Yam dab tsi yuav tsum tau xav txog nyob rau hauv kev xaiv ntawm kev tswj fais fab mov
Rau cov kws tshaj lij, kev xaiv ntawm kev hloov hluav taws xob hloov hluav taws xob yog txheej txheem uas yuav tsum tau ua kom tiav txhua zaus lawv npaj cov khoom siv hluav taws xob. Nws yog ib qho kev xaiv ib lo lus nug ntawm qhov chaw, tab sis ua ntej xaiv zaum kawg, engineers yuav tsum xav txog ntau yam. Tau kawg, peb xav txog nws thawj lub sijhawm Nws yuav yog lo lus nug ntawm tus nqi. Qhov kuv xav piav qhia hauv tsab xov xwm niaj hnub no yog tias nyob rau hauv tus txheej txheem ntawm kev hloov cov khoom siv hluav taws xob xaiv, ntxiv rau tus nqi, peb yuav tsum tau them sai sai rau qee yam hauv cov khoom hauv thiaj li yuav xaiv cov khoom siv fais fab zoo tshaj plaws.
Hais txog kev xaiv ntawm cov khoom siv hluav taws xob hloov pauv, peb yuav tsum tau ua tib zoo saib thiab xav txog ntau txoj cai. Piv txwv li, tus nqi nominal ntawm kev tuav pov hwm xaim yog 1A, uas yog hais txog lub hom phiaj ntawm 25 degrees, tab sis yog tias cov cuab yeej ua haujlwm ntawm 50 degrees, tus nqi nominal ntawm kev tuav pov hwm xaim yuav qis dua 1A, thiab cov qauv tsim ntawm qhov ntsuas kub yuav tsum. raug xaiv Loj dua. Nyob rau hauv tib txoj kev, 1mH ntawm inductance tsis yog ib txwm 1mH, nws yog nyob ntawm 1kHz, yog tias koj siv nws ntawm 1MHz, tus nqi ntawm 1mH inductance xa los ntawm processor tsis yog 1mH, vim hais tias ntawm 1M inductance coil Distributed capacitance pib. plays lub luag haujlwm loj, uas yuav cuam tshuam qee qhov inductance. Qhov poob ntawm cov lim IL=25dB yog thaum MHz Rs / RL=50 ohms (qhov chaw impedance thiab load impedance), tab sis nyob rau hauv kev xyaum, nws yog ib qho nyuaj rau ua tiav impedance kom tau raws li qhov yuav tsum tau ntawm peb. lim daim ntawv thov, yog li 25dB Qhov kev tso tawm yuav raug txo kom tsawg. Cov hlaws, capacitors, diodes, resistors ... txhua tus muaj cov cai zoo sib xws. Cia peb tham txog cov cai ntawm kev hloov fais fab mov module xaiv uas tsis yog tus nqi. Muaj ntau ntau yam ntawm lub zog modules, xws li flyback, rau pem hauv ntej, thawb-rub, ib nrab-bridge, thiab tag nrho-bridge, txhua tus yog superior nyob rau hauv tej yam ntxwv qhia vim hais tias ntawm nws txawv cov hauv paus ntsiab lus.
Ntawm no peb piav qhia txog kev siv cov cai ntawm ntau cov qauv topological. Thawj yog lub flyback fais fab mov. Nyob rau hauv ib lub voj voog ntawm kev hloov, tsis muaj paug tawm thaum lub sij hawm them nyiaj. Vim yog cov yam ntxwv no, nws yog ib qho nyuaj rau kev ua tiav kev tswj xyuas lub sijhawm zoo thiab cov yam ntxwv ripple. Txawm hais tias nws tuaj yeem ua tiav los ntawm lub zog loj cia Capacitors pab daws nws me ntsis, tab sis lub hauv paus ntsiab lus tsis zoo tom qab tag nrho, thiab tsis muaj kev txawj ntse tuaj yeem them rov qab los ntawm kev ua haujlwm hnyav, tab sis thaum ua rau nws thiab ntsib teeb meem tseem ceeb, nws yuav ua tiav. tsis muaj peev xwm kov yeej ib qho teeb meem. Leakage inductance kuj loj thiab lwm yam teeb meem, tab sis nws qhov zoo yog qhov yooj yim Circuit Court, tsis tshua muaj nqi, me me, tsis tas yuav ntxiv magnetic reset winding, thiab cov tswv yim voltage input kuj dav. Nws yog qhov tseeb vim tias qhov no nws suav nrog ntau dua 70 feem pua ntawm tag nrho cov khoom siv hluav taws xob.
Cia peb tham txog cov qauv topological ntawm lwm cov khoom siv hluav taws xob hloov pauv tseem ceeb hauv kev lag luam hluav taws xob. Qhov tso zis hluav taws xob hloov pauv cov yam ntxwv ntawm lub zog xa mus rau pem hauv ntej yog qhov zoo dua, thiab lub peev xwm thauj khoom muaj zog dua, tab sis nws qhov tsis zoo kuj tseem pom tseeb. Ib lub zog loj cia lim inductor thiab lub freewheeling diode yog siv, lub ntim yog loj, thiab rov qab electromotive voltage ntawm thawj kauj ntawm lub transformer yog siab. Cov kev xav tau rau lub raj hloov pauv yog qhov siab (yooj yim rau kev tawg thiab kev puas tsuaj). Lub laub-rub fais fab mov tam sim no cov lus teb ceev ceev yog siab heev, thiab cov yam ntxwv ntawm qhov hluav taws xob tso tawm tau zoo heev. Ntawm tag nrho cov txheej txheem topological, nws yog ib qho kev hloov hluav taws xob nrog qhov kev siv siab tshaj plaws, tsis muaj qhov sib nqus flux to, thiab yooj yim tsav Circuit Court. Tab sis nws qhov tsis zoo yog tias ob lub cuab yeej hloov pauv yuav tsum muaj tus nqi siab tiv thaiv hluav taws xob; muaj ob pawg thawj coils, thiab lub laub-rub hloov fais fab mov nrog cov zis hluav taws xob tsawg yog qhov tsis zoo. Yog hais tias ob qho tib si rau pem hauv ntej converters tsis yog tag nrho symmetrical los yog sib npaug, qhov sib npaug ntawm cov hlau nplaum sib nqus tom qab ob peb lub voj voog yuav ua rau cov tub ntxhais sib nqus tag nrho, ua rau muaj kev cuam tshuam ntau dhau ntawm lub tshuab hluav taws xob ntau zaus, thiab tseem ua rau lub raj hloov pauv. Cov zis hluav taws xob ntawm tus choj hloov hluav taws xob yog qhov loj heev, lub zog ua haujlwm siab heev, tus nqi hluav taws xob tiv thaiv ntawm lub raj hloov hluav taws xob yog qhov qis, thiab cov kauj ruam tseem ceeb ntawm transformer tsuas yog xav tau ib qho winding. Qhov tsis zoo yog tias lub zog qis, yuav muaj ib cheeb tsam semi-conducting, thiab qhov poob yog loj.
Cov teeb meem saum toj no yog tshwm sim los ntawm qhov zoo thiab qhov tsis zoo ntawm nws cov qauv topological. Txawm hais tias peb tuaj yeem suav tias lub hwj chim module yog lub thawv dub, qhov no kuj yog ib qho tseem ceeb uas peb yuav tsum xyuam xim rau thaum xaiv lub hwj huam mov. Vim yog cov kev daws teeb meem uas tuaj yeem paub txog tib txoj haujlwm, ib qho tuaj yeem pom tau yooj yim, thiab lwm qhov tuaj yeem pom tau nrog kev siv zog zoo.
