Electromagnetic Compatibility cov teeb meem ntawm kev hloov pauv thiab lawv cov kev daws teeb meem
Raws li cov hluav taws xob thiab qhia ua ntej, hloov pauv rau cov tshuab hluav taws xob thiab hluav taws xob-ntsej muag loj hlob electromagnetic sib xyaw (EMC) kev txhawj xeeb. EMC txhais tau tias lub cuab yeej ua haujlwm ruaj khov nyob rau hauv kev ntxhov electromagnetic ib puag ncig tsis muaj messing lwm tus. Transformers feem ntau khiav mus rau ob qhov teeb meem: tau cuam tshuam los ntawm cov cim sab nraud, lossis xa cov paib uas cuam tshuam rau lwm tus. Kev ua kom pom cov teeb meem no thiab kho lawv cov teeb meem-nws ua kom muaj zog lub tshuab ruaj khov ruaj khov thiab hluav taws xob txhim khu kev qha.
Ⅰ. Key EMC teeb meem hauv Transformers
1. Kev cuam tshuam kev cuam tshuam: cov "tsis pom kev txawv"
Kev cuam tshuam yog ib qho. Thaum transformer khiav, sab hauv hluav taws xob hloov pauv ua rau cov phiajcim cuam tshuam uas taug kev los ntawm cov xov hlau. Hloov Hloov-Hom hloov pauv: nrawm-hloov cov transistors tsim cov high-zaus voltage spikes. Cov npluav los ntawm me me winder capactstance (ob peb picofarads (ob peb lub voj voog) rau cov suab lus theem nrab, ua suab nrov hom nrov.
Ib lub Hoobkas txoj kab muaj qhov teeb meem no-phem winding layout hauv nws transformers thawb 1-5mhz cuam tshuam 12db dhau txwv. Lub plc system khaws glitching, thiab ntau lawm tanked. Qhov kev cuam tshuam no kis tau los ntawm cov kab hluav taws xob, messing nrog tag nrho cov kev faib tawm.
2. Kev cuam tshuam hluav taws xob hluav taws xob: "lub suab nrov hluav taws xob"
Kev cuam tshuam hluav taws xob hluav taws xob los ntawm cov chaw hloov pauv hloov. Tsis zoo tsim windings cia lub zog sib nqus dej xau pov tseg raws li vuag. Ib qho chaw ntsuas cov ntaub ntawv hloov pauv, nrog kev tiv thaiv tsis muaj zog, muaj 30-1000mHz hluav taws xob 8dB tshaj CISPR22 tus qauv. Nyob ze Wireless iav Poob cim nkaus xwb.
Nrog 5G thiab IOT BOOMING, cov teb no muaj teeb meem ntau dua - lawv mess nrog cov khoom siv ntsuas thiab kev sib txuas lus uas xav tau cov cim tshuaj kom huv.
3. Harmonic Kev cuam tshuam: Waveform "Distorters"
Nqe lauj ib transformer rau cov load tsis yog-linear zoo li rectifiers lossis drives, thiab tam sim no tau txais kev sib tw-Harmonics daim foos. Ib lub tshuab hluav taws xob hlau lub tshuab hluav taws xob muaj kev hloov pauv muaj 28% tag nrho cov kev sib cav sib ceg (THD), rub daim phiaj hluav taws xob kom zoo rau 0.72. Tus nqi loj ntawm cov nqi hluav taws xob txhua xyoo.
Harmonics kuj tseem ua rau hloov chaw kub ceev, nce cov tub ntxhais ua kom thiab muaj cua sov. Zawv siab dua, lawv tuaj yeem ua kom yuam kev relay tshuab ua rau misfiring, kev pheej hmoo lub zog kev nyab xeeb.
Ⅱ. Txhim kho hloov pauv hloov EMC
1. Tsim Qauv Zoo: Kev cuam tshuam cuam tshuam thaum pib
Tsim qauv zoo yog qhov tseem ceeb. Rau windings, "sandwich txoj kev" -Txoj kev ua haujlwm theem pib thiab theem nrab-nruj-nruj-nruj-nruj-nruj-txheej tsev khub lawv, txiav kom tsis taus thiab capacitance. Uas txo kev cuam tshuam. Xaiv lub winding zoo tig thiab xaim loj heev.
Xaiv cov Cores los ntawm kev siv: Ferrite ua haujlwm rau cov hloov pauv ntau zaus; Silicon steel rau tsawg-zaus, muaj zog ntau. Ntxiv lub tooj liab lossis txhuas ntawv ci ntawm windings, grounded zoo, los thaiv kev cuam tshuam.
2. Lim: Thaiv cov suab nrov
Ntxaij lim dej pab kom tsis txhob ua cov kev cuam tshuam. Tso lawv ntawm transformer cov ntaub ntawv thiab tawm. Rau cov suab nrov hom, siv cov hom inductors thiab y-capacitors-tus inductor thaiv nws, lub catactrator tawv taub hau nws rau hauv av.
Rau cov suab nrov sib txawv, siv cov neeg ua haujlwm sib txawv thiab xas capacitors. Ib qho chaw ruaj khov siv nanocrystalline core inductors hauv chaw nres tsheb hloov pauv hloov pauv hloov pauv hloov pauv hloov pauv hloov ntawm 100kHz vs. Ferrite. High-zaus kev cuam tshuam tau nqis tawm, thiab cov khoom kis tau dhia ntawm 67% rau 99%.
3. Grounding thiab Shield: muaj suab nrov
Kev cog qoob loo zoo yog qhov tseem ceeb. Cov tub ntxhais thiab cov ntaub thaiv uas xav tau thaj chaw khoom (qis dua 4ω) txhawm rau cuam tshuam. Siv ntau qhov point lossis hybrid grounding raws li xav tau.
Kev thaiv kev txiav hluav taws xob. Hlau ntim rau ntawm cov hloov pauv, ua av zoo, thaiv cov teb. Nyob rau hauv cov chaw zoo li tsev kho mob, ob chav npog ua haujlwm ua haujlwm zoo dua-khaws cov tshuab hloov pauv ntawm kev ntxhov siab nrog lub iav rhiab.
4. Ntse legout thiab xaim hluav taws xob: tsis tshua muaj sib tham
Qhov chaw hloov pauv ntawm cov iav rhiab. Ntawm Circuit Court laug cam, kom lawv nyob deb ntawm lwm qhov chaw; Nyob rau hauv lub hwj chim teeb tsa, nyob ntshiab ntawm cov kab kev sib txuas lus thiab cov khoom siv voltage tsawg.
Txoj kab kev siv hlau kom tsis txhob muaj kev sib haum nrog cov chaw hloov pauv. Siv cov thaiv npog lossis cov cable sib txawv rau cov cim kev ua haujlwm siab, thiab ua kom lawv cov kev txiav luv luv tawg thiab sib tham.
Ⅲ. Kev Kho Mob Tiag Tiag
1. Lub Hoobkas Kab Txhim Kho
Lub Hoobkas txoj kab muaj kev tswj hwm cov teeb meem los ntawm kev cuam tshuam hloov pauv, tua pov thawj. Lawv redid windings nrog cov sandwich txoj kev, ntxiv cov ntxaij lim dej, thiab nqaij daim thaiv / av. Lub kaw lus ruaj khov, thiab ntau lawm bouned rov qab.
2. Lub hauv paus chaw nres tsheb kho
Ib qho kev hloov pauv ze ntawm lub cell ntauwd messed nrog teeb liab-taws hluav taws xob siab dhau. Techs txuas ntxiv pob zeb winding, ib daim npog hlau, thiab chaw ruaj ruaj ruaj ruaj. Cov cim qhia ruaj khov, thiab hu xov tooj ua ke.
Ⅳ. Qhwv
Transformer EMC teeb meem kov tsim, tsim, thiab kev teeb tsa. Txhim kho kev sib xyaw ua ke zoo dua tsim qauv, lim, tiv thaiv, thiab cov ntawv pov thawj ntse. Cov kauj ruam no tau hloov pauv ua haujlwm kom ntseeg tau yam tsis muaj kev ntxhov siab nrog lwm tus.
Raws li cov khoom siv hluav taws xob thiab cov tshuab hluav taws xob yuav tsum tau siv cov tshuaj ntxuav tu huv si, EMC Tech yuav tsum hloov kho. Cov ntaub ntawv tiv thaiv cov ntaub ntawv tshiab thiab cov ntxaij lim dej tshiab yuav pab tsav qib kev nce qib hauv lub zog thiab hluav taws xob.