Deadbeat and Repetitive Control for Grid-connected Three-phase Four-leg Inverters

被引：0
|
作者：
Tan C. [1 ,2 ]
Chen Q. [1 ]
Zhang L. [1 ]
Zhou K. [1 ]
机构：
[1] School of Automation, Wuhan University of Technology, Wuhan
[2] School of Physics and Information Engineering, Jianghan University, Wuhan
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2018年 / 42卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Deadbeat control; Internal model principle (IMP); Steady-state performance; Three-phase four-leg inverter;
D O I：
10.7500/AEPS20171207006
中图分类号：
学科分类号：
摘要：
A combined control scheme of improved deadbeat control and plug-in repetitive control is proposed for grid-connected three-phase four-leg inverters to control the grid-connected current. The deadbeat current control can quickly and accurately track a given signal, and the repetitive control based on the internal model principle can quickly eliminate the steady-state error in each cycle by providing high gain at the fundamental frequency and its integral multiples. Based on the mathematical model of grid-connected voltage-type three-phase four-leg inverter, the deadbeat control algorithm is derived, and the effect of control delay in the deadbeat control on the stability of the system is analyzed. The plug-in repetitive controller is able to reduce the sensitivity of the deadbeat control to the inductance parameters and the dependence on the model accuracy. Thus, the periodic steady-state error can be eliminated. The optimal compensation step is obtained by analyzing the transfer function of the model. Finally, the simulation and experimental results show that the proposed control strategy can achieve fast and accurate tracking of the reference current. © 2018 Automation of Electric Power Systems Press.
引用
收藏
页码：142 / 148
页数：6
相关论文
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