Izizathu eziyishumi zokuthi kungani abashayeli be-LED behluleka
Ngokuyisisekelo, umsebenzi oyinhloko womshayeli we-LED ukuguqula umthombo wamandla kagesi we-AC ofakiwe ube umthombo wamanje amandla awo okukhipha amandla angahluka ngokwehla kwe-voltage eya phambili ye-LED Vf.
Njengengxenye eyinhloko ekukhanyeni kwe-LED, ikhwalithi yomshayeli we-LED ithinta ngokuqondile ukuthembeka nokuzinza kwe-luminaire jikelele. Lesi sihloko siqala kumshayeli we-LED nobunye ubuchwepheshe obuhlobene kanye nesipiliyoni sohlelo lokusebenza lwekhasimende, futhi sihlaziya ukwehluleka okuningi ekwakhiweni kwesibani kanye nokusetshenziswa:
1. Ububanzi bokuhluka kwe-LED bead bead Vf akucatshangwa, okuholela ekusebenzeni okuphansi kwesibani ngisho nokusebenza okungazinzile.
Ukuphela komthwalo we-luminaire ye-LED ngokuvamile kwakhiwa inombolo yezintambo ze-LED ngokuhambisana, futhi amandla ayo ogesi okusebenza athi Vo=Vf*Ns, lapho i-Ns imelela inani lama-LED axhunywe ochungechungeni. I-Vf ye-LED iyashintshashintsha ngokushintshashintsha kwezinga lokushisa. Ngokuvamile, i-Vf iba phansi emazingeni okushisa aphezulu futhi i-Vf iba phezulu emazingeni okushisa aphansi lapho kubangelwa umsinga ongashintshi. Ngakho-ke, i-voltage yokusebenza ye-luminaire ye-LED ekushiseni okuphezulu ihambisana ne-VoL, futhi i-voltage yokusebenza ye-luminaire ye-LED ekushiseni okuphansi ihambisana ne-VoH. Uma ukhetha umshayeli we-LED, cabanga ukuthi uhla lwe-voltage ephumayo yomshayeli likhulu kune-VoL~VoH.
Uma i-voltage ephezulu yokuphuma yomshayeli we-LED ekhethiwe ingaphansi kune-VoH, amandla aphezulu we-luminaire angase angafinyeleli amandla angempela adingekayo ekushiseni okuphansi. Uma i-voltage ephansi kakhulu yomshayeli we-LED ekhethiwe ingaphezu kwe-VoL, ukuphuma komshayeli kungase kudlule ibanga lokusebenza kuzinga lokushisa eliphezulu. Ayizinzile, isibani sizokhanyisa nokunye.
Kodwa-ke, uma kucatshangelwa ukucatshangelwa kwezindleko nokusebenza kahle, uhla lwamandla okukhipha amandla omshayeli we-LED we-ultra-wide angeke luqhutshekwe: ngoba i-voltage yomshayeli isesikhawuni esithile kuphela, ukusebenza kahle komshayeli kuphezulu kakhulu. Ngemva kokweqiwa kobubanzi, ukusebenza kahle kanye nesici samandla (PF) kuzoba kubi kakhulu. Ngesikhathi esifanayo, uhla lwe-voltage okukhiphayo lomshayeli lubanzi kakhulu, okuholela ekwenyukeni kwezindleko nokusebenza kahle akukwazi ukwenziwa kahle.
2. Ukuntula ukucatshangelwa kokugodlwa kwamandla kanye nezimfuneko zokwehliswa
Ngokuvamile, amandla okuzisholo omshayeli we-LED idatha elinganiselwe ku-voltage elinganiselwe ye-ambient nekaliwe. Uma kubhekwa izinhlelo zokusebenza ezihlukene amakhasimende ahlukene anazo, abahlinzeki abaningi babashayeli be-LED bazohlinzeka ngamajika okunciphisa amandla ezincazelweni zomkhiqizo wabo siqu (umthwalo ovamile uma kuqhathaniswa nejika lokushintsha kwezinga lokushisa elizungezile kanye nomthwalo uma kuqhathaniswa nejika lokunciphisa amandla kagesi wokufakwayo).
3. Awuziqondi izici zokusebenza ze-LED
Amanye amakhasimende acele ukuthi amandla okufaka isibani abe yinani elingaguquki, elilungiswe ngephutha elingu-5%, futhi ukukhishwa kwamanje kungalungiswa kuphela emandleni acacisiwe esibani ngasinye. Ngenxa yokushisa okuhlukene kwendawo yokusebenza kanye nezikhathi zokukhanyisa, amandla esibani ngasinye azohluka kakhulu.
Amakhasimende enza izicelo ezinjalo, ngaphandle kokucatshangelwa kwawo kwezici zebhizinisi. Kodwa-ke, izici ze-volt-ampere ze-LED zinquma ukuthi umshayeli we-LED ungumthombo wamanje ongashintshi, futhi i-voltage yayo ephumayo iyahluka nge-voltage yochungechunge lomthwalo we-LED Vo. Amandla okufaka ayahluka nge-Vo uma ukusebenza kahle komshayeli kukonke kufana kakhulu.
Ngesikhathi esifanayo, ukusebenza kahle okuphelele komshayeli we-LED kuzokhula ngemuva kwebhalansi yokushisa. Ngaphansi kwamandla okukhiphayo afanayo, amandla okokufaka azokwehla uma kuqhathaniswa nesikhathi sokuqalisa.
Ngakho-ke, lapho isicelo somshayeli we-LED sidinga ukwenza izidingo, kufanele siqale siqonde izici zokusebenza ze-LED, sigweme ukwethula ezinye izinkomba ezingahambelani nesimiso sezici zokusebenza, futhi sigweme izinkomba ezedlula kude isidingo sangempela, futhi ugweme ikhwalithi eyeqile kanye nokumosha izindleko.
4. Ayivumelekile ngesikhathi sokuhlolwa
Kube khona amakhasimende athenge izinhlobo eziningi zamashayeli e-LED, kodwa wonke amasampula ahlulekile ngesikhathi sokuhlolwa. Kamuva, ngemva kokuhlaziya endaweni, ikhasimende lasebenzisa isilawuli sikagesi esizishintshayo ukuze sihlole ngokuqondile ukunikezwa kwamandla komshayeli we-LED. Ngemva kokukhanyisa, isilawuli sathuthukiswa kancane kancane sisuka ku-0Vac saya ku-voltage elinganiselwe yokusebenza yomshayeli we-LED.
Ukusebenza okunjalo kokuhlola kwenza kube lula ngomshayeli we-LED ukuthi aqale futhi alayishe ku-voltage encane yokufaka, okungabangela ukuba okokufaka kube kukhulu kunevelu elinganiselwe, kanye namadivayisi ahlobene nokokufaka kwangaphakathi njengama-fuse, amabhuloho okulungisa kabusha, i-thermistor nokunye kuyahluleka ngenxa yamanje ngokweqile noma ukushisa ngokweqile, okubangela ukuthi idrayivu ihluleke.
Ngakho-ke, indlela yokuhlola eyiyo ukulungisa isilawuli se-voltage ebangeni elilinganiselwe lokusebenza le-voltage yomshayeli we-LED, bese uxhuma umshayeli ekuhlolweni kwamandla.
Kunjalo, ukuthuthukisa idizayini ngokobuchwepheshe kungagwema ukwehluleka okubangelwa ukusetshenziswa kabi kokuhlolwa okunjalo: ukusetha isekethe yokunciphisa ugesi wokuqalisa kanye nesekethe yokuvikela i-undervoltage ngokokufaka komshayeli. Uma okokufaka kungafinyeleli ku-voltage yokuqalisa ebekwe umshayeli, umshayeli akasebenzi; lapho i-voltage yokufaka yehla endaweni yokuvikela i-undervoltage, umshayeli ungena esimweni sokuvikela.
Ngakho-ke, ngisho noma izinyathelo zokusebenza zokulawula ezizinconyiwe zisasetshenziswa ngesikhathi sokuhlolwa kwekhasimende, idrayivu inomsebenzi wokuzivikela futhi ayihluleki. Kodwa-ke, amakhasimende kufanele aqonde ngokucophelela ukuthi imikhiqizo yomshayeli we-LED ethengiwe inalo msebenzi wokuvikela ngaphambi kokuhlolwa (kucatshangelwa indawo yangempela yohlelo lokusebenza yomshayeli we-LED, abashayeli abaningi be-LED abanawo lo msebenzi wokuvikela).
5. Imithwalo ehlukene, imiphumela yokuhlolwa ehlukene
Lapho umshayeli we-LED ehlolwa ngokukhanya kwe-LED, umphumela uvamile, futhi ngokuhlolwa komthwalo we-elekthronikhi, umphumela ungase ube ongavamile. Ngokuvamile lesi simo sinezizathu ezilandelayo:
(1) I-voltage ephumayo noma amandla okukhiphayo komshayeli adlula ibanga lokusebenza lemitha yomthwalo we-elekthronikhi. (Ikakhulukazi kumodi ye-CV, amandla aphezulu okuhlola akumele eqe u-70% wamandla amakhulu okulayisha. Uma kungenjalo, umthwalo ungase uvikelwe ngamandla angaphezu kwamandla ngesikhathi sokulayisha, okubangele ukuthi idrayivu ingasebenzi noma ilayishe.
(2) Izici zemitha yomthwalo we-elekthronikhi esetshenzisiwe azifanelekile ukukala umthombo wamanje ongashintshi, futhi ukugxuma kwe-voltage yomthwalo kwenzeka, okuholela ekutheni idrayivu ingasebenzi noma ilayishe.
(3) Ngenxa yokuthi okokufaka kwemitha yomthwalo we-elekthronikhi kuzoba ne-capacitance enkulu yangaphakathi, ukuhlolwa kulingana ne-capacitor enkulu exhunywe ngokuhambisana nokuphuma komshayeli, okungabangela isampula yamanje engazinzile yomshayeli.
Ngenxa yokuthi umshayeli we-LED uklanyelwe ukuhlangabezana nezici zokusebenza zezibani ze-LED, ukuhlolwa okuseduze kwezinhlelo zokusebenza zangempela nezomhlaba wangempela kufanele kube ukusebenzisa ubuhlalu be-LED njengomthwalo, intambo ku-ammeter ne-voltmeter ukuhlola.
6. Izimo ezilandelayo ezivame ukwenzeka zingadala umonakalo kumshayeli we-LED:
(1) I-AC ixhunywe ku-DC okukhiphayo komshayeli, okubangela ukuthi idrayivu yehluleke;
(2) I-AC ixhunywe kokokufaka noma okukhiphayo kwedrayivu ye-DC/DC, okubangela ukuthi idrayivu ihluleke;
(3) Ukuphela kokuphumayo okungaguquki kwamanje kanye nokukhanya okushuniwe kuxhunywe ndawonye, okuholela ekuhlulekeni kwedrayivu;
(4) Umugqa wesigaba uxhunywe ocingweni lwaphansi, okuholela ekushayeleni ngaphandle kokuphuma kanye negobolondo lishajwe;
7. Ukuxhumeka okungalungile komugqa weSigaba
Ngokuvamile izinhlelo zokusebenza zobunjiniyela bangaphandle ziyisistimu yezintambo ezine zesigaba se-3, nezinga likazwelonke njengesibonelo, umugqa wesigaba ngasinye nomugqa ongu-0 phakathi kwe-voltage yokusebenza elinganiselwe ngu-220VAC, umugqa wesigaba nomugqa wesigaba phakathi kwe-voltage ngu-380VAC. Uma isisebenzi sokwakha sixhuma okokufaka kwedrayivu emigqeni yezigaba ezimbili, i-voltage yokufaka yomshayeli we-LED yeqiwa ngemva kokuba amandla avuliwe, okubangela ukuthi umkhiqizo ungaphumeleli.
8. Ububanzi bokushintshashintsha kwegridi yamandla bungaphezu kobubanzi obunengqondo
Lapho i-wiring yegatsha legridi ye-transformer iyinde kakhulu, kunemishini emikhulu yamandla egatsheni, lapho imishini emikhulu iqala futhi ima, i-voltage yegridi yamandla izoshintshashintsha kakhulu, futhi iholele ekungazinzini kwegridi yamandla. Lapho i-voltage esheshayo yegridi idlula u-310VAC, kuyenzeka konakalise idrayivu (ngisho noma kukhona idivayisi yokuvikela umbani ayisebenzi, ngoba idivayisi yokuvikela umbani iwukubhekana nenqwaba yama-S level pulse spikes, kuyilapho igridi yamandla ukushintshashintsha kungase kufinyelele inqwaba ye-MS, noma ngisho namakhulu ama-ms).
Ngakho-ke, amandla egatsha lokukhanyisa emigwaqweni Igridi inomshini omkhulu wamandla okufanele unake ngokukhethekile, kungcono ukuqapha izinga lokuguquguquka kwegridi yamandla, noma uhlukanise ukunikezwa kwamandla kagesi wegridi yamandla.
9. Ukukhubeka njalo kolayini
Isibani esisemgwaqweni ofanayo sixhunywe kakhulu, okuholela ekulayisheni ngokweqile komthwalo esigabeni esithile, kanye nokusabalalisa okungalingani kwamandla phakathi kwama-facies, okubangela ukuthi umugqa uhambe njalo.
10. Drive Heat Dissipation
Lapho idrayivu ifakwe endaweni engenawo umoya, indlu yokushayela kufanele ixhumane nendlu ye-luminaire ngangokunokwenzeka, uma izimo zivuma, kugobolondo kanye negobolondo lesibani endaweni yokuxhumana embozwe ngeglue yokuhambisa ukushisa noma inamathiselwe. i-heat conduction pad, ithuthukisa ukusebenza kokukhipha ukushisa kwedrayivu, ngaleyo ndlela iqinisekise impilo nokwethembeka kwedrayivu.
Ukufingqa, abashayeli be-LED ekusetshenzisweni kwangempela kwemininingwane eminingi okufanele banake, izinkinga eziningi zidinga ukuhlaziya kusengaphambili, ukulungisa, ukugwema ukwehluleka nokulahlekelwa okungadingekile!