Switching Power Supply System EMC Design Analysis
Nrog rau kev loj hlob sai ntawmhluav taws xobthev naus laus zis, cov khoom siv hluav taws xob tib lub sijhawm kuj mus rau kev sib koom ua ke ntawm kev ua haujlwm, ntim miniaturization kev taw qhia, uas ua rau peb yooj yim heev, tab sis ntau yam khoom siv hluav taws xob ntawm electromagnetic coupling kuj tau dhau los ua qhov teeb meem tseem ceeb ntawm cov engineers. Hluav taws xob ib puag ncig muaj kuab paug tsis muaj teeb meem tsawg dua li ib txwm muaj kuab paug ib puag ncig. Thiab electromagnetic pollution ua ib feem ntawm ib puag ncig muaj kuab paug kuj tau muab tso rau hauv cov txheej txheem. Cov khoom siv hluav taws xob hauv kev ua haujlwm ib txwm muaj, yuav raug cuam tshuam rau ntau yam ntawm electromagnetic cuam tshuam, suav nrog lawv tus kheej cov khoom siv hauv kev cuam tshuam, nrog rau lwm yam khoom siv hluav taws xob nyob ib puag ncig cuam tshuam, tib lub sijhawm yuav nyob ib puag ncig lwm yam khoom siv hluav taws xob electromagnetic cuam tshuam. Cov khoom siv hluav taws xob hauv ntau qhov kev thov ib puag ncig (tsev neeg, kev tswj hwm kev lag luam,zog) cov kev xav tau sib txawv heev, qhov no tuaj yeem xa mus rau tus qauv dav dav IEC/EN61000-6 series lossis cov khoom lag luam uas yuav tsum tau ua.
Qhov kev cuam tshuam ntawm electromagnetic nyob rau hauv txoj kev kis tau tus mob feem ntau suav nrog ob yam: ib qho yog nyob ntawm cov hlua khi rau kev sib kis, uas feem ntau suav nrog kev sib kis raws qhov chaw nres nkoj fais fab thiab cov teeb liab chaw nres nkoj; ntawm qhov tod tes, feem ntau raws qhov chaw rau kev sib kis.
Electromagnetic cuam tshuam:
Fais fab mov nyob rau hauv nws daim ntawv thov ib puag ncig yuav tsum ua kom tau raws li qhov tsawg kawg nkaus emission zog yuav tsum tau, txwv tsis pub nws yuav cuam tshuam nrog ib puag ncig ntawm cov khoom, tus qauv IEC / EN61000-6 raws li hom kev cai, muab faib rau hauv industrial ib puag ncig cov khoom yuav tsum tau thiab thaj chaw, kev lag luam thiab lub teeb muaj kev lag luam ib puag ncig emission yuav tsum; rau cov khoom siv hluav taws xob ntawm cov khoom siv dav dav, nyob rau theem pib ntawm kev tsim cov electromagnetic cuam tshuam qhov chaw, tshwj tsis yog nws yog ib qho qauv tshwj xeeb, kev cuam tshuam electromagnetic yuav ua raws li IEC/EN61000-6. Txwv tsis pub, tus qauv tsim yuav raug ua raws li IEC/EN61000-6-3 lossis IEC/EN61000-6-4.
Nrog rau qhov txuas ntxiv me me ntawm qhov ntim ntawm cov khoom siv hluav taws xob, lub zog ceev txuas ntxiv nce ntxiv, rau lub zog hluav taws xob nws tus kheej, hluav taws xob cuam tshuam tsim teeb meem txuas ntxiv mus ntxiv, MORNSUN tam sim no nyob rau hauv kev ua lag luam tag nrho AC-DC tsis tsuas yog built-in.lim, thaum nyob hauvtransformershielding, suab nrov nqus cov cuab yeej siv hluav taws xob tau nqis peev ntau ntawm cov nqi tsim kom tau raws li kev cog lus ntawm lub hom phiaj xav tau; R2 tiam ntawm cov khoom siv hluav taws xob qis DC-DC Txhua tus qauv rau kev tiv thaiv kev tsim qauv, kom ua tau raws li kev lag luam EN55022 / CISPR 22, EN55011 / CISPR 11 CLASS A cov kev cai, nyob rau hauv txoj kab nrog kev lag luam qib kev xav tau.
