The tower of onshore wind turbine is the supporting part of the whole machine, and its service is related to the safety state of the whole machine. In order to ensure the safety of the whole machine operation, the vibration analysis of the tower is needed. This paper takes the onshore wind turbine tower as the research object, establishes the 3D model of the onshore wind turbine tower, and uses Ansys Workbench software to carry out the finite element modal analysis of the tower. According to the results of finite element modal analysis, the measured scheme is designed to test the tower, and the measured data onto tower vibration is analyzed by power spectrum. The analysis results can provide some reference to vibration monitoring of wind turbine tower.

Zhang Hongtai. Vibration analysis of tower of onshore wind turbine. Academic Journal of Engineering and Technology Science (2023) Vol. 6, Issue 4: 21-27. https://doi.org/10.25236/AJETS.2023.060404.

[1] Cao Yaoxin, Zhao Di, Li Yanrong, Zan Zhilong. (2021). Analysis of vortex induced vibration for MW direct drive wind turbine tower. Heavy Machinery,(06),52-55.

[2] Ouyang Ruxian, Hu Liangming, Xiang Kai, Huang Hao.(2021).Analysis of the influence of bolt fracture on structure of wind turbine tower. Renewable Energy Resources,(11),1489-1494.

[3] Asareh M A, Schonberg W, Volz J. (2016).Fragility analysis of a 5-MW NREL wind turbine considering aero-elastic and seismic interaction using finite element method. Finite Elements in Analysis and Design,(120), 57-67.

[4] Quilligan A, O’Connor A, Pakrashi V. (2012).Fragility analysis of steel and concrete wind turbine towers. Engineering structures, (36), 270-282.

[5] Tan Jiqiu, Qin Shangle. (2014). The research of MW level Wind Turbine Tower Modal Analysis. Journal of Xiangtan University (Natural Science Edition), 36(03), 35-40.

[6] Tao Xuejun, Lu Xiaoguang. (2014). Study of wind turbine tower vibration reduction based on control method. Journal of Mechanical & Electrical Engineering, 31(03), 325-329.  

[7] Nie Guolin, Mi Liang, Cheng Hang, et al. (2016). Analysis on the Impact Factors of Wind Turbine Tower Modal Based on APDL and Orthogonal Experimental Design. Journal of Taiyuan University of Technology, 47(02), 254-258.

[8] Cao Bifeng, Yi Chuanbao. (2014). Dynamic Response Analysis of Wind Turbine Towers under Wind and Earthquake Combined Loadings. Noise and Vibration Control, 34(04), 205-208.

[9] Yao Xingjia, Liu Yingming, Liu Guangde et al. (2007). Vibration analysis and online condition monitoring technology for large wind turbine. Journal of Shenyang University of Technology, (06),627-632.