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Type: Artigo de periódico
Title: LMI-Based Control for Grid-Connected Converters With LCL Filters Under Uncertain Parameters
Author: Maccari, LA
Massing, JR
Schuch, L
Rech, C
Pinheiro, H
Oliveira, RCLF
Montagner, VF
Abstract: This paper presents a linear matrix inequality-based procedure for the design of state feedback current controllers that are robust to uncertainties on grid inductance for grid-connected converters with LCL filters. The state feedback control law includes the filter state variables, the states of resonant controllers, and considers also the delay from digital control implementation. As the main contribution here, the proposed strategy allows to deal with resonant controllers of arbitrary dimension, and provides results complying with IEEE Standard 1547 requirements. The control synthesis condition takes into account the assignment of the closed-loop eigenvalues in a circular region with radius r, located inside the unit circle, and the control design relies only on the choice of the value of the radius in the interval 0 < r <= 1, providing all the state feedback gains in a simple and efficient procedure.
Subject: Grid-connected converters
LCL filter
linear matrix inequalities (LMIs)
robust control
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/TPEL.2013.2279015
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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