Ib pab neeg tshawb fawb thoob ntiaj teb tau tshawb xyuas seb qhov overirradiance (OI) tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm PV kev teeb tsa ntawm qhov qis- thiab nruab nrab-latitudes thiab tau pom ntau qhov teeb meem yuav tshwm sim thaum OI cov xwm txheej kav ntev tshaj li ib feeb thiab ntawm qhov kub thiab txias tshaj 30 C.
Cov xwm txheej no yuav cuam tshuam rau kev ua haujlwm ntawm cov nroj tsuag photovoltaic, kev ruaj ntseg ntawm daim phiaj hluav taws xob, thiab kev ua haujlwm ntawm inverters. Cov teebmeem no yog vim qhov nce thiab qhov hloov pauv loj ntawm irradiance, uas tuaj yeem sib txawv ntawm ntau dua 900 W / m2.
"Rau peb qhov kev kwv yees, kev lag luam hauv lub xyoo dhau los, kev lag luam PV, tau tsis quav ntsej txog overirradiance, tej zaum yog vim tsis paub txog lossis kev ntseeg tias cov xwm txheej no tsis tshua muaj thiab cais tawm," tus kws tshawb fawb tus thawj coj, Marco Zamalloa, hais.pv magazine. "Peb tus kheej tsis tau paub txog cov xwm txheej no ua ntej pom lawv hauv peb cov ntaub ntawv irradiance ob peb xyoos dhau los. Txawm li cas los xij, txij li peb tseem tshiab rau cov ncauj lus no, peb tsis tuaj yeem hais meej meej seb qee qhov PV zog kev lag luam ceg thiab cov neeg tsim khoom tam sim no xav txog cov no. overirradiance tej yam kev mob. "
Raws li Zamalloa, OI tej yam kev mob tshwm sim thiab tshwm sim txhua qhov chaw nrog huab tsim. Nws hais ntxiv tias "Lawv tuaj yeem xav tias yog lub ntsiab lus tseem ceeb ntawm lub iav tsom iav," nws hais ntxiv. "Nrog rau kev txav ntawm huab cua, nws taug kev hla lub ntiaj teb saum npoo av. Peb tsuas yog paub txog kev txhim kho irradiance thaum lub focal point hla lub sensor."
Nyob rau hauv daim ntawv "Overirradiance tej yam kev mob thiab lawv cuam tshuam rau lub spectral tis ntawm qis- thiab nruab nrab-latitude qhov chaw," luam tawm nyob rau hauvHnub Ci Zog, Zamalloa thiab nws cov npoj yaig tau txheeb xyuas qhov spectral faib ntawm OI cov xwm txheej hauv Lima, Madrid, thiab Berlin siv cov spectroradiometers, qaij thiab azimuth kaum, thiab sampling lub sijhawm. Lawv ntsuas, tshwj xeeb tshaj yog, spectral faib ntawm hnub ci irradiance hauv W / m2/ nm, xws li ntawm 350 txog 1050 nm, ntawm ob xyoos ntawm cov ntaub ntawv ntsuas spectral.
Los ntawm lawv cov kev txheeb xyuas, lawv pom tias OI tej yam kev mob ua rau liab-hloov pauv thiab huab xiav-hloov ntawm lub ntuj ntshiab spectrum. "Kev hloov pauv liab tshwm sim los ntawm overirradiance tej yam kev mob tshwm sim nyob rau hauv sib txawv spectral distributions, nyob ntawm seb qhov nruab nrab photon zog ntawm lub ntuj ntshiab," lawv piav qhia, ntxiv hais tias lub spectral liab-hloov qhia tau hais tias ib tug huab-txhim kho qhov zoo ntawm cov irradiance ncaj qha.
"Peb ntseeg tias kev lag luam photovoltaic xav tau kev ntsuas ntau ntawm qhov cuam tshuam ntawm overirradiance ntawm kev ua haujlwm ntawm photovoltaic systems, uas nyuam qhuav pib ua," co-sau Jan Amaru Töfflinger tau hais. "Qhov kev hloov tam sim ntawd hauv irradiance ua rau nws tsim nyog los txhim kho lub sij hawm teb ntawm lub inverters thiab MPPT algorithm, ob qho tib si coj kom zoo dua ntawm kev nce hauv irradiance thiab kom tsis txhob cua sov ntawm cov cables, fuses, thiab photovoltaic modules vim qhov siab tam sim no tsim los ntawm cov xwm txheej overirradiance."
Töfflinger tseem hais ntxiv tias cov xwm txheej overirradiance yog nquag hauv Brazil thiab tuaj yeem muaj kev cuam tshuam txog kev lag luam thiab kev lag luam ntawm cov nroj tsuag photovoltaic. "Peb tau hu rau cov npoj yaig los ntawm Brazil, qhov twg, txog tam sim no, feem ntau cov ntaub ntawv tau sau txog qhov cuam tshuam ntawm overirradiance tej yam kev mob ntawm PV nroj tsuag," nws xaus lus. "Lawv hais tias lawv paub zoo txog qhov muaj peev xwm txaus ntshai thiab tau ceev faj hauv kev ntsuas lub inverter thiab kev tiv thaiv fuses."
Pawg tshawb fawb yog tsim los ntawm cov kws tshawb fawb los ntawm Pontificia Universidad Católica del Perú, Lub teb chaws Yelemees Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, thiab University of Jaén hauv Spain.
