(A) Lub hauv paus ntsiab lus ntawm kev hloov hluav taws xob hloov
1.1 Input Circuit Court
Linear lim circuit, surge tam sim no tiv thaiv Circuit Court, rectifier circuit.
Muaj nuj nqi: Hloov cov input grid AC fais fab mov rau hauv DC input fais fab mov ntawm switching fais fab mov uas ua tau raws li qhov yuav tsum tau muaj.
1.1.1 Linear filter circuit
Txhawb kev sib haum xeeb thiab suab nrov
1.1.2 Surge filter circuit
Tshem tawm surge tam sim no los ntawm daim phiaj
1.1.3 Rectifier Circuit Court
Konvertiere AC in HLB
Muaj ob hom: capacitor input type thiab choke coil input type. Cov khoom siv hluav taws xob hloov pauv feem ntau yog yav dhau los
1.2 Hloov Circuit Court
Muaj switching circuit, tso zis rho tawm (converter) Circuit Court, thiab lwm yam. Nws yog lub ntsiab channel rauswitching fais fab movkev hloov dua siab tshiab, thiab ua tiav qhov kev hloov pauv hloov pauv thiab cov zis ntawm lub zog hluav taws xob waveform nrog lub zog.
Hloov lub hwj chim raj ntawm qib no yog nws cov khoom siv tseem ceeb.
1.2.1 Hloov Circuit Court
Tsav hom: tus kheej zoo siab, sab nraud zoo siab
Conversion Circuit Court: cais, tsis cais, resonant
Cov khoom siv fais fab: Feem ntau siv yog GTR, MOSFET, IGBT
Modulation mode: PWM, PFM, and hybrid. PWM feem ntau yog siv.
1.2.2 Converter tso zis
Muab faib ua ncej-dawb thiab ncej-nrog. Tsis muaj ncej yuav tsum tau rau ib nrab-yoj rectification thiab tam sim no-doubler rectification. Ncej yuav tsum tau ua kom puv-yoj.
1.3 Tswj Circuit Court
Muab modulated rectangular pulses rau tsav Circuit Court los kho qhov tso zis voltage.
Kev siv hluav taws xob: Muab kev siv hluav taws xob. Xws li kev sib txuas lus LM358, AD589, series siv AD581, REF192, thiab lwm yam.
Sampling circuit: Siv tag nrho los yog ib feem ntawm cov zis voltage.
Kev sib piv amplification: Sib piv cov qauv teeb liab nrog cov teeb liab siv los tsim cov teeb liab yuam kev rau kev tswj hwm lub hwj chim PM Circuit Court.
V / F hloov dua siab tshiab: Hloov qhov yuam kev voltage teeb liab mus rau hauv lub teeb liab zaus.
Oscillator: Tsim cov nthwv dej ntau zaus oscillation
Base tsav Circuit Court: Hloov cov teeb liab oscillation modulated rau hauv lub teeb liab tswj kom tsim nyog tsav lub hauv paus ntawm lub raj hloov.
1.4 Tawm Circuit Court
Rectification thiab filtering
Rectify cov zis voltage rau hauv pulsating DC thiab smooth nws mus rau hauv ib tug tsawg-ripple DC voltage. Tso zis rectification technology tam sim no muaj ib nrab-yoj, puv-yoj, lub zog tas li, tam sim no ob npaug, synchronous thiab lwm txoj kev kho.
(B) Kev tshuaj xyuas ntau yam khoom siv hluav taws xob topological
2.1 Buck converter
Buck circuit: Buck chopper, input thiab output polarity yog tib yam.
Txij li thaum volt-thib ob cov khoom ntawm inductor nqi thiab tawm yog sib npaug zos nyob rau hauv tsis tu ncua, input voltage Ui, tso zis voltage Uo; yog li ntawd:
(Ui-Uo)ton=Uotoff
Uiton-Uoton=Uo*toff
Ui*ton=Uo(ton+toff)
Uo/Ui=ton/(ton+toff)=▲
Ntawd yog, qhov kev sib raug zoo ntawm cov input thiab output voltage yog:
Uo/Ui = ▲ (lub voj voog ua haujlwm)
Buck circuit topology
Thaum lub tshuab hluav taws xob tau qhib, lub zog hluav taws xob tau lim los ntawm L inductor thiab C capacitor los muab tam sim no rau qhov kawg load; Thaum lub tshuab hluav taws xob raug kaw, L inductor txuas ntxiv ntws los ntawm lub diode kom cov load tam sim no tsis tu ncua. Cov zis hluav taws xob yuav tsis tshaj qhov hluav taws xob input voltage vim lub luag haujlwm lub voj voog.
2.2 Boost Converter
Boost circuit: boost chopper, input thiab output polarity yog tib yam.
Siv tib txoj kev, raws li lub hauv paus ntsiab lus hais tias qhov kev them nyiaj thiab tso tawm volt-thib ob ntawm inductor L yog sib npaug hauv lub xeev khov kho, qhov kev sib raug zoo ntawm qhov hluav taws xob tuaj yeem muab tau: Uo / Ui = 1 / (1-▲)
Boost Circuit Court topology
Lub raj xa hluav taws xob Q1 thiab lub nra ntawm lub voj voog no txuas nrog rau tib lub sijhawm. Thaum lub raj hloov pauv tau qhib, qhov tam sim no dhau los ntawm inductor L1 kom du nthwv dej, thiab cov khoom siv hluav taws xob them nqi inductor L1. Thaum lub qhov hluav taws xob hloov hluav taws xob raug muab tua, lub inductor L tawm mus rau lub nra thiab lub hwj chim, thiab cov zis hluav taws xob yuav yog qhov input voltage Ui + UL, yog li nws muaj kev txhawb zog.
2.3 Flyback Converter
Buck-Boost Circuit: Boost/Buck Chopper, input thiab output polarity yog opposite, thiab inductor kis tau.
Voltage kev sib raug zoo: Uo / Ui = -▲ / (1-▲)
Buck-Boost Circuit Court Topology
Thaum S yog nyob rau, lub load fais fab mov tsuas yog them tus inductor. Thaum S tawm, cov khoom siv hluav taws xob tawm mus rau lub nra los ntawm inductor kom ua tiav lub zog xa mus.
Yog li ntawd, L inductor ntawm no yog ib qho khoom siv rau kev xa hluav taws xob.
(C) Daim ntawv thov teb
Lub tshuab hluav taws xob hloov hluav taws xob muaj qhov zoo ntawm kev ua haujlwm siab, me me, lub teeb yuag, thiab cov khoom siv hluav taws xob ruaj khov, yog li nws tau siv dav hauv kev sib txuas lus, khoos phis tawj, kev lag luam automation, khoom siv hauv tsev thiab lwm yam haujlwm. Piv txwv li, nyob rau hauv lub computer teb, lub switching fais fab mov tau dhau los ua lub ntsiab ntawm lub computer fais fab mov, uas muaj peev xwm ua kom ruaj khov ntawm cov khoom siv computer; nyob rau hauv lub tshav pob ntawm lub zog tshiab, lub zog hloov hluav taws xob kuj tseem ua lub luag haujlwm tseem ceeb ua lub cuab yeej uas tuaj yeem hloov pauv lub zog ruaj khov.
Nyob rau hauv luv luv, lub switching fais fab mov Circuit Court yog ib tug npaum thiab txhim khu kev qha hwj chim conversion circuit. Nws txoj haujlwm ua haujlwm feem ntau yog los hloov lub zog hluav taws xob nkag mus rau hauv qhov chaw ruaj khov thiab txhim khu kev qha DC lub zog tso tawm los ntawm kev hloov pauv hloov pauv hloov pauv thiab kev hloov kho kom zoo.
Post lub sij hawm: Oct-10-2024