光伏组件PID测试.pdf

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1、Insertpicturehere10x17cmTÜVSÜD:PartnershipaddsvaluePotentialInducedDegradation(PID)ServiceIntroduction┰೼(⬉࢓)䇅ᇐ㹄ޣ⌟䆩ᮍḜ(PID)᳡ࡵҟ㒡TÜVSÜDGreaterChinaContentݙᆍPotentialInducedDegradation(PID)BackgroundIntroduction1┰೼˄⬉࢓˅䇅ᇐ㹄ޣ˄PID˅㚠᱃ҟ㒡2WhatweinspectinPotentialInducedDegradation┰೼˄

2、⬉࢓˅䇅ᇐ㹄ޣ˄PID˅Ẕ偠ݙᆍStandardsrelatedtoPotentialInducedDegradation˄PID˅3┰೼˄⬉࢓˅䇅ᇐ㹄ޣ˄PID˅Ⳍ݇ᷛޚ4Presentongoingtestatlabℷ೼䖯㸠ⱘ䆩偠5Q&A䯂乬TÜVSÜD27May2012PotentialInducedDegradation(PID)BackgroundIntroduction∑WhatisPID˛ҔМᰃPID˛Potential-induceddegradation(PID)ofcrystallinesiliconsolarcell

3、swasfirstobservedbySunpowerin2005Itwasfoundthatleakagecurrentthroughthefrontglassandencapsulationmaterialleadstoaccumulationoftrappednegativechargeonatthesurfaceofthecells.Thesurfacepassivationprovidedbythefrontsurfacefieldofthesecellsdegraded.Thefillfactor(FF),short-circ

4、uitcurrentdensity(Jsc)andopen-circuitvoltage(Voc)weresignificantlyreduced.PID᳔ᮽᰃSunpower೼2005ᑈথ⦄ⱘDŽ㒘ӊ䭓ᳳ೼催⬉य़԰⫼ϟՓᕫ⦏⩗ǃᇕ㺙ᴤ᭭П䯈ᄬ೼ⓣ⬉⌕ˈ໻䞣⬉㥋㘮䲚೼⬉∴⠛㸼䴶ˈՓᕫ⬉∴㸼䴶ⱘ䩱࣪ᬜᵰᙊ࣪ˈᇐ㟈FFǃJscǃVoc䰡ԢˈՓ㒘ӊᗻ㛑ԢѢ䆒䅵ᷛޚDŽ∑In2010,NRELandSolondemonstratedthatPIDisafundamentalriskwheneverstate-of-the-artp-typecryst

5、allinesiliconsolarcellsareusedinstandardmodulesathighnegativebias೼2010ᑈˈNREL੠Solon䆕ᅲњ᮴䆎㒘ӊ䞛⫼ԩ⾡ᡔᴃⱘpൟ᱊⸙⬉∴⠛ˈ㒘ӊ೼䋳أय़ϟ䛑᳝PIDⱘ亢䰽DŽTÜVSÜDSlide3Thefutureisbright5May20091.1ThreedegradationmodesofPIDPIDⱘϝ⾡㹄ޣ῵ᓣ∑Ionicmotioninthepackagingoftheactivelayerleadstoaccumulationofchargeorcharg

6、edionsoverthesemiconductorsurfaceChargeinfluencessurfacefieldofsemiconductoractivelayer.Inseverecases,accumulationofmobileionssuchasNaintheglassleadstodelamination.ञᇐԧ⌏ᗻऎফࠄᕅડˈ՟བᇐ㟈ߚሖ⦄䈵˖⌏ᗻሖݙ⾏ᄤⱘ䖕⿏ˈᇐ㟈⬉㥋㘮䲚៪㗙ᏺ⬉⾏ᄤこ䖛ञᇐԧᴤ᭭㸼䴶⬉㥋ˈᕅડञᇐԧᴤ᭭㸼䴶ⱘ⌏ᗻऎDŽϹ䞡ᚙމϟˈ⾏ᄤⱘ㘮䲚ˈ՟བ䩴⾏ᄤ೼⦏⩗㸼䴶ⱘ㘮䲚ˈᇚᇐ㟈ߚሖ⦄䈵DŽ∑Ionic

7、motionalsotakesplacewithintheactivelayer,degradingsemiconductorjunctionpropertiesandcausingshuntsञᇐԧ㒧ⱘᗻ㛑㹄ޣ੠ߚ⌕⦄䈵˖⾏ᄤ䖕⿏Ӯথ⫳೼⌏ᗻሖݙˈՓञᇐԧ㒧ⱘᗻ㛑㹄ޣᑊ䗴៤ߚ⌕˗∑Usuallyinthepresenceofhumidityinthepackaging,electrolyticcorrosionoccursandmacroscopictransportofionizedconductormetalisobserved.⬉

8、⾏㜤㱔੠໻䞣䞥ሲ⾏ᄤⱘ䖕⿏⦄䈵˖䗮ᐌ⬅Ѣᇕ㺙䖛⿟Ёߎ⦄ⱘ⑓⇨Ӯ䗴៤⬉㾷㜤㱔੠䞥ሲᇐ⬉⾏ᄤⱘ䖕⿏DŽTÜVSÜDSlide4Thefutureisbright5May2009Mode1῵ᓣ1-Na