基于双闭环的单相电压型整流器PFC非线性控制  

Power Factor Correction Nonlinear Control for the Single-phase Voltage Rectifier Based on Dual-loop

作　　者：张珍珍[1] 徐利梅[1] 王玉[1] ZHANG Zhenzhen;XU Limei;WANG Yu(College of Electrical and Information Engineering,Southwest University for Nationalities,Chengdu 610041,Sichuan,China)

机构地区：[1]西南民族大学电气信息工程学院,四川成都610041

出　　处：《电气传动》2017年第5期28-32,共5页Electric Drive

基　　金：西南民族大学中央高校基本科研业务费专项资金(2014NZYQN13);国家民委科技项目(14XNZ019);四川省教育厅2015年度科研计划(15ZB0483)

摘　　要：考虑到整流器的非线性时变特性,首先采用状态空间平均法建立了单相电压型整流器的数学模型。然后,基于李雅普诺夫稳定性理论,设计了双闭环控制系统,其中,通过电流内环控制实现整流器交流侧单位功率因数,电压外环控制率的设计解决了整流器直流侧电压稳定问题。在Matlab/Simulink平台中,搭建单相电压型整流器模型,在电网电压扰动和负载扰动2种情况下,对理论分析结果进行验证。结果表明,直流侧输出电压稳定的同时,网侧电流与电网电压同频同相,实现了两者之间的同步。Taking the nonlinear time?varying characteristics of the rectifier,a mathematical model of the singlephase voltage rectifier was built by using the state-space averaging method.Then,based on the Lyapunov stability theory,the dual?loop controller was designed.The unity power factor of the AC?side was fulfilled by the control of the inner?current loop,and the control law of the outer?voltage loop was designed to achieve the stable of the AC?side voltage.In the Matlab/Simulink,the simulation model of the single?phase voltage rectifier was built to verify the effectiveness of the proposed control method under the disturbance of the grid voltage or the load.The simulation results show that the DC?side voltage is stable,and the grid-side current is sinusoidal and in the same frequency and phase with the AC supply voltage.

关 键 词：状态空间平均法 李雅普诺夫稳定性 电流内环 电压外环 功率因数校正(PFC) 

分 类 号：TM34[电气工程—电机]