电压控制型Buck变换器的混沌抑制策略  

Chaos Curb Strategy for Voltage-Controlled Buck Converter

作　　者：马幼捷[1] 王硕 周雪松[1] 王宇隆 MA You-jie;WANG Shuo;ZHOU Xue-song;WANG Yu-long(School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学电气工程与自动化学院,天津300384

出　　处：《电工电气》2023年第3期1-7,共7页Electrotechnics Electric

基　　金：国家自然科学基金项目(51877152)。

摘　　要：针对降压(Buck)变换器运行过程中所产生的混沌现象,根据变换器的工作特性确立其数学模型,并分析其通往混沌的道路。分别使用了两种控制策略使系统稳定于周期1状态:第一种是设计非线性控制器,施加该控制器后,系统的动态响应快,抗扰性强,但输出电压与参考值有一定的偏差;第二种是基于终端滑模自抗扰控制(TSMADRC)的双闭环控制策略,使用该控制策略后,系统输出超调量小、动态响应快且具有较好的暂态响应,并且从源头上避免了混沌现象的发生。仿真结果表明,两种控制方法均可以抑制混沌现象的发生,使Buck变换器工作于稳定的周期1状态。The chaos phenomenon occurs during the operation of the Buck converter,so the paper,according to the working characteristics of the converter,builds a mathematical model to analyze its pathway to chaos.Then,two control strategies are applied to stabilize the system in the period 1.The first is designing a nonlinear controller which makes the system have fast dynamic response and strong disturbance rejection,but the output voltage is deviated from the reference value.The second is a double-loop control strategy based on Terminal Sliding Mode Auto Disturbance Rejection Control(TSMADRC).It not only makes the system have small output overshoot,fast dynamic response and good transient response,but also avoids the chaos phenomenon from the source.The simulation results show that both control strategies are able to curb the chaos phenomenon to make the Buck converter work stably in the period 1.

关 键 词：BUCK变换器 混沌现象 非线性控制器 终端滑模自抗扰控制 

分 类 号：TM132[电气工程—电工理论与新技术]