摘要
双馈风力发电系统需要在风速多变的情况下实现发电功率的最大输出与平稳运行,系统的抗干扰性能与应变性至关重要.将线性自抗扰控制器(LADRC)应用于风力发电系统,风速大于额定风速时,采用LADRC进行变桨控制,实现恒功率输出;当风速小于额定风速时,采用LADRC进行最大功率追踪,实现最大功率输出.仿真分析验证了LADRC控制抗干扰能力强的优良特性,对风速的不确定性具有较好的估计和补偿作用,能够对发电系统的恒功率区功率输出实现有效控制,又使控制参数大幅度减少,控制过程简单可行.
Doubly fed wind power generation system needs to achieve the maximum output and stable operation under the condition of variable wind speed,so the anti-interference performance and strain of the system are very important.In this paper,the linear active disturbance rejection controller(LADRC)is applied to the wind power generation system.When the wind speed is greater than the rated wind speed,the LADRC is used for pitch control to achieve constant power output;when the wind speed is less than the rated wind speed,LADRC is used to track the maximum power to achieve the maximum power output.The simulation results show that LADRC control has strong anti-interference ability and has good estimation and compensation function for wind speed uncertainty.It can effectively control the power of constant power area of power generation system,and greatly reduce the control parameters,and make the control process feasible.
作者
李华柏
谢永超
胡扬
LI Huabo;XIE Yongchao;HU Yang(Hunan Railway Professional Technology College,Zhuzhou 412001,Hunan China)
出处
《河南科学》
2021年第2期190-195,共6页
Henan Science
基金
湖南省自然科学基金资助项目(2020JJ6095)。
关键词
线性自抗扰控制
双馈电机
风力机
变桨距
最大功率追踪
扩张状态观测器
风能利用系数
LADRC
doubly-fed induction generator
wind turbine
variable pitch
maximum power tracking
extended state observer
wind energy utilization coefficient
