Synthesizing the advantages of the semi-submersible,Spar and TLP types of floating offshore wind turbine foundations,a new type of submersible foundation for floating wind turbines was put forward.A coupled dynamic analysis of the wind turbine and its submersible foundation in different wind conditions was carried out by using the FAST software.The results show that the natural frequencies of the tower combined with the submersible foundation are of no coincidence with the normal wave frequencies and the 1P and 3P operating frequencies of the wind turbine.The surge and pitch of the submersible foundation are correlated with the wind turbine thrust force in different wind conditions.
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