摘要
有源电力滤波器(APF)控制效果的好坏直接影响补偿性能。传统PI控制器不能够无静差地跟踪谐波指令信号,且抗干扰能力差,参数整定困难。在d-q坐标系下,通过对前馈解耦的电流内环控制器进行改进,利用模糊PI控制器与重复控制器并联构成的复合控制策略,增强了系统的鲁棒性和提高了系统的补偿精度。该控制器中利用模糊控制技术对PI参数进行在线实时自适应整定。利用重复控制的零稳态误差能力保证了装置的稳态精度。在传统的电压外环PI控制中引入模糊控制以提高系统的动态性能。采用上述方法,在Matlab/Simulink环境下,搭建其仿真模型,结果表明电流内环复合控制较PI控制具有更快的动态响应和较高的补偿精度,电压外环模糊PI控制较PI控制响应更快。
The controller of active power filter（ APF） affects its compensation performance directly. The traditional PI controller cannot track the harmonic command signal without error,and the anti-interference ability is poor,the parameter setting is difficult. The inner loop controller of the feed-forward decoupling is improved under the d-q coordinate system,and the composite control strategy composed of the fuzzy PI controller and the repetitive controller is used to enhance the system robustness and improve system compensation accuracy. The fuzzy control technology is used to adjust the PI parameters in real time. The steady-state accuracy of the device is ensured by the zero-steady-state error of repeated control. In the traditional voltage outer loop PI control,fuzzy control is introduced to improve the dynamic performance of the system. Simulation results in Matlab/Simulink environment show that the internal control of the inner loop has faster dynamic response and higher compensation accuracy than the PI control. The fuzzy outer loop fuzzy PI control is faster than the PI control response.
作者
张道峰
王云亮
ZHANG Dao-feng;WANG Yun-liang(School of Electrical Electronics Engineering,University of Technology of Tianjin,Tianjin 300384,Chin;Tianjin Key Laboratory for Control Theory ＆ Application in Complicated System,Tianjin University of Technology,Tianjin 300384,China)
出处
《计算机仿真》
北大核心
2018年第11期108-112,174,共6页
Computer Simulation
关键词
源电力滤波器
重复控制
模糊控制
电流畸变率
动态性能
Active power filter （APF）
Repetitive control
Fuzzy control
Current distortion
Dynamic perform-ance
