一族基于改进型零电流开关单元的PWM变换器  

A Family of PWM Converters Based on Improved ZCS Switch Cell

作　　者：秦岭[1] 谢少军[1] 周晖[2] 

机构地区：[1]南京航空航天大学自动化学院,南京210016 [2]南通大学电气工程学院,南通226007

出　　处：《电工技术学报》2007年第4期92-99,共8页Transactions of China Electrotechnical Society

摘　　要：提出一种改进型ZCS-PWM开关单元。该开关单元能在整个变换范围内实现所有有源开关管的零电流开关(ZCS)和所有无源开关管的零电压开关(ZVS),而且通过无源钳位电路彻底地消除了所有开关管的电压尖峰,并使得所有开关管的电流应力都很小。详细分析了基于该开关单元的Boost变换器,研究结果验证了这种零电流开关技术的可行性,最后得出了基于该开关单元的一族变换器。An improved zero-current-switching （ZCS） PWM switch cell is introduced in the paper It is featured by ZCS of all the active switches, zero-voltage-switching （ZVS） of all the passive semiconductor devices at entire load range, and less current stress and less voltage stress benefiting from the passive clamping circuit. Theoretical analysis and operation principles of a Boost converter based on the switch cell are analyzed in detail. The validity of the proposed ZCS technique is verified by the research results. Then, a novel family of converters using the switch cell is derived.

关 键 词：直-直变换器 脉宽调制 零电流开关 软开关 BOOST变换器 

分 类 号：TM461[电气工程—电器]