Fronius Agilo 75.0 - Manual (Page 20)

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The inverter in a photovoltaic system
General The solar inverter acts as a highly sophisticated link between the solar modules and the
public grid.
Tasks The main tasks of the inverter are as follows:
-
converting DC to AC current
- fully automatic operational management
- display function and data communication
Converting DC to
AC current The inverter converts the direct current created in the solar modules into alternating cur-
rent. This alternating current is fed synchronously with the grid voltage into the in-house
network or the public grid.
Display function
and data commu-
nication The display on the inverter acts as the interface between the inverter and the user. The
display design is oriented towards simple operation and to making the system data avail-
able at all times.
The inverter has a range of basic functions for logging minimum and maximum values on
a daily and total basis. The values are output on the display.
An extensive selection of data communication elements opens up numerous recording and
visualisation options.
System add-on The inverter is able to accommodate a wide variety of system add-ons, such as:
-
a datalogger, to enable a PC to record and manage data from a photovoltaic system
- various large-format displays
- interfaces to transfer system data in a freely accessible format
- devices to combine and monitor solar module strings
The inverter is not designed to be used with optional plug-in cards. System add-ons must
be installed in a separate housing.
IMPORTANT! The inverter has been developed exclusively for use in grid-connected pho-
tovoltaic systems; generating energy independently of the public grid is not possible.