Installation and Operation Manual
Page 31 of 156
[PVI-XXX.0-YY(-TL) - Rev:1.0]
Figure 4-8: Example of I-V curves (Current-
Voltage) and P-V (Power-Voltage) of a solar
panel
Unlike other inverters, PVI-XXX.0(-
TL) follows very fast variations in
illumination, allowing the MPPT
system to follow the light practically
in real time.
4.1.5
Special features
Due to the high efficiency of AURORA and
the system of heat dissipation amply sized,
this inverter ensures operation at maximum
power over a wide ambient temperature
range.
Chapter §21
The inverter is controlled in each module by
a DSP (Digital Signal Processor) and by a
central microprocessor. This means that the
failure of a module does not compromise
the whole system but only the loss of up to
55kWp. This applies in a Multi-Master
system, while in a Multi-Master/Slave
system, in case of failure of the Master,
undetectable by the Slave module, the
system loses 110kWp, while in case of
failure of Master detected by the Slave
module it loses up to 55kWp.
The dialogue between DSP and the
Microprocessor occurs via a CAN BUS
communication. The same protocol is used
for dialogue between modules belonging to
the same system but with different
Frameworks. This guarantees optimum
operation of the entire device and a high
performance in all insulation and load
conditions, always in full compliance with its
relative
guidelines,
standards
and
regulations.
For the communication of the system with
the
exterior,
the
inverter
has
two
independent RS485 serial ports: a channel
for user communication and a dedicated
channel for the PVI-STRINGCOMB string
combiners.
Chapter §8
