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A Novel Dynamics Analysis Method for Spar-Type Floating Offshore Wind Turbine

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Abstract

The dynamic behavior of floating offshore wind turbine (FOWT) is crucial for its design and optimization. A novel dynamics analysis method for the spar-type FOWT system is proposed in this paper based on the theorem of moment of momentum and the Newton's second law. The full nonlinearity of the equations of motion (EOMs) and the full nonlinear coupling between external loads and the motions are preserved in this method. Compared with the conventional methods, this method is more transparent and it can be applied directly to the large-amplitude rotation cases. An in-house code is developed to implement this method. The capability of in-house code is verified by comparing its simulation results with those predicted by FAST. Based on the in-house code, the dynamic responses of a spar-type FOWT system are investigated under various conditions.

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Author information

Correspondence to Zhi-ke Peng.

Additional information

Foundation item: This work is financially supported by the National Natural Science Foundation of China (Grant No. 11632011).

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Tian, X., Xiao, J., Liu, H. et al. A Novel Dynamics Analysis Method for Spar-Type Floating Offshore Wind Turbine. China Ocean Eng 34, 99–109 (2020). https://doi.org/10.1007/s13344-020-0010-z

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Key words

  • dynamics analysis method
  • floating offshore wind turbine
  • spar platform
  • dynamic yawing