SMA SUNNY BOY - Manual (Page 43)

SMA Solar Technology AG Glossary
User Manual SB_SMC-BEN092840 43
PV module
A collection of solar cells in an enclosure that protects the sensitive cells from mechanical stress and
allows easy installation.
Reactive Power Control
Inverters with Reactive Power Control are inverters capable of utilizing reactive power. By setting a
default value for the displacement factor (cos ϕ) they can feed reactive power to the grid.
SMA Grid Guard
The SMA Grid Guard concept monitors, for instance, the voltage and frequency of the connected AC
grid according to predefined parameters. This serves to prevent the formation of a stand-alone grid
in the event of grid disconnection.
SMA Power Balancer
The SMA Power Balancer is a serial feature of the Sunny Mini Central. The SMA Power Balancer
prevents the formation of an unbalanced load during three-phase grid feeding. To this effect, a group
made up of 3 Sunny Mini Centrals are each connected via a control line to a 3-phase feeding unit.
Solar cell
An electronic component which generates electrical energy when irradiated with sunlight. Since the
voltage produced by a single solar cell is very small (approx. 0.5 V), several solar cells are combined
to form a solar module.
Solar energy
"Sun energy", i.e. energy from sunlight (solar irradiation).
Solar generator
See PV generator
Solar module
See PV module.
Solar power plant
Describes the totality of components required for the exploitation and utilization of solar energy. In
grid-connected systems this includes not only the PV generator, but also the inverter, e.g. Sunny Boy
or Sunny Mini Central.
String
Describes a group of series-connected solar modules.
String fuse
String fuses serve to protect the modules against reverse current.