摘要
主要研究了漂浮式海上风力发电机组的独立变桨距控制技术。首先概述了当前海上风电的发展情况,重点介绍漂浮式海上风力发电机组,分析了漂浮式平台的流体动力学和运动学特征,建立了平台的模型方程。借鉴陆上风力发电机组独立变桨距控制器的控制策略,将平台的纵摇、艏摇和发电机的输出功率作为变桨距控制器的控制目标,针对风力发电机的非线性设计了专家PID控制器,利用d-q坐标变换技术将控制量分配到3个桨叶。为了验证控制器的可行性,在国外成熟的风力发电机非线性模型FAST上进行仿真试验,将结果与不对平台运动进行控制时和采用统一变桨距控制器时的结果进行对比,对比结果表明独立变桨距技术能有效减小平台的纵摇运动,并且对输出功率的影响较小。
The yaw and individual pitch control of floating offshore wind turbines was presented. The hydrodynamics and kinematics of the floating platform were presented, and the platform model was built. The control strategy of onshore wind turbine was taken as reference. The pitch angle, yaw and power were taken as control objects. Expert PID controllers were designed to overcome the nonlinearity, and d-q axis transformation was used to translate the control signals to the three blades. To verify the controller, the simulation based on FAST has been carried out. The results showed that the individual controller can effectively reduce the pitch angle of the platform with little influence to the power
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第4期600-608,共9页
Acta Energiae Solaris Sinica
基金
国家自然科学基金重点项目(50735004)
国家自然科学基金(50975253)
