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The inverter in the PV system
General The solar inverter is the highly complex link between the solar modules and the public grid.
Tasks The main tasks of the inverter include:
- Converting DC to AC current
- Fully automatic operational management
- Display function and data communication
Converting DC to
AC Current
The inverter transforms the direct current generated by the solar modules into alternating
current. This alternating current is fed into your home system or into the public grid and
synchronized with the voltage that is used there.
Fully automatic
operation man-
agement
The inverter is fully automatic. Starting at sunrise, as soon as the solar modules generate
enough energy, the automatic control unit starts monitoring grid voltage and frequency. As
soon as there is a sufficient level of irradiance, your solar inverter starts feeding energy into
the grid.
The control system of the inverter ensures that the maximum possible power output is
drawn from the solar modules at all times.
This function is called MPPT (Maximum Power Point Tracking).
As dusk starts and there is no longer sufficient energy available to feed power into the grid,
the inverter shuts down the grid connection completely and stops operating. All settings
and recorded data are saved.
Inverter
Main AC
Load
Center
Energy-
meter
PV array
IMPORTANT! The inverter has been designed exclusively for use in grid-connected pho-
tovoltaic systems. It cannot generate electric power independently of the grid.
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