Structural vibration characteristics of offshore wind turbines under tropical cyclones

Offshore wind turbines (OWTs) promise the exploitation of abundant Aeolian resources in marine regions but are prone to natural hazards, e.g., tropical cyclones. With the growing development of OWTs toward deeper waters, the improved understanding of structural vibration behaviour of OWTs under extreme conditions becomes crucial for evaluating their safety and serviceability. This paper aims to investigate the impact of environmental and operational conditions on the structural vibration response features of the OWTs under the influence of a real tropical typhoons event, i.e., Talim in 2023. Both environmental and operational states of the OWT were monitored during the typhoon period, with structural vibration responses simultaneously recorded. The results indicate that wind resources can be efficiently utilised during typhoon events through the implementation of appropriate control strategies. The findings not only advance understanding of OWT vibration behaviour under tropical cyclones, but also promise the exploitation of abundant Aeolian resources during the event with proper control strategies.