超级电容负载的耦合并联充电系统无源分布式协同控制  

Passivity-based distributed cooperative control for coupled parallel charging systems with super-capacitor loads

作　　者：刘建刚 杨胜杰 LIU Jian-gang;YANG Sheng-jie(School of Science,Hunan University of Technology and Business,Changsha Hunan 410205,China;Key Laboratory of Hunan Province for Statistical Learning and Intelligent Computation,Changsha Hunan 410205,China)

机构地区：[1]湖南工商大学理学院,湖南长沙410205 [2]统计学习与智能计算湖南省重点实验室,湖南长沙410205

出　　处：《控制理论与应用》2021年第6期815-822,共8页Control Theory & Applications

基　　金：国家自然科学基金项目(11601145);湖南省教育厅科研项目(18A309,19C1037,20C0520)资助。

摘　　要：储能式轻轨车辆采用超级电容作为动力源,其并联充电系统每个充电机不可避免的存在着线路不对称、元器件老化及工艺误差等因素,使得输出电流不均衡.本文将并联充电系统的电流均衡问题抽象成一类非线性耦合动态互联系统的输出同步问题,结合系统的无源性,根据最近邻原则,借助饱和函数,设计了保证控制输入有界的输出同步控制器.利用子系统存储函数构造李雅谱诺夫函数,在系统满足无源性、通信拓扑满足细致平衡条件的情况下,借助Barbalat等相关引理证明了整个闭环系统的稳定性.将提出的无源性协同控制方法运用到了具有超级电容负载的并联充电系统控制实例中,借助仿真验证了本文提出的无源性协同控制方法的有效性.Because there exist manufacture errors inevitably and the line connection of the circuit can not be guaranteed to be completely symmetrical,the output currents of the parallel charging system for energy storage type light rail vehicles with super-capacitors as its power-supply are not balanced.In this paper,the current-sharing problem of parallel charging systems is abstracted into the output synchronization problem of one class nonlinear coupled inter-connected dynamical systems.The out synchronization controller is designed based on the nearest neighborhood rule by adopting a saturation function,considering the passivity for such systems.The closed-loop system stability is rigorously proved with the aid of Lyapunov function based on storage functions of sub-systems integrating with Barbalat lemmas,which is assumed that the system passivity condition and the communication topology details balanced condition are both satisfied.The passivity-based distributed cooperative control is applied in the parallel charging systems with super-capacitor loads.The effectiveness and applicability of the proposed methods is verified by simulations.

关 键 词：耦合动态互联系统 均流 分布式 协同控制 无源 存储函数 

分 类 号：U270.381[机械工程—车辆工程] TM53[交通运输工程—载运工具运用工程]