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3 - Characteristics
T
opographic diagram of the equipment
The diagram summarises the internal structure of the inverter.
The internal circuitry is with double stage conversion and therefore con-
sists of:
- DC/DC input converter (booster)
- DC/AC output inverter
The DC-DC converter and the DC-AC inverter both work at a high
switching frequency and are therefore small and relatively light related
to output power.
The input converter is dedicated to multiple PV arrays with a maximum
power point tracking (MPPT) function in order to maximize the energy
harvesting from the photovoltaic generator.
This inverter version is of the type without transformer, that is without gal-
vanic insulation between the input and the output. This allows ultimately
an increase in conversion efficiency. The inverter is already equipped
with all the protections necessary for safe operation and compliance with
the norms, even without the insulation transformer.
The operation and the protection management of the inverter is control-
led by two independent DSPs (Digital Signal Processors) and a central
microprocessor.
A dedicate microprocessor is used for user communication interfaces.
The connection to the distribution grid is thus kept under control by two
independent DSPs, in full compliance with the electric field norms both
for power supply to the systems as well as security.
The operating system carries out the task of communicating with its com-
ponents in order to carry out data analysis.
In doing all this, we guarantee optimal operation of the whole assembly
and a high performance in all irradiation conditions and always ensuring
full compliance with the relevant directives, standards and regulations.
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