Design and Experimental Implementation of a Robust DLQR for Three-Phase Grid-Connected Converters

被引：0

作者：

Maccari Junior, Luiz Antonio ^{[1
]}

do Amaral Santini, Claudio Luiz ^{[2
]}

Oliveira, Ricardo C. L. F. ^{[3
]}

Montagner, Vinicius Foletto ^{[1
]}

机构：

[1] Fed Univ Santa Maria UFSM, Power Elect & Control Res Grp GEPOC, Santa Maria, RS, Brazil

[2] Fed Univ Rondonia UNIR, Ctr Technol NT, Porto Velho, Rondonia, Brazil

[3] Univ Campinas UNICAMP, Sch Elect & Comp Engn FEEC, Campinas, SP, Brazil

来源：

2014 11TH IEEE/IAS INTERNATIONAL CONFERENCE ON INDUSTRY APPLICATIONS (INDUSCON) | 2014年

关键词：

PWM CONVERTERS; LCL; RECTIFIERS; STABILITY; SYSTEMS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper deals with the design of robust discrete linear quadratic regulators applied to three-phase inverters connected to the grid by means of LCL filters. The system is modeled in the state space in abc coordinates and changed to alpha beta coordinates, allowing a simple control design and implementation. Resonant controllers are used to ensure the tracking of sinusoidal references for grid current. The control gains are computed by means of a convex optimization problem and ensure that the closed-loop system is robustly stable when operating under conditions of uncertain grid inductance. The controller is experimentally validated with a 5.4 kW prototype, showing good results for three-phase grid current control.

引用

页数：6

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