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论文类型：期刊论文

发表时间：2009-11-01

发表刊物：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A

收录刊物：ISTIC、SCIE、EI、Scopus

卷号：10

期号：11

页面范围：1573-1580

ISSN号：1673-565X

关键字：Fluctuating wind velocity; Mean wind velocity; Tower; Blade; Coupling; Wind shear effect; Vibration

摘要：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.