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<p>This study investigates the performance improvement of floating offshore wind turbines (FOWTs) equipped with dual circular heave plates under extreme turbulent wind conditions. The focus is on optimizing the vertical spacing between the plates to reduce platform dynamic responses. Existing research mainly considers fixed plate spacings and has not fully addressed the adaptability of heave-plate configurations to varying sea states or developed systematic optimization strategies. To fill this gap, a numerical simulation framework combined with free-decay tests is applied to evaluate natural periods, damping ratios, response amplitudes, and the optimal spacing for extreme conditions. Results show that the spacing between the dual circular heave plates strongly affects both heave and pitch modes. A 0.5<i>H</i> spacing exhibits superior motion suppression under irregular waves, whereas a 0.75<i>H</i> spacing effectively avoids resonance between heave and pitch modes under turbulent winds, resulting in more stable loading and moderate tower-base bending moments. These findings provide practical guidance for the design of dual circular heave plates and contribute to enhancing FOWT stability under complex marine conditions.</p>

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Performance Optimization of Floating Offshore Wind Turbine Under Extreme Turbulent Winds Using Dual Circular Heave-Plate Design

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Qiuyu Yang,
  • Xuechao Tang,
  • Shijing Wu,
  • Mingxin Yu,
  • Xue Xue,
  • Jingyi Xie

摘要

This study investigates the performance improvement of floating offshore wind turbines (FOWTs) equipped with dual circular heave plates under extreme turbulent wind conditions. The focus is on optimizing the vertical spacing between the plates to reduce platform dynamic responses. Existing research mainly considers fixed plate spacings and has not fully addressed the adaptability of heave-plate configurations to varying sea states or developed systematic optimization strategies. To fill this gap, a numerical simulation framework combined with free-decay tests is applied to evaluate natural periods, damping ratios, response amplitudes, and the optimal spacing for extreme conditions. Results show that the spacing between the dual circular heave plates strongly affects both heave and pitch modes. A 0.5H spacing exhibits superior motion suppression under irregular waves, whereas a 0.75H spacing effectively avoids resonance between heave and pitch modes under turbulent winds, resulting in more stable loading and moderate tower-base bending moments. These findings provide practical guidance for the design of dual circular heave plates and contribute to enhancing FOWT stability under complex marine conditions.