Sunny Boy 700
Technical Description
SB700-11:EE
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7
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SMA Regelsysteme GmbH
2 System Description
The need to reduce the CO
²
emission and other pollutants resulting from energy con-
versions is becoming more and more apparent. Renewable energy sources can
make an important contribution to solve this problem. The direct conversion of solar
radiation to electric energy (photovoltaics) will play a substantial role in this essential
matter world-wide.
Supplementary grid feeding includes the conversion of the DC voltage from the PV-
panel to grid compatible AC voltage with so-called “inverters“ and the subsequent
connection to the electricity grid in the house distribution.
Here the electricity from the PV-modules provides all consumers with electric power
(household devices, lights etc.). In case that not enough energy is produced the addi-
tionally necessary energy is obtained from the grid. In case that there is a surplus of
energy, this surplus is fed into the local grid and is therefore available for other con-
sumers. This way every single kilowatt-hour is utilized and the electricity company’s
power plants are relieved. In the most simple case a PV-plant therefore consists of
two basic components: the PV-panel and the inverter.
Fig. 2.1: Grid-tied PV plant