Taw qhia rau kev hloov fais fab mov module DC chopper ntawm switching fais fab mov module
Taw qhia
Hloov cov khoom siv hluav taws xob tuaj yeem muab faib ua ob pawg: AC / DC thiab DC / DC. DC / DC converters yog tam sim no modular, thiab cov qauv 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. Txawm li cas los xij, Modularization ntawm AC / DC, vim nws tus kheej cov yam ntxwv, ntsib cov teeb meem nyuaj thiab txheej txheem tsim khoom hauv cov txheej txheem ntawm modularization.
DC chopper
DC / DC hloov dua siab tshiab hloov 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 qhov dav dav ntawm cov mem tes modulation, Ts tseem tsis hloov thiab tuj hloov (universal); lwm qhov yog hom kev hloov pauv zaus, tuj tseem tsis hloov pauv thiab Ts hloov pauv (yooj yim ua rau cuam tshuam). Nws cov circuits tshwj xeeb poob rau hauv pawg hauv qab no:
(1) Buck Circuit Court - kauj ruam-down chopper, nws cov zis nruab nrab voltage Uo yog me dua lub input voltage Ui thiab muaj tib polarity.
(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 - ib tug phaw los yog boost chopper uas nws cov zis nruab nrab voltage Uo yog ntau dua los yog tsawg tshaj qhov input voltage Ui, nrog opposite polarity thiab inductive kis tau tus mob.
(4) Cuk Circuit Court - ib tug phaw los yog boost chopper uas cov zis nruab nrab voltage Uo yog ntau dua los yog tsawg tshaj qhov input voltage UI, nrog opposite polarity thiab capacitive kis tau tus mob.
AC / DC
AC / DC converts AC rau DC. Lub zog ntws kev taw qhia tuaj yeem yog bidirectional. Lub hwj chim ntws los ntawm lub hwj huam mov mus rau lub load yog hu ua "rectification", thiab lub zog khiav ntawm lub load rov qab mus rau lub hwj chim mov yog hu ua "active inversion". Lub tswv yim ntawm AC / DC converter yog 50/60Hz alternating tam sim no, uas yuav tsum tau kho thiab lim, yog li ib tug kuj 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 yog EMC lim thiab siv cov khoom ua 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 hluav taws xob siab, thiab qhov loj tam sim no Hloov ua haujlwm ua rau nws nyuaj dua los daws EMC electromagnetic compatibility teeb meem, uas tseem tso siab rau cov kev xav tau siab rau kev tsim cov khoom siv hluav taws xob sab hauv high-density installation circuits. Rau tib lub laj thawj, high-voltage thiab high-tam sim no keyboards nce lub hwj chim noj thiab txwv AC / DC converter modularization txheej txheem, yog li lub hwj chim system optimization tsim txoj kev yuav tsum tau saws kom ua tiav ib qho kev txaus siab nyob rau hauv nws ua hauj lwm efficiency.
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 quadrant, peb quadrant thiab plaub quadrant.
