Session 3A - Solar Electricity: Basics and Hands On Demonstration
Design of Solar Power System Demonstration Unit
Transcript of Design of Solar Power System Demonstration Unit
DesignofSolarPowerSystemDemonstrationUnitShurjoMaitraandProf.YoonG.Kim,ElectricalandComputerEngineering,CalvinCollege,Michigan
Abstract Results
References
Faith and Engineering
Theresearchfocusesondevelopingademonstrationunitwhichincludesasolarraysimulator,powerconverters,microprocessor-basedcontrollers,photovoltaiccells,andabattery.Theprocessinvolvesdesigningseveralfunctionblocks,constructingafixture,integratingthepowerelectronicswiththecontroller,testingthesystemandmeasuringavarietyofdata.
Weusedanaluminumblockshapedinahexagonalarraywith30spacestoconstructtheLEDlightsource.LEDmoduleswereassembled,solderedandconnectedtotheDCpowersupply.
Asealed-leadacidbatterysuccessfullystoredanddemonstratedreuseofenergywithabedsidelamp.Fourdigitalmulti-meterswereconnectedtothepanelsandbatterytomeasurethecurrentandvoltageofinputandstorage.
Avariableresistorwasaddedtodemonstratehowtheinputandstoragewouldactundervarioustypesofloads.SPDTswitcheswerealsoaddedtochangefunctionality.
AsChristianswebelievethatourworldbelongstoGodandwearestewardsinit.Asstewardswehavearesponsibilitytotakecareandjudiciouslyusetheresourcesweareblessedwith.Thisprojectfurthersourunderstandingofsustainabilityandrenewableenergysources.
ThisSolarpowerdemonstrationunithighlightstheusefulnessofharnessingsunlightusingphotovoltaiccellsasanenergysourceandfurthergraspgod’sgiftsandmakebetteruseofthem.
Acknowledgements
SustainabilityInitiativeFundbyCalvinCollege,GrandRapids,Michigan
Methods
Thisblockwasattachedtoaheatsinkusingscrewsandsiliconecompoundtofillanymicro-gaps.Fanswereaddedtohelpairflowintheheatsink.
TwoSolarpanelsweregluedontoaplasticboardandattachedtoaswiveltotesttiltrightabovetheLEDblock.Thiswasconnectedtoasolarchargercontroller.
Problem Statement
Need:Asolarpowersystemallowsinstructorstobringinfunctionalsystemstoclassroomstodemonstrateseveralaspectsofsolarpowersystems,addressingsustainabilityandrenewableenergyissues.
Objectives:
1. Todesignandtestasolarpowersystemdemonstrationunit.
2. Todevelopameasurementfixtureandintegrateitssoftwarewithspectrometerfortestingsolarsimulatorsinfuture.
Future Development
[1]www.seoulsemicon.com/_upload/Goods_Spec/X42182(0).pdf
[2]IEC60904-9Ed.2,Photovoltaicdevices,Part9:Solarsimulatorperformancerequirements,2007.
Wehavesuccessfullybuiltasolarsystemdemounitbutweneedtoapplythistoalargerscale(indevelopment)andtestrequiredIECspecifications[2]suchasSpectralMatch,IrradianceUniformity,andTemporalStabilitywhenthelightsourceconsistsofmulticolorLEDs.
ThiswillallowustounderstandtheapplicabilityofaLEDbasedsolarsimulatortotestsolarpanels.
Fig.1:WarmwhiteLEDspectrum[1]
ThesystemwastestedundervariousloadsandtheIVdiagramwascreatedabove.ThemeasuredpoweroutputoftheLEDarraywasabout628W/m2..Fromthisthemax.poweroutputofthepanelwasabout4Wandhadaefficiencyofabout5%.
Fig.4:IVdiagramobtainedfromtestingtheunit
Fig.3:Connectiondiagramfordemounit
Fig.2:TheconstructedLEDarray
Fig.5:LEDmeasurementfixture