US Department of Energy (DOE) tsis ntev los no tau tshaj tawm nws qhov kev ntseeg siab thib peb ntawm LED tsav tsheb raws li kev ntsuas lub neej ntev ntev. Cov kws tshawb fawb los ntawm US Department of Energy's Solid State Lighting (SSL) ntseeg hais tias cov txiaj ntsig tshiab tshaj plaws tau lees paub qhov ua tau zoo ntawm Kev Ntsuas Kev Ntsuas Siab (AST) txoj hauv kev nyob rau hauv ntau yam mob hnyav. Tsis tas li ntawd, cov txiaj ntsig kev xeem thiab ntsuas qhov ua tsis tau zoo tuaj yeem qhia cov neeg tsav tsheb ntawm cov tswv yim cuam tshuam los txhim kho kev ntseeg tau ntxiv.

Raws li paub zoo, LED tsav tsheb, zoo liLED Cheebtsam lawv tus kheej, yog qhov tseem ceeb rau kev pom lub teeb zoo. Kev tsim tus tsav tsheb tsim nyog tuaj yeem tshem tawm flicker thiab muab teeb pom kev zoo ib yam. Thiab tus tsav tsheb kuj yog feem ntau yuav muaj feem nyob rau hauvLED teeblos yog teeb pom kev zoo fixtures rau malfunction. Tom qab paub txog qhov tseem ceeb ntawm cov neeg tsav tsheb, DOE tau pib qhov kev sim tsav tsheb mus sij hawm ntev hauv 2017. Qhov project no suav nrog ib qho channel thiab ntau tus tsav tsheb, uas tuaj yeem siv los kho cov cuab yeej xws li qab nthab grooves.

Lub Tsev Haujlwm Saib Xyuas Kev Ruaj Ntseg Hauv Tebchaws Meskas yav dhau los tau tshaj tawm ob tsab ntawv tshaj tawm txog cov txheej txheem kev sim thiab kev ua tiav, thiab tam sim no nws yog daim ntawv tshaj tawm thib peb cov ntaub ntawv, uas suav nrog cov txiaj ntsig ntawm cov khoom lag luam khiav hauv AST cov xwm txheej rau 6000 txog 7500 teev.

Qhov tseeb, kev lag luam tsis muaj sijhawm ntau los kuaj cov tsav tsheb hauv ib puag ncig kev ua haujlwm tau ntau xyoo. Ntawm qhov tsis sib xws, US Department of Energy thiab nws tus neeg cog lus RTI International tau sim tsav tsheb hauv qhov lawv hu ua 7575 ib puag ncig - ob qho tib si sab hauv tsev thiab qhov kub thiab txias tau tswj xyuas tas li ntawm 75 ° C. Qhov kev sim no muaj ob theem ntawm kev sim tsav tsheb, ywj siab ntawm lub channel. Ib theem tsim nqi tsawg dua, tab sis nws tsis muaj qhov sib cais uas thawj zaug hloov AC rau DC thiab tom qab ntawd tswj cov tam sim no, uas yog qhov tshwj xeeb rau ob-theem tsim.

Lub Tsev Haujlwm Saib Xyuas Kev Ruaj Ntseg Hauv Tebchaws Meskas tau tshaj tawm tias hauv kev sim ua rau 11 qhov sib txawv, txhua qhov tsav tau ua haujlwm hauv 7575 ib puag ncig rau 1000 teev. Thaum tsav tsheb nyob rau hauv ib puag ncig ib puag ncig, LED load txuas nrog lub tsav yog nyob rau hauv ib puag ncig sab nraum zoov, yog li AST ib puag ncig tsuas cuam tshuam rau tsav. DOE tsis koom nrog lub sijhawm ua haujlwm raws li AST cov xwm txheej nrog lub sijhawm ua haujlwm nyob rau hauv ib puag ncig ib puag ncig. Thawj pawg ntawm cov cuab yeej ua tsis tiav tom qab 1250 teev ntawm kev ua haujlwm, txawm hais tias qee cov khoom siv tseem ua haujlwm. Tom qab kev sim rau 4800 teev, 64% ntawm cov cuab yeej ua tsis tiav. Txawm li cas los xij, xav txog qhov kev sim hnyav ib puag ncig, cov txiaj ntsig no twb zoo heev.

Cov kws tshawb fawb tau pom tias feem ntau qhov ua yuam kev tshwm sim hauv thawj theem ntawm tus neeg tsav tsheb, tshwj xeeb tshaj yog nyob rau hauv lub hwj chim kho kom raug (PFC) thiab electromagnetic cuam tshuam (EMI) hluav taws xob hluav taws xob hluav taws xob. Hauv ob theem ntawm tus neeg tsav tsheb, MOSFETs kuj muaj qhov tsis raug. Ntxiv rau qhov qhia meej txog thaj chaw xws li PFC thiab MOSFET uas tuaj yeem txhim kho tus qauv tsav tsheb, AST no kuj qhia tau tias kev ua txhaum feem ntau tuaj yeem kwv yees raws li kev saib xyuas kev ua haujlwm ntawm tus tsav tsheb. Piv txwv li, kev saib xyuas lub zog thiab qhov hluav taws xob tam sim no tuaj yeem tshawb pom qhov ua txhaum ntxov ua ntej. Qhov nce hauv flashing kuj qhia tau tias muaj kev ua haujlwm tsis zoo yog yuav tshwm sim.

Tau ntev, DOE's SSL program tau ua qhov kev sim thiab tshawb fawb tseem ceeb hauv SSL teb, suav nrog ntawm Gateway