摘要
在以往理论研究的基础上,对峰值电流型Buck-Boost DC/DC变换器的非线性行为进行了深入的实验研究,搭建了变换器的功率电路及相应的数据采集系统,使用示波器直接显示和数据采集两种方法,获得了表征电路系统非线性动力学特性的Poincaré截面和分岔图,通过这两种研究非线性动力学常借助的手段,对变换器在参数变化过程中出现的边界碰撞分岔现象的动力学行为及演化过程进行了辨识与分析.最后,将实验结果与数值仿真的结果进行了对照,实验图在分岔形状及分岔点上都与数值仿真相一致,验证了该实验研究方法的合理性和可行性.
Based on the previous theoretic analysis, an experimental investigation to the nonlinear phenomenon for Buck-Boost DC/DC converter of peak-current control mode is performed. A corresponding experimental power circuit and the related acquisition system are designed and established, with which the bifurcation diagrams and Poincaré sections describing the nonlinear characteristics of a circuit are obtained. The experimental results are applied to identify and analyze the dynamic behaviors and evolvements of the border collision bifurcation. A comparison with the numerical simulation in the bifurcation shape and point verifies the reasonability and feasibility of the proposed method.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2006年第4期454-458,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50577047)
西安交通大学博士学位论文基金资助项目(DFXJTU2005-08)
