TheMphamvu yamagetsi ya LEDamasintha magetsi kukhala magetsi enaake komanso apano kuti ayendetse chosinthira magetsi cha LED.Kawirikawiri: zolowetsa zaMphamvu yamagetsi ya LEDzikuphatikizapo high-voltage mphamvu pafupipafupi AC, otsika-voteji DC, mkulu-voteji DC, otsika-voteji mkulu pafupipafupi AC, etc. Choncho lero ndikuwonetsani LED zonse voteji magetsi.
Mphamvu yamagetsi yanthawi zonsenjira yoyendetsera
Mphamvu yamagetsi yanthawi zonse
1. Pambuyo pa voteji kukhazikika dera limatsimikizira magawo osiyanasiyana, limatulutsa voteji yokhazikika, koma zotsatira zapano zikusintha ndi kuwonjezeka kapena kuchepa kwa katundu.
2. Ngakhale kuti dera lokhazikika la voteji silimawopa kutsegula kwa katundu, ndiloletsedwa kuti lichepetse katunduyo.
3. Kusintha kwamagetsi pambuyo pa kukonzanso kudzakhudza kuwala kwa LED.
4. Kuti apange chingwe chilichonse cha ma LED oyendetsedwa ndi magetsi okhazikika akuwonetsa kuwala kofananira, chopinga choyenera chiyenera kuwonjezeredwa.
5. Constant voltage drive circuit ndi yabwino kwambiri pakuyendetsa kwa LED, ndipo voteji nthawi zonse ndizochitika zamtsogolo.
Makhalidwe anthawi zonse voteji magetsi
(1) Kudalirika kwambiri
Makamaka ngati magetsi oyendetsa magetsi a mumsewu wa LED, amayikidwa pamalo okwera, zomwe zimapangitsa kukonza kukhala kovuta komanso kokwera mtengo.
(2) Kuchita bwino kwambiri
LED ndi chinthu chopulumutsa mphamvu, ndipo mphamvu ya magetsi oyendetsa galimoto iyenera kukhala yapamwamba.Ndikofunikira kwambiri kutaya kutentha kuchokera pamphambano kumene magetsi amaikidwa mkati mwa luminaire.Kuchita bwino kwa magetsi kumakhala kwakukulu, mphamvu zake zimakhala zochepa, ndipo kutentha komwe kumapangidwa mu nyali kumakhala kochepa, komwe kumachepetsanso kutentha kwa nyali.Ndizothandiza kuchedwetsa kuwonongeka kwa kuwala kwa LED.
(3) Mphamvu yapamwamba
Mphamvu yamagetsi ndiyofunikira pa gridi yamagetsi pakunyamula.Nthawi zambiri, palibe zizindikiro zovomerezeka pazida zamagetsi zomwe zili pansi pa 70 watts.Ngakhale mphamvu yochepa ya chipangizo chimodzi chamagetsi chokhala ndi mphamvu yaying'ono sichidzakhala ndi mphamvu zochepa pa gridi yamagetsi, kuunikira kwakukulu komwe kumagwiritsidwa ntchito usiku ndi kuchuluka kwa katundu wofanana kungayambitse kuipitsa kwakukulu kwa gridi yamagetsi.Kwa magetsi oyendetsa magetsi a 30- mpaka 40-watt LED, akuti pakhoza kukhala zofunikira zina zowonetsera mphamvu za mphamvu posachedwapa.
(4) Chitetezo chambiri
Kukhoza kwa LED kupirira mawotchi ndi osauka, makamaka kuthekera kwake kupirira reverse voltage.Kulimbitsa chitetezo m'derali n'kofunikanso.Magetsi ena a LED amaikidwa panja, monga magetsi amsewu a LED.Chifukwa cha kutsegula kwa grid katundu ndi kulowetsedwa kwa mphezi, mafunde osiyanasiyana adzalowa kuchokera ku grid system, ndipo ma surges ena adzawononga LED.Chifukwa chake, amawunikidwa kuti magetsi oyendetsa "Zhongke Huibao" akuyenera kukhala ndi zofooka zina pachitetezo cha opaleshoni.Ponena za kusinthidwa pafupipafupi kwa magetsi ndi nyali, magetsi oyendetsa magetsi a LED ayenera kukhala ndi mphamvu yoletsa kulowerera kwa ma surges ndikuteteza ma LED kuti asawonongeke.
(5) Chitetezo ntchito
Kuphatikiza pa ntchito zodzitchinjiriza zachitetezo chamagetsi, ndibwino kuti muwonjezere kutentha kwa LED pazotulutsa zomwe zikuchitika kuti muteteze kutentha kwa LED kukhala kokwera kwambiri;iyenera kutsatira malamulo achitetezo komanso zofunikira pamagetsi amagetsi.
Mphamvu zamagetsi zokhazikikaakhoza kugawidwa m'magulu asanu ndi limodzi malinga ndi dongosolo la dera
1. Kutsika pansi kwa thiransifoma:
Ubwino wamtunduwu wamagetsi ndi kukula kwake kochepa.Choyipa chake ndichakuti ndicholemera kwambiri komanso mphamvu zake ndizochepa kwambiri, nthawi zambiri zimakhala pakati pa 45% ndi 60%.Chifukwa kudalirika sikwapamwamba, sikumagwiritsidwa ntchito kawirikawiri.
2. Kuchepetsa mphamvu ya capacitor:
Mtundu uwu wa magetsi a LED umakhudzidwa mosavuta ndi kusinthasintha kwa magetsi a gridi, ndipo mphamvu zamagetsi ndizochepa.Sikoyenera kugwiritsa ntchito LED ikamawala, chifukwa dera limachepetsa voteji kudzera pa capacitor.Mukagwiritsidwa ntchito pakuwunikira, chifukwa cha kuyitanitsa ndi kutulutsa, pompopompo yomwe imadutsa mu LED yayikulu kwambiri ndipo imatha kuwononga chip mosavuta.
3. Kutsika pansi kwa thiransifoma:
Zofooka za dongosolo lamagetsiwa ndizotsika kwambiri kutembenuka, kuchuluka kwamagetsi ocheperako, nthawi zambiri 180 ~ 240V, komanso kusokoneza kwakukulu.
4. Kuchepetsa mphamvu ya Resistor:
Mphamvu yamagetsi ya njira yoperekera mphamvuyi ndi yotsika kwambiri, ndipo kudalirika kwadongosolo kumakhala kochepa.Chifukwa dera limachepetsa voteji kudzera m'ma resistors, limasokonezedwa kwambiri ndi kusintha kwa magetsi a gridi, kotero sikophweka kupanga magetsi oyendetsedwa bwino, ndipo mphamvu yochepetsera magetsi imagwiritsa ntchito gawo lalikulu la mphamvu.
5. RCC potsika-pansi kusintha magetsi:
Ubwino wa mtundu uwu wa magetsi a LED ndi njira yokhazikika yokhazikika komanso yogwira ntchito kwambiri, yomwe nthawi zambiri imatha kukhala 70% mpaka 80%, ndipo imagwiritsidwa ntchito kwambiri.Zoyipa zazikulu ndikuti kusintha pafupipafupi kumakhala kovuta kuwongolera, kuchuluka kwa voltage ripple coefficient ndi yayikulu, ndipo kusinthasintha kwake kumakhala kovutirapo pakachitika zachilendo.
6. PWM yoyendetsedwa ndi magetsi osinthira:
Pakalipano, magetsi a LED opangidwa ndi ulamuliro wa PWM ndi abwino chifukwa magetsi otulutsa kapena omwe alipo pamagetsi osinthika awa ndi okhazikika kwambiri.Mphamvu yotembenuza mphamvu ndiyokwera kwambiri, nthawi zambiri imakhala yokwera kwambiri mpaka 80% ~ 90%, ndipo voteji ndi zomwe zikuchitika pano ndizokhazikika kwambiri.Njira yopangira magetsi a LED imakhala ndi magawo anayi: kuwongolera ndi kusefa, kukonzanso zotulutsa ndi zosefera, gawo la PWM voliyumu yokhazikika, ndikusintha gawo losintha mphamvu.Kuphatikiza apo, derali lili ndi njira zodzitchinjiriza kwathunthu ndipo ndi mphamvu yodalirika kwambiri.
Zofunikira zisanu ndi zitatu zogwirira ntchito zanthawi zonse voteji magetsi
Malinga ndi malamulo ogwiritsira ntchito magetsi a gridi yamagetsi komanso zomwe zimafunikira pamagetsi amagetsi a LED, izi ziyenera kuganiziridwa posankha ndi kupanga magetsi a LED:
1. Kudalirika kwakukulu, makamaka magetsi oyendetsa galimoto a magetsi a mumsewu wa LED, omwe amaikidwa pamalo okwera kwambiri, zomwe zimapangitsa kukonza kukhala kovuta komanso kokwera mtengo.
2. Ma LED apamwamba kwambiri ndi zinthu zopulumutsa mphamvu, ndipo mphamvu ya magetsi oyendetsa galimoto iyenera kukhala yapamwamba.Izi ndizofunikira makamaka kwa zomangamanga zomwe magetsi amaikidwa mkati mwa nyali.Chifukwa kuwala kowala kwa ma LED kumachepetsa kutentha kwa LED kukuwonjezeka, kutentha kwa LED ndikofunikira kwambiri.Kuchita bwino kwa magetsi kumakhala kwakukulu, mphamvu zake zimakhala zochepa, ndipo kutentha komwe kumapangidwa mu nyali kumakhala kochepa, komwe kumachepetsanso kutentha kwa nyali.Ndizopindulitsa kuchedwetsa kuwonongeka kwa kuwala kwa LED.
3.High power factor Power factor ndiye chofunikira pa gridi pakunyamula.Nthawi zambiri, palibe zizindikiro zovomerezeka pazida zamagetsi zomwe zili pansi pa 70 watts.Ngakhale mphamvu yochepa ya chipangizo chimodzi chamagetsi chokhala ndi mphamvu yaying'ono sichidzakhala ndi mphamvu zochepa pa gridi yamagetsi, ngati aliyense ayatsa magetsi usiku ndipo mtundu womwewo wa katundu umakhala wochuluka kwambiri, zingayambitse kuipitsa kwakukulu kwa gridi yamagetsi.Kwa magetsi oyendetsa magetsi a 30- mpaka 40-watt LED, akuti pakhoza kukhala zofunikira zina zowonetsera mphamvu za mphamvu posachedwapa.
4.Kuthekera kwa surge chitetezo kwa LED kupirira ma surges ndizovuta, makamaka kuthekera kwake kupirira reverse voltage.Kulimbitsa chitetezo m'derali n'kofunikanso.Magetsi ena a LED amaikidwa panja, monga magetsi amsewu a LED.Chifukwa cha kutsegula kwa grid katundu ndi kulowetsedwa kwa mphezi, mafunde osiyanasiyana adzalowa kuchokera ku grid system, ndipo ma surges ena adzawononga LED.Choncho, magetsi oyendetsa galimoto a LED ayenera kukhala ndi mphamvu yolepheretsa kulowetsedwa kwa opaleshoni ndi kuteteza LED kuti isawonongeke.
5. Ntchito yachitetezo Kuphatikiza pa ntchito zodzitchinjiriza zamagetsi, ndikwabwino kuwonjezera kutentha kwa LED koyipa pazotulutsa zomwe zikuchitika kuti kutentha kwa LED kusakhale kokwera kwambiri.
6. Pankhani ya chitetezo, ngati nyali imayikidwa kunja, dongosolo lamagetsi liyenera kukhala lopanda madzi komanso lopanda chinyezi, ndipo chipinda chakunja chiyenera kukhala chopanda kuwala.
7. Moyo wamagetsi oyendetsa galimoto uyenera kufanana ndi moyo wa LED.
8. Ayenera kutsatira malamulo achitetezo ndi zofunikira zofananira ndi ma elekitiroma.
Pamene kugwiritsa ntchito kwa LED kukuchulukirachulukira, ntchito ya magetsi oyendetsa galimoto ya LED idzakhala yoyenera kwambiri pa zofunikira za LED.
Pamafunso azinthu, chonde onanitsamba mankhwala, nanunso mwalandiridwaLumikizanani nafekudzera m'mawu omwe ali pansipa, tidzakuyankhani pasanathe masiku 24.
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