Kuxelwa ukuba iSebe lezaMandla lase-United States (DOE) lisanda kukhupha ingxelo yesithathu yokuthembeka komqhubi we-LED esekelwe kuvavanyo lobomi olukhawulezayo lwexesha elide. Abaphandi be-Solid-state lighting (SSL) yeSebe lezaMandla eUnited States bakholelwa ukuba iziphumo zakutshanje ziqinisekisile indlela yokuvavanya uxinzelelo olukhawulezileyo (AST), olubonise ukusebenza kakuhle phantsi kweemeko ezahlukeneyo ezinzima. Ukongeza, iziphumo zovavanyo kunye nezinto ezilinganisiweyo zokungaphumeleli zinokuzisa abaphuhlisi babaqhubi bezicwangciso ezifanelekileyo zokuphucula ngakumbi ukuthembeka.

Njengoko kusaziwa, abaqhubi be-LED, njengamacandelo e-LED ngokwabo, babalulekile kumgangatho wokukhanya ofanelekileyo. Uyilo olufanelekileyo lomqhubi lunokuphelisa i-flicker kwaye lunikeze ukukhanya okufanayo. Kwaye umqhubi ukwalelona candelo linokwenzeka kwizibane ze-LED okanye izibane zokukhanyisa ukuba zingasebenzi kakuhle. Emva kokuqonda ukubaluleka kwabaqhubi, i-DOE yaqala iprojekthi yokuvavanya umqhubi wexesha elide kwi-2017. Le projekthi ibandakanya ishaneli enye kunye nabaqhubi beendlela ezininzi, ezingasetyenziselwa ukulungisa izixhobo ezifana ne-grooves yesilingi.

ISebe lezaMandla laseMelika liye lakhupha iingxelo ezimbini malunga nenkqubo yovavanyo kunye nenkqubela phambili. Ngoku yingxelo yesithathu yovavanyo lwedatha, ebandakanya iziphumo zovavanyo lwemveliso yeeyure ezingama-6000-7500 zokusebenza phantsi kweemeko ze-AST.

Ngapha koko, ishishini alinaxesha lingako lokuvavanya iidrive kwiindawo eziqhelekileyo zokusebenza iminyaka emininzi. Ngokuchasene noko, iSebe lezaMandla lase-United States kunye nekontraki yalo i-RTI International baye bavavanya i-actuator kwinto abayibiza ngokuba yindawo ye-7575 - umswakama wangaphakathi kunye nobushushu bugcinwe kwi-75 ° C. Olu vavanyo lubandakanya izigaba ezimbini zokuvavanya umqhubi, ngaphandle ijelo. Uyilo lwenqanaba elinye luxabisa kancinci, kodwa luswele isekethe eyahlukileyo eqala ukuguqula i-AC ukuya kwi-DC kwaye ilawule okwangoku, eyodwa kuyilo lwamanqanaba amabini.

Isebe lezaMandla laseUnited States lanikela ingxelo yokuba kuvavanyo lweedrive ezahlukeneyo ezili-11, zonke iidrives ziqhube iiyure ezili-1000 kwindawo ye-7575. Xa i-drive ibekwe kwigumbi lokusingqongileyo, umthwalo we-LED oqhagamshelwe kwi-drive ufumaneka phantsi kweemeko zendalo zangaphandle, ngoko ke indawo ye-AST ichaphazela kuphela ukuqhuba. I-DOE ayizange idibanise ixesha lokusebenza phantsi kweemeko ze-AST kunye nexesha lokusebenza phantsi kweemeko eziqhelekileyo. Ibhetshi yokuqala yezixhobo ayiphumelelanga emva kweeyure ze-1250 zokusebenza, nangona ezinye izixhobo zisasebenza. Emva kokuvavanywa kweeyure ze-4800, i-64% yezixhobo zahluleka. Nangona kunjalo, ngokuqwalasela imeko enzima yovavanyo, ezi ziphumo sele zilungile kakhulu.

Abaphandi bafumanise ukuba uninzi lweziphoso zenzeka kwinqanaba lokuqala lomqhubi, ngakumbi kulungiso lwamandla (PFC) kunye nokuphazamiseka kwe-electromagnetic interference (EMI) iisekethe zokucinezela. Kuzo zombini izigaba zomqhubi, ii-MOSFETs nazo zineempazamo. Ukongeza ekuchazeni iindawo ezifana ne-PFC kunye ne-MOSFET enokuphucula uyilo lomqhubi, le AST ikwabonisa ukuba iimpazamo zihlala ziqikelelwa ngokusekelwe ekubekeni iliso ekusebenzeni komqhubi. Umzekelo, ukubekwa esweni kwamandla kunye ne-surge current inokubona iimpazamo kwangethuba. Ukwanda kokudanyaza kukwabonisa ukuba ukungasebenzi kakuhle sele kuza kwenzeka.

Ixesha elide, inkqubo ye-SSL ye-DOE iqhuba uvavanyo olubalulekileyo kunye nophando kwintsimi ye-SSL, kubandakanywa novavanyo lwemveliso yesicelo phantsi kweprojekthi ye-Gateway kunye novavanyo lwemveliso yorhwebo phantsi kweprojekthi ye-Caliper.