物理学报Issue(12)：1-9,9.DOI:10.7498/aps.63.120507
峰值电流模式控制同步开关Z源变换器的动力学研究
Dynamical study of p eak-current-mo de controlled synchronous switching Z-source converter
摘要
Abstract
Z-source converter can have a high voltage transmission ratio, reduce the losses of switching devices, and improve the efficiency of the system, etc., because of embedding the Z-source network into the system, which makes it find wide applications in DC conversion, inverters, etc. Nonlinear dynamics of the peak-current-mode controlled synchronous switching Z-source converter is studied for the first time so far as we know. The discrete iterated mapping model under continuous current mode is established, while the effects of the reference current on the stability of the system are analyzed by using the trajectories of eigenvalues, and the steady state operation parameter domain is schemed. Period-doubling bifurcation, border-collision bifurcation, tangent bifurcation and intermittent chaos are found in this converter based on the bifurcation diagram and the Lyapunov exponent diagram, and the evolvement and mechanism of the border-collision bifurcation and chaos are analyzed. Finally, the circuit simulation and the experimental results show that the theoretical analysis is correct. Results obtained indicate that with the increase of the reference current, the peak-current-mode controlled synchronous switching Z-source converter goes from period 1 into period 2 and period 4 through the period-doubling bifurcation, and moves into the intermittent chaos due to the border-collision bifurcation. Then the system exhibits a period-3 behaviour because of the tangent bifurcation. Finally, the converter moves into chaos due to the border-collision bifurcation again.关键词
同步开关Z源变换器/离散迭代映射/分岔/混沌Key words
synchronous switching Z-source converter/discrete iterated mapping/bifurcation/chaos引用本文复制引用
向俊杰,毕闯,向勇,张千,王京梅..峰值电流模式控制同步开关Z源变换器的动力学研究[J].物理学报,2014,(12):1-9,9.基金项目
广东省引进创新科研团队项目(批准号:201001D0104713329)和中央高校基本科研业务经费(批准号：ZYGX2013J114)资助的课题.* Project supported by the Guangdong Innovative Research Team Program, China (Grant No.201001D0104713329) and the Fundamental Research Fund for the Central Universities, China (Grant No. ZYGX2013J114) （批准号:201001D0104713329）
