PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations
Version 1
: Received: 5 April 2024 / Approved: 5 April 2024 / Online: 5 April 2024 (10:25:04 CEST)
How to cite:
Saavedra, A.C.M.; Barra Junior, W.; Medeiros, R.L.P.D.; Junior, C.R.; Gomes, A.S. Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations. Preprints2024, 2024040433. https://doi.org/10.20944/preprints202404.0433.v1
Saavedra, A.C.M.; Barra Junior, W.; Medeiros, R.L.P.D.; Junior, C.R.; Gomes, A.S. Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations. Preprints 2024, 2024040433. https://doi.org/10.20944/preprints202404.0433.v1
Saavedra, A.C.M.; Barra Junior, W.; Medeiros, R.L.P.D.; Junior, C.R.; Gomes, A.S. Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations. Preprints2024, 2024040433. https://doi.org/10.20944/preprints202404.0433.v1
APA Style
Saavedra, A.C.M., Barra Junior, W., Medeiros, R.L.P.D., Junior, C.R., & Gomes, A.S. (2024). Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations. Preprints. https://doi.org/10.20944/preprints202404.0433.v1
Chicago/Turabian Style
Saavedra, A.C.M., Carlos Roozembergh Junior and Alan Sovano Gomes. 2024 "Experimental Evaluation of the Robust Controllers Applied on a Single Inductor Multiple Output DC-DC Buck Converter to Minimize Cross Regulation Considering Parametric Uncertainties and CPL Power Variations" Preprints. https://doi.org/10.20944/preprints202404.0433.v1
Abstract
This paper presents two control design strategies for voltage regulation in a single inductor dual output (SIDO) DC-DC Buck converter system. Based on a nominal multiple input multiple output (MIMO) plant model and performance requirements, both an LQR and a decoupled PI control laws are designed to control the power converter system, under parametric uncertainties such as voltage source variation, CPL power variation, and load resistance variation. Therefore, the SIDO converter can cascade operating, which may cause the undesired effects of voltage oscillation and reduce the system's stability margin. The control performance was assessed under both uncertainties resistive loading and power variation of a constant power load (CPL). A SIDO DC-DC Buck converter board has been developed for experimental tests. The experimental results show that the LQR strategy, compared to the PI strategy, presented a robust performance in the presence of parametric uncertainties in the resistive loads being, however, sensitive to uncertainties due to the presence of CPL loads.
Keywords
Single inductor dual output DC-DC converter; parametric uncertainties; constant power load (CPL); linear quadratic regulator (LQR); integral square error; integral square control
Subject
Engineering, Control and Systems Engineering
Copyright:
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.
