Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (4): 44-49.doi: 10.3969/j.issn.1000-565X.2011.04.008

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Dynamic Analysis and Bionic Design of Multi-Body System of Large-Scale Horizontal-Axis Wind Turbine

Liu Wang-yu  Zhang Yong  Chen Long   

  1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2010-07-05 Revised:2010-12-08 Online:2011-04-25 Published:2011-03-01
  • Contact: 刘旺玉(1966-)，女，博士，教授，主要从事现代加工方法与结构优化设计研究 E-mail:zyzl1984@yahoo.com.cn
  • About author:刘旺玉(1966-)，女，博士，教授，主要从事现代加工方法与结构优化设计研究
  • Supported by:

    国家自然科学基金资助项目(50975090)

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Abstract:

In this paper,a dynamic model of the multi-body system of a 1.5MW direct-drive wind turbine is established with the finite element software ANSYS.Then,the natural frequency of the wind turbine is calculated,and the resonance and the stability of the system are analyzed.Moreover,the transient response of each component of the system under extreme operation gusts is discussed.The results indicate that,the tower is flexible;the system is stable and safe at normal working rotational velocity;and that,due to the difference in stiffness of the components,the variation of the tip of the wind turbine blade,which is induced by the coupling of the elastic deformations of three blades and the tower under wind loading,is more complex than that of other components.The flexible structure of the plant trunk is applied to the design of the wind turbine tower,and the feasibility of this bionic design is finally proved.

Key words: wind turbine, multi-body system, modal analysis, stability, dynamic response, bionic design