Typhoon-Resilient Floating Wind Turbine Platform

Reduced displacements in 5 DOF

The spar platform more effectively suppresses multi-degree-of-freedom motions and top tower fore-aft displacement than the semi-submersible under extreme typhoon conditions, and possesses a larger capsizing moment within small inclination angles.

Xie, Jiaojie · Wang, Hao · Cai, Xin · Xin, Zhiqiang · Lei, Ren · Maowen, Cai

Ocean Engineering 2025

Specifications

Sway-to-surge amplitude ratio

{'zh': '120.91', 'en': '120.91'} %

Yaw-to-pitch amplitude ratio

{'zh': '97.81', 'en': '97.81'} %

Advantages

Reduced 5-DOF displacements

Under extreme typhoon conditions, the spar platform shows significantly reduced displacements in surge, sway, roll, pitch, and yaw compared to the semi-submersible, indicating lower overall motion amplitudes.

Lower tower-top displacement

The spar platform minimizes top tower fore-aft displacement, helping reduce vibration loads at the rotor and nacelle, thereby improving structural fatigue life.

Higher capsizing resistance

Within small inclination angles, the spar platform exhibits a larger capsizing moment, indicating higher resistance to overturning from initial disturbances during typhoon onset.

Applications

• floating offshore wind：Provides platform selection basis for floating wind turbine structural design in typhoon-prone areas.
• wind energy in typhoon-prone regions：Evaluates motion responses of floating wind turbines under extreme typhoon conditions, supporting typhoon adaptation design.
• floating platform structural design：Provides comparative performance data of two mainstream floating platforms under typhoon conditions.
• ocean engineering structures：Reveals multi-degree-of-freedom coupled responses of floating wind turbine platforms under extreme sea states.