大功率高效率无源谐振软开关Boost DC-DC变换器  

High power and high efficiency soft-switching boost DC-DC converter with a passive resonance

作　　者：汪殿龙[1] 王军[1] 胡云岩[1] 张亮[1] 齐铂金[2] 

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄050018 [2]北京航空航天大学机械工程与自动化学院,北京100083

出　　处：《河北科技大学学报》2009年第4期323-327,共5页Journal of Hebei University of Science and Technology

基　　金：国家863计划项目(2006AA11A145);河北科技大学博士启动基金资助项目(QD200904)

摘　　要：提出了一种新型的无源谐振软开关Boost DC-DC变换器拓扑,并重点分析了该拓扑结构的7个工作模态和工作波形。通过在常规的Boost电路中增加少量L,C,D器件,使主功率开关管和功率二极管工作在谐振软开关状态,提高了效率和可靠性。用软件Pspice对该电路拓扑进行了仿真,并通过实验得到了基于该电路拓扑研制的90 kW DC-DC变换器的主功率器件开关波形。该变换器已经成功地应用在中国第1辆燃料电池城市客车中,各项技术指标均满足使用要求。A novel passive resonance soft-switching boost DC-DC circuit topology is given, and its seven working status and waveforms are particularly analyzed. The main power switch and diode are working in soft-switching, by appending some L,C, D parts in basic boost circuit. The developed converter＇s efficiency and reliability are improved. The circuit is emulated with Pspice software and switch waveform of 90 kW DC-DC converter developed based on the topology is given. The converter is successfully used in the first domestic fuel cell city bus and the technical index is fulfilled.

关 键 词：无源谐振 软开关 燃料电池车 DC—DC变换器 

分 类 号：TM46[电气工程—电器]