xov xwm

Cov kab hluav taws xob sib nqus tsim los ntawm cov kauj tsis tuaj yeem dhau los ntawm cov kauj ruam thib ob, yog li cov inductance uas ua rau cov xaim hlau nplaum yog hu ua leakage inductance. Hais txog qhov sib nqus flux uas ploj lawm thaum lub sij hawm coupling txheej txheem ntawm thawj thiab theem nrab transformers.
Kev txhais ntawm to inductance, ua rau to inductance, kev puas tsuaj ntawm to inductance, ntau yam cuam tshuam rau to to inductance, lub ntsiab txoj kev los txo cov to inductance, ntsuas ntawm to inductance, qhov sib txawv ntawm to inductance thiab magnetic flux to.
Leakage Inductance txhais
Cov dej xau inductance yog ib feem ntawm cov sib nqus flux uas ploj thaum lub sij hawm coupling txheej txheem ntawm thawj thiab theem nrab ntawm lub cev muaj zog. Cov xau inductance ntawm transformer yuav tsum yog tias cov kab sib nqus ntawm lub zog tsim los ntawm lub kauj tsis tuaj yeem dhau los ntawm ob kauj ruam, yog li cov inductance uas ua rau cov hlau nplaum sib nqus hu ua leakage inductance.
Yog vim li cas rau inductance
Leakage inductance tshwm sim vim qee qhov ntawm thawj (secondary) flux tsis txuas rau theem nrab (primary) los ntawm cov tub ntxhais, tab sis rov qab mus rau thawj (thib ob) los ntawm huab cua kaw. Lub conductivity ntawm hlau yog hais txog 109 npaug ntawm huab cua, thaum lub permeability ntawm ferrite core khoom siv nyob rau hauv transformers tsuas yog hais txog 104 npaug ntawm huab cua. Yog li ntawd, thaum lub magnetic flux dhau los ntawm magnetic Circuit Court tsim los ntawm ferrite core, ib feem ntawm nws yuav ntws mus rau hauv cov huab cua, tsim ib tug kaw magnetic Circuit Court nyob rau hauv cov huab cua, ua rau cov hlau nplaum to. Thiab raws li kev khiav hauj lwm zaus nce, cov permeability ntawm cov ferrite core cov khoom siv txo. Yog li ntawd, nyob rau hauv high zaus, qhov no tshwm sim yog ntau pronounced.
Kev phom sij ntawm cov dej xau inductance
Leakage inductance yog qhov taw qhia tseem ceeb ntawm kev hloov pauv hloov pauv, uas muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov khoom siv hluav taws xob hloov pauv. Lub hav zoov ntawm cov dej xau inductance yuav tsim rov qab lub zog hluav taws xob thaum lub tshuab hluav taws xob hloov pauv, uas yooj yim ua rau overvoltage tawg ntawm cov khoom siv hloov khoom siv; Kev xau inductance kuj tseem tuaj yeem cuam tshuam nrog Kev faib cov peev txheej hauv Circuit Court thiab faib cov peev txheej ntawm cov transformer coil tsim ib lub voj voog oscillation, uas ua rau lub voj voog oscillate thiab radiate electromagnetic zog sab nraud, ua rau electromagnetic cuam tshuam.
Muaj ntau yam cuam tshuam rau kev xau inductance
Rau ib qho kev hloov pauv ruaj khov uas twb tau ua lawm, qhov xau inductance cuam tshuam nrog cov hauv qab no: K: winding coefficient, uas yog proportional to the to to inductance. Rau qhov yooj yim thawj thiab theem nrab windings, noj 3. Yog hais tias lub thib ob winding thiab thawj winding yog alternately raug mob Ces, noj 0.85, uas yog vim li cas rau txoj kev sandwich winding yog pom zoo, lub leakage inductance poob ntau, tej zaum tsawg tshaj li 1/3 ntawm tus thawj. Lmt: Qhov nruab nrab ntev ntawm txhua qhov tig ntawm tag nrho cov winding ntawm lub cev pob txha Yog li ntawd, transformer designers nyiam xaiv ib tug tub ntxhais nrog ib tug ntev tub ntxhais. Qhov dav ntawm winding, qhov me me ntawm cov dej inductance. Nws yog qhov zoo heev los txo qhov to ntawm inductance los ntawm kev tswj tus naj npawb ntawm lem ntawm winding kom tsawg. Kev cuam tshuam ntawm inductance yog kev sib raug zoo quadratic. Nx: tus naj npawb ntawm cov lem ntawm winding W: lub dav winding Tins: lub thickness ntawm lub winding rwb thaiv tsev bW: lub thickness ntawm tag nrho cov windings ntawm lub tiav transformer. Txawm li cas los xij, txoj kev sandwich winding coj cov teeb meem uas cov kab mob parasitic capacitance nce, qhov ua tau zoo yog txo. Cov capacitances no yog tshwm sim los ntawm qhov sib txawv muaj peev xwm ntawm cov coils uas nyob ib sab ntawm kev sib koom ua ke winding. Thaum hloov pauv, lub zog khaws cia hauv nws yuav raug tso tawm hauv daim ntawv ntawm spikes.
Txoj hauv kev tseem ceeb los txo qis inductance
Lub interlaced coils 1. Txhua pawg ntawm windings yuav tsum raug mob kom nruj, thiab yuav tsum tau muab sib npaug. 2. Cov kab hlau lead-tawm yuav tsum tau ua kom zoo, sim ua lub kaum sab xis, thiab ze rau ntawm cov pob txha pob txha 3. Yog tias ib txheej tsis tuaj yeem raug mob tag nrho, ib txheej yuav tsum tau sparsely qhov txhab. 4 Cov txheej txheej insulating yuav tsum raug txo kom tsawg kom ua tau raws li qhov yuav tsum tau muaj hluav taws xob thiab yog tias muaj ntau qhov chaw, xav txog cov pob txha elongated thiab txo qhov tuab. Yog tias nws yog ntau txheej txheej, daim ntawv qhia kev sib nqus sib nqus ntawm ntau txheej ntawm cov coils tuaj yeem ua rau tib txoj kev. Txhawm rau txo cov dej xau inductance, ob qho tib si thawj thiab theem nrab tuaj yeem segmented. Piv txwv li, nws muab faib ua thawj 1/3 → theem nrab 1/2 → thawj 1/3 → theem nrab 1/2 → thawj 1/3 lossis thawj 1/3 → theem nrab 2/3 → thawj 2/3 → theem nrab 1/ 3 thiab lwm yam, qhov siab tshaj plaws magnetic teb lub zog yog txo mus rau 1/9. Txawm li cas los xij, cov coils tau muab faib ntau dhau, cov txheej txheem winding yog qhov nyuaj, qhov sib piv ntawm cov coils tau nce ntxiv, qhov ua kom tiav yog txo, thiab kev txwv ntawm thawj thiab theem nrab yog qhov nyuaj. Nyob rau hauv rooj plaub uas cov zis thiab input voltages kuj tsawg, qhov to inductance yuav tsum muaj tsawg heev. Piv txwv li, tus tsav transformer tuaj yeem raug mob nrog ob lub xov hlau sib luag. Tib lub sijhawm, cov tub ntxhais sib nqus nrog lub qhov rais loj thiab qhov siab yog siv, xws li hom lauj kaub, hom RM, thiab PM hlau. Oxygen yog sib nqus, yog li ntawd lub zog magnetic teb nyob rau hauv lub qhov rais yog tsawg heev, thiab ib tug me me to inductance yuav tau txais.
Kev ntsuas qhov dej inductance
Txoj hauv kev dav dav los ntsuas cov dej xau inductance yog luv luv Circuit Court theem nrab (primary) winding, ntsuas qhov inductance ntawm thawj (secondary) winding, thiab qhov tshwm sim tus nqi inductance yog thawj (thib ob) mus rau theem nrab (primary) to inductance. Ib tug zoo transformer to inductance yuav tsum tsis txhob ntau tshaj 2 ~ 4% ntawm nws tus kheej magnetizing inductance. Los ntawm kev ntsuas qhov xau inductance ntawm lub transformer, qhov zoo ntawm transformer tuaj yeem txiav txim siab. Cov xau inductance muaj kev cuam tshuam ntau dua rau hauv Circuit Court ntawm cov zaus siab. Thaum winding lub transformer, lub leakage inductance yuav tsum tau txo kom ntau li ntau tau. Feem ntau ntawm cov "sandwich" cov qauv ntawm thawj (thib ob)-secondary (primary)-primary (secondary) yog siv los ua cua tshuab transformer. kom txo tau qhov inductance.
Qhov sib txawv ntawm cov dej xau inductance thiab sib nqus flux to
Cov dej xau inductance yog qhov sib txuas ntawm lub hauv paus thiab theem nrab thaum muaj ob los yog ntau dua windings, thiab ib feem ntawm cov hlau nplaum flux tsis ua tiav rau qhov thib ob. Chav tsev ntawm cov dej xau inductance yog H, uas yog tsim los ntawm cov dej sib nqus nqus los ntawm thawj mus rau theem nrab. Sib nqus flux to tuaj yeem yog ib qho winding lossis ntau qhov windings, thiab ib feem ntawm qhov sib nqus flux to tsis nyob rau hauv cov kev taw qhia ntawm lub ntsiab sib nqus flux. Unit of magnetic flux to Wb. Leakage inductance yog tshwm sim los ntawm kev sib nqus flux to, tab sis sib nqus flux to tsis tas yuav ua rau cov dej xau inductance.