Sma SUNNY BOY User Manual download pdf (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.

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Sma SUNNY BOY User Manual Page 43