考虑叶片旋转和离心力效应风力机塔架风振分析  

WIND-INDUCED RESPONSE ANALYSIS OF WIND TURBINE TOWER CONSIDERING ROTATIONAL AND CENTRIFUGAL FORCE EFFECT

作　　者：柯世堂[1,2] 王同光[2] 曹九发[2] 赵林[3] 葛耀君[3] 

机构地区：[1]南京航空航天大学土木工程系,南京210016 [2]南京航空航天大学江苏省风力机设计高技术研究重点实验室,南京210016 [3]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《太阳能学报》2015年第1期33-40,共8页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2014CB046200);国家自然科学基金(51208254);南京航空航天大学科研基金(XCA12003)

摘　　要：为分析叶片旋转和离心力效应对风力机塔架风振反应的影响,建立考虑叶片离心力效应的风力机塔-轮整体有限元模型分析系统动力特性,采用谐波叠加法和改进的叶素动量理论模拟考虑旋转效应的叶片和塔架脉动风速时程,结合笔者提出的风振精细化频域计算方法分析塔架与叶片在脉动风作用下的动力反应。研究表明:旋转效应会增大叶片的气动载荷和塔架的动力响应及风振系数,离心力效应增大了风力机系统频率并减小了塔架的风振反应及风振系数。In order to analyze the wind-induced responses of wind turbine system with the aero-elastic effect and centrifugal force effect, the dynamic characteristics of wind turbine tower-rotor system have been finished. The fluctuating wind velocity time series was simulated by the modified harmony superposition method and blade element momentum theory, which considering the blade-tower interaction. Using the domain calculating method ＂consistent coupled method＂ , the wind-induced responses for wind turbine system were calculated. The results showed that the aeroelastic effect would amplify the aerodynamic loads and responses, the centrifugal force effect would amplify the system frequencies and reduce the wind-induced responses of wind turbine tower.

关 键 词：旋转效应 离心力效应 风力机塔架 风场模拟 风振反应 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TU279.74[建筑科学—建筑设计及理论]