摘要
为了改善三相电压源型整流器(VSR)的动静态性能,实现其交流侧高功率因素输入,在利用三相半桥VSR的d-q模型及其传统电压电流双闭环控制策略基础上,应用模糊控制思想设计了一种电压外环采用模糊PI控制,电流内环仍采用传统PI控制的模糊PI控制器。这种方法结合了模糊控制和PI调节的优点,可以实时地智能化地调整PI参数,从而使系统具有更快的响应速度和更小的超调。仿真结果表明,模糊PI控制比传统的闭环控制具有更好的快速性和鲁棒性。
In order to improve the dynamic and static performance of 3-phasevoltage source rectifier(VSR),and enhance the power factor of AC input side,based on d-q model and traditional double closed-loop control strategy of voltage and current of the 3-phase half-bridge VSR,a fuzzy-PI controller is designed.The theory of fuzzy control is used in this new controller,its voltage outer-loop utilizes fuzzy-PI control,but its current inner-loop applies traditional PI control.The advantages of fuzzy control and PI regulation are integrated in this approach,and the PI parameters can be intelligently adjusted in real time.Thereby,the response speed of the system is much quicker and the overshoot is smaller.The simulation result shows that the fuzzy-PI control is much better in rapidity and robustness,comparing with traditional closed-loop control.
出处
《控制工程》
CSCD
北大核心
2009年第S3期105-107,110,共4页
Control Engineering of China
关键词
电压源型整流器
闭环控制
模糊PI控制
智能化
voltage source rectifier
closed-loop control
fuzzy-PI control
intelligent
