基于采样数据模型的DC-DC变换器中分岔现象分析  

Analysis of Bifurcation Phenomena in DC-DC Converters Based on Sampled-Data Model

作　　者：王新生[1] 王琪[2] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学电气工程系,黑龙江哈尔滨150001 [2]哈尔滨工业大学(威海)控制科学与工程系,山东威海264209

出　　处：《系统仿真学报》2007年第19期4566-4569,共4页Journal of System Simulation

摘　　要：DC-DC变换器中存在着丰富的非线性现象,分岔的出现是DC-DC变换器失稳的表现。为研究DC-DC变换器中的分岔现象,采用采样数据法建立DC-DC变换器的精确数学模型,给出对分岔现象进行仿真分析的公式,以Buck变换器为例,通过仿真和实验观察不同参数下分岔现象的出现,从而得出电路参数变化对DC-DC变换器稳定性的影响。There are kinds of nonlinear phenomena in DC-DC converters, and the appearance of bifurcation implies that the DC-DC converter is unstable. To study the bifurcation phenomena, a precise sampled-data model for DC-DC converters was set up in the first step, then formulae for bifurcation simulation were derived, at last, a buck converter was studied as an example. Observing bifurcation phenomena under different circuit parameters in simulation and experiment will help us to determine the stable values.

关 键 词：分岔 DC-DC变换器 采样数据模型 仿真 

分 类 号：TN624[电子电信—电路与系统]