机电工程技术2024，Vol.53Issue(11)：245-249,5.DOI:10.3969/j.issn.1009-9492.2024.00140
基于有限元仿真的海上风机支撑结构动力学分析
Dynamic Analysis of Offshore Wind Turbine Support Structure Based on Finite Element Simulation
摘要
Abstract
The offshore wind power dynamics simulation analysis is one of the key technologies of wind turbine support structures.The wind turbine support structures frequency is highly sensitive to environmental conditions and wind turbine parameters.Accurate modal analysis of offshore wind power dynamics is the key to ensuring that the allowable frequency range of wind turbines is exceeded,resonance does not occur after offshore wind turbines operation.Based on ANSYS finite element simulation software,a nonlinear coupling model of wind turbine support structure-soil is established,and the influence of parameters such as the rotor nacelle assembly mass moments of inertia,tower height,and water depth on the natural frequency of the structure is studied.The results show that the rotor nacelle assembly mass moments of inertia has an impact of about 3.4%on the first-order natural frequency of the wind turbine support structure,under different water depth conditions,when the tower height increases by2.84 m,the first-order natural frequency of the wind turbine support structure decreases by3.48%to 3.88%,reducing the water depth by 6 m increases the first-order natural frequency of the wind turbine support structure by 0.19%to 0.56%.Typical sandy soil and weathered rock geology are focused on,and the dynamic sensitivity of parameters such as the rotor nacelle assembly mass moments of inertia,hub height,and water depth are studied,which has certain reference significance for the dynamic optimization design of offshore wind turbine support structures under similar geological site conditions.关键词
海上风电导管架基础/模态分析/塔筒高度/水深Key words
offshore wind jacket foundation/modal analysis/tower height/water depth分类
能源科技引用本文复制引用
邹荔兵,田振亚,吴坤林,李俊威,崔璨,刘芬..基于有限元仿真的海上风机支撑结构动力学分析[J].机电工程技术,2024,53(11):245-249,5.基金项目
广东省重点领域研发计划项目(2021B0101230002) （2021B0101230002）
