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versão impressa ISSN 0121-750X


RAMOS-PAJA, Carlos Andrés; SERNA-GARCES, Sergio Ignacio  e  GONZALEZ-MONTOYA, Daniel. Power Conversion System for Hybrid Battery-Capacitor Storage. ing. [online]. 2020, vol.25, n.2, pp.194-211. ISSN 0121-750X.


Due to the low emissions of CO2 generated by electric systems, those solutions have been receiving attention from industries and academia. However, the electrical storage systems required for a large amount of applications must have high energy and power densities.


To meet those requirements, this paper proposes an active hybrid energy storage system formed by a battery, i.e. a device with a high energy density, and a capacitor, i.e. a device with a high power capability. The proposed solution also protects the battery by limiting the current derivative.


Two sliding-mode controllers are designed to regulate both the battery current and the load voltage. The design process guarantees global stability and safe battery operation.


The controller avoids battery degradation caused by the high-frequency current components since the capacitor assumes those components as demanded by the load profile.

Palavras-chave : Battery; Boost converter; Buck converter; capacitor; hybrid electric storage system; slidingmode controller..

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