Impembelelo yamandla kwizibane ze-LED

I-Power factor yiparameter ebalulekileyo yezibane ze-LED, nokubaizibane ze-LED ezinokutshajwa kwakhonaokanye izibane ze-LED ezomileyo. Ngoko ke masiqonde ngakumbi ukuba yintoni i-power factor.

1, Amandla
I-power factor ichaza amandla e-Isibane sentloko se-LEDukukhupha amandla asebenzayo. Amandla yindlela yokulinganisa izinga lokudluliselwa kwamandla, kwaye kwiisekethe zeDC yimveliso yevolthi V kunye ne-current A. Kwinkqubo ye-AC, iyinkimbinkimbi ngakumbi: eminye i-AC current ijikeleza kumthwalo, obizwa ngokuba yi-reactance current okanye i-harmonic current, eyenza amandla abonakalayo (i-voltage Volt yi-current Amps) abe makhulu kunamandla angokoqobo. Umahluko phakathi kwamandla abonakalayo kunye namandla angokoqobo ukhokelela kwi-power factor, kwaye i-power factor ilingana nomlinganiselo wamandla angokoqobo kumandla abonakalayo. Ngoko ke amandla angokoqobo kwinkqubo ye-AC alingana namandla axhomekeke kumaxesha amandla anamandla.
Oko kukuthi: amandla = amandla okwenyani / amandla abonakalayo. Amandla ombane kuphela omthwalo othe ngqo ofana nesifudumezi sombane kunye nebhalbhu yesibane yi-1. Umahluko phakathi kwamandla okwenyani kunye namandla abonakalayo ezixhobo ezininzi mncinci kakhulu kwaye awunamsebenzi, ngelixa umahluko phakathi kwezixhobo ezikwaziyo ukwenza izinto ezifana nezibane mkhulu kakhulu kwaye ubalulekile.

2, Amandla abonakalayo
Amandla asebenzayo: imveliso ye-AC voltage kunye ne-AC current. Ngefomyula efana nale: S=UI. Apho i-S ilinganiswe amandla okukhupha kwi-VA (volt-ampere); i-U ilinganiswe amandla okukhupha kwi-V, njenge-220V, 380V, njl.njl.; u-I ulinganiswe amandla okukhupha kwi-A. Amandla abonakalayo anamacandelo amabini: amandla asebenzayo (P) kunye namandla asebenzayo (Q). Amandla asebenzayo abhekisa kwinxalenye yomsebenzi owenziwe ngokuthe ngqo. Umzekelo, ukukhanya, ukujikeleza kwemoto, isekethe ye-elektroniki esebenza. Ngenxa yokuba la mandla abe bubushushu, anokuviwa ngokuthe ngqo ngabantu, ngoko abanye abantu banengcamango, oko kukuthi, amandla asebenzayo njengamandla abonakalayo, ngubani owaziyo ukuba amandla asebenzayo yinxalenye nje ye
Amandla abonakalayo, kunye nefomula: P = Scos θ = UIcosθ = UIF. Apho uP ingamandla asebenzayo kwi-W (watts); uF=cos θ ubizwa ngokuba yi-power factor, kwaye u-θ ngumahluko wesigaba see-voltage currents ezahlukeneyo kumthwalo ongengomgca. Amandla asebenzayo yinxalenye yamandla agcinwe kwisekethe kodwa angasebenzi ngqo, abonakaliswa yifomula: Q = Ssin θ = UIsinθ. Apho u-Q ingamandla asebenzayo kwi-var (ukungabikho).

NgokubaIzibane zentloko ze-LEDkunye nazo zonke ezinye iisekethe ze-elektroniki ezisebenza kwi-voltage ye-DC, akunakwenzeka ukusebenza ngaphandle kombane.