基于张力腿平台风能-波浪能集成结构系统动力分析

COUPLED DYNAMIC ANALYSIS OF A COMBINED WIND-WAVE ENERGY SYSTEM BASED ON A TENSION LEG PLATFORM

提出一种基于张力腿平台(TLP)的新型风能-波浪能集成结构的概念设计方案,分析该集成系统在典型海况下的水动力响应特征。该集成模型由2个外侧迎浪纵摇式波浪能装置(WEC)、一个内侧TLP模块以及一个DTU 10 MW风力机组成。基于BEM方法研究该集成系统风力机叶片的气动性能,并基于势流理论方法综合考虑WEC和平台的多体机械耦合和水动力耦合效应,建立了该集成结构系统的空气动力与水动力耦合时域分析模型。重点研究典型运行海况下该新型集成结构系统的结构动力响应特征及风能-波浪能输出功率特征,并验证其在极端海况下的安全性能。

A new wind energy and wave energy combined system based on a tension-leg platform(TLP)was proposed,and the hydrodynamic responses of the combined system under typical sea cases were investigated. The combined system includes two outermost pitch-type wave energy converters(WEC)and a central TLP with a DTU 10 MW wind turbine(WT). The aerodynamic performance of the WT was investigated based on the BEM method,and the hydrodynamic interaction effect and mechanical coupling effect between the WECs and TLP were taken into consideration. The coupled aerodynamic and hydrodynamic numerical model of the combined system was established. The characteristics of main dynamic responses and wind/wave energy production of the combined system under typical operational sea cases were clarified,and the safety of the combined system under extreme sea cases was verified.