具有软开关功能的新型三相谐振极逆变器
Acta Electronica Sinica(2022)
Abstract
为使三相逆变器实现高效率运行,本文提出了具有软开关功能的新型三相谐振极逆变器.当逆变器进入死区状态时,辅助电路将开始谐振,桥臂上将要开通的主开关承受的电压可先变为零,主开关可实现零电压动作,同时辅助开关可实现零电流动作.此外,辅助开关与瞬态电压抑制二极管相连,在电路处于谐振状态时,能避免辅助开关承受过高的高频瞬态电压.本文阐述了电路的工作过程.实验结果证明开关器件处于软切换状态.该电路结构能优化逆变器性能.
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