Installation and Operation Manual
Page 30 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
NOTICE
These modes may be carried out by
configuring the entire device and each
Framework
accordingly.
Taking
in
consideration that the larger system has
330kW of power, there will be three
independent
Frameworks
of
110kW
configured as Master/Slave if
Multi-
Master/Slave
, while there will be 1
“Master” module and 5 “Slave” modules if
1Master/N.Slave
.
This mode requires, however, that the
operation of DC input switches be well
understood.
4.1.4
MPPT (Maximum Power
Point Tracker)
The great advantage in using the PVI-XXX.0
(-TL) is the ability to extract maximum
power from the solar panels, regardless of
environmental conditions.
A photovoltaic panel shows the curves of
current-voltage (I-V in bold) and power-
voltage (P-V) illustrated in Figure 4-8.
An
array,
therefore,
has
the
same
characteristic. The highest point is the
maximum power. This point of the feature
varies continuously depending on the level
of solar radiation hitting the surface of cells.
On days with variable cloudiness,
solar power changes occur very fast
and wide-ranging.
Variations between 100W/m² and
1200 W/m² can be easily detected in
about 2 seconds.
AURORA PVI-XXX.0(-TL) is designed to
extract maximum power from the array it is
connected to, thus it will always work in the
"knee" of the Voltage-Power curve.
Moreover, since the device in question has
fast tracking / settling periods, especially on
variable days it may produce much more
energy than a "slow" inverter.
PVI-XXX.0(-TL)
scans
the
photovoltaic
field
at
each
connection, allowing to discover any
possible multiple power peaks in the
field characteristic. In this way, the
inverter is placed immediately on
the highest peak.
Chapter §6.2
