考虑桨叶伺服控制的浮式风机多刚体动力学建模与验证  

Modeling and verification of multi-rigid body dynamics of floating offshore wind turbines considering servo control

作　　者：刘增辉 陈建兵[1,2] 宋玉鹏 张自立[1,2] LIU Zeng-hui;CHEN Jian-bing;SONG Yu-peng;ZHANG Zi-li(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]同济大学土木工程防灾减灾全国重点实验室,上海200092 [2]同济大学土木工程学院,上海200092 [3]南京工业大学土木工程学院,江苏南京211816

出　　处：《振动工程学报》2023年第4期892-902,共11页Journal of Vibration Engineering

基　　金：国家杰出青年科学基金资助项目(51725804);国家自然科学基金资助项目(11672209);上海市国际科技合作基金资助项目(22160713000)。

摘　　要：浮式风机是深远海域风力发电的关键结构,分析其在复杂海况下的动力学响应特征对保障远海风能开发具有重要意义。在初步设计和方案比选阶段,需要开发能够定量把握浮式风机动力学主要特征、且分析高效的一体化分析模型。为此,针对大型Spar式海上浮式风机,建立了多刚体动力学全耦合分析模型。基于Lagrange方程,推导了考虑桨叶转动与桨距控制的8自由度刚体运动方程。结合所建议的多刚体模型,基于Spar式浮式风机1∶50缩尺模型试验实测数据,建立了与试验物理模型相应的一体化多刚体数值模型,并进行了静力、纯风、纯浪以及风-浪联合条件下数值分析结果与试验观测结果的对比分析。采用本文建模理论,建立了OC3-Spar式浮式风机足尺结构数值分析模型,并与常用的风机结构分析软件FAST的计算结果进行了对比分析。通过与上述缩尺物理模型试验和足尺数值模型软件分析对比,验证了浮式风机多刚体动力学分析模型的有效性。Floating offshore wind turbine(FOWT)is the key structure for wind energy harvesting in deep sea area,and the dynam⁃ic response analysis of FOWTs under complex environmental conditions plays a significant role in guaranteeing the structural safety of the system.In the stage of preliminary design and scheme comparison,an efficient integrated dynamic analysis model is neces⁃sary to quantitatively capture the main dynamic characteristics of FOWTs.In this paper,a multi-rigid body fully coupled dynamic analysis model is established for the spar-type FOWT.Based on the Lagrangian equation,an 8-degree-of-freedom equation of mo⁃tion of the spar-type FOWT considering the generator torque control and blade pitch control mechanisms are derived.According to the parameters of a 1∶50 scaled physical model of a spar-type FOWT,the scaled numerical analysis model is established by using the multi-rigid body dynamics model.On this basis,comparisons between the numerical and experimental results under static condi⁃tions,wind only conditions,wave only conditions and combined wind and wave conditions are implemented.In addition,the nu⁃merical analysis model of the spar-type FOWT prototype in the OC3 project is also established by using the proposed multi-rigid body dynamical theory,and the comparison of the analysis results with FAST is carried out as well.By comparing with the experi⁃mental results and the numerical simulation results of FAST,the effectiveness of the proposed multi-rigid body dynamics model of FOWTs is thus verified.The fully coupled model proposed in this paper not only provides a basic for the preliminary design and scheme selection of spar-type FOWTs,but also provides a reference to the development of simplified integrated models for other types of FOWTs.

关 键 词：浮式风机 多刚体动力学模型 全耦合模型 模型试验 试验验证 数值验证 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] O313.3[理学—一般力学与力学基础] P75[理学—力学]