新型软开关单Buck逆变器  

A Novel Soft-switching Single Buck Inverter

作　　者：王强[1] 

机构地区：[1]辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001

出　　处：《电力电子技术》2011年第10期73-74,110,共3页Power Electronics

摘　　要：为提高逆变器效率和性能,降低电磁干扰(EMI),提出一种新型软开关单Buck型逆变器拓扑结构,通过控制辅助谐振网络的谐振,使其主、辅开关管和大部分二极管实现软开关换流,减小了开关损耗和二极管反向恢复损耗,且电压和电流应力较小。此处对软开关谐振网络的工作原理进行了理论分析和实验研究,得到主、辅开关管驱动和电压、电流波形,重载到轻载下的效率值。实验结果表明,该逆变器平均效率较传统逆变器提高了6%,实现了开关器件的软开关工作,提高了系统的效率。A novel soft-switching single Buck bidirectional inverter is proposed to improve efficiency and reduce electro-magnetic interference（EMI）.Soft commutation of main switching devices, auxiliary switching devices and diodes could be realized via auxiliary resonant network with low voltage and current stress, which reduced switching loss.The principle of soft-switching resonant network is analyzed.Experimeutal research is carried out.Experimental waveforms and efficiency are achieved and analyzed.Experimental results confirm the validity of soft-switching inverter.

关 键 词：逆变器 软开关 谐振 电磁干扰 

分 类 号：TM464[电气工程—电器]