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3
Product Description
3.1 Product Introduction
In large and medium-sized utility power plant systems, the MV grid-connected inverter,
which contains multiple PV inverter units, transformers, and other equipment, provides a
sound solution to convert the DC power generated by PV arrays into AC power, and feed it
into the grid.
DC AC
No. Name
Description
A
PV array
Monocrystalline silicon, polycrystalline silicon, and thin
film without grounding.
B PV combiner box
Combine the current of multiple PV strings and output.
C
MV grid-connected
inverter
Include inverter units that convert the DC power from
the PV arrays into AC power.
Include a transformer that converts the low-voltage AC
power output by inverter units into medium-voltage AC
power.
D Grid
-
3.2 Product Composition
SG4400UD-MV—US is taken as an example to introduce main devices inside the MV grid-
connected inverter. The product consists of 4 inverter units.