Modal Analysis of a Wind Turbine Tower Based on the Finite Element Method

Abstract:

For the low power wind turbine, the tower and the generator unit is easy to produce resonance, which will result in bigger amplitude. In this paper, as an example, the authors establish a finite element model for modal analysis by a 55kw direct-drive permanent-magnet generator, to confirm its inherent frequency and vibration mode. Horizontal amplitude on the top of the tower can be received under different external excitation frequency. The results correspond to the codes very well and can provide effective reference data for the design of the wind turbine tower.

• Periodical: Applied Mechanics and Materials (Volumes 744-746)
• Pages: 179-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.744-746.179
• Online since: March 2015
• Authors: Hong Zhu Shan, Zhen Hua Liu*
• Keywords: Excitation Frequency, Inherent Frequency, Modal Analysis, Resonance

References

[1] Zhao Rongzhen: The horizontal axis wind turbine tower vibration modal analysis．Journal of lanzhou university of technology(In Chinese).

[2] Deng ying: Wind turbine design and technology. Chemical industry Publishers (2011).

[3] Yue Ge: Application base and Example explanation of ADINA. People's traffic Publishers (2008)(In Chinese).