新型垂荡板对漂浮式风力机半潜式平台垂荡运动的抑制效果研究

Research on Heave Motion Inhibition for the Semi-submersible Platform of Floating Wind Turbines with New Heave Plates

设计出一种能有效抑制垂荡运动的新型装配有垂荡板的漂浮式风力机半潜式平台,分析其在风、浪、流载荷联合作用下的动态响应,并与3浮体3立柱结构半潜式平台进行比较。结果表明:在频域分析中,垂荡板对垂荡方向运动响应的抑制效果最好,纵摇方向次之,对横荡方向运动响应无明显抑制效果;在横荡、纵摇和垂荡方向上原平台与垂荡板平台的辐射阻尼均较接近,但与原平台相比,垂荡板平台的附加质量较大。在时域分析中,与原平台相比,垂荡板平台在横荡、纵摇和垂荡方向的运动响应均较小,其中垂荡方向运动响应抑制效果最好,纵摇方向次之,横荡方向抑制效果最差。

A new type of semi-submersible platform equipped with a heave plate capable of effectively suppressing the heave motion was designed for floating wind turbines, while its dynamic response to the combined action of wind, wave and flow load was analyzed, which was subsequently compared with that of the three-buoy three-pillar semi-submersible platform. Results show that in the frequency-domain analysis, the heave plate has best suppression effect on the heave motion, followed by the pitch and sway motion;the radiation damping of original platform is closer to that of the heave plate platform in the sway, pitch and heave direction, but the additional mass of the latter is relatively large. In the time-domain analysis, compared with original platform, all the motion responses of heave plate platform are relatively small in the sway, pitch and sway direction, with best suppression effect on the heave motion, followed by the pitch and sway motion.