适用于高动态响应场合的五电平DC/DC变换器  

Research on a Novel Five-level DC/DC Converter suited to High Dynamic Response Applications

作　　者：石勇[1] 杨旭[1] 裴云庆[1] 王兆安[1] 

机构地区：[1]西安交通大学,陕西西安710049

出　　处：《电力电子技术》2006年第1期6-8,共3页Power Electronics

基　　金：国家自然科学基金资助项目(50007007)~~

摘　　要：提出了一种可用于高动态响应场合的五电平DC/DC变换器。该电路在飞跨电容三电平电路的基础上通过添加两个双向开关和两个飞跨电容构造中间电平。稳定的飞跨电容电压是电路工作的基础,当电路工作时,飞跨电容的电压可以通过调节与之对应的中间电平的导通时间比来调节。文中分析了该电路的工作模式、电容电压平衡原理。实验结果证明,该电路工作原理正确,可以正常工作。A novel five level DC/DC converter which is suited to high dynamic response applications is proposed. The presented converter utilizes two additional bi-directional switches and two flying capacitors to provide middle electric levels. Stable flying capacitors voltage must be maintained to facilitate the operation of the converter.When the converter is working, the voltage of flying capacitors can be controlled by swapping two switching modes with opposite charging current corresponding to each middle voltage levels.The configuration and operational principles are discussed. Experiments are carried out to validate the operational principles.

关 键 词：变换器/DC/DC变换器 五电平 软开关 

分 类 号：TM46[电气工程—电器]