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Volume 2017, Article ID 4143901, 11 pages
Research Article

On Control of a Boost DC-DC Power Converter under Constrained Input

Instituto Politécnico Nacional-CITEDI, Ave. Instituto Politécnico Nacional 1310, Nueva Tijuana, 22435 Tijuana, BC, Mexico

Correspondence should be addressed to Javier Moreno-Valenzuela; xm.idetic@onerom

Received 30 July 2016; Revised 14 November 2016; Accepted 6 December 2016; Published 15 January 2017

Academic Editor: Alfred Hubler

Copyright © 2017 Javier Moreno-Valenzuela and Octavio García-Alarcón. 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.


In this paper, a new controller for a boost DC-DC (direct current to direct current) power converter is proposed. The discussed DC-DC boost converter model considers the losses coming from the inductor and capacitor. The novel control scheme takes into account that the duty cycle is constrained to physically admissible values. The analysis of the closed-loop trajectories provides the conclusion that output voltage regulation is achieved in asymptotic form. In addition, the problem of uncertain supply voltage and unmeasurable inductor current is also addressed by using an observer together with the proposed control law. Our theoretical results are supported by using numerical simulations and experimental tests. Comparisons with respect to known approaches are presented.