摘要
该文对一种新型单相不对称五电平逆变器进行研究,这种新型逆变器是通过将半桥二极管钳位逆变器和传统两电平半桥逆变器共享同一直流母线而获得的。针对这种新型拓扑结构该文分析了一种方波合成与消谐波三角载波PWM相结合的控制方法,在这种控制方法下,新型逆变器允许开关速度较快的器件和耐压值较高的器件工作在一起。文中将这种逆变器与其它三种单相五电平逆变器进行了比较。最后本文对一个单相五电平不对称逆变器电路进行了实验验证,并给出相关结论。
In this paper, a novel asymmetric 5-level inverter is studied in which a half-bridge diode-clamp inverter and a conventional half-bridge inverter are connected to a common split-capacitor power supply. Analysis of a control technique for the inverter, which incorporates square-wave synthesis in conjunction with Subharmonics PWM method, is included. Under the proposed control technique, the new configuration permits faster devices and high voltage devices operating in synergism. Comparison with three other single-phase 5-level inverters is presented in this paper. In order to verify the proposed approach, a single-phase 5-level asymmetric inverter was constructed and experimental results are provided.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第11期116-120,共5页
Proceedings of the CSEE
基金
国家自然科学基金资助项目(50277017)。 ~~
