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Page
70
of
76 MICRO-0.25/0.3-I-OUTD-US-208/240 BCG.00612_AB
Part
7 Appendix
7.1.1 B
LOCK
W
IRING
D
IAGRAM
The diagram below summarizes the layout of the MICRO inverter. The main blocks are the DC-DC
input converter (the “boost” section) and the DC-AC output inverter. Both work at a high switching
frequency, are small and relatively light.
The inverter is equipped with a single input converter with Maximum Power Point Tracking
(MPPT) to which it is possible to connect a single photovoltaic module. This means that the
modules connected to the MICRO inverters could be installed in different positions and
orientations. This inverter is equipped with a high-frequency transformer, in other words with
galvanic isolation of the primary (DC side) from the secondary (AC side), while maintaining very
high performance in terms of output and energy export. This type of circuit allows for the
grounding of the positive input pole.
The inverter is controlled by two independent DSPs (Digital Signal Processors) and a central
microprocessor. The connection to the power grid is thus kept under control by two independent
monitors, in full compliance with the electric field norms both for power supply to the systems as
well as security.
The wireless communication system inside the MICRO inverter transmits the information to the
CDD device that analyzes and manages all system data. All this guarantees optimal operation of the
entire unit and high efficiency in all insolation and load conditions, always in full compliance with
the relevant directives, standards and provisions.