构
Publishing date:

Info

Title:
Fatigue damage analysis of monopile offshore wind turbine equipped with pounding tuned mass damper
Author(s):
KONG Fan1; 2;  MULATIJIANG Maimaiti1;  SUN Xianghong3;  XIA Hongbing4;  WANG Heng5
Keywords:
monopile offshore wind turbine;  PTMD;  combined wind and wave action;  fatigue damage
PACS:
TU352
DOI:
10.19815/j.jace.2023.04047
Abstract:
In order to investigate the control effect of pounding tuned mass damper(PTMD)on the fatigue damage of offshore monopile wind turbines under the combined action of wind and wave, the 5 MW benchmark monopile offshore wind turbine provided by the national renewable energy laboratory(NREL)in the United States was taken as the research object, and the Lagrange equation was used to establish the motion equation of the monopile wind turbine-PTMD system under the combined action of wind and wave. Considering the Kaimal turbulence spectrum model and the Jonswap wave height spectrum, the stochastic wind speed time history and the wave load time history were obtained respectively. Based on Palmgren-Miner linear fatigue cumulative damage theory and rain flow counting method, the fatigue damage of monopile wind turbines-PTMD system was analyzed. The results show that the PTMD, with optimal collision parameters and tuning frequency, can significantly reduce the fatigue damage induced by wind and wave loads, and the PTMD mass block can meet the practical use requirements of the wind turbines without excessive stroke. Even in the case of detuning, PTMD still has a good effect on reducing the fatigue damage of the wind turbine. The proposed PTMD technology has a good application prospect and can be widely used in offshore wind farms to improve the safety and fatigue characteristics of offshore monopile wind turbine tower.

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Last Update: 2025-06-01