摘要
深入分析研究了有源箝位正激变换器的稳态工作原理 ,获得了功率开关实现零电压ZVS开通的方法与边界条件。采用状态空间平均法 ,建立了变换器平均模型与小信号模型来预测有源箝位支路对有源箝位正激变换器小信号特性的影响 ,并提出了改善变换器动态特性的方法。给出了变换器原理试验结果和变换器小信号特性PSPICE仿真波形。
The steady principle of active clamp forward converters is deeply investigated.The method and boundary condition of ZVS for active clamp forward converters power switch are given.The converters average model and small signal model by using the state-space averaging approach are presented,in order to predict effects of the active clamp circuit on the small signal properties of active clamp forward converters.A way of improving the converters dynamic properties is proposed.The schematic test results and PSPICE simulation waveforms of small signal properties are given.
出处
《电工技术学报》
EI
CSCD
北大核心
2000年第4期40-46,13,共8页
Transactions of China Electrotechnical Society
基金
航空基础科学基金
江苏省博士后科学基金
关键词
正激变换器
有源箝位
稳态分析
小信号特性
Forward converters Active clamp Steady analysis Small signal property
