Wind farm control using dynamic concepts is a research topic that is receiving an increasing amount of interest. The main concept of this approach is that dynamic variations of the wind turbine control settings lead to higher wake turbulence, and subsequently faster wake recovery due to increased mixing. As a result, downstream turbines experience higher wind speeds, thus increasing their energy capture. In dynamic induction control (DIC), the magnitude of the thrust force of an upstream turbine is varied. Although very effective, this approach also leads to increased power and thrust variations, negatively impacting energy quality and fatigue loading. In this paper, a novel approach for the dynamic control of wind turbines in a wind farm is proposed: using individual pitch control, the fixed‐frame tilt and yaw moments on the turbine are varied, thus dynamically manipulating the wake. This strategy is named the helix approach because the resulting wake has a helical shape. Large eddy simulations of a two‐turbine wind farm show that this approach leads to enhanced wake mixing with minimal power and thrust variations.

中文翻译：

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螺旋线方法：使用动态个体桨距控制来增强风电场中的尾流混合

使用动态概念的风电场控制是一个日益受到关注的研究主题。这种方法的主要概念是，风力涡轮机控制设置的动态变化会导致更高的尾流湍流，并随后由于混合增加而导致更快的尾流恢复。结果，下游涡轮机经受更高的风速，从而增加了其能量捕获。在动态感应控制（DIC）中，上游涡轮的推力大小会变化。尽管非常有效，但这种方法还会导致功率和推力变化增加，从而对能量质量和疲劳负载产生负面影响。本文提出了一种用于风电场中风轮机动态控制的新方法：使用单独的变桨控制，改变风轮机上的固定架倾斜角和偏航力矩，从而动态地操纵唤醒。该策略称为螺旋法，因为产生的尾流具有螺旋形状。对两涡轮风场的大型涡流模拟表明，这种方法可在最小功率和推力变化的情况下增强尾流混合。