Modelling and optimization of a passive structural control design for a spar-type floating wind turbine
Modelling and optimization of a passive structural control design for a spar-type floating wind turbine
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DOI：
10.1016/j.engstruct.2014.03.011
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发表时间：
2014-06
影响因子：
5.5
通讯作者：
Yulin Si;H. Karimi;Huijun Gao
中科院分区：
文献类型：
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作者：
Yulin Si;H. Karimi;Huijun Gao
深水浮式涡轮机由于具有额外的自由度，与固定底安装相比，需要承受更大的结构载荷。为了有效地降低风力机的载荷，对一种翼梁式漂浮涡轮机的被动结构控制设计进行了评估，提出了在翼梁平台上安装调谐质量阻尼器（TMD）的策略。首先，基于达朗贝尔惯性力原理，建立了涡轮机纵荡-升沉-变桨运动的数学模型。然后，通过比较所提出的模型和最先进的模拟器的输出进行参数估计。针对不同的性能指标，采用不同的优化方法对TMD参数进行优化。最后，在不同的风浪条件下，对优化后的TMD进行了高保真的非线性仿真。仿真结果验证了不同TMD参数选择的有效性和局限性，为今后利用结构控制方法对漂浮式涡轮机进行减载的改进提供了参数分析和设计依据。
Compared with fixed-bottom installation, deep water floating wind turbine has to undergo more severe structural loads due to extra degrees of freedom. Aiming for effective load reduction, this paper deals with the evaluation of a passive structural control design for a spar-type floating wind turbine, and the proposed strategy is to install a tuned mass damper (TMD) into the spar platform. Firstly, a mathematical model for wind turbine surge-heave-pitch motion is established based on the D’Alembert’s principle of inertial forces. Then, parameter estimation is performed by comparing the outputs from the proposed model and the state-of-the-art simulator. Further, different optimization methods are adopted to optimize TMD parameters when considering different performance indices. Finally, high fidelity nonlinear simulations with previous optimized TMD designs are conducted under different wind and wave conditions. Simulation results demonstrate both the effectiveness and limitation of different TMD parameter choices, providing parametric analysis and design basis for future improvement on floating wind turbine load reduction with structural control methods.