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Photovoltaics (abbr.: PV)

TheconversionofPVenergyintoelectricalenergy.

Thenameiscomposedofthecomponentparts:Photos-theGreekwordforlight-andVolta-after

AlessandroVolta,apioneerinelectricalresearch.

Power dissipation

Powerdissipationisdesignatedasthedifferencebetweenabsorbedpowerandpowerofadevice

orprocessyielded.Powerdissipationisreleasedmainlyasheat.

PV cell

PVcellsarelarge-surfacephotodiodeswhichconvertlightenergy(generallysunlight)intoelectrical

energy.Thiscomesaboutbyutilizationofthephotoelectriceffect(photovoltaics).

PV generator

SystemcomprisinganumberofPVmodules.

PV module

PartofaPVgenerator;convertsPVenergyintoelectricalenergy.

RJ45

Abbreviationforstandardizedeight-poleelectricalconnectorconnection.RJstandsforRegistered

Jack(standardizedsocket).

RS485 (EIA485)

Differentialvoltageinterfaceonwhichthegenuinesignalistransmittedononecoreandthene-

gated(ornegative)signalontheothercore.

Separate grid system

Energysupplyequipmentwhichiscompletelyindependentofaninterconnectedgrid.

Solar inverter

isanelectricaldevicewhichconvertsDCdirectvoltageintoACvoltageand/ordirectcurrentinto

alternatingcurrent.

String

DesignatesagroupofelectricalPVmodulesswitchedinseries.

String solar inverter (solar inverter concept)

ThePVgeneratorisdividedupintoindividualstringswhichfeedintothegridovertheirownstring

solarinvertersineachcase.Inthisway,theinstallationisconsiderablyfacilitatedandthegainde-

crease,whichcanarisefromtheinstallationorfromdifferentshadingconditionsofthePVmodules,

isconsiderablyreduced.

TAB (2000)

TheTAB2000arethetechnicalregulationsgoverningconnectiontothelow-voltagegridoperated

bydistributionsystemoperatorsinGermany.TheseTechnischenAnschlussbestimmungenorTAB

forshorthavebeeninforcesincetheyear2000.TheydenetherequirementsimposedbyDSOs

ontheelectricalsystemsoperatedbytheendcustomersofutilitycompanies.

VDE

VerbandderElektrotechnik,ElektronikundInformationstechnike.V.

(AssociationofElectricalEngineering,ElectronicsandInformationTechnology).

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