%0 Journal Article
%T BUCK变换器滑模控制研究仿真<br>Research and Simulation of Sliding Mode Control of BUCK Converter
%A 付伟业
%J Modeling and Simulation
%P 430-439
%@ 2324-870X
%D 2025
%I Hans Publishing
%R 10.12677/mos.2025.141040
%X 本文详细讨论了BUCK型降压变换器的滑模变结构控制理论&#65292;推导了描述buck变换器的动力学方程&#65292;并设计了一种滑模控制(SMC)下的buck变换器。当负载和输入电压在一定程度上发生突变时&#65292;该控制器依然能够控制系统使其稳定输出期望电压。此外还提出一种新的方法&#65292;采用双闭环控制&#65292;即一个内环电流控制和一个外环电压控制。电流环采用滑模控制&#65292;电压环采用线性PI控制&#65292;并对这两种控制器在负载阶跃变化和输入电压变化情况下进行对比&#65292;采用Matlab/Simulink进行仿真&#65292;实验结果表明该方法能有效降低Buck变换器的稳态误差&#65292;提高其动态响应以及系统的抗干扰能力&#65292;增强其对负载突变和输入电压波动的鲁棒性。<br>This article provides an in-depth discussion of the sliding mode variable structure control theory for buck converters and derives the dynamic equations that describe the behavior of such converters. A novel sliding mode control (SMC) strategy for buck converters is introduced, specifically designed to maintain stable output voltage despite sudden changes in load and input voltage. Moreover, the paper proposes a dual-loop control approach, comprising an inner current control loop and an outer voltage control loop. The current loop utilizes sliding mode control, while the voltage loop employs linear PI (Proportional-Integral) control. The performance of these two control strategies is compared under conditions of load step changes and input voltage variations. Simulations are conducted using Matlab/ Simulink, demonstrating that the proposed method significantly reduces the steady-state error of the buck converter, enhances its dynamic response, and improves the system&#8217;s immunity to disturbances, thus increasing its robustness against load surges and input voltage fluctuations.
%K 滑模控制器&#65292
%K BUCK转换器&#65292
%K PI调节&#65292
%K 双闭环控制<br>Sliding Mode Controller
%K BUCK Converter
%K PI Regulation
%K Double Closed-Loop Control
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=105096