Technical data

 Type of string inverter: dual stage insulated with high-frequency transformer
conversion
Inverter
IGBT "H" bridge
Filter
network
Relay interface
network
Filter
EMI / EMC
varistors
AC network
L
N
Filter
EMI / EMC
Varistors
Input
DC
+
_
Inverter with "high-frequency" transformer
 The presence of the "push-pull" DC / DC stage with a high-frequency transformer allows for galvanic
isolation with much more contained dimensions and weight than the conventional solution with a 50 Hz
transformer.
 The stage of galvanic isolation provides a DC / DC conversion, therefore in order to continuously release
components into the network this type of inverter must meet the same requirements and protections as
transformerless inverters.
 High-frequency isolation is adopted mainly as a "step-up" function
uP (supervisor)R-iso
DC / DC stage
Galvanic. Isol.
The static conversion system of energy