基于LESO的MMC-RPC反馈线性化直接功率控制  

Feedback linearization direct power control of MMC-RPC based on linear extended state observer

作　　者：宋平岗 陈怡 连加巍 SONG Ping-gangy;CHEN Yi;LIAN Jia-wei(College of Electrical and Electronic Engineering,East China Jiaotong University,Nanchang Jiangxi 330013,China)

机构地区：[1]华东交通大学电气与自动化工程学院,江西南昌330013

出　　处：《控制理论与应用》2024年第1期109-117,共9页Control Theory & Applications

基　　金：国家自然科学基金项目(51367008)资助.

摘　　要：模块化多电平铁路功率调节器作为一个耦合的多变量非线性系统,传统PI控制的直接功率控制难以实现对系统的精确解耦.本文提出了一种基于线性扩张状态观测器的反馈线性化直接功率控制方法,根据Lie导数构建了模块化多电平铁路功率调节器(MMC-RPC)两输入/两输出功率仿射模型,设计了精确反馈线性化功率解耦控制器.针对不确定因素等扰动对精确反馈线性化控制效果的影响,设计了线性扩张状态观测器对扰动进行观测和补偿,实现了功率的精确跟踪控制.最后,通过MATLAB/Simulink平台搭建仿真模型对所提控制方法进行了验证.Modular multilevel converter-railway static power conditioner(MMC-RPC)is a coupled multi-variable nonlinear system,and the traditional direct power control method of PI control is difficult to achieve precise decoupling of the system control.In this paper,a feedback linearized direct power control method based on linear extended state observer is proposed.According to the Lie derivative,the MMC-RPC two-input/two-output power affine model is constructed,and an accurate feedback linearized power decoupling controller is designed.Aiming at the influence of uncertain factors and other disturbances on the effect of precise feedback linearization control,a linear expansion state observer is designed to observe and compensate the disturbances,and to achieve precise power tracking control.Finally,the proposed control method is validated by building a simulation model on the MATLAB/Simulink platform.

关 键 词：模块化多电平铁路功率调节器 反馈线性化 线性扩张状态观测器 直接功率 

分 类 号：U223[交通运输工程—道路与铁道工程]