Effects of environmental parameters on fatigue damage of wind turbine gearbox transmission system
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1.State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044,P. R. China;2.CSIC Haizhuang Wind Power Company Limited, Chongqing 401122, P. R. China

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Supported by Chongqing Natural Science Foundation (cstc2020jcyj-msxmX0710), and the Fundamental Research Funds for the Central Universities (2020CDJ-LHSS-008, and 2021CDJCGJ008).

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    Abstract:

    In the entire life cycle of a wind turbine, the probability distribution of long-term wind speeds introduces randomness to the dynamic load on the wind turbine gearbox transmission system appear random, thereby affecting the accuracy of fatigue damage prediction. In this paper, a fatigue damage prediction method is proposed for the wind turbine gearbox transmission system with considering the characteristics of the long-term wind speed probability distribution. The approach involves assessing the short-term fatigue damage of gears in the transmission system of wind turbine gearbox based on an OpenFAST-SIMPACK combined simulation model built for high power offshore wind turbines. Subsequently, surrogate model technology is used to reconstruct the mapping relationship between “average wind speed, turbulence intensity, and short-term fatigue damage” enabling the prediction of long-term fatigue damage for the gears. The research results show that the low-speed sun gear in the wind turbine gearbox transmission system is prone to contact fatigue failure. Below the rated wind speed, the short-term fatigue damage of the low-speed sun gear correlates positively with the average wind speed, thereby increasing the uncertainty of long-term fatigue damage and elevating the risk of fatigue failure.

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伍源,朱才朝,谭建军,宋朝省,张会阳.环境参数对风电齿轮箱传动系统疲劳损伤的影响[J].重庆大学学报,2024,47(3):132~144

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History
  • Received:January 23,2022
  • Online: April 02,2024
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