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A Microcontroller-Based Power Management System for Standalone Microgrids With Hybrid Power Supply

TitleA Microcontroller-Based Power Management System for Standalone Microgrids With Hybrid Power Supply
Publication TypeJournal Article
Year of Publication2012
AuthorsBelvedere, B., M. Bianchi, A. Borghetti, C. A. Nucci, M. Paolone, and A. Peretto
JournalSustainable Energy, IEEE Transactions on
Pagination422 -431
Date Publishedjuly
Keywordsac node feeds electric active, automatic PMS, battery storage system, distributed power generation, dynamic performance, energy sources, FC power scheduling, grid-connected conditions, hybrid power supply, invertors, islanded operating conditions, kilowatt-class proton exchange membrane fuel cell, low voltage ac node, microcontroller-based power management system, microcontrollers, microgrid monitoring, PEMFC, photo- voltaic module emulator, power inverters, power system management, programmable profiles, proton exchange membrane fuel cells, reactive load emulators, standalone microgrids

The paper presents a microcontroller-based power management system (PMS) designed for the online operation of an experimental low voltage microgrid equipped with a battery storage system and two power supplies: a kilowatt (kW)-class proton exchange membrane (PEM) fuel cell (FC) and a photo-voltaic (PV) module emulator, both connected to a low voltage ac node. The connections of the energy sources to the common ac bus make use of power inverters with specific functionalities. The ac node feeds electric active and reactive load emulators able to reproduce programmable profiles. The automatic PMS provides the microgrid monitoring and the FC power scheduling in both grid-connected and islanded operating conditions. The paper describes the structure and functionalities of the PMS as well as a specific experimental investigation aimed at assessing the dynamic performance of the microgrid in islanded conditions.