不平衡电网电压下VIENNA整流器的多目标控制  

Multi-Objective Control of VIENNA Rectifier Under Unbalanced Grid Voltage

作　　者：周静超 王君瑞[1] 代丽 王闯 ZHOU Jingchao;WANG Junrui;DAI Li;WANG Chuang(School of Electrical Information Engineering,North Minzu University,Yinchuan Ningxia 750021,China)

机构地区：[1]北方民族大学电气信息工程学院,宁夏银川750021

出　　处：《电子器件》2022年第2期381-387,共7页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(52167004);宁夏自然科学基金项目(2019AAC03123);宁夏电力电子技术研究创新团队项;北方民族大学研究生创新项目

摘　　要：建立了VIENNA整流器在不平衡电网下的数学模型,采用滑模控制器(Sliding mode controller,SMC)对正负序电流内环进行控制,并分别针对不同的运行要求,研究VIENNA整流器在不平衡电网下的三个控制目标:抑制负序电流、抑制有功功率二倍频分量、抑制无功功率二倍频分量。最后搭建系统仿真模型,证明VIENNA整流器在电网不平衡状态下基于SMC正负序电流内环控制策略对各个控制目标与相应控制策略的有效性。A mathematical model of the VIENNA rectifier in an unbalanced power grid is established,and a sliding mode controller(SMC)is used to control the positive and negative sequence current inner loops.According to different operating requirements,the VIENNA rectifier is studied in the unbalanced power grid,i.e.,three control objectives of suppression of negative sequence current,suppression of double frequency component of active power,and suppression of double frequency component of reactive power.Finally,a system simulation model was built to prove the effectiveness of the VIENNA rectifier based on the SMC positive and negative sequence current inner loop control strategy for each control target and corresponding control strategy under the unbalanced state of the power grid.

关 键 词：VIENNA整流器 不平衡电网 滑模控制 正负序双电流环控制 

分 类 号：TM461[电气工程—电器]