RESEARCH ON OPTIMIZATION AND LOW-FREQUENCY VIBRATION SUPPRESSION OF TMD FOR FLOATING OFFSHORE WIND TURBINES WITH MULTI-DEGREE-OF-FREEDOM COUPLING

Yang Yi; Liu Shi; Tao Tao; Yin Jianfei; Zhu Zhicheng; Li Deshun

doi:10.19912/j.0254-0096.tynxb.2025-0220

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 9-17. DOI: 10.19912/j.0254-0096.tynxb.2025-0220

RESEARCH ON OPTIMIZATION AND LOW-FREQUENCY VIBRATION SUPPRESSION OF TMD FOR FLOATING OFFSHORE WIND TURBINES WITH MULTI-DEGREE-OF-FREEDOM COUPLING

Yang Yi^1,2, Liu Shi^1,2, Tao Tao¹, Yin Jianfei³, Zhu Zhicheng⁴, Li Deshun⁴

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Abstract

To address the vibration sensitivity of semi-submersible floating offshore wind turbines （FOWTs） in marine environments, this study proposes a tuned mass damper （TMD） design method based on multi-degree-of-freedom （DOF） coupling effects to achieve precise low-frequency vibration control. Using the International Energy Agency （IEA） 15 MW semi-submersible FOWT model, numerical simulations and multi-DOF free decay tests were conducted. The dominant frequencies of key modes under multi-DOF coupling effects were identified through time-domain and frequency-domain analyses. This study evaluates the vibration control effects of TMDs with optimized parameters at different installation locations on the coupled platform and tower-top vibrations. The results indicate that platform-mounted TMDs significantly outperform nacelle-mounted TMDs in suppressing low-frequency vibrations, reducing tower-top longitudinal displacement and platform pitch angle amplitudes by 30.6% and 46.2%, respectively. Furthermore, the dual installation of TMDs on both the platform and nacelle demonstrates potential in enhancing overall vibration control performance.

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wind turbines / semi-submersible platforms / vibration control / tuned mass damper / multi-degree-of-freedom simulation / parameter optimization

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Yang Yi, Liu Shi, Tao Tao, Yin Jianfei, Zhu Zhicheng, Li Deshun. RESEARCH ON OPTIMIZATION AND LOW-FREQUENCY VIBRATION SUPPRESSION OF TMD FOR FLOATING OFFSHORE WIND TURBINES WITH MULTI-DEGREE-OF-FREEDOM COUPLING[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 9-17 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0220

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