Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub laub-rub hloov hom fais fab mov
Lub rectified tso zis laub-rub transformer switching fais fab mov, vim hais tias ob switching hlab ua hauj lwm sib hloov, yog sib npaug rau cov zis fais fab mov ntawm ob switching fais fab mov nyob rau tib lub sij hawm, thiab nws tso zis hwj chim yog kwv yees li ob npaug ntawm cov zis zog ntawm ib tug switching zog. muab. Yog li ntawd, lub laub-rub transformer hloov fais fab mov muaj lub zog tso zis ntau thiab ua haujlwm siab. Tom qab choj rectification los yog tag nrho-yoj rectification, tsuas yog ib tug me me lim inductor thiab capacitor, thiab cov zis voltage ripple yuav tsawg heev.
Nyob rau hauv lub laub-rub Circuit Court, ob lub keyboards S1 thiab S2 tau muab hloov pauv, tsim AC voltages nrog cov theem sib txawv ntawm ob qho kawg ntawm windings N1 thiab N'1. Hloov lub voj voog lub luag haujlwm tuaj yeem hloov qhov tso zis voltage. Thaum S1 qhib, lub diode VD1 nyob rau hauv lub xeev, thiab tam sim no ntawm inductor L maj mam nce. Thaum S2 qhib, lub diode VD2 nyob rau hauv lub xeev, thiab tam sim no ntawm inductor L kuj maj mam nce. Thaum ob lub keyboards raug kaw, ob qho tib si VD1 thiab VD2 nyob rau hauv lub xeev, txhua qhov sib koom ib nrab ntawm tam sim no. Lub ncov voltage endured los ntawm S1 thiab S2 nyob rau hauv lub off-lub xeev yog 2 zaug Ui. S1 thiab S2 tau qhib rau tib lub sijhawm, uas yog sib npaug rau luv luv Circuit Court ntawm thawj sab winding ntawm transformer, yog li ob lub keyboards yuav tsum zam kom tsis txhob qhib tib lub sijhawm. Lub voj voog ua haujlwm ntawm txhua qhov hloov pauv tsis tuaj yeem tshaj 50%, thiab yuav tsum muaj qhov chaw tuag.
Txij li thaum ob qho kev tswj hloov K1 thiab K2 nyob rau hauv lub laub-rub transformer switching fais fab mov ua hauj lwm sib hloov, nws cov zis voltage waveform yog symmetrical, thiab lub switching fais fab mov muab fais fab tso zis rau lub load thoob plaws hauv lub sij hawm ua hauj lwm. Yog li ntawd, nws cov zis tam sim no teb instantaneously. Qhov ceev yog siab heev thiab cov yam ntxwv ntawm cov zis voltage yog zoo heev. Push-rub transformer switching fais fab mov yog lub zog hloov hluav taws xob nrog kev siv hluav taws xob siab tshaj plaws ntawm tag nrho cov khoom siv hluav taws xob hloov. Nws tseem tuaj yeem tswj tau lub hwj chim loj loj txawm tias thaum qhov hluav taws xob input tsawg heev, yog li thawb-rub transformer hloov fais fab mov yog dav siv hauv cov ntawv siv hluav taws xob tsawg. Input voltage rau DC / AC inverter, los yog DC / DC converter Circuit Court.
Tom qab lub laub-rub hloov fais fab mov undergoes choj rectification los yog tag nrho-yoj rectification, lub voltage pulsation coefficient Sv thiab tam sim no pulsation coefficient Si ntawm cov zis voltage yog tsawg heev, thiab tsuas yog ib tug me me nqi zog cia lim capacitor los yog lub zog cia lim inductor yog. xav tau. Qhov tso zis hluav taws xob nrog me me voltage ripple thiab tam sim no ripple tuaj yeem tau txais. Yog li ntawd, lub laub-rub switching fais fab mov yog ib tug switching fais fab mov nrog zoo heev output voltage yam ntxwv.
Tsis tas li ntawd, lub transformer ntawm lub laub-rub hloov fais fab mov muaj bipolar magnetic polarization. Qhov ntau ntawm kev sib nqus induction hloov yog ntau tshaj ob zaug ntawm unipolar magnetic polarization, thiab cov tub ntxhais ntawm lub transformer tsis tas yuav tawm hauv qhov sib txawv ntawm huab cua. Yog li ntawd, qhov kev coj ntawm cov tub ntxhais ntawm lub laub-rub lub zog hloov pauv hloov pauv yog qhov sib nqus ntau zaus ntau dua li qhov sib nqus permeability ntawm cov tub ntxhais ntawm unipolar magnetically polarized rau pem hauv ntej lossis thim rov qab hloov hluav taws xob transformer; Nyob rau hauv txoj kev no, tus naj npawb ntawm cov thawj thiab theem nrab coil tig ntawm lub laub-rub lub zog hloov pauv hloov pauv yog piv rau cov unipolar magnetically polarized transformer. Tus naj npawb ntawm coil tig ntawm theem yog ntau tshaj ob zaug tsawg dua. Yog li ntawd, qhov to thiab tooj liab kuj poob ntawm lub laub-rub lub zog hloov pauv hloov pauv me dua li ntawm unipolar magnetic polarization transformer, thiab lub zog hloov hluav taws xob muaj kev ua haujlwm siab.
Nyob rau hauv lub laub-rub switching conversion circuit, lub zog hloov dua siab tshiab yog tswj alternated los ntawm ob lub raj. Thaum tib lub zog tso tawm, qhov tam sim no tsuas yog ib nrab ntawm qhov kawg ntawm ib qho kawg hloov hluav taws xob xa hluav taws xob, yog li qhov kev hloov pauv tau txo qis thiab kev ua haujlwm tau zoo dua.
