漂浮式风力机平台结构设计与模态分析

Structure design and modal analysis of platforms for floating wind turbines

风力机发展趋势使深海漂浮式风力机有着广阔发展前景.分析了漂浮式多浮柱平台的稳定机理,根据美国可再生能源实验室5 MW风力机模型,提出了平面对称结构浮柱平台设计思路,同时初步建立了深海多浮柱平台三维有限元模型.结合机械振动理论,采用有限元计算软件对三浮柱、四浮柱以及六浮柱平台模型进行模态分析,为进一步开展漂浮式平台的优化设计提供了一定参考依据.

With the rapid development of wind power utilization, deep-sea floating wind turbines will have a promising future. In this paper, different kinds of ocean floating structures were compared in order to find the appropriate platform for floating wind turbines. Based on the 5 MW wind turbine model that presented by the U. S. National Renewable Energy Laboratory （NREL）, design ideas for multi-floater platforms were proposed and analyzed. Combining the theory of mechanical vibration, the model analysis of the designed platforms was carried out using the finite-element simulation software, which provides a reference to optimum design of floating platforms.