M'mbuyomu, nyali za halogen nthawi zambiri zinkasankhidwa kuti ziunikire galimoto.M'zaka zaposachedwapa, ntchito LED mu galimoto lonse anayamba kukula mofulumira.Moyo wautumiki wa nyali zachikhalidwe za halogen ndi pafupifupi maola 500, pomwe nyali zazikulu za LED zimafika maola 25000.Ubwino wa moyo wautali pafupifupi umalola kuti magetsi a LED aziphimba moyo wonse wagalimoto.
Kugwiritsa ntchito nyali zakunja ndi zamkati, monga nyali yakutsogolo, nyali yotembenukira, nyali ya mchira, nyali yamkati, ndi zina zambiri, idayamba kugwiritsa ntchito gwero la kuwala kwa LED kupanga ndi kuphatikiza.Osati makina owunikira magalimoto okha, komanso machitidwe owunikira kuchokera kumagetsi ogula kupita ku zipangizo zamagetsi zamagetsi.Mapangidwe a LED m'machitidwe ounikirawa akuchulukirachulukira komanso ophatikizika kwambiri, omwe amadziwika kwambiri pamakina owunikira magalimoto.
Kukula mwachangu kwa LED mumayendedwe owunikira magalimoto
Monga gwero lounikira, LED sikuti imakhala ndi moyo wautali, koma kuwala kwake kumaposanso nyali wamba wa halogen.Kuwala kowala kwa nyali za halogen ndi 10-20 Im/W, ndipo kuwala kwa LED ndi 70-150 Im/W.Poyerekeza ndi dongosolo losasunthika la kutentha kwa nyali zachikhalidwe, kukonza bwino kwa kuwala kowala kumakhala kopulumutsa mphamvu komanso kothandiza pakuwunikira.Nthawi yoyankha ya nanosecond ya LED ndiyotetezekanso kuposa nthawi yachiwiri yoyankhira nyali ya halogen, yomwe imawonekera makamaka patali.
Ndi kusintha kosalekeza kwa mapangidwe a LED ndi mulingo wophatikizira komanso kutsika kwapang'onopang'ono kwa mtengo, gwero la kuwala kwa LED latsimikiziridwa mu zamagetsi zamagalimoto m'zaka zaposachedwa ndipo lidayamba kuchulukitsa mwachangu gawo lake pamakina owunikira magalimoto.Malinga ndi data ya TrendForce, kuchuluka kwa nyali za LED m'magalimoto onyamula anthu padziko lonse lapansi kudzafika 60% mu 2021, ndipo kuchuluka kwa nyali za LED m'magalimoto amagetsi kudzakhala kokwezeka, kufika 90%.Akuti kuchuluka kolowera kudzakwera mpaka 72% ndi 92% motsatana mu 2022.
Kuphatikiza apo, matekinoloje apamwamba monga nyali zanzeru, nyali zozindikiritsa, nyali zanzeru zakumlengalenga, chiwonetsero chagalimoto cha MiniLED/HDR chathandiziranso kulowa kwa LED pakuwunikira kwagalimoto.Masiku ano, ndi chitukuko cha kuyatsa magalimoto kutengera umunthu, kuwonetsera kulankhulana, ndi kuthandizira kuyendetsa galimoto, onse opanga magalimoto achikhalidwe ndi opanga magalimoto amagetsi ayamba kufunafuna njira zosiyanitsira LED.
Kusankhidwa kwa LED yoyendetsa topology
Monga chipangizo chotulutsa kuwala, LED mwachilengedwe imayenera kuyendetsedwa ndi dera loyendetsa.Nthawi zambiri, kuchuluka kwa LED kukakhala kwakukulu kapena kugwiritsa ntchito mphamvu kwa LED kuli kwakukulu, ndikofunikira kuyendetsa (nthawi zambiri magawo angapo agalimoto).Poganizira za kusiyanasiyana kwa kuphatikiza kwa LED, sizophweka kuti opanga apange woyendetsa bwino wa LED.Komabe, zitha kuwonekeratu kuti chifukwa cha mawonekedwe a LED palokha, imapanga kutentha kwakukulu ndipo imayenera kuchepetsa mphamvu yapano kuti itetezedwe, kotero kuti nthawi zonse pamakhala gwero lamagetsi ndiye njira yabwino kwambiri yoyendetsera LED.
Mfundo yoyendetsera galimoto imagwiritsa ntchito mphamvu zonse za ma LED mu dongosolo ngati chizindikiro choyezera ndikusankha madalaivala osiyanasiyana a LED.Ngati voliyumu yakutsogolo yonse ndi yayikulu kuposa voliyumu yolowera, ndiye kuti muyenera kusankha chowonjezera kuti mukwaniritse zofunikira zamagetsi.Ngati mphamvu yakutsogolo yonse ndiyotsika kuposa mphamvu yolowera, muyenera kugwiritsa ntchito njira yotsikirapo kuti muwongolere bwino ntchitoyo.Komabe, ndi kusintha kwa mphamvu za kuwala kwa LED ndi kutuluka kwa zofunikira zina, posankha madalaivala a LED, tisamangoganizira za msinkhu wa mphamvu, komanso kuganizira mozama za topology, mphamvu, dimming ndi njira zosakaniza mitundu.
Kusankhidwa kwa topology kumadalira malo enieni a LED mumayendedwe agalimoto a LED.Mwachitsanzo, pamtengo wapamwamba komanso nyali yakutsogolo yakuwunikira kwamagalimoto, ambiri aiwo amayendetsedwa ndi ma topology otsika.Mayendedwe otsika awa ndiabwino kwambiri pakuchita kwa bandwidth.Itha kukwanitsanso kuchita bwino kwa EMI kudzera pamapangidwe a ma frequency spectrum modulation.Ndi chisankho chotetezeka kwambiri cha topology pagalimoto ya LED.Kuchita kwa EMI kwa boost LED drive ndikwabwino kwambiri.Poyerekeza ndi mitundu ina ya topology, ndiye njira yaying'ono kwambiri yoyendetsa, ndipo imagwiritsidwa ntchito kwambiri mu nyali zotsika komanso zapamwamba komanso zowunikira kumbuyo zamagalimoto.
Nthawi yotumiza: Dec-06-2022