Barge平台漂浮式风力机动态响应及稳定性控制研究

DYNAMIC RESPONSE AND STABILITY CONTROL OF BARGE PLATFORM FLOATING WIND TURBINE

将调谐质量阻尼器(TMD)配置于漂浮式风力机机舱或塔架可提高其整体稳定性,但加剧了塔基疲劳载荷。为此,在平台内部配置TMD进行减振控制,以ITI Barge平台为研究对象,建立漂浮式风力机动力学模型,研究塔顶前后和侧向位移随TMD质量、阻尼及安装位置的变化规律,采用多岛遗传算法求得最优TMD参数,对比分析风波载荷作用下无TMD控制、机舱TMD控制及平台TMD控制对漂浮式风力机动态响应特性的影响。结果表明:塔顶前后和侧向位移随平台TMD参数变化较为显著,当位于相同位置处TMD质量和阻尼较大时,塔顶前后和侧向位移明显减小,平台TMD质量和阻尼不变时,塔顶前后和侧向位移随TMD位置升高逐渐减小。风波载荷作用下,TMD对漂浮式风力机动态响应控制效果较为明显,但各部位控制效果不同,塔顶侧向位移、平台横摇角及塔基横摇弯矩控制效果最为显著。此外,较之机舱TMD控制,平台TMD控制时漂浮式风力机稳定性更好。

When TMD is used in the nacelle or tower of the floating wind turbine, its stability can be improved, but the fatigue load of the tower base is increased. In order to solve this problem, the ITI Barge platform is taken as the research object, TMD is arranged inside the platform for vibration damping control, and the dynamic model of the floating wind turbine is established to study the change law of the front-after and side-side displacement of the tower top with the TMD mass, damping and installation position. The multi-island genetic algorithm is used to obtain the optimal TMD parameters, and the effects of without TMD control, nacelle TMD control and platform TMD control on the dynamic response characteristics of floating wind turbine are compared and analyzed. The results show that the front-after and side-side displacements of the tower top change significantly with platform TMD parameters. When mass and damping of the platform TMD at the same location are large, the front-after and side-side displacements of the tower top decrease significantly. When mass and damping of the platform TMD remain unchanged, the front-after and side-side displacements of the tower top decrease gradually with the increase of the TMD location. Under the action of wind and wave, the effect of TMD on the dynamic response control of floating wind turbines under wind load is more obvious, but the control effect of each part is different. The side-side displacement of the tower top, the platform roll angle and the tower base roll bending moment control effect are the most significant. In addition, compared with the nacelle TMD control, the stability of the floating wind turbine is better when controlled by the platform TMD.