并联直流变换器网络控制系统的信号传输时延补偿滑模控制器设计  

Design of signal transmission delay compensation sliding mode controller for parallel DC/DC converter network control system

作　　者：王艳敏[1] 袁世博 张伟琦 杨铭洋 WANG Yanmin;YUAN Shibo;ZHANG Weiqi;YANG Mingyang(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;Institute of Fluid Physics,China Institute of Engineering Physics,Mianyang 612900,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001 [2]中国工程物理研究院流体物理研究所,四川绵阳612900

出　　处：《电机与控制学报》2025年第3期12-28,共17页Electric Machines and Control

基　　金：国家自然科学基金(51307035,62073095);智能建筑与建筑节能省重点实验室基金(IBES2021KF02)。

摘　　要：并联直流变换器的网络控制系统(NCS)受到信号传输时延的影响时会损失理想的输出性能。针对典型的并联Buck变换器,设计离散域内的滑模控制器(SMC)以增强系统的鲁棒性,从而保证变换器的均流输出性能。在此基础上分析了不同类型时延对变换器NCS稳定性能的影响,并得到长/短时延对变换器NCS的实际影响特性。为进一步解决长时延对变换器NCS传输信号的损害问题,基于多步预估法对所设计的SMC控制器进行改进,对系统控制信号进行超前预测并建立缓冲区,从而有效预估与补偿NCS所丢失时延信号进而保证并联Buck变换器的输出性能,同时利用预估误差分析给出改进系统的稳定条件。仿真和实验验证所提方法的优越性,在0.6 ms时延情况,最大误差和上升时间分别减少37.4%、61.3%。The networked control system(NCS)of parallel DC/DC converter is always affected by the signal transmission delay and loses its ideal output performance.For a typical shunt Buck converter,a sliding mode controller(SMC)in discrete domain was designed to enhance the robustness of the system.Based on this,the effects of different types of time delay on the stability of the converter NCS were analyzed,and the actual effects of long/short time delay on the converter NCS were obtained.In order to further solve the problem of damage to NCS transmitted signals by long delay,the SMC controller designed was improved based on multi-step prediction method,so as to effectively predict and compensate the delay signals lost by NCS and ensure the output performance of the shin-parallel Buck converter.Meanwhile,the stability conditions of the improved system were given by using prediction error analysis.Simulation and experiments demonstrate the superiority of the proposed method.At 0.6 ms delay,the maximum error and rise time are reduced by 37.4%and 61.3%,respectively.

关 键 词：并联直流变换器 网络控制系统 多步预估法 传输时延 时延补偿 滑模控制 

分 类 号：TM402[电气工程—电器]