基于自抗扰技术的DFIG网侧换流器直接功率控制策略探究

Study DFIG grid-side converter Direct Power Control strategy based on ADRC method

针对双馈型风力发电机中网侧变换器,在分析其数学模型的基础上,采用基于自抗扰控制的直接功率控制策略对网侧变换器进行控制。并且利用Matlab/Simulink软件对设计的控制器进行仿真,仿真结果显示,该控制策略能够保证直流母线电压稳定,网侧功率因数为1,当系统发生扰动时,该控制策略较传统PI控制具有更强的鲁棒性,控制效果理想。

This paper focuses on the grid side converter which is used for the double-fed induction wind power generation system.On the basis of the analysis of the mathematical model,using the Direct Power Control active disturbance rejection controller（ADRC）control the grid side converter.And using MATLAB/Simulink simulation software to make simulation experiments for the design of the controller,simulation results show that the control strategy can ensure the DC bus voltage stability, grid-side power factor is 1, and when a disturbance or perturbation occurs,theADRC control strategy has stronger robustness than the traditional PI control strategy,and the control results are satisfactory.