输出本安型准Z源Buck变换器CCM模式小信号建模与控制  

Small Signal Modeling and Control of the Output Intrinsic Safety Quasi-Z-Source Buck Converter in CCM

作　　者：程红[1] 王聪[1] 葛标[1] 朱锦标[1] 

机构地区：[1]中国矿业大学(北京)信息与电气工程系,北京100083

出　　处：《电工技术学报》2013年第3期222-227,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51077125);中央高校基本科研业务费专项资金(2009KJ02;2010YJ03)资助项目

摘　　要：针对一种新型的输出本安型准Z源Buck变换器拓扑,推导了其四阶动态模型,分析了由准Z源网络参数造成的非主导极点变化对整个高阶系统性能的影响。证明了当准Z源网络参数L1、C1远小于常规变换器滤波网络参数LC时,准Z源Buck变换器具有与常规Buck变换器近似相同的开环频率特性,因此可以按常规Buck变换器控制器设计方法完成准Z源Buck变换器控制器设计。论文最后通过实验验证了理论分析的正确性。To a novel output intrinsic safety Quasi-Z-Source（QZS） Buck converter, a 4-order dynamic model is derived. The variance of the non-dominant poles caused by the change of the QZS network parameters and its influence to the high order system performance are analyzed. It is verified that, when the QZS network parameters L1, C1 are much smaller than conventional Buck converter LC filter network parameters, the two kinds converters have the similar open-loop frequency characteristics Therefore, the conventional Buck converter compensator design method can be used directly to design the controller of the QZS Buck Converter. Finally, the experiment results are given which verify the correctness of the above analysis.

关 键 词：本质安全 准Z源 BUCK变换器 小信号建模 控制器设计 

分 类 号：TN624[电子电信—电路与系统]