摘要
介绍了一种采用相移变压器的双桥整流器,对这种拓扑结构进行阐述和分析,并且通过对相移变压器的消谐原理进行的推导,得出系统可以四象限运行,并且还具有很高的功率因数的结论。运用SHE-PWM的调制思想,提出了双波段的SHE-PWM的调制方案,得出了具体的计算数据。通过实验研究证明这种拓扑结构以及调制方案对电网的污染很小,具有实用价值。
A dual-bridge rectifier with a phase shifting transformer is introduced, the topology configuration is expounded and analyzed. The principle of harmonic elimination of phase shifting transformer is demonstrated, a conclusion that the system can run in four quadrant operation with a very high power factor is drawn. A modulation scheme with dual-bands SHE-PWM applied the thought of selected harmonic elimination is proposed, and the numerical solution of SHEPWM equations is calculated. Experiment results prove that the topology and modulation method takes on an applicable value with little pollution to power grid.
出处
《电气应用》
北大核心
2005年第9期61-64,103,共5页
Electrotechnical Application
