Journal
JOURNAL OF POWER SOURCES
Volume 267, Issue -, Pages 566-575Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.05.061
Keywords
Battery; Supercapacitor; Hybrid energy storage; dc-dc Converter; Robust tracking; Smooth transition
Funding
- National Science Foundation [ECCS-0925269, 1200152]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1200152] Funding Source: National Science Foundation
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This paper considers some control design problems in a power system driven by battery/supercapacitor hybrid energy storage devices. The currents in the battery and the supercapacitor are actively controlled by two bidirectional buck-boost converters. Two control objectives are addressed in this paper: one is to achieve robust tracking of two reference variables, the battery current and the load voltage, the other is to achieve smooth transition of these variables during load switch. Based on the state-space averaged model we newly developed, the control design problems are converted into numerically efficient optimization problems with linear matrix inequality (LMI) constraints. An experimental system is constructed to validate the control design methods. (C) 2014 Elsevier B.V. All rights reserved.
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