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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (11): 1573-1580    DOI: 10.1631/jzus.A0820750
Mechanics and Mechanical Engineering     
Wind-induced response analysis of a wind turbine tower including the blade-tower coupling effect
Xiao-bo CHEN, Jing LI, Jian-yun CHEN
School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
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Abstract  To analyze wind-induced response characteristics of a wind turbine tower more accurately, the blade-tower coupling effect was investigated. The mean wind velocity of the rotating blades and tower was simulated according to wind shear effects, and the fluctuating wind velocity time series of the wind turbine were simulated by a harmony superposition method. A dynamic finite element method (FEM) was used to calculate the wind-induced response of the blades and tower. Wind-induced responses of the tower were calculated in two cases (one included the blade-tower coupling effect, and the other only added the mass of blades and the hub at the top of the tower), and then the maximal displacements at the top of the tower of the tow cases were compared with each other. As a result of the influence of the blade-tower coupling effect and the total base shear of the blades, the maximal displacement of the first case increased nearly by 300% compared to the second case. To obtain more precise analysis, the blade-tower coupling effect and the total base shear of the blades should be considered simultaneously in the design of wind turbine towers.

Key words： Fluctuating wind velocity      Mean wind velocity      Tower      Blade      Coupling      Wind shear effect      Vibration     
Received: 28 October 2008     
CLC:  TU311.3  
  TK8  
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Xiao-bo CHEN
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Xiao-bo CHEN, Jing LI, Jian-yun CHEN. Wind-induced response analysis of a wind turbine tower including the blade-tower coupling effect. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(11): 1573-1580.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820750     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I11/1573

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