Boost变换器自激混沌抑制EMI的实验研究  

Experimental Study to EMI Suppression of Current-mode Controlled Boost Converter by Self-excitation-chaos

作　　者：张建军[1] 丘水生[1] 

机构地区：[1]华南理工大学,广东广州510640

出　　处：《电力电子技术》2006年第6期121-123,共3页Power Electronics

基　　金：国家自然科学基金资助项目(60372004);广东省自然科学基金资助项目(20820)~~

摘　　要：提出了基于闭环电流模式Boost变换器的封闭三维离散时间映射,应用该映射得到了电感电流关于输入电压的分叉图和输出电压的负载特性。通过对分叉图的研究,可以选择合适的参数使闭环电流模式Boost变换器工作在混沌状态,即自激混沌。实验结果表明,闭环电流模式Boost变换器自激混沌抑制EMI的效果良好,在实际负载范围内都能自激混沌,且对输出电压的纹波影响较小。A closed three-dimension discrete-time map of current-mode controlled Boost converter is presented in this paper.We obtain the bifurcation diagram of inductor current to input voltage and load-characteristic of output voltage by this map.By researching this bifurcation diagram ,we can make current-mode controlled Boost converter operating in chaos by selecting appropriate parameter.The experiment results demonstrate that current-mode controlled Boost converters in self-excitation-chaos can suppress EMI very well,hardly influence to output voltage ripples, and current-mode controlled Boost converters can operate in self-excitation-chaos in overall load.

关 键 词：变换器 干扰 电磁兼容性/自激混沌 

分 类 号：TM46[电气工程—电器] TM714.3