Hloov hom fais fab mov pulse pawg tsuj
Hloov hom fais fab mov tuaj yeem siv ib tus zuj zus raws li cov khoom siv hluav taws xob, tab sis ntau zaus hloov hom hluav taws xob siv hluav taws xob yog siv los ua ib feem nrog txhua yam khoom siv hluav taws xob. Yog li ntawd, cov khoom siv hluav taws xob hloov hluav taws xob muaj nws tus kheej tshwj xeeb, thiab EMC kev ua haujlwm ntawm kev hloov hluav taws xob muaj feem cuam tshuam nrog kev siv ib txwm siv ntawm txhua yam khoom siv hluav taws xob. Vim li no, cov khoom siv hluav taws xob sib raug zoo ntawm cov khoom siv hluav taws xob yog qhov zoo lossis qhov tsis zoo, thawj qhov uas yuav tsum tau saib ntawm kev hloov hluav taws xob hloov hluav taws xob electromagnetic compatibility kev ua tau zoo yog qhov zoo lossis tsis zoo.
① Pulse pab pawg tiv thaiv ntawm kev hloov fais fab mov
Nyob rau hauv cov nqe lus ntawm switching fais fab mov, tawm hauv ib sab lub input lim ntawm switching fais fab mov, qhov cuam tshuam ntawm switching fais fab mov kab nws tus kheej ntawm lub pulse pab pawg neeg cuam tshuam yog heev tsawg, yog vim li cas mas vim hais tias cov ntsiab lus ntawm lub pulse pab cuam cuam tshuam yog ib tug. high-frequency common-mode cuam tshuam, thiab lub lim capacitance nyob rau hauv txoj kab ntawm switching fais fab mov yog aimed ntawm kev tsuj ntawm tsawg zaus sib txawv-hom cuam tshuam thiab qhov chaw ntawm electrolytic capacitors rau lub ripple suppression ntawm lub switching fais fab mov nws tus kheej tsis. txaus, tsis hais txog cov khoom sib haum xeeb. Electrolytic capacitors tsis txaus los cuam tshuam cov ripple ntawm lub zog hloov pauv ntawm nws tus kheej, tsis hais txog kev cuam tshuam ntawm kev sib raug zoo ntawm pawg mem tes cuam tshuam ntau dua 60MHz. Yog li ntawd, thaum soj ntsuam cov pulse pawg waveforms ntawm cov tswv yim thiab cov zis ntawm lub zog hloov pauv nrog oscilloscope, tsis muaj qhov pom tseeb ntawm qhov cuam tshuam.
Xav tias pab pawg mem tes cuam tshuam yog hom hom hauv qhov xwm txheej.
Raws li qhov kev hloov pauv hluav taws xob muaj kev txhawj xeeb, kev siv cov ntxaij lim dej tawm tswv yim yog qhov tseem ceeb rau kev hloov hluav taws xob hloov hluav taws xob txhawm rau txhawm rau txhawm rau ** pab pawg pulse cuam tshuam.
Qhov thib ob, tus tsim ntawm lub high-frequency transformer nyob rau hauv lub switching fais fab mov kab, tshwj xeeb tshaj yog cov kev siv ntawm shielding ntsuas, muaj ib tug tej yam inhibiting nyhuv ntawm cov mem tes pab pawg neeg cuam tshuam.
Ib zaug ntxiv, qhov hloov hluav taws xob hloov hluav taws xob thawj lub voj voog thiab lub voj voog thib ob ntawm qhov sib txuas ntawm qhov sib txuas, tuaj yeem yog los ntawm thawj lub voj voog mus rau theem nrab ntawm qhov kev cuam tshuam ntawm hom kev cuam tshuam rov qab mus rau thawj lub voj voog los muab txoj hauv kev, ntawm qhov
Nws kuj muaj qee yam kev cuam tshuam rau kev cuam tshuam ntawm pab pawg pulse.
Thaum kawg, ntxiv ib hom lim lim (hom hom inductor thiab hom hom capacitor) rau cov khoom siv hluav taws xob hloov pauv tuaj yeem ua lub luag haujlwm hauv kev cuam tshuam cov pab pawg mem tes.
Tsis tas li ntawd, qhov hloov hluav taws xob hloov hluav taws xob nws tus kheej tsis muaj qhov cuam tshuam rau cov pab pawg mem tes cuam tshuam, tab sis yog tias qhov hloov hluav taws xob hloov hluav taws xob tsis zoo, nws tuaj yeem ua rau muaj kev cuam tshuam ntawm pawg pulse cuam tshuam rau lub zog hloov hluav taws xob. Tshwj xeeb, qhov xwm txheej ntawm pab pawg mem tes cuam tshuam yog qhov sib xyaw ua ke ntawm kev cuam tshuam thiab hluav taws xob cuam tshuam, txawm tias cov khoom siv lim tau siv los txhawm rau cuam tshuam cov khoom cuam tshuam, tab sis lub hav zoov ntawm radiated cuam tshuam nyob ib ncig ntawm cov kab sib txuas tseem muaj, tseem tuaj yeem nkag mus los ntawm kev cuam tshuam ntawm cov khoom cuam tshuam. lub switching fais fab mov ** layout (hloov fais fab mov thawj los yog theem nrab Circuit Court layout yog qhib dhau lawm, tsim ntawm "loj lub nplhaib kav hlau txais xov (thaum thawj los yog theem nrab Circuit Court layout ntawm lub switching fais fab mov yog qhib dhau lawm, tsim "loj kav hlau txais xov loj "), hnov cov hluav taws xob tivthaiv ntawm pab pawg mem tes cuam tshuam, thiab yog li cuam tshuam rau kev tiv thaiv kev ua haujlwm ntawm tag nrho cov khoom siv.
② Pulse pawg tiv thaiv kev hloov pauv cov khoom siv hluav taws xob, thiab cov ntsiab lus kom nco ntsoov hauv pab pawg pulse cov khoom siv hluav taws xob
Thaum lub hwj chim mov sab ntawm cov khoom siv hluav taws xob pulse pab pawg tiv thaiv kev ntsuas, peb yuav tsum tau them sai sai rau lub hwj chim ntawm kev tiv thaiv kev cuam tshuam ntawm cov khoom siv, tab sis peb yuav tsum tsis txhob hnov qab tias lub ntsiab lus ntawm pab pawg mem tes cuam tshuam yog qhov tseeb tias cov conductive thiab radiated interference composite, yog li cov khoom siv hluav taws xob ib feem ntawm kev ntsuas tom qab tsis ua tiav qhov kev xeem, peb yuav tsum xav txog nws, nws yuav tsis yog lwm txoj hauv kev ua kom muaj kev cuam tshuam rau hauv cov khoom siv, tshwm sim los ntawm cov khoom siv hluav taws xob kab pulse pawg. kev tiv thaiv kab mob ua tsis tiav qhov kev xav tsis tseeb.
