Page 12 of 89
(PVI-6000-OUTD-xx-AU Rev:1.0)
2.
DESCRIPTION OF THE SYSTEM
The AURORA inverter is capable of feeding a power grid using the power
generated by photovoltaic panels.
Photovoltaic panels transform the sun-radiated energy into electrical energy in the
form of direct (DC) current (through a photovoltaic field, also known as PV
generator). In order to utilize this energy and feed it back to the distribution grid,
this energy shall be turned into alternating (AC) current. Aurora does this
conversion, also known as DC to AC inversion, in a very efficient way, without
using rotating parts but just static power electronic devices.
When used in parallel with the grid, the alternate current generated by the inverter
is directly fed to the domestic distribution circuit, which is in its turn also
connected to the public power distribution grid.
The solar energy system can thus feed all the connected users, such as lighting
devices, household appliances, etc.
When the photovoltaic system is not generating sufficient energy, the power
required to ensure proper operation of connected users is taken from the public
power grid. While if the produced energy is too much, it is directly fed to the grid,
thus becoming available to other users.
According to national and local standards and regulations the produced energy can
be sold to the grid or credited to the user against future consumption, thus granting
a great saving of money.
2.1.
Key elements of a photovoltaic system: “STRINGS” and “ARRAYS”
The so-called STRINGS technology has been developed in order to reduce the
installation costs of a photovoltaic system as much as possible. These costs are
mainly related to the wiring operations on inverter DC side and the consequent
distribution on the AC side.
A photovoltaic panel is composed of many photovoltaic cells assembled on the
same mount. A STRING is composed of a certain number of panels electrically
connected in series. An ARRAY is composed by one or more strings connected in
parallel.
Larger photovoltaic systems may be implemented by using several arrays
connected to one or more AURORA inverters.
Summary of Contents for AURORA PVI-6000-OUTD-AU Series
Page 16: ...Page 16 of 89 PVI 6000 OUTD xx AU Rev 1 0 Fig 3C Integrated switch and diodes models...
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