- 72 -
001053AG
5 - Installation
Channel configuration examples
PV generator characteristics
MPPT configuration
Notes
The photovoltaic generator consists
of strings having a
different
number
of modules in series from each other.
MPPT configuration
has to be INDEPENDENT
A
NECESSARY
condition so that the
three MPPTs can be used in independent
mode is for the photovoltaic generator
connected to each of the inputs to have
a power
lower
than the power limit of the
single input channel
AND
a maximum
current
lower
than the current limit of the
single input channel.
The photovoltaic generator consists
of strings that have
different
installa-
tion conditions from each other.
The photovoltaic generator consists
of strings having the
same
number
of modules in series as each other.
Possibility of choosing
between the configura-
tion with MPPT
as INDEPENDENT or
PARALLEL
A
NECESSARY
condition so that the
three MPPTs can be used in independent
mode is for the photovoltaic generator
connected to each of the inputs to have
a power
lower
than the power limit of the
input channel
AND
a maximum current
lower
than the current limit of the input
channel.
An
ADVISABLE
(*) condition so that
the three MPPTs can be connected in
parallel is for the photovoltaic generator
connected to the three inputs to consist
of strings made by the
same
number of
modules in series and for all the modules
to have the
same
installation conditions.
The photovoltaic generator consists
of strings that have the
same
instal-
lation conditions, that is to say, all
the strings have the
same
inclination
from the horizontal and the
same
orientation to the SOUTH.
The photovoltaic generator con-
nected to each of the inputs has a
power
lower
than the power limit
of the input channel
AND
a current
lower
than the current limit of the
input channel.
(*) This condition is advisable from the point of view of the energy production of the system, not from the
point of view of inverter operation.
The photovoltaic generator consists
of strings having the
same
number
of modules in series as each other.
MPPT configuration
has to be PARALLEL
A
SUFFICIENT
(*) condition so that the
three MPPTs must be used in parallel
mode is for the photovoltaic generator
connected to each of the inputs to have a
power
higher
than the power limit of the
single input channel
OR
a maximum cur-
rent
higher
than the current limit of the
single input channel.
An
ADVISABLE
(**) condition so that
the three MPPTs can be connected in
parallel is for the photovoltaic generator
connected to the three inputs to consist
of strings made by the same number of
modules in series and for all the modules
to have the same installation conditions.
The photovoltaic generator consists
of strings that have the
same
instal-
lation conditions, that is to say, all
the strings have the
same
inclination
from the horizontal and the
same
orientation to the SOUTH.
The photovoltaic generator con-
nected to each of the inputs has a
power
higher
than the power limit
of the input channel
OR
a current
higher
than the current limit of the
input channel.
(*) This condition is sufficient from the point of view of the energy production of the system, not from the point
of view of inverter operation.
(**) This condition is advisable from the point of view of the energy production of the system, not from the
point of view of inverter operation.
