A New Conceptual Design and Dynamic Analysis of a Spar-Type Offshore Wind Turbine Combined with a Moonpool
A New Conceptual Design and Dynamic Analysis of a Spar-Type Offshore Wind Turbine Combined with a Moonpool
复制标题
结合月池的翼梁式海上风力发电机的新概念设计与动态分析
作者：
T. Pham;Hyunkyoung Shin
漂浮在海上的风力涡轮机有望提供丰富的能源。目前，浮式风力发电系统的高效性能和经济性受到了广泛关注。本文旨在开发一个Spar型平台，以支持一个5兆瓦的参考风力涡轮机在水深150米。Spar型平台包括位于中心的船井。设计优化过程由三个步骤组成;第一步使用电子表格计算平台尺寸;第二步是波浪条件下响应的频域分析;最后一步是完全耦合的仿真时域分析，以获得风、波浪和海流组合条件下的动态响应。通过在开放式船井内部设置水柱，系统对水平和旋转运动的动态响应显著降低。这些运动的减少导致机舱加速度和塔架基座弯矩的减少。在优化过程的基础上，提出了一种在使用条件和极端条件下都具有良好性能的船井组合式平台。
Floating offshore wind turbines promise to provide an abundant source of energy. Currently, much attention is being paid to the efficient performance and the economics of floating wind systems. This paper aims to develop a spar-type platform to support a 5-MW reference wind turbine at a water depth of 150 m. The spar-type platform includes a moonpool at the center. The design optimization process is composed of three steps; the first step uses a spreadsheet to calculate the platform dimensions; the second step is a frequency domain analysis of the responses in wave conditions; and the final step is a fully coupled simulation time domain analysis to obtain the dynamic responses in combined wind, wave, and current conditions. By having a water column inside the open moonpool, the system’s dynamic responses to horizontal and rotating motions are significantly reduced. Reduction of these motions leads to a reduction in the nacelle acceleration and tower base bending moment. On the basic of optimization processes, a spar-type platform combined with a moonpool is suggested, which has good performance in both operational conditions and extreme conditions.