论文标题
LQ最佳控制风力涡轮机的功率跟踪操作
LQ Optimal Control for Power Tracking Operation of Wind Turbines
论文作者
论文摘要
在本文中，提出了单个风力涡轮机的主动功率控制方法。最先进的控制器通常采用单独的控制回路进行扭矩和音高控制。相比之下，我们使用多变量控制方法。详细说明，通过使用参考轨迹进行发电机速度，发电机扭矩和螺距角来实现主动功率控制，以便在天气条件允许的情况下满足所需的电力需求。然后，使用线性二次（LQ）最佳控制器进行参考跟踪。在OpenFast模拟环境中，将控制器与最新方法进行比较。模拟显示类似的主动功率跟踪性能，而LQ最佳控制器会导致机械磨损较低。此外，提出的方法表现出良好的参考跟踪，并通过改善参考轨迹生成进一步的性能提高。
In this paper, an approach for active power control of individual wind turbines is presented. State-of-the-art controllers typically employ separate control loops for torque and pitch control. In contrast, we use a multivariable control approach. In detail, active power control is achieved by using reference trajectories for generator speed, generator torque, and pitch angle such that a desired power demand is met if weather conditions allow. Then, a linear quadratic (LQ) optimal controller is used for reference tracking. In an OpenFAST simulation environment, the controller is compared to a state-of-the-art approach. The simulations show a similar active power tracking performance, while the LQ optimal controller results in lower mechanical wear. Moreover, the presented approach exhibits good reference tracking and by improving the reference trajectory generation further performance increases can be expected.
