Influences of Base Motions on Additional Excitations of Floating Wind Turbine Gearbox Transmission System

被引：1
作者：
Tan J. [1 ,2 ,3 ]
Zhu C. [1 ]
Li H. [1 ]
Song C. [1 ]
Dong Y. [2 ]
机构：
[1] State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing
[2] CSIC(Chongqing) Haizhuang Windpower Equipment Co., Ltd, Chongqing
[3] School of Electrical Engineering, Chongqing University, Chongqing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2023年 / 59卷 / 01期
关键词：
base motions; dynamic responses; floating wind turbine; transmission system; wind turbine gearbox;
D O I：
10.3901/JME.2023.01.035
中图分类号：
学科分类号：
摘要：
The gearbox transmission system is the key component to transfer loads and rotations in the floating wind turbine, and is frequently affected by base motions, leading to complex vibration characteristics. A coupling modeling method between 6-DOFs base motions and 6-DOFs vibration displacements of the revolution/rotation component under the non-inertial coordinates system is proposed. A dynamic model of the wind turbine gearbox transmission system is established by using the lumped parameter method and Lagrange’s equation, and then the influences of base motions on the component’s additional excitations and system dynamic responses are investigated. The results show that base motions cause time-varying additional parametric excitations to each component of the gearbox transmission system, and the characteristic frequency of these additional excitations is the combination of system characteristic frequency, base motion frequency, and its harmonic frequency. The amplitude of these additional excitations on the component is non-linear with amplitude and frequency of surge and pitch motions. As the amplitudes and frequencies of surge and pitch become large and frequent, the coupling effects between surge and pitch motions are more obvious. Base motions enlarge radial and axial vibration responses of components, and these responses appear characteristic frequencies related to base motion frequency. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
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页码：35 / 49
页数：14
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