GRID-CONNECTED HYBRID PV SYSTEM WITH BATTERY STORAGE
Photovoltaic systems (PV) are an integrated set of photovoltaic modules with all the necessary
components that are dimensioned to receive solar energy and convert it into electricity that would
be adequately powered by some DC and/or AC consumers. Depending on how they work,
photovoltaic systems can be divided into stand-alone PV systems (off-grid), grid-tied PV systems
connected to the electricity distribution network (on-grid), and hybrid PV systems as a combination
of the previous two systems.
In this paper, we will consider the operation of a hybrid grid-connected PV system with battery
storage which transforms solar energy into electricity and allows the storage of excess generated
electricity in the batteries. Additionally, this system provides, if needed, the excess generated
electricity to be delivered directly to the power grid. The proposed hybrid system could optimize all
three energy sources PV modules, batteries, and power grid, and continuously deliver quality power
to connected consumers. Properly sized and controlled hybrid PV systems significantly increase the
use of so-called green energy from renewable energy sources and increase the independence and
continuous power supply of the consumers.
Keywords: renewable energy sources, PV systems, inverters, batteries, hybrid systems