CAJ | 학술논문

海上漂浮式风力机在随机风载荷和随机波浪载荷的共同作用下运行，其自身结构及系泊系统的合理设计对实现其稳定性起决定性作用。该文以 Spar 结构漂浮式风力机为研究对象，利用牛顿-欧拉方程建立了系统动力学方程，得到了对漂浮式风力机两个最重要的运动形式(纵荡和纵摇)的动力学响应；利用快速傅里叶变换得到了漂浮式风力机纵荡和纵摇固有频率。基于此模型，并以NREL 5MW Spar结构漂浮式风力机为算例，分析了系泊系统缆绳3个参数：系泊半径、导缆孔位置和缆绳长度对系统稳定性的影响，得到了系统纵荡、纵摇和缆绳张力随3个参数的变化规律，为漂浮式风力机系泊系统设计提供了参考。
해상표부식풍력궤재수궤풍재하화수궤파랑재하적공동작용하운행，기자신결구급계박계통적합리설계대실현기은정성기결정성작용。해문이 Spar 결구표부식풍력궤위연구대상，이용우돈-구랍방정건립료계통동역학방정，득도료대표부식풍력궤량개최중요적운동형식(종탕화종요)적동역학향응；이용쾌속부리협변환득도료표부식풍력궤종탕화종요고유빈솔。기우차모형，병이NREL 5MW Spar결구표부식풍력궤위산례，분석료계박계통람승3개삼수：계박반경、도람공위치화람승장도대계통은정성적영향，득도료계통종탕、종요화람승장력수3개삼수적변화규률，위표부식풍력궤계박계통설계제공료삼고。
The floating wind turbine works under the condition of random wind and wave loads, its structure and rational design of mooring system play a critical role in the system stability. A Spar-type floating platform was selected as the research object; the pitch and surge responses, which are the most important motions, were obtained by using Newton-Euler equation. The natural frequency of surge and pitch were obtained by using fast Fourier transform (FFT). Based on this model, taking NREL 5MW Spar type floating wind turbine as an example, the effects of mooring line parameters (mooring radius, fairlead location and mooring line length) on the stability of floating wind turbine were analyzed. The relationships among surge, pitch and mooring line tension changing with the three parameters were obtained. The conclusions are valuable reference for mooring system design.