Dab tsi hloov fais fab mov EMC
Electromagnetic Compatibility (EMC) ntawm hloov fais fab hluav taws xob cov teeb tsa thiab hluav taws xob cuam tshuam cov teeb tsa nws tau txais thaum lub sijhawm ua haujlwm. Raws li kev siv hluav taws xob muaj txiaj ntsig, hloov hom fais fab khoom siv tau dav siv hauv ntau yam khoom siv hluav taws xob. Txawm li cas los xij, hloov fais fab khoom siv tsim cov mem tes high-zaus cov haujlwm kom muaj kev sib cuam tshuam nrog cov khoom hluav taws xob thiab txawm tias cov khoom siv ua tsis zoo. Yog li ntawd, lub tshuab hluav taws xob sib xyaw ua tau ntawm hloov hom hwj huam yog qhov tseem ceeb tshaj plaws rau kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob.
Hloov fais fab mov EMC feem ntau suav nrog kev tswj hwm lub zog rau cov hluav taws xob cuam tshuam los ntawm cov khoom siv hluav taws xob hauv hluav taws xob, qhov ntawd yog, kev ua haujlwm ntawm hluav taws xob; Qhov thib ob yog kev tawm tsam kev cuam tshuam nrog lub zog hloov fais fab mov nws tus kheej rau cov phiajcim sab nraud hluav taws xob, uas yog kev tawm tsam kev cuam tshuam. Txhawm rau kom ntseeg tau tias muaj hluav taws xob compatibility ua tau ua tau ntawm hloov hom hwj huam, tsim qauv thiab ua kom tau zoo yuav tsum tau nqa tawm ntawm cov hauv qab no:
Cov lus txhib hluav taws xob lim: Lub tswv yim lub davhlau ya nyob twg ntawm cov hloov hluav taws xob feem ntau txuas nrog lub zog hluav taws xob, thiab cov zaus muaj kev cuam tshuam zoo rau cov kev tsis zoo ntawm kev hloov pauv fais fab. Txhawm rau kom txo qhov kev cuam tshuam no, lub lim dej yuav tsum tau nruab rau ntawm lub tswv yim ntawm hloov fais fab tuag kom lim tawm ntawm cov phiaj xwm cuam tshuam high-zaus. Cov lim tawm tswv yim uas suav nrog cov lim dej LC, π - hom lim, thiab lwm yam.
Kev tsim tawm lim: Cov zis davhlau ya nyob twg yog txuas nrog cov cuab yeej fais fab, uas muaj cov kev ua kom ruaj khov thiab cov ripple ntawm lub zog muab. Txhawm rau txhim kho qhov ruaj khov ntawm cov zis hluav taws xob thiab txo cov ripple, lub lim yuav tsum tau muab tso rau cov khoom siv hluav taws xob high-zaus hauv cov zis hluav taws xob. Cov khoom siv tawm khoom muaj xws li cov lim las LC, LC - Π lim, thiab lwm yam.
Kev thaiv kev tsim: Lub zog ntawm cov mem tes tam sim no sab hauv lub tshuab hluav taws xob yuav tsim hluav taws xob, ua rau cuam tshuam nrog cov khoom siv hluav taws xob. Txhawm rau kom txo qhov kev cuam tshuam no, cov tshuab hluav taws xob tuaj yeem siv los txo cov hluav taws xob tsim tawm sab hauv ntawm lub zog hluav taws xob tsis pub dhau ib qho. Cov kev tiv thaiv kev tiv thaiv xws li cov ntaub thaiv npog cov hlau, thaiv cov thawv, thiab lwm yam.
Tsim qauv hauv av: Grounding yog ib qho ntawm cov tseem ceeb hauv kev ua kom muaj lub tshuab hluav taws xob hluav taws xob tau ua tau ntawm kev hloov cov khoom siv hluav taws xob. Tsim av tsim hluav taws xob tsim nyog yuav ua kom muaj zog txo qis kev cuam tshuam thiab txhim kho hluav taws xob sib xyaw ua tau zoo. Hauv kev tsim ntawm hloov hom hwj huam, nws yog ib qho tsim nyog yuav tau txuas cov twj siv hluav taws xob, nws yog qhov tsim tawm, cov xov hlau, thiab lwm yam rau hauv av impedance.
Tswj lub tswv yim zoo: kev tswj hwm lub tswv yim ntawm kev hloov cov khoom siv hluav taws xob muaj kev cuam tshuam tseem ceeb ntawm hluav taws xob siv hluav taws xob. Los ntawm kev txhim kho txoj kev tswj hwm kev tswj hwm, qhov ruaj khov thiab tiv thaiv kev cuam tshuam nrog kev hloov pauv fais fab tuaj yeem txhim kho. Cov tswv yim tswj hwm suav nrog PWM tswj, kev tswj hwm kev kho, thiab lwm yam.
Cov kev xaiv tivthaiv: Cheebtsam hauv hloov hom hwj huam muaj kev cuam tshuam tseem ceeb ntawm hluav taws xob siv hluav taws xob. Nws yog ib qho tsim nyog los xaiv cov khoom sib xyaw nrog cov khoom siv hluav taws xob zoo ua tau, xws li caccuantibic compatibility ua tau, xws li cov indears, diodes, etc. nrog tsawg hluav taws xob cuam tshuam.
Hauv ntej, electromagnetic sib haum (EMC) ntawm hloov hom hwj huam yog ib qho tseem ceeb ntawm kev hloov hom fais fab khoom thiab cov neeg nyob ib puag ncig hauv cov khoom siv hluav taws xob. Los ntawm kev tsim qauv thiab ua kom zoo dua cov lim dej, kev xaiv cov khoom siv, tswj kev hloov kho hluav taws xob tuaj yeem txhim kho kom muaj kev lag luam zoo ntawm cov khoom siv hluav taws xob.
