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Journal of Vibration Testing and System Dynamics 10(3) (2026) 271--281 | DOI:10.5890/JVTSD.2026.09.005

Aissa Benabdesselam, Manal Messadi, Karim Kemih

L2EI laboratory, Jijel University, BP 98 Ouled Aissa Jijel 18000 Algeria

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Abstract

Offshore wind turbines are particularly vulnerable to perturbations and uncertainties, due to the dynamic and unpredictable nature of the wind, ocean currents, and environmental factors. These external disturbances can introduce chaotic behavior, leading to instability in the turbine's control system, reducing efficiency and performance. The chaotic dynamics, often caused by fluctuating wind speeds and variable sea conditions, make it challenging to maintain stable and reliable operation. To address these challenges, advanced control strategies, such as sliding mode control (SMC) combined with passivity theory, can be employed. This approach mitigates chaotic behavior by ensuring the system remains stable even under the influence of external disturbances. By leveraging the robustness of passivity-based control, the strategy accommodates variations in wind speed, turbulence, and mechanical uncertainties, ensuring optimal turbine performance and reliability in the face of perturbations. Simulation results indicate that this method can effectively handle chaotic dynamics, maintaining desired operational parameters despite the inherent uncertainties of the offshore environment.

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