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Title: Nonlinear observer-based control for an active rectifier
Authors: Flota, M
Alvarez-Salas, R
Miranda, H
Cabal-Yepez, E
Romero-Troncoso, R J
Keywords: Active front-end (AFE) rectifier;Nonlinear observer-based controller;Power factor
Issue Date: Dec-2011
Publisher: NISCAIR-CSIR, India
Abstract: In this paper, a nonlinear observer-based controller for a single-phase active front-end (AFE) rectifier is presented to improve power factor with high quality output DC voltage. Proposed algorithm is based on an Luenberger-like observer and a passivity-based controller. Closed-loop stability is demonstrated for all operating ranges using Lyapunov theory. Performance of observer based controller is shown by simulation for voltage sag occurrence and abrupt load changes.
Page(s): 1017-1025
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.70(12) [December 2011]

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