Research on improvement method for dynamic responses of floating offshore wind turbines

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (3) : 20-26.

YE Zhou1,2，CHENG Xin1，ZHOU Guo-long1，LI Chun1,2

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Abstract

To research the improvement methods for dynamic responses of floating offshore wind turbine(FOWT), whole machine models for Spar platform supported FOWT were built to study the influence of helical strake and circular plate on dynamic response. In order to research whether the two methods can improve the performance of FOWT, Time-domain and frequency-domain performances of the two structures were gained to compare with the normal structure. The results show that the heave and pitch motion amplitude of FOWT with helical strake are effectively suppressed. While the attachment with circular plate can decrease heave frequency-domain amplitude but shows no improvement in surge and pitch motion. In addition, both two methods succeed to improve the kinematic performance when considering the combination load of wind, wave and current. Helical strake has better improvements than circular.

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floating wind turbine / Spar platform / dynamic response / finite element analysis

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YE Zhou1,2，CHENG Xin1，ZHOU Guo-long1，LI Chun1,2. Research on improvement method for dynamic responses of floating offshore wind turbines[J]. Journal of Vibration and Shock, 2016, 35(3): 20-26

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