PFC siab tswj hwm switching fais fab mov

PFC yog lub ntsiab lus ntawm kev kho qhov fais fab, uas feem ntau yog siv los piav qhia txog kev siv hluav taws xob zoo ntawm cov khoom siv hluav taws xob. Qhov siab dua ntawm lub zog, qhov siab dua ntawm kev siv hluav taws xob zoo.

Muaj ob hom PFC: passive PFC thiab active PFC. Passive PFC feem ntau siv txoj kev them nyiaj inductance los txo qhov sib txawv ntawm qhov tam sim no thiab voltage ntawm AC input kom txhim kho lub zog fais fab, tab sis lub zog fais fab ntawm passive PFC tsis siab heev thiab tsuas yog ncav cuag 0.7 ~ 0.8; Active PFC yog tsim los ntawm inductance, capacitance thiab cov khoom siv hluav taws xob, nws tuaj yeem ncav cuag txog 0.99. Nws me me thiab tuaj yeem ua tiav lub zog fais fab siab, tab sis tus nqi siab dua li passive PFC.

PFC feem ntau siv ua lub zog fais fab hauv PC, thiab PFC muaj cov yam ntxwv hauv qab no tsawg kawg:

1) Lub zog hluav taws xob tuaj yeem yog los ntawm 90V txog 270V;

2) Qhov fais fab ntawm kab yog siab dua 0.98, thiab muaj qhov zoo ntawm kev poob qis thiab kev ntseeg siab siab;

3) Lub PFC ntawm IC kuj tseem siv tau ua lub zog pabcuam, yog li lub transformer standby feem ntau tsis tas yuav siv rau hauv kev siv lub voj voog PFC nquag;

4) Cov zis tsis hloov pauv nrog lub zog hluav taws xob nkag, yog li qhov hluav taws xob tso zis ruaj khov heev tuaj yeem tau txais;

5) Qhov tso zis DC voltage ripple ntawm active PFC yog me heev thiab muaj sine wave ntawm 100Hz / 120Hz (ob npaug ntawm lub zog zaus). Yog li ntawd, lub hwj chim muab hluav taws xob siv active PFC tsis tas yuav siv lub capacitor lim dej loj.

PFC nquag yog tsim los ntawm inductance, capacitance thiab cov khoom siv hluav taws xob. Nws muaj qhov ntim me me. Nws kho qhov tam sim no waveform los ntawm IC tshwj xeeb los them qhov sib txawv ntawm tam sim no thiab voltage. PFC nquag tuaj yeem ua tiav qhov muaj zog siab - feem ntau ntau dua 98%, tab sis tus nqi kuj tseem siab. Tsis tas li ntawd, PFC nquag kuj tuaj yeem siv ua lub zog pabcuam. Yog li ntawd, thaum siv lub voj voog PFC nquag, lub transformer standby feem ntau tsis tas yuav tsum muaj, thiab qhov ripple ntawm qhov tso zis DC voltage ntawm PFC nquag yog me heev. Lub zog no tsis tas yuav siv lub capacitor lim dej loj.

Peb nyuam qhuav tso tawm 2000W thiab 3000W switching power supplies nrog PFC. Tus nqi zoo heev. Nws pheej yig dua li cov khoom siv fais fab tib yam hauv khw, thiab kev ua haujlwm ruaj khov heev. Yog tias koj xav paub ntxiv, thov hu rau peb. Ua tsaug!