大型风力机塔架结构优化设计  

OPTIMIZATION DESIGN OF TOWER STRUCTURE OF LARGE WIND TURBINE

作　　者：时虹[1] 夏志平 冯美龙[1] 刘晓红[1] SHI Hong;XIA ZhiPing;FENG MeiLong;LIU XiaoHong(School of Mechanical Engineering,Jiujiang Vocational and Technical College,Jiujiang 332007,China)

机构地区：[1]九江职业技术学院机械工程学院,九江332007

出　　处：《机械强度》2021年第4期992-996,共5页Journal of Mechanical Strength

基　　金：江西省教育厅科技项目(GJJ181211)资助。

摘　　要：塔架作为风力发电机组的主要承载部件,其性能直接影响风力机的使用寿命与安全,因此对塔架结构进行优化设计尤为重要。以2 MW风力发电机组塔架为研究对象,以塔架质量为优化目标,固频、应力、高度等为约束条件,直径、壁厚和节长为控制变量,通过仿真对塔架进行结构优化,并通过解析求解对仿真进行校核。结果表明,优化设计的塔架不仅减轻了塔架重量4.21%,同时提高了固有频率,避开了共振区间;仿真法与解析法结果对比,应力最大位置一致,解析应力比仿真小22.3%,解析模态一阶模态比仿真大18%,仿真具有一定的可信度;该优化方法具有一定的实用性和工程应用价值,适合推广应用。The tower is the main bearing component of wind turbine,and its performance directly affects the service life and safety of wind turbine.The 2 MW wind turbine tower structure optimization was researched,with the tower quality was taken as the optimization objective,the natural frequency,stress and height was taken as the constraint conditions,and the diameter,wall thickness,pitch length was taken as control variables.The tower structure was optimized by simulation and checked by analytical solution.The results show that the optimized tower has reduced weight 4.21%and increased natural frequency,the maximum stress position obtained by simulation is the same but 22.3%larger than the analytical,the analytical first order natural frequency is 18%larger than the simulation.This optimization method has certain practicability and engineering application value,and is suitable for popularization and application.

关 键 词：风力发电机 塔架 结构优化 仿真分析 解析求解 

分 类 号：TH122[机械工程—机械设计及理论]