基于模糊自适应滑模变结构的PWM整流器  

The PWM Rectifier Based on Fuzzy Adaptive Sliding Mode Variable Structure

作　　者：顾华利 张开如[1,2] 狄东照 樊英杰[1,2] 王毅[1,2] 李娅芸 

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590 [2]山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛266590

出　　处：《电网与清洁能源》2016年第8期40-45,50,共7页Power System and Clean Energy

基　　金："十二五"国家科技支撑计划项目(2012BAB13B04);国际(中国-南非)科技合作项目(CS06-L02)~~

摘　　要：为了提高三相电压型PWM整流器(VSR)的抗扰能力,通过分析三相VSR的数学模型,提出了基于同步旋转d-q坐标系的模糊自适应滑模变结构控制算法。该算法考虑到传统双闭环PI的缺陷性,将外环设置为模糊控制器和滑模变结构控制器相结合,利用模糊控制规则实时调整滑模趋近律,在提高系统鲁棒性的同时又能削弱滑模面上的抖振;内环将PI控制改为比例控制,简化系统结构。小波分析和MATLAB分析运行数据结果表明,基于模糊自适应滑模控制的三相VSR系统相对于传统双闭环PI系统具有更强的动态性能和跟踪能力。In this paper, a fuzzy adaptive sliding mode variable structure control algorithm based on synchronous rotat- ing reference frame is presented through analyzing the mathe- matical model of three-phase voltage-source PWM rectifier （VSR）, which aims to improve the anti-interference perfor- mance. Considering the defects of traditional PI controller, this paper proposes a method which combines the fuzzy controller with sliding mode variable structure controller, utilizes fuzzy control rules to adjust the sliding mode reaching law on-line for outer voltage loop so that the robustness of the system can be improved while the vibration on the sliding surface be mini- mized. And the inner loop PI controller is changed to the proportional controller to simplify the system structure. The wavelet analysis and MATLAB simulation of the running data suggest that the three-phase voltage-source PWM rectifier based on fuzzy adaptive sliding mode variable structure system is superior to the conventional PI control system in the dynamic stability and speed tracking ability .

关 键 词：电压型PWM整流器(VSR) 模糊自适应 滑模变结构 小波分析 

分 类 号：TM461[电气工程—电器]