Simple control strategy for a PV-battery system

The Journal of Engineering

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[1] Department of Electronics, Information and Bioengineering, Politecnico di Milano, Italy;

关键词: photovoltaic power systems;    DC-AC power convertors;    energy storage;    power grids;    secondary cells;    DC-DC power convertors;    dc–dc converter;    PV panel;    dc–ac converter;    ac grid;    battery pack;    dc coupled ac;    dedicated converter;    direct connection;    dc-link;    simple control strategy;    PV-battery system;    energy storage systems;    lithium-ion technology;    promising solutions;    photovoltaic plants;    correct sizing;    maximise;    PV plants;   

DOI  :  10.1049/joe.2018.9269

来源: publisher

【 摘 要 】

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.

【 授权许可】

CC BY