海上浮式风机运动对风机结构载荷影响研究

摘要

为了研究风机的叶片及塔柱的结构载荷问题,本文应用空气动力-水动力耦合动态分析模型,模拟风机系统在非定常风场和规则波作用下的单自由度运动响应,并对比和分析风机系统的三种纵向运动对叶片和塔柱结构载荷的影响.研究结果显示:运动响应幅度很大程度上增加了风机的结构载荷,因此降低风机的叶片及塔柱的结构载荷应成为海上风机设计中的重要环节.本文揭示了海上浮式风机的运动对结构载荷的影响特征,为更大兆瓦级浮式风机系统的设计提供优化方向.%To analyze the structural loads at the blade root and tower of a wind turbine,in this study, we used an aerodynamic-hydrodynamic coupled analysis model to simulate the one-degree-of-freedom motion response of an off-shore wind turbine in unsteady wind and regular wave conditions.We also compared and analyzed the influences of three longitudinal motions on the structural loads of the blade and tower.The results show that the motion response dramatically increases the structural loads of the wind turbine,Therefore,reducing the structural loads at the blade root and tower should become an important design requirement.This paper reveals the influence of motion on the structural loads of the offshore floating wind turbine and provides direction for optimizing the design of a larger meg -awatt-level floating wind turbine system.