AUTHOR=Pinto Jorge , Carvalho Adriano , Morais Vitor 

TITLE=Power Sharing in Island Microgrids

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 8 - 2020

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2020.609218

DOI=10.3389/fenrg.2020.609218

ISSN=2296-598X

ABSTRACT=The growth of local renewable energy sources and heavy loads in power distribution networks, such as the increasing electric vehicles charging stations, causes several issues with a direct impact on the stability of the electrical grid. An attempt to overcome such issues is the microgrid concept, with the grid structured into local sub-grids that manage their power and energy balancing. A microgrid may operate connected or disconnected from the main-grid being dynamically necessary to guarantee a power balancing between local loads and sources. Furthermore, as several power units are connected to the same microgrid, it is also required equity in terms of power sharing. Current work explores a scenario of an island operation of a microgrid with multiple sources, including battery storage systems, sharing power with multiple loads including electric vehicle chargers, a scenario appropriated to a city grid. A local control solution for a stable operation of the microgrid in terms of both power balancing and power sharing is presented and validated through numerical and experimental results.