中国电机工程学报2024，Vol.44Issue(11)：4417-4425,中插20,10.DOI:10.13334/j.0258-8013.pcsee.223162
极端风况下兆瓦级风力机动力学特性研究
Dynamics Characteristic of Megawatt Wind Turbine Under Extreme Wind Conditions
摘要
Abstract
Due to extreme wind conditions such as strong turbulence and sudden wind direction change,which frequently lead to serious accidents,a calculation method of dynamic response for large-scale megawatt wind turbine suitable for various complex wind conditions is proposed in this paper.The blade element momentum theory(BEM),hybrid beam theory,finite element method,modified Newmark-β method and Lanczos decoupling technology are combined together,and the dynamics characteristic such as unsteady inflow effect of flexible rotor,shear deformation and centrifugal stiffness effect,aerodynamic-structural damping effect,structural coupling between flexible components as well as nonlinear large deformation are taken into consideration.The dynamics characteristic of megawatt wind turbine under ETM(Extreme turbulence model)and ECD(Extreme coherent gust with direction change)conditions are further analyzed.Some interesting phenomena are found as follows.The wind direction angle will cause the overshoot in loading effect,resulting in a large sudden change of displacement for blades and towers before they tend to be stable.The flapwise blade deformation is greatly affected by the extreme turbulence.The longitudinal turbulence component will lead to severe vibration of a tower in the fore-aft and side-to side directions.The research method is of great significance for the determination of wind turbine aeroelastic stability under extreme wind conditions and the realization of rigid flexible coupling dynamics simulation technology.关键词
兆瓦级风力机/极端风况/动态响应/动力学特性Key words
megawatt wind turbine/extreme wind conditions/dynamic response/dynamics characteristic分类
能源科技引用本文复制引用
李治国,高志鹰,张立茹,汪建文..极端风况下兆瓦级风力机动力学特性研究[J].中国电机工程学报,2024,44(11):4417-4425,中插20,10.基金项目
国家自然科学基金项目(51866012) （51866012）
内蒙自然科学基金(2023LHMS05031) （2023LHMS05031）
内蒙古自治区直属高校基本科研业务费项目(JY20240021,JY20220240). Project Supported by National Natural Science Foundation of China(51866012) （JY20240021,JY20220240）
Inner Mongolia Natural Science Foundation(2023LHMS05031) （2023LHMS05031）
Mongolia Basic Scientific Research Project of Directly Affiliated Universities(JY20240021,JY20220240). （JY20240021,JY20220240）
