Advanced Control of Offshore Semi-submersible Wind Turbines

风能是世界上增长最快的可再生和可持续发电能源。提高风力涡轮机和风力发电场效率的一个趋势是将它们转移到深水海域，那里的风比陆上风更强、更稳定，我们需要在那里让涡轮机漂浮起来。由于基础不固定，浮式风力机可以利用其重新定位的能力来缓解风力机之间的尾迹效应，增加多个风力机的总功率，并降低风电场中风力机的疲劳负荷。然而，浮式海上风力发电机组运行中的挑战之一是以不可预测的方式作用于平台的海浪干扰。为了提高风力发电能力，需要通过控制工程技术抑制平台和涡轮机在波浪激励下的不良振动运动，从而将风能成本降到最低。

Wind is the fastest growing renewable and sustainable energy in electricity generation around the world. One trend to improve the efficiency of wind turbines and wind farms is to move them into the deepwater sea where the wind is stronger and more consistent than the onshore wind and where we need to set the turbines afloat. Due to the unfixed foundation, floating wind turbines can take advantage of their relocation capability to alleviate the wake effect between turbines, to increase the total power of multiple turbines, and to reduce the fatigue load of the turbines in the wind farm. However, one of the challenges in the operation of floating offshore wind turbines is the wave disturbance which acts on the platforms in an unpredictable manner. To enhance wind power generation, the undesirable vibration motions of the platform and the turbine excited by the wave need to be suppressed, and consequently wind energy cost need to be minimized, by control engineering technologies.