摘要
提出了一种带辅助支路的移相全桥零电压PWM变换器。详细分析了该变换器的工作原理,讨论了电路的参数,进行了软件仿真,并在一台功率为1kW、工作频率为100kHz的通信用开关电源装置上进行了实验验证。仿真和实验结果都证明了增加的辅助电路能够有效地减小变换器副边占空比的丢失,并使滞后桥臂的ZVS范围受到的影响最小。
A phase - shifted full - bridge ZVS PWM converter with auxiliary branch is presented. The operation principle and the circuit parameters of the converter are analyzed in detail. The proposed scheme is verified on the prototype converter, the power and the operating frequency of which are respectively 1 KW and 100 KHz. Simulating and experimental results proved that the duty cycle loss can be effectively reduced and the impact on the ZVS range of the lagging leg switches can be minimized through the function of this auxiliary circuit.
出处
《空军工程大学学报（自然科学版）》
CSCD
2004年第2期72-76,88,共6页
Journal of Air Force Engineering University(Natural Science Edition)
基金
军队科研基金资助项目
关键词
变换器
全桥变换器
零电压开关
软开关
占空比
converter
full-bridge converter
zero-voltage-switching
soft switching
duty cycle
