VIENNA整流器过零补偿和中点电位平衡策略  

A Zero-crossing Compensation and Neutral Voltage Balance Strategy for VIENNA Rectifier

作　　者：史明明 尹思浩 张宸宇 陈杰 SHI Ming-ming;YIN Si-hao;ZHANG Chen-yu;CHEN Jie(Power Science Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,江苏南京211103 [2]南京航空航天大学,自动化学院,电气工程系,江苏南京211100

出　　处：《电力电子技术》2021年第9期6-10,19,共6页Power Electronics

摘　　要：三相VIENNA整流器由于其结构简单,可靠性高,广泛运用于各个领域,其控制方法主要有空间矢量调制(SVM)和载波脉宽调制(CBPWM),CBPWM方法理论上等效于SVM。为了减小开关损耗,采用载波断续脉宽调制(CB-DPWM)的方法,同时会带来调制波持续过零的问题。为了改善输入电流过零畸变现象,采用过零补偿策略。采用零序分量注入的方法,使得CB-DPWM方法具有中点电位平衡能力。通过仿真与实验验证了过零补偿和零序分量注入方法的可行性。Three-phase VIENNA rectifier is widely used in various fields for its simple structure and high reliability.Its control methods mainly include space vector modulation(SVM) and carrier-based pulse width modulation(CBPWM).CBPWM is theoretically equivalent to SVM.In order to reduce switching loss,the method of carrier-based discontinuous pulse width modulation(CB-DPWM) is adopted,which will bring the problem of modulation wave continuously passing zero.Current zero-crossing distortion can be suppressed by zero-crossing compensation strategy.The zero sequence component injection method is used to make the CB-DPWM method have the potential balance ability.The feasibility of zero-crossing compensation and zero-sequence component injection is verified by simulation and experiment.

关 键 词：整流器 载波断续脉宽调制 过零补偿 

分 类 号：TM461[电气工程—电器]