Working Process - PrimeVOLT PV 2KTL-S1/G2P User Manual

2 Product Introduction 2 Product Introduction
2.4

Working Process

2.4.1 Basic principle Description
The 4K-6K PV Inverter with Dual MPPT Input receives inputs from two strings of PV panel, shown as
Figure 2.9 (2K-3.6K PV Inverter with Single MPPT Input receives input from only one string of PV panel,
shown as Figure 2.8). Then the inputs are grouped into two independent MPPT routes inside the inverter to
track the maximum power point of the PV panel. The two MPPT power is then converted into DC Bus,
then the DC power is converted to AC power through an inverter circuit. Finally the AC power is fed to the
Power grid. EMI filer is used on both the DC and AC sides to reduce the electromagnetic inference; Surge
protection is supported on AC side.
2.4.2 Circuit Diagrams
Figure 2.8 shows the circuit diagram for the 2K-3.6K PV Inverter with Single MPPT Input:
PV DC
Switch
Figure 2.8 shows the circuit diagram for the 4K-6K PV Inverter with Dual MPPT Input:
PV DC
Switch
DC
MPPT
EMI
Filter Route
1
Figure 2.8 circuit diagram
DC
MPPT
EMI
Route1
Filter
1
DC
MPPT
EMI
Filter
Route2
2
Figure 2.9 circuit diagram
Relay
Relay
07
L
N
PE
L
N
PE