DC/DC变换器并联系统混沌现象的控制策略  

A Control Strategy for Chaos of Parallel DC/DC Converter

作　　者：丁烨 葛芦生 吴津庆 张瑞 DING Ye;GE Lusheng;WU Jinqing;ZHANG Rui(School of Electrical and information Engineering,Anhui University of Technology,Maanshan 24303)

机构地区：[1]安徽工业大学电气与信息工程学院,安徽马鞍山243032

出　　处：《常州工学院学报》2018年第3期22-27,共6页Journal of Changzhou Institute of Technology

基　　金：国家自然科学基金项目(51277003)

摘　　要：并联DC/DC变换器的混杂特性很难用传统的建模方法表示,对其混沌现象进行研究和控制很有必要。采用离散时间映射法分析并联DC/DC Buck变换器的动态过程,建立电路系统的简化近似离散映射模型,提出将主从均控制、电压电流双闭环PI控制与延迟反馈控制(TDFC)相结合的并联DC/DC Buck变换器控制策略。通过MATLAB/Simulink仿真和FPGA实验进行验证,结果表明,该方法可以使系统的混沌现象得到有效控制。The hybrid characteristics of parallel DC/DC converter are extremely difficult to express with traditional modeling methods,and a study of such chaos and its control is becoming more and more important.In this paper,the dynamic process of parallel DC/DC Buck converter is analyzed by discrete time mapping method,and the simplified approximate discrete mapping model is established. A control strategy of parallel DC/DC Buck converter is proposed to control the chaos by combining master-slave current sharing control method with double-closed-loop PI control with the delay feedback control. MATLAB/Simulink software and experimental platform based on FPGA are used to verify the effectiveness of the control strategy. The experimental results indicate that TDFC method can effectively control the chaos of system.

关 键 词：并联Buck变换器 混沌 TDFC 离散模型 

分 类 号：TM46[电气工程—电器]