Yuav ua li cas kom paub meej qhov kev ntseeg ntawm LED fais fab mov
1. Ob peb daim ntawv qhia piav qhia txog qhov cuam tshuam ntawm input voltage ntawm cov zis voltage
(1) Voltage stabilization coefficient
① Tsis tshua muaj voltage stabilization coefficient K
Thaum lub load tseem nyob tas li, qhov sib piv ntawm qhov tso zis DC voltage hloov △ Uo ntawm cov tswj fais fab mov mus rau lub input grid voltage hloov △ Ui, piv txwv li K=△ Uo/△ Ui.
② Tus txheeb ze voltage stabilization coefficient S
Thaum lub load tseem nyob tas li, qhov piv ntawm cov txheeb ze hloov △ Uo / Uo ntawm cov zis DC voltage Uo ntawm tus regulator rau tus txheeb ze hloov △ Ui / Ui ntawm input grid voltage Ui yog denoted li S=△ Uo /Uo/△ Ui/Ui.
(2) Daim phiaj hloov kho tus nqi
Thaum cov input grid voltage hloov los ntawm +/-10% los ntawm tus nqi ntsuas, qhov txheeb ze hloov pauv hauv qhov tso zis hluav taws xob ntawm cov khoom siv hluav taws xob tswj tau qee zaum qhia txog tus nqi tiag.
(3) Voltage stability
Qhov voltage stability ntawm lub voltage regulator yog txhais raws li tus txheeb ze hloov nyob rau hauv cov zis voltage △ Uo / Uo (feem pua) tshwm sim los ntawm qhov variation ntawm input voltage nyob rau hauv lub teev ntau yam thaum tuav lub load tam sim no ntawm tej nqi nyob rau hauv lub rated range.
2. Ob peb daim ntawv qhia txog kev cuam tshuam ntawm kev thauj khoom ntawm cov zis hluav taws xob
(1) Kev tswj hwm tus nqi (tseem hu ua tus nqi tswj tam sim no)
Qhov siab tshaj plaws txheeb ze hloov pauv hauv cov zis hluav taws xob thaum lub sijhawm thauj khoom tam sim no hloov ntawm xoom mus rau nws cov nqi siab tshaj plaws ntawm qhov ntsuas hluav taws xob hluav taws xob, feem ntau qhia tias feem pua thiab qee zaum yog qhov hloov pauv kiag li.
(2) Cov zis tsis kam (tseem hu ua qhov sib npaug sab hauv lossis sab hauv tsis kam)
Ntawm qhov ntsuas hluav taws xob hluav taws xob, yog tias qhov tso zis hluav taws xob hloov pauv △ Uo vim qhov kev hloov pauv tam sim no △ IL, cov zis tsis kam yog Ro=| △ Uo/△ IL|Ω.
3. Ob peb daim ntawv qhia ntawm ripple voltage
(1) Maximum Ripple Voltage
Tus nqi ntawm cov zis voltage ripple (nrog rau lub suab nrov) ntawm cov zis voltage thiab load tam sim no feem ntau yog qhia raws li qhov siab tshaj plaws los yog muaj txiaj ntsig zoo.
(2) Ripple factor Y (%)
Ntawm qhov ntsuas load tam sim no, qhov piv ntawm tus nqi zoo Urms ntawm cov zis ripple voltage rau cov zis DC voltage Uo yog Y=Umrs/Uox100%.
(3) Ripple voltage suppression piv
Ntawm qhov teev ripple zaus (piv txwv li 50HZ), qhov piv ntawm ripple voltage Ui ~ nyob rau hauv lub input voltage mus rau lub ripple voltage Uo ~ nyob rau hauv cov zis voltage, uas yog, lub ripple voltage suppression ratio=Ui ~ / Uo ~.
