基于重复控制的单相PWM整流器偶次谐波抑制策略  

Even-order Harmonic Suppression Strategy for Single-phase PWM Rectifier Based on Repetitive Control

作　　者：刘俊杰[1] 高曼曼[1] 王月[1] 江威风 LIU Junjie;GAO Manman;WANG Yue;JIANG Weifeng(Electronic Information Engineering College,Shangqiu University,Shangqiu 476113,Henan,China)

机构地区：[1]商丘学院电子信息工程学院,河南商丘476113

出　　处：《电气传动》2017年第2期35-38,共4页Electric Drive

基　　金：河南省商丘市科技攻关计划资助项目(131021)

摘　　要：PWM整流器具有网侧功率因数高和电流畸变小的特点,但实际中电网电压的畸变及死区等多种非线性因素可能导致并网电流畸变甚至含有偶次谐波。将基于内模原理的重复控制器应用到单相PWM整流器的控制中,利用其在谐波频率处高增益的特点提高并网电流质量。推导了单相PWM整流器的平均开关模型,并分别基于经典控制理论和最小增益原理介绍了比例系数和重复控制器的参数整定过程。最后搭建了实验样机验证了该控制策略的有效性。PWM rectifier has the characteristics of low current distortion and high power factor in the grid side,however many nonlinear factors in the practice such as the distorted grid voltage and dead time may produce somedistortion and even-order harmonics in the grid-side current.The repetitive controller(RC)based on internalprinciple was used for controlling single-phase PWM rectifier,and its high gain at the harmonics was used forimproving the quality of the grid-side current.The average switch model of the single-phase PWM rectifier waselicited,and the parameters setting method for proportionality coefficient and repetitive controller was introducedbased on the classical control theory and small-gain theorem respectively.Lastly,a prototype was built and theexperimental results confirm the validity of this strategy.

关 键 词：脉宽调制整流器 内模原理 重复控制 谐波抑制 

分 类 号：TM461[电气工程—电器]