Installation and Operation Manual
Page 29 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
The block diagram of Figure 4-5 shows the
AURORA PVI-220.0 model with its 4
independent
converters
(Multi-Master
mode).
The block diagram of Figure 4-6 shows the
AURORA PVI-330.0 model with its 6
independent
converters
(Multi-Master
mode).
The Transformer is usually connected to the
inverter output as shown. The customer
must introduce an appropriate protection
magneto-thermal breaker.
We recommend the use of switches
with magnetic shielding of at least
6000A and a nominal current of
480A.
The converters can operate in three
different modes configured in the factory
before delivery and according to customer
requirements:
Multi-Master,
Multi-
Master/Slave and 1Master/N.Slave.
4.1.1
Multi-Master
In Multi-Master mode, each converter is
dedicated to a separate array (the
photovoltaic fields connected to each
module must be isolated from each other).
In this case the maximum power point
tracker (MPPT) is independently controlled.
This means that the arrays can be installed
with different positions and facing different
directions.
Chapter §6.1.1
4.1.2
Multi-Master/Slave
The Multi-Master/Slave mode, where the
Master/Slave
1
Framework controls the
maximum power point tracker (MPPT), is
possible only by properly configuring the DC
input section.
Chapter §6.1.2
In this case, the fields connected to each
Framework have the same polarity.
4.1.3
1Master/N.Slave (Inverter ≥
150kW)
The 1Master/N.Slave mode, where a single
Master controls the maximum power point
tracker (MPPT), is possible only by properly
configuring the DC input section.
Chapter §6.1.3
In this case, the fields connected to the
entire device have the same polarity.
1
For the definition of Framework.
Chapter §5.2.5
