风波作用下，漂浮式风力机平台的浮动特性会直接影响上部风力机正常运行。为提高平台稳定性，设计一种新型铰接式平台。基于辐射/绕射与有限元方法，结合叶素动量理论，对比分析了风波作用下新平台与立柱式（Spar）平台时频响应特性。结果表明：在纵荡、垂荡及纵摇自由度上，新平台幅值响应算子随波浪频率增大变化趋势与Spar平台基本一致，但峰值明显减小；新平台附加质量较原平台增大，且垂荡自由度上附加质量增加最明显；时域分析中，新平台3个自由度响应幅值较原平台分别减小约83.9%，61.9%及75.5%，标准差减小约76.4%，60%及77.1%，表现出良好的稳定性；功率谱分析中，新平台响应峰值始终小于原平台，且无响应集中现象，波频性能更优。

Under the action of wind and wave,the floating characteristics of offshore wind turbine platform will affect the normal operation of the upper wind turbine.In order to improve the stability of the platform,a new type articulated platform was designed.Based on radiation/diffraction and finite element method,combined with blade element momentum theory,the timefrequency response characteristics of the new platform and Spar platform under the action of wind and wave were compared and analyzed.The results show that,the response amplitude of the new platform has the same trend with the increase of wave frequency as that of the Spar platform in the degree of freedom of surge,heave and pitch,but the peak value decreases obviously.The additional mass of the new platform increases compared with that of the original platform,and the new platform has the most significant increase in its additional mass in the degree of freedom of heave.Compared with the original platform,the response amplitude of the new platform decreases by about 83.9%,61.9% and 75.5% respectively in the three degrees of freedom,and the standard deviation decreases by about 76.4%,60% and 77.1% respectively in the time domain analysis.The new platform showes good stability.In the power spectrum analysis,the response peak value of the new platform is always smaller than that of the original platform,and there is no response concentration phenomenon,and the wave frequency performance is better.

TK83

国家自然科学基金（52006148,51976131）；上海“科技创新行动计划”地方院校能力建设项目（19060502200）