腿距变化下海上风电机组导管架拓扑优化设计方法  

TOPOLOGY OPTIMIZATION METHOD ON JACKET STRUCTURE OF OFFSHORE WIND TURBINE BY VARYING LEG DISTANCES

作　　者：张锦华 杜家政[1] 龙凯 姚西山 陆飞宇 耿荣荣 Zhang Jinhua;Du Jiazheng;Long Kai;Yao Xishan;Lu Feiyu;Geng Rongrong(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;Yalong River Hydropower Development Company,Ltd.,Chengdu 610051,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124 [2]新能源电力系统国家重点实验室(华北电力大学),北京102206 [3]雅砻江流域水电开发有限公司,成都610051

出　　处：《太阳能学报》2024年第11期427-432,共6页Acta Energiae Solaris Sinica

基　　金：国家重点研发计划(2022YFB4201302);南方电网新能源联合实验室开放课题(GDXNY2024KF03);广东省基础与应用基础研究基金海上风电联合基金(2022A1515240057);华能集团海上风电与智慧能源系统科技专项(HNKJ20-H88-01)。

摘　　要：为进一步提高海上风电机组支撑结构力学性能,通过调整桩腿距离以改变设计域,提出腿距变化下的导管架拓扑优化设计方法。建立多目标归一化加权柔顺度最小优化目标模型,设置体积比和工程制造加工约束,分析拓扑优化构型变化规律。基于IEC 61400-3规范及有限元分析进行整机极限载荷计算与导管架极限工况分析。以一阶固有频率、最大位移、最大支反力为衡量指标,与NREL 5 MW机组相比,腿距变化下对应设计域的一系列拓扑优化结构在力学各方面性能上更加优越,证明所提出的拓扑优化方法在导管架设计中的可行性和优越性。To further improve the mechanical properties of the support structure of the offshore wind turbine,a topology optimization design method is proposed by adjusting the leg distance to change the design domain.A multi-objective normalized weighted compliance minimum optimization model is established while the volume fraction and engineering manufacturing constraints are imposed as constraints.The variations of optimized topologies are analyzed.Based on IEC 61400-3 specification and finite element analysis,the ultimate load calculation and the ultimate working condition analysis of jacket are performed.Compared with NREL 5 MW offshore wind turbine,the mechanical performance of a series of optimized topologies with various leg spacing corresponding to the adjustable design domain are superior in terms of fundamental natural frequency,maximum displacement and maximum pull-out force.By altering the design domain of leg distance,the optimization results illustrate that the proposed topology optimization approach is feasible and advantageous in jacket design.

关 键 词：海上风电机组 结构设计 多目标优化 支撑 体积比 固有频率 

分 类 号：TH12[机械工程—机械设计及理论]