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Mathematical Problems in Engineering
Volume 2010 (2010), Article ID 724531, 22 pages
doi:10.1155/2010/724531
Linear Robust Output Regulation in a Class of Switched Power Converters
1Department of Applied Mathematics IV, Technical University of Catalonia, 08800 Vilanova, i la Geltrú, Spain
2Institute of Industrial and Control Engineering, Technical University of Catalonia, 08028 Barcelona, Spain
Received 19 November 2009; Accepted 14 June 2010
Academic Editor: John Burns
Copyright © 2010 Josep M. Olm and Domingo Biel. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This article addresses the robust output regulation problem for a class of nonlinear switched power converters after its linearization by means of a change of the control vector variable. The methodology employs a dynamic state feedback control law and considers parametric uncertainty due to unknown values of resistive loads. Restrictions arising from the fact that the control gains exhibit fixed values are taken into account. The proposed technique is exemplified with the output voltage regulation of a Noninverting Buck-Boost converter and tested through realistic numerical simulations.