滞后臂并联辅助网络的新型ZVS全桥变换器  

A Novel ZVS Full Bridge Converter With Auxiliary Network in Parallel With the Lagging Leg

作　　者：陈仲[1] 陈淼[1] 罗颖鹏[1] 史良辰[1] 

机构地区：[1]航空电源航空科技重点实验室(南京航空航天大学),江苏省南京市210016

出　　处：《中国电机工程学报》2011年第21期56-61,共6页Proceedings of the CSEE

摘　　要：提出一种新颖的零电压开关(zero-voltage-switching,ZVS)全桥变换器。通过在滞后臂并联无源辅助支路提供软开关辅助电流,该变换器可以在宽负载范围实现滞后管的ZVS。辅助网络结构简单,既不影响变换器的主功率传输,而且无源辅助支路产生的能量可以随着负载的变化而自适应的变化。详细分析该变换器的工作原理及无源辅助支路的作用机理,并对电路关键参数进行设计。在此基础上,设计完成一台1 kW(28 V/35 A)、开关频率为100 kHz的原理样机,实验结果验证了该种拓扑的优点。A novel zero-voltage-switching （ZVS） full-bridge converter was proposed. With auxiliary circuit in parallel with the lagging leg, this converter can achieve ZVS for all primary switches in a wide load range. The auxiliary circuit has no effect on the main power transferring path and the energy stored in the auxiliary circuit is adaptive to the load current. The operation principle of the circuit was demonstrated, and the steady analysis was performed. Based on the analysis, a criterion for optimal design was given. Finally, the exper/mental results from a I kW （28 V/35 A） prototype were presented to confirm the operation, validity, and features of the proposed converter.

关 键 词：辅助网络 全桥变换器 移相控制 零电压开关 

分 类 号：TM46[电气工程—电器]