摘要
分析了电流模式控制Boost变换器的工作原理,详细阐述了该变换器两种不同的工作状态,列出了相应的微分方程,结合二进制逻辑变量,把数字逻辑的概念运用到系统的建模中来,利用Matlab/Simulink分别建立了电流连续模式和电流断续模式的两种模型。实践证明该建模方法仿真速度快,便于进行理论分析,可以推广到类似的开关非线性系统的建模中去。通过理论分析与仿真结果的一致性,证实了该模型的正确性和可行性。最后,还研究了各种参数变化对分叉点的影响,指出这些参数变化对变换器稳定性的影响,为Boost变换器设计提供理论依据。
The operation principle of current mode control Boost converter was analyzed,which elaborated two different work states of the Boost converter,listed in the corresponding differential equations,combined the binary logic variables,applied the concept of digit logic to modeling system,and established current continuous model and current discontinuous model using Matlab/Simulink.Practice proves that the speed of simulation is fast and easy to do theoretical analysis in this method of modeling.It can be extended to the modeling of similar nonlinear systems.The result of theoretical analysis and simulation of the model is the same and it can confirm the model is correct and feasible.At last,the change of these parameters impacting on the bifurcation was studied,the change of these parameters impacting on the stability of the converter was pointed,and the theoretical basis for designing of Boost converter was provided.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2011年第2期409-413,共5页
Journal of System Simulation
基金
国家自然科学基金(6107102361067001)
安徽省优秀青年科技基金(08040106807)
江西省自然科学基金(2008GZS0043)
