EN
41
3.12 Topographic diagram of the equipment
The diagram summarises the internal structure of the inverter.
The internal circuitry is with double stage conversion and therefore consists of:
• DC/DC input converter (booster)
• DC/AC output inverter
The DC-DC converter and the DC-AC inverter both work at a high switching frequency and are therefore small and relatively light related
to output power.
The input converter is dedicated to multiple PV arrays with a maximum power point tracking (MPPT) function in order to maximize the
energy harvesting from the photovoltaic generator.
This inverter version is without insulation transformer, that it means that it do not have a galvanic insulation between the input and the
output. This allows ultimately an increase in conversion efficiency. The inverter is already equipped with all the protections required for
safe operation and to be in compliance with the norms, even without the insulation transformer.
The operation and the protection management of the inverter is controlled by two independent DSPs (Digital Signal Processors) and a
central microprocessor.
A dedicate microprocessor is used for user communication interfaces.
The connection to the distribution grid is thus kept under control by two independent DSPs, in full compliance with the electric field norms
both for power supply to the systems as well as security.
The operating system carries out the task of communicate with its components in order to carry out data analysis.
In doing all this, it’s guaranteed the optimal operation of the whole assembly and a high performance in all irradiation conditions and it is
always ensured a full compliance with the relevant directives, standards and regulations.
3.12.1 PVS-100/120-TL B2 version Standard and S2 models
IN1
+
-
MPPT 1
(DC/DC)
Bulk caps
Inverter
(DC/AC)
Line
filter
L1,S
L2,S
L3,S
N,S
PE
Current reading
OVP monitoring
DSP
DC/DC
IN2
+
-
MPPT 2
(DC/DC)
IN3
+
-
S2 version
Standard version
Inverter power module
1
2
Wiring box
1
2
Communication board
Q1
Alarm
N.C
N.O
C
µP
+ R
GND
Remote control
Ethernet 1 RJ45
RS485/Modbus
+ T/R
- T/R
GND
MPPT 3
(DC/DC)
MPPT 5
(DC/DC)
MPPT 6
(DC/DC)
IN4
+
-
IN5
+
-
IN6
+
-
MPPT 4
(DC/DC)
L1,S
L2,S
L3,S
PE
L1
L2
L3
N,S
N
µP
control
DC/DC
DC/AC
DSP controller
+ R
GND
Remote control 2
Alarm 2
N.C
N.O
C
AC
switch
RS485/Service
Ethernet 2 RJ45
+ T/R
- T/R
GND
L1,S
L2,S
L3,S
PE
L1
L2
L3
N,S
N
DC/AC
DSP controller
DC/DC
DC/AC
DSP controller
DC/AC
DSP
contr.
Control circuit
DSP
DC/DC
contr.
Wi-Fi
S2 version
IN1(+)
IN1(-)
DC
switch
OVP
monitoring
IN2(+)
IN2(-)
IN1(+)
IN2(+)
IN3(+)
IN1(-)
IN2(-)
IN3(-)
IN4(+)
IN5(+)
IN6(+)
IN4(-)
IN5(-)
IN6(-)
Standard version
IN1(+)
IN1(-)
OVP
monitoring
IN2(+)
IN2(-)
IN1(+)
IN2(+)
IN3(+)
IN1(-)
IN2(-)
IN3(-)
IN4(+)
IN5(+)
IN6(+)
IN4(-)
IN5(-)
IN6(-)
