基于模糊PI三相VSR控制系统的研究

摘要

为了提高三相电压型PWM整流器(VSR)的动静态性能，针对三相VSR传统PI控制器参数固定的缺陷性，在传统双闭环控制策略的基础上将电压外环采用模糊PI控制器，在线调整PI控制器的两个参数，增强系统的鲁棒性。最后利用小波分析和MATLAB仿真分析了三相VSR的运行数据，通过比较可知，模糊PI矢量控制系统与传统PI矢量控制系统相比具有更好的动态稳定性、跟踪性和抗干扰能力，证明了所提方法的正确性。%Focusing on the defects of traditional PI control er of three-phase VSR-fixed parameter,this disser-tation,based on the traditional double-closed loop strategy,proposes to employ fuzzy PI control er for outer voltage loop in order to improve dynamic and static performance,which can improve the robustness and opti-mize the performance of the system.The fuzzy PI vector system vector system is superior the conventional PI vector control system in dynamic stability,speed tracking and anti-interference by wavelet analysis and MAT-LAB simulation analyzing the running data of three phase VSR,which demonstrates excel ent performance of proposed method.