IMECH-IR  > 流固耦合系统力学重点实验室
Analysis on dynamic interaction between flexible bodies of large-sized wind turbine and its response to random wind loads
Guo, Shuangxi1,3,4; Li, Yilun2; Chen, Weimin1,4
Corresponding AuthorChen, Weimin(wmchen@imech.ac.cn)
Source PublicationRENEWABLE ENERGY
2021
Volume163Pages:123-137
ISSN0960-1481
AbstractAnalysis of structural dynamic response of wind turbine is one of important issues to assess its structural integrity and safety during operation process. As the output power of wind turbine increasingly gets larger, the structural flexibility of the elastic components, such as rotor blades and supporting tower, of wind turbine gets larger owing to larger structural size, and, consequently, the dynamic interaction between these flexible bodies become more profound or, even, may have a significant impact on the dynamic response of the wind turbine. In this study, the integrated finite element model of a 5-MW wind turbine is developed so as to carry out dynamic response analysis, in terms of both time history and frequency spectrum, of the large wind turbine including multiple elastic bodies and their dynamic in-teractions. In order to have a deeper insight into the impact and mechanism of the dynamic interaction, the load transmission along its transmitting route and mechanical energy distribution during dynamic response under random wind loads are studied. And, the influences of the stiffness and motion of the supporting tower on the integrated system response are discussed. Our numerical results show that the dynamic interaction between the elastic bodies may be significant during dynamic response. The response of the tower top becomes around 15% larger than that of the simplified model mainly due to the elastic deformation and dynamic vibration (called inertial-elastic effect) of the flexible blade; On the other hand, the elastic deformation may additionally consume around 10% energy (called energy-consuming effect) coming from external wind load, and, consequently, it could decrease the displacement of the tower. Therefore, there is a competition between the energy consuming effect and inertial-elastic effect of the flexible blade on the overall dynamic response of the wind turbine. As for the blade response, the displacement of the blades gets up to 20% larger than that without blade-tower interaction, because the elastic-dynamic behaviors of the tower principally provides a more flexible and vibrating supporting base, which can significantly change the natural mode shape of the integrated wind turbine and can decrease the natural frequency of the blade. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordWind turbine Dynamic response Finite element simulation Coupling system Random wind loads
DOI10.1016/j.renene.2020.08.126
Indexed BySCI
Language英语
WOS IDWOS:000591526300010
WOS KeywordTOWER
WOS Research AreaScience & Technology - Other Topics ; Energy & Fuels
WOS SubjectGreen & Sustainable Science & Technology ; Energy & Fuels
Funding ProjectStrategic Priority Research Programme of CAS[XDA22000000] ; National Natural Sciences Foundation[11372320]
Funding OrganizationStrategic Priority Research Programme of CAS ; National Natural Sciences Foundation
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/85569
Collection流固耦合系统力学重点实验室
Corresponding AuthorChen, Weimin
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
2.Univ Paris Saclay, Cent Supelec, Lab MSSMat, F-91190 Gif Sur Yvette, France
3.AVIC Composite Technol Ctr, AVIC Mfg Technol Inst, Beijing 101300, Peoples R China
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Guo, Shuangxi,Li, Yilun,Chen, Weimin. Analysis on dynamic interaction between flexible bodies of large-sized wind turbine and its response to random wind loads[J]. RENEWABLE ENERGY,2021,163:123-137.
APA Guo, Shuangxi,Li, Yilun,&Chen, Weimin.(2021).Analysis on dynamic interaction between flexible bodies of large-sized wind turbine and its response to random wind loads.RENEWABLE ENERGY,163,123-137.
MLA Guo, Shuangxi,et al."Analysis on dynamic interaction between flexible bodies of large-sized wind turbine and its response to random wind loads".RENEWABLE ENERGY 163(2021):123-137.
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