Grouping hloov cov khoom siv hluav taws xob
Tib neeg lub zog hloov hluav taws xob thev naus laus zis thev naus laus zis yog los tsim cov khoom siv hluav taws xob muaj feem cuam tshuam thiab hloov pauv zaus hloov tshuab tib lub sijhawm. Ob leeg txhawb ib leeg los txhawb kev hloov pauv hloov hluav taws xob los ua lub teeb, me me, nyias, tsis tshua muaj suab nrov, muaj kev ntseeg siab, kev loj hlob ntawm cov kev taw qhia los tiv thaiv jamming. Hloov cov khoom siv hluav taws xob tuaj yeem muab faib ua ob pawg: AC / DC thiab DC / DC. DC / DC converter tam sim no tau hloov kho, thiab cov txheej txheem tsim tshuab thiab cov txheej txheem tsim khoom tau paub tab thiab tsim qauv hauv tsev thiab txawv teb chaws, thiab tau lees paub los ntawm cov neeg siv khoom. Lub modularization ntawm AC / DC, vim nws tus kheej cov yam ntxwv, ntsib ntau nyuaj technical thiab txheej txheem tsim teeb meem nyob rau hauv tus txheej txheem ntawm modularization. Cov qauv thiab cov yam ntxwv ntawm ob hom kev siv hluav taws xob hloov pauv tau piav qhia hauv qab no.
Kev hloov pauv DC / DC
DC / DC hloov dua siab tshiab yog hloov pauv DC qhov hluav taws xob ruaj khov rau hauv qhov sib txawv DC voltage, tseem hu ua DC chopping. Muaj ob hom kev ua haujlwm ntawm lub tshuab chopper, ib qho yog pulse width modulation mode, Ts tsis hloov pauv, thiab tus tuj hloov pauv (ntau), thiab lwm yam yog hom zaus hloov pauv, tuj tsis hloov, thiab Ts hloov pauv (yooj yim los tsim kev cuam tshuam).
Nws cov Circuit Court tshwj xeeb muaj xws li cov hauv qab no:
(1) Buck Circuit Court - kauj ruam-down chopper, nws cov zis nruab nrab voltage Uo tsawg tshaj li qhov input voltage Ui, thiab polarity yog tib yam.
(2) Boost Circuit Court - boost chopper, nws cov zis nruab nrab voltage Uo yog ntau tshaj qhov input voltage Ui, thiab polarity yog tib yam.
(3) Buck-Boost Circuit Court - phaw los yog boost chopper, nws cov zis nruab nrab voltage Uo yog ntau dua los yog tsawg tshaj qhov input voltage Ui, polarity yog opposite, thiab inductance yog kis.
(4) Cuk Circuit Court - nplawm los yog boost chopper, nws cov zis nruab nrab voltage Uo yog ntau dua los yog tsawg tshaj qhov input voltage UI, lub polarity yog opposite, thiab lub capacitance kis tau tus mob. Niaj hnub no cov tshuab hloov pauv tau ua kom muaj txiaj ntsig zoo hauv DC / DC. Ntau yam ECI soft-switching DC / DC converters tsim thiab tsim los ntawm American VICOR lub tuam txhab muaj lub zog siab tshaj plaws ntawm 300W, 600W, 800W, thiab lwm yam, thiab lub zog sib xws yog (6, 2, 10, 17) W / cm3, qhov ua tau zoo yog (80-90) feem pua . Qhov tseeb high-frequency switching power supply module RM series siv soft switching technology launched los ntawm Nyiv NemicLambda Company muaj qhov hloov zaus ntawm (200 ~ 300) kHz thiab lub zog ceev ntawm 27 W / cm3. Tetky diode), qhov ua tau zoo ntawm tag nrho cov Circuit Court yog nce mus rau 90 feem pua.
Kev hloov pauv AC / DC
AC / DC hloov dua siab tshiab yog hloov AC rau DC, thiab nws lub zog ntws tuaj yeem ua ob txoj kev. Lub hwj chim ntws los ntawm lub hwj chim qhov chaw mus rau lub load yog hu ua "rectification", thiab lub zog khiav ntawm lub load rov qab mus rau lub hwj chim qhov chaw yog hu ua "active inverter". Lub tswv yim ntawm AC / DC converter yog 50 / 60Hz alternating tam sim no. Vim hais tias nws yuav tsum tau kho thiab lim, ib qho loj lim capacitor yog qhov tseem ceeb. Nyob rau tib lub sijhawm, vim yog cov qauv kev nyab xeeb (xws li UL, CCEE, thiab lwm yam) thiab EMC cov lus qhia kev txwv (xws li IEC, FCC, CSA), AC input sab yuav tsum ntxiv EMC lim thiab siv cov khoom uas ua tau raws li cov qauv kev nyab xeeb, uas txwv qhov miniaturization ntawm AC / DC fais fab mov. Tsis tas li ntawd, vim muaj qhov siab zaus, qhov siab voltage, thiab tam sim no loj Qhov kev hloov pauv ua rau nws nyuaj dua los daws qhov teeb meem ntawm EMC electromagnetic compatibility, uas tseem tso siab rau cov kev xav tau siab rau kev tsim cov khoom siv hauv high-density installation circuits. Rau tib lub laj thawj, qhov hluav taws xob siab thiab cov hloov pauv siab tam sim no nce lub zog siv thiab txwv AC / DC converter modularization txheej txheem, yog li nws yog ib qho tsim nyog yuav tsum tau txais kev siv lub zog ua kom zoo tshaj plaws tsim qauv kom nws cov haujlwm ua haujlwm tau ncav cuag qee qhov kev txaus siab.
Kev hloov pauv AC / DC tuaj yeem muab faib ua ib nrab-yoj Circuit Court thiab puv-yoj Circuit Court raws li txoj kev xaim ntawm lub voj voog. Raws li tus naj npawb ntawm cov theem fais fab, nws tuaj yeem muab faib ua ib theem, peb theem thiab ntau theem. Raws li kev ua haujlwm quadrant ntawm lub voj voog, nws tuaj yeem muab faib ua ib lub quadrant, ob lub quadrant, peb quadrant, thiab plaub quadrant.
Lub hauv paus ntsiab lus ntawm kev hloov fais fab mov
Yooj yim muab, lub hauv paus ntsiab lus ua haujlwm ntawm lub zog hloov hluav taws xob yog:
1. AC fais fab input yog rectified thiab lim rau DC;
2. Lub raj hloov pauv yog tswj los ntawm lub zog siab PWM (pulse width modulation) lub teeb liab, thiab DC ntxiv rau lub hauv paus ntawm kev hloov pauv hloov pauv;
3. Qhov thib ob sab ntawm lub tshuab hloov pauv induces ib tug high-frequency voltage, uas yog rectified thiab lim los muab lub load;
4. Cov khoom tso tawm tau rov qab mus rau qhov kev tswj xyuas los ntawm ib lub voj voog los tswj lub voj voog PWM kom ua tiav lub hom phiaj ntawm cov zis ruaj khov.
