基于线性自抗扰控制的柔性多状态开关直流电压控制策略

Flexible Multi-state Switch DC Voltage Control Strategy Based on Linear Active Disturbance Rejection Control

为提高柔性多状态开关(flexible multi-state switch,FMSS)的抗干扰能力,以保证在系统干扰的情况下维持直流电压稳定,该文提出一种基于线性自抗扰控制(linear active disturbance rejection control,LADRC)的FMSS直流电压控制策略,其控制策略可以将作用于研究对象的不确定因素整合成系统总扰动,并对扰动进行实时跟踪估计和补偿,以此抑制系统干扰。通过Matlab/Simulink对FMSS建模,并设计线性自抗扰控制器模块来替换电压外环和电流内环中的PI控制器模块。在系统干扰的情况下,对FMSS的抗干扰能力进行实验验证。仿真结果表明,与传统PI双环控制策略相比,基于LADRC的控制策略能更好地应对系统干扰,能有效提高系统干扰抑制的能力,维持FMSS直流电压稳定。

For improving the anti-interference ability of the flexible multi-state switch(FMSS)so to ensure stable DC voltage in the case of system interference,a kind of FMSS DC voltage control strategy based on linear active disturbance rejection control(LADRC)is proposed in this paper.Its control strategy can integrate the uncertain factors acting on the research object into the total disturbance of the system,and real-time tracking estimation and compensation of the disturbance so as to suppress the system interference.The FMSS is modeled by Matlab/Simulink,and the linear active disturbance rejection controller module is designed to replace the PI controller module in the voltage outer loop and the current inner loop.Under the condition of system interference,the anti-interference ability of FMSS is experimentally verified.The simulation results show that compared with the traditional PI double-loop control strategy,the LADRCbased control strategy can better deal with a variety of system interference,can effectively improve the ability of system interference suppression and maintain stability of the FMSS DC voltage.