一种同步整流有源箝位正激变换器的研究  

Research on a Active-Clamp Forward Converter with Synchronous Rectification

作　　者：孙闯闯 嵇保健 洪峰[3] SUN Chuangchuang;JI Baojian;HONG Feng(College of Electrical Engineering and Control Science,Nanjing TECH University,Nanjing 211816,China;College of Automation,Nanjing University of Science and Technology,Nanjing 210094,China;College of Electronic and Information Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)

机构地区：[1]南京工业大学电气工程与控制科学学院,南京211816 [2]南京理工大学自动化学院,南京210094 [3]南京航空航天大学电子信息工程学院,南京210016

出　　处：《电子器件》2020年第1期88-93,共6页Chinese Journal of Electron Devices

摘　　要：提出一种同步整流有源箝位正激变换器。该变换器是在传统的同步整流有源箝位正激变换器的原边增加一个由箝位电容和电感构成的辅助网络得到。该辅助网络可以使变换器在全负载范围内更容易实现主开关管和辅助开关管的ZVS(Zero-Voltage Switching),副边采用自激式同步整流技术,能进一步提升变换器效率,适用于低压、大电流输出场合。详细分析了变换器的工作原理,搭建了一台8 V/100 W试验样机证明了理论分析的正确性。A synchronous rectifier active clamp forward converter is proposed.A clamping capacitance and inductance auxiliary network is added to the original side of the conventional active clamping forward converter.The auxiliary network makes it easier for the converter to realize ZVS(zero-voltage switching)between the main switching tube and the auxiliary switching tube in a full load range.The working principle of the converter is analyzed in detail,and an 8 V/100 W test prototype is built to prove the correctness of the theoretical analysis.

关 键 词：正激变换器 有源箝位 同步整流 ZVS 

分 类 号：TM13[电气工程—电工理论与新技术]