物理学报Issue(21)：428-436,9.DOI:10.7498/aps.62.218404
V2控制Buck变换器分岔与混沌行为的机理及镇定
Mechanism of instability behaviors and stabilization on V2 controlled buck converter
摘要
Abstract
Along with the variation of the feedback amplify coefficient, V 2 controlled Buck converter exhibits abundant nonlinear dynamical behaviors. By establishing the discrete-time model of the system, this paper has studied the instability phenomena based on the monodromy matrix method. With increasing feedback factor, the analysis indicated that the converter entered from a stable period-one statue into a period-doubling statue. Finally, it showed chaos. Mechanism of the bifurcation generated by the system was fully analyzed based on the monodromy matrix, which showed that as the increase of the feedback coefficient, an eigenvalue of the monodromy matrix went out of the unit circle;this was the reason why the system generated period-doubling bifurcation. Also presented was the sinusoidal voltage compensation method to extend the stability margin based on the monodromy matrix theory, by which the instability behavior was effectively handled. Simulation and experimental results confirmed the analytical method.关键词
V2控制/Buck变换器/分岔/镇定控制Key words
V2 control strategy/buck converter/bifurcation/stabilization control引用本文复制引用
张方樱,杨汝,龙晓莉,谢陈跃,陈虹..V2控制Buck变换器分岔与混沌行为的机理及镇定[J].物理学报,2013,(21):428-436,9.基金项目
国家自然科学基金(批准号:51277035)和广州市对外科技合作专项(批准号:2013J4500029)资助的课题.@@@@Project supported by the National Natural Science Foundation of China (Grant Nos.51277035), and the International Science and Technology Cooper-ation Program of Guangdong Province, China (Grant No.2013J4500029) （批准号:51277035）
