Product description
Product description
5
4
2 Product description
2.1 Product applicability
PV Array Inverter Metering Grid
Fig. 2-1
The research, development and manufacture of Song series are integrated
with the most updated techniques and public confirmed safety regulations.
However, improper operation or misuse may still cause injury or loss.
Instruction and information provided in this manual must be followed all the
time.
2.2 Circuit structure
Fig.2-2 shows the internal functional diagram of Song series inverter. After the
PV array input enters the voltage boosting circuit via the filter circuit,the input
DC voltage is boosted and stabilized to BUS value for the full-bride inverter
circuit, and in this process, the MPP tracer in the inverter will ensure the DC
energy generated in the photovoltaic array can be used by the inverter circuit
at maximum and the DC current will be conveyed into the grid.
The joint of the input and output EMC can effectively reduce the interference
between the inverter and outside.CPU1 and CPU2 control the inverter
operation and monitor the operation state, and in any abnormal working
condition, it will protect the inverter and external device and personal safety
according to the reserve program thus extremely improve the stability and
reliability of the system.
Fig.2-2
2.3 Product introduction
Fig.2-3
2.3.1 Electrical connecting part
Tab. 2-1: Description for the electrical connecting part of the inverter
Name
DC+ (1/2)
DC- (1/2)
WiFi/RS485
AC Output
Description
The positive part of terminals connecting the
PV array
The negative part of terminals connecting the
PV array
Communication mode
Connected to the grid
By Song series inverter, the DC voltage generated in the PV array can be
transformed into AC voltage and supplied to the grid. The PV power
generating system consists of PV arrays,inverters, meters and a public
grid.
RS485
WiFi
DC2+
DC1+
DC2-
DC1-
AC Output
EMC
DC+
DC-
EMC
DC+
DC-
PV1
PV2
EMC
L
N
PE
CPU1
CPU2
LCD DISPLAY PANEL
COMMUNICATION INTERFACE
RS485/WiFi
BOOST MPPT2
BOOST MPPT1
FULL BRIDGE INVERTER
GEID-CONNECT RELAY
