磁集成有源箝位正激变换器小信号建模分析  

Small signal modeling of active clamp forward converter with magnetic integration

作　　者：陈为[1] 卢增艺[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电工电能新技术》2011年第2期13-17,39,共6页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金资助项目(50877010);福建省自然科学基金资助项目(2009J01242)

摘　　要：电感和变压器的集成可以有效地减小正激变换器电感电流纹波,提高输出品质。为了对该变换器进行系统研究,论文提出小信号建模分析的一般方法,着重研究控制-输出传递函数的影响参数。研究表明:由于变压器和输出电感绕组耦合,在控制-输出传递函数中额外引入动态极点和动态零点,并且传递函数以输出零纹波为临界条件出现右半平面零点。Integration of transformer and the output inductor can effectively reduce the output current ripple and im-prove the output quality in forward converter.On purpose of the systematic investigation,a general method to build small signal model is proposed.The control to output transfer function of active clamp forward converter with mag-netic integration is emphasized.In terms of the windings＇ coupling between transformer and the output inductor,the dynamic zeroes and poles are additionally introduced.Moreover,the right half plane zero emerges in condition of zero output current ripple.

关 键 词：磁集成 小信号建模 右半平面零点 零纹波 

分 类 号：TM463[电气工程—电器]