EXPERIMENTAL EVALUATION OF ROBUST AND NONROBUST H∞ CONTROLLERS FOR THREE-PHASE GRID-CONNECTED CONVERTERS

被引：0
作者：
Koch, Gustavo G. [1 ]
Pinheiro, Humberto [1 ]
Oliveira, Ricardo C. L. F. [2 ]
Montagner, Vinicius F. [1 ]
机构：
[1] Univ Fed Santa Maria, Santa Maria, RS, Brazil
[2] Univ Estadual Campinas, Campinas, SP, Brazil
来源：
2017 XIV BRAZILIAN POWER ELECTRONICS CONFERENCE (COBEP) | 2017年
关键词：
Grid-connected converters; Robustness; H(infinity)control; Linear matrix inequalities; LCL-FILTERS; DESIGN;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The objective of this paper is to compare the performance of two H-infinity state feedback controllers based on linear matrix inequalities for grid-connected converters with LCL filters. The grid impedance is assumed as an uncertain parameter, belonging to a real interval. An H-infinity controller designed only for a nominal grid impedance condition leads to an unstable closed-loop behavior, while an H-infinity controller designed for the entire set of grid impedances, ensures the closed-loop stability, indicating the importance of providing robustness against parametric uncertainties in this application.
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页数：6
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