Open AccessSimple control strategy for a PV‐battery system
Author(s) -
Barcellona Simone,
De Simone Davide,
Piegari Luigi
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9269
Subject(s) - converters , photovoltaic system , sizing , battery (electricity) , battery pack , electrical engineering , computer science , power (physics) , energy storage , automotive engineering , grid , engineering , voltage , physics , quantum mechanics , art , geometry , mathematics , visual arts
Nowadays, energy storage systems, such as batteries, are spreading in many applications. Among the kinds of batteries, the lithium‐ion technology is one of the most promising solutions. Considering the photovoltaic (PV) plants, it is very important to perform a correct sizing of the battery pack to both maximise the self‐consumption and minimise the total costs. In general, PV plants need a dc–dc converter to maximise the electric power that can be extracted from PV panels and a dc–ac converter to connect them to the ac grid. The battery pack can be connected in three different ways: dc coupled and ac coupled using a dedicated converter or through a direct connection on the dc‐link between the dc–dc and dc–ac converters. In the present study, the last solution, without any dedicated converters, is used and a simple control strategy to both maximise the power extracted from the PV panel and regulate the charging/discharging of the battery is proposed.