Single-phase Three-level Rectifier with High Power Factor  

作　　者：蔡政英 

机构地区：[1]School of Management,Huazhong University of Science and Technology

出　　处：《Defence Technology（防务技术）》2008年第2期128-135,共8页Defence Technology

基　　金：National Nature Science Foundation of China(50277017)

摘　　要：Based on a neutral point diode clamped eight-switch configuration, a general mathematical model of single phase bi-directional three-level (TL) rectifiers is built by proposing two equivalent TL arms for topology derivation. A series of TL rectifiers are derived by using double TL and multi TL methods, and their characteristics are compared at the same time. A novel seven-switch double TL rectifier is constructed, and its operational principle and control algorithm are illustrated as well. Lastly, its waveform and harmonic spectrum are compared to those of multi TL rectifiers, and the adopted rectifier gains better performance and unit PF.Based on a neutral point diode clamped eight-switch configuration, a general mathematical model of single phase hi-directional three-level （TL） rectifiers is built by proposing two equivalent TL arms for topology derivation. A series of TL rectifiers are derived by using double TL and multi TL methods, and their characteristics are compared at the same time. A novel seven-switch double TL rectifier is constructed, and its operational principle and control algorithm are illustrated as well. Lastly, its waveform and harmonic spectrum are compared to those of multi TL rectifiers, and the adopted rectifier gains better performance and unit PF.

关 键 词：电机工程 功率因数修正 PWM整流器 普通数字模式 

分 类 号：TM744[电气工程—电力系统及自动化]