Akuti United States Department of Energy (DOE) posachedwapa yatulutsa lipoti lachitatu la kudalirika kwa dalaivala wa LED kutengera kuyesa kwa moyo wautali kwanthawi yayitali. Ofufuza a Solid-state lighting (SSL) a ku United States Department of Energy amakhulupirira kuti zotsatira zaposachedwa zatsimikizira njira yofulumira yoyesera (AST), yomwe yawonetsa ntchito yabwino pansi pa zovuta zosiyanasiyana. Kuphatikiza apo, zotsatira za mayeso ndi zolephera zoyezera zimatha kudziwitsa opanga madalaivala njira zoyenera kuti apititse patsogolo kudalirika.

Monga zimadziwika bwino, madalaivala a LED, monga zida za LED okha, ndizofunikira kuti kuwala kwabwino kwambiri. Kupanga koyenera kwa dalaivala kumatha kuthetsa flicker ndikupereka kuyatsa kofanana. Ndipo dalaivala ndiyenso gawo lofunikira kwambiri pamagetsi a LED kapena zida zowunikira kuti zisagwire ntchito. Pambuyo pozindikira kufunikira kwa madalaivala, DOE inayamba ntchito yoyesera madalaivala kwa nthawi yaitali mu 2017. Ntchitoyi imaphatikizapo njira imodzi ndi madalaivala amtundu wambiri, omwe angagwiritsidwe ntchito pokonza zipangizo monga matabwa a denga.

Dipatimenti ya Zamagetsi ku United States idatulutsa kale malipoti awiri okhudza momwe mayesowo akuyendera komanso momwe akuyendera. Tsopano ndi lipoti lachitatu loyesa, lomwe limaphatikizapo zotsatira zoyeserera za maola 6000-7500 ogwirira ntchito pansi pamikhalidwe ya AST.

M'malo mwake, makampaniwa alibe nthawi yochuluka yoyesa ma drive m'malo ogwirira ntchito wamba kwa zaka zambiri. M'malo mwake, United States Department of Energy ndi makontrakitala ake RTI International ayesa actuator mu zomwe amatcha chilengedwe cha 7575 - chinyezi chamkati ndi kutentha zimasungidwa pa 75 ° C. Mayesowa amaphatikizapo magawo awiri a kuyesa kwa dalaivala, popanda njira. Mapangidwe a siteji imodzi amawononga ndalama zochepa, koma alibe dera losiyana lomwe limatembenuza AC kukhala DC kenako ndikuwongolera zamakono, zomwe zimakhala zosiyana ndi mapangidwe a magawo awiri.

Dipatimenti ya Zamagetsi ku United States inanena kuti poyesa ma drive 11 osiyanasiyana, ma drive onse adayenda kwa maola 1000 m'malo 7575. Kuyendetsa kukakhala m'chipinda cha chilengedwe, katundu wa LED wolumikizidwa ndi galimotoyo amakhala pansi pa chilengedwe chakunja, kotero kuti chilengedwe cha AST chimangokhudza kuyendetsa. DOE sinayanjanitse nthawi yogwira ntchito pansi pamikhalidwe ya AST ndi nthawi yogwira ntchito m'malo abwinobwino. Gulu loyamba la zida zinalephera pambuyo pa maola 1250 akugwira ntchito, ngakhale zida zina zikugwirabe ntchito. Pambuyo poyesa maola 4800, 64% ya zipangizo zinalephera. Komabe, poganizira malo oyeserera movutirapo, zotsatirazi ndizabwino kwambiri.

Ofufuza apeza kuti zolakwika zambiri zimachitika mu gawo loyamba la dalaivala, makamaka pamagetsi owongolera mphamvu (PFC) ndi ma electromagnetic interference (EMI) kupondereza mabwalo. M'magawo onse awiri a dalaivala, ma MOSFET alinso ndi zolakwika. Kuphatikiza pakutchula madera monga PFC ndi MOSFET omwe amatha kukonza mapangidwe oyendetsa, AST iyi ikuwonetsanso kuti zolakwika zimatha kuneneratu potengera momwe dalaivala amagwirira ntchito. Mwachitsanzo, kuyan'anila mphamvu yamagetsi ndi ma surge current kumatha kuzindikira zolakwika pasadakhale. Kuwonjezeka kwa kung'anima kukuwonetsanso kuti vuto latsala pang'ono kuchitika.

Kwa nthawi yayitali, pulogalamu ya SSL ya DOE yakhala ikuchita kuyezetsa ndi kufufuza kofunikira m'munda wa SSL, kuphatikiza kuyesa kwazinthu zoyeserera pansi pa projekiti ya Gateway ndikuyesa magwiridwe antchito amalonda pansi pa polojekiti ya Caliper.