【摘要】 为了实现大功率风力发电系统的恒功率控制,首先建立了基于直驱型PMSG风力发电系统的数学模型;其次,以功率偏差为控制器的输入信号,设计了一种基于自抗扰算法的风力发电系统变桨距控制器。最后,在阵风叠加随机风的作用下进行仿真研究。仿真结果表明,该控制器能够有效地控制桨距角,可以实现额定风速以上时系统输出功率的恒定。更多还原

【Abstract】 In order to realize the constant power output of high-power wind generating systems,the mathematic model of a wind generating system based on direct driving PMSG is established.Taking the power deviation as the control input signal,a variable-pitch controller based on an active disturbances rejection algorithm was designed for wind generating systems to control the pitch angle of the wind power system.The simulation was undertaken under random wind.The simulation results indicate that the controller can effectively control the pitch angle and realize the goal of constant power output of the system when the wind exceeds the rated wind velocity.更多还原