对电流模式控制Buck-Boost变换器的混沌控制研究  

Research on chaos control of current⁃mode controlled Buck⁃Boost converter

作　　者：王浩宇[1] 董学育 朱建忠[1] WANG Haoyu;DONG Xueyu;ZHU Jianzhong(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167

出　　处：《电子设计工程》2021年第23期123-127,共5页Electronic Design Engineering

基　　金：江苏省研究生科研与实践创新计划项目(SJCX20_0720);南京工程学院大学生科技创新基金项目(TB202017018)。

摘　　要：基于电流模式控制的Buck-Boost变换器的工作原理,在MATLAB/Simulink仿真环境下搭建了其状态方程模型,当变换器工作于电感电流连续模式时,分别以输入电压与参考电流作为变量参数进行仿真分析,观察到变换器在电路参数变化时会由周期状态逐步进入不稳定的混沌态;为了改善混沌态对器件工作性能的影响,提出延迟微分反馈控制策略,仿真结果表明,该控制策略可以将变换器有效控制在稳定的各周期轨道上。Based on the working principle of the current-mode controlled Buck-Boost converter,the state equation model is built in the MATLAB/Simulink simulation environment.When the converter works in the inductor current continuous mode,the input voltage and the reference current are used as variable parameters,simulation analysis shows that the converter will gradually enter an unstable chaotic state from a periodic state when the circuit parameters change;in order to improve the influence of the chaotic state on the performance of the device,a delayed differential feedback control strategy is proposed.The simulation results show that this control strategy can effectively control the converter on each stable periodic track.

关 键 词：BUCK-BOOST变换器 混沌态 延迟微分反馈 周期轨道 

分 类 号：TN710[电子电信—电路与系统]