摘要
通过降阶处理,建立了I^2控制Buck变换器的一阶离散映射迭代模型,研究了该模型的非线性动力学行为。通过分析检测电阻Rs和误差放大器比例系数k1为变量参数的分岔图,研究了系统从稳定周期1进入倍周分岔,从连续导电模式(CCM)鲁棒混沌进入断续导电模式(DCM)阵发混沌的动力学形为。通过Rs-Vo和k1-Vo参数空间分析和离散迭代映射空间分析,得到了稳定性和工作模式的变化情况,验证了理论分析的正确性。
After dimension reduction, the 12 controlled buck converter is studied and its one-dimensional discrete iterative map model is established in this paper. Based on the model, the nonlinear dynamic characteristics of the 12 controlled buck converter is studied. Through the bifurcation analysis with the variations sensing resistance Rs and proportional coefficient kl of error amplifier, the operation states from the stable period-1 to the period-double bifurcation and from the robust chaos in continuous conduction mode （CCM） to the intermittent chaos in discontinuous conduction mode （DCM） are studied. Through analysis of Rs-Vo and kl-Vo parameter spaces and discrete-time iterative mappings, the stability and operation mode transitions can be studied, the correctness of the theoretical analysis can be verified.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2016年第3期387-392,共6页
Journal of University of Electronic Science and Technology of China
基金
国家自然科学基金(51177140)
