System Description; Product Introduction; Internal Structure Of Inverter Unit - Sungrow SG1100UD Series Operation And Maintenance Manual

System Description

3
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.
No. Name
PV array
A
B PV combiner box
MV grid-connected
C
inverter
D Grid
3.2

Internal Structure of Inverter Unit

Open the front door of the inverter unit cabinet to see the DC cabinet, as shown in the left
figure below. Open the back door of the inverter unit cabinet to see the AC cabinet, as
shown in the right figure below.
Description
Monocrystalline silicon, polycrystalline silicon, and thin
film without grounding.
Combine the current of multiple PV strings and output.
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.
-
DC AC
9