Abstract

SANCHEZ-CHOACHI, Sebastián. Passivity-Based Control with an Adaptive Strategy of an Energetic Storage System for a DC Nano Grid. Rev. ing. univ. Medellín [online]. 2019, vol.18, n.35, pp.185-203. ISSN 1692-3324.  https://doi.org/10.22395/rium.v18n35a11.

The growing interest in the development of micro-grids has led to a large number of research projects, in order to improve their performance for further industrialization. For this reason, this paper presents the modeling, control design and simulation results of an energy storage system for a DC nano-grid. This device allows storing energy in the batteries or extract it from them, depending on the load and state of the nano-grid sources. This equipment is built from a nonisolated DC-DC bidirectional converter, for which its model and control strategy based on passivity, accompanied by an adaptive mechanism that estimates some parameters of the system are developed. The simulation results are presented, highlighting the fast response of the system, its robustness facing disturbances and its contribution to the regulation of the DC bus voltage of the nano-grid.

Keywords : Adaptive system; battery chargers; DC-DC power converters; DC nano-grid; emergency power supplies; parameter estimation.

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