Lub luag haujlwm tseem ceeb ntawm lub zog hloov hluav taws xob yog los ntawm txoj cai ntawm electromagnetic induction. Nws lub luag haujlwm tseem ceeb yog txhawm rau nce lossis qis dua qhov hluav taws xob hauv AC Circuit Court thaum tswj hwm qhov zaus, yog li ua tau raws li qhov xav tau ntawm qhov sib txawv voltage theem hauv kev sib kis, kev faib tawm, thiab kev siv hluav taws xob hluav taws xob.Qhov kev ua haujlwm no yog ua tib zoo tsim electromagnetic circuit thiab auxiliary system, tsim ib qho tseem ceeb ntawm lub zog ntws ntawm lub zog hluav taws xob.
Thaum lub hauv paus winding ntawm lub transformer txuas nrog AC lub zog qhov chaw, qhov hloov pauv tam sim no tsim ib qho kev sib nqus sib nqus hauv cov tub ntxhais. Qhov no flux mus raws li ib tug kaw sib nqus Circuit Court los ntawm lub thib ob winding, inducing ib tug electromotive quab yuam (EMF) nyob rau hauv lub thib ob winding raws li Faraday txoj cai ntawm electromagnetic induction. Qhov loj ntawm qhov induced EMF yog proportional rau tus naj npawb ntawm lem nyob rau hauv winding. Yog li ntawd, los ntawm kev tsim cov lem piv ntawm thawj thiab theem nrab windings, ib proportional voltage conversion yuav ua tiav. Yog hais tias tus naj npawb ntawm lem nyob rau hauv lub thib ob winding yog ntau tshaj qhov uas nyob rau hauv thawj winding, nws yog ib kauj ruam - nce transformer; txwv tsis pub, nws yog kauj ruam -down transformer. Vim tias qhov zaus ntawm AC tam sim no tseem nyob tas li thaum lub sijhawm hloov pauv, lub tshuab hloov pauv tuaj yeem hloov hluav taws xob zoo ntawm cov qib sib txawv ntawm qhov sib txawv yam tsis hloov nws cov yam ntxwv zaus.
Cov qauv tsim ntawm cov tub ntxhais thiab windings yog cov khoom siv rau qhov kev ua haujlwm no. Cov tub ntxhais feem ntau yog tsim los ntawm stacked siab -permeability silicon steel los xij los muab qhov qis -resistivity magnetic flux txoj kev, txo hysteresis thiab eddy tam sim no poob thiab txhim kho zog conversion efficiency. Cov windings yog ua los ntawm tooj liab los yog txhuas hlau nrog zoo conductivity thiab yog ntxiv txhim khu kev qha inter-txheej thiab inter-tig rwb thaiv tsev kom ntseeg tau tias hluav taws xob cais thiab mechanical stability. Qhov kev teeb tsa ntawm qhov siab - thiab qis -voltage windings ntawm cov tub ntxhais yuav tsum sib npaug ntawm cov rwb thaiv tsev nyob deb thiab coupling nruj kom ua kom zoo sib nqus coupling thiab txwv tsis pub ntxiv los ntawm cov dej ntws tawm.
Ntxiv nrog rau kev hloov pauv ntawm electromagnetic, transformers kuj tseem ua haujlwm zoo xws li kev rho tawm hluav taws xob, kev sib txuam impedance, thiab kev faib hluav taws xob. Hauv qee qhov kev siv, cov khoom siv hluav taws xob tuaj yeem thaiv cov khoom siv DC lossis cuam tshuam kev sib raug zoo, kev txhim kho lub zog zoo. Hauv kev sib txuas hluav taws xob sib txuas, los ntawm kev xaiv qhov kev hloov pauv thiab muaj peev xwm tsim nyog, kev sib koom tes fais fab thiab kev ua haujlwm ruaj khov ntawm cov tshuab sib txawv tuaj yeem ua tiav.
Thaum lub tshuab cua txias thiab rwb thaiv tsev tsis ncaj qha koom nrog hauv kev hloov pauv hluav taws xob, lawv yog qhov tseem ceeb rau kev ua haujlwm ruaj khov ntawm lub transformer. Insulating roj los yog cov ntaub ntawv insulating kom muaj kev ruaj ntseg ntawm cov windings thiab cov tub ntxhais nyob rau hauv siab -voltage tej yam kev mob, thaum ib txhij dissipating tshav kub generated los ntawm kev poob los ntawm tshav kub conduction, tuav ib tug haum kev khiav hauj lwm kub, thiab enabling lub transformer ua hauj lwm stably nyob rau hauv rated tej yam kev mob rau ncua sij hawm. Yog li ntawd, nws tuaj yeem pom tau tias lub hauv paus ua haujlwm ntawm lub zog hloov hluav taws xob yog ua raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, ntxiv los ntawm cov qauv tsim thiab kev pabcuam ua tiav, ua rau lawv ua lub luag haujlwm tsis tuaj yeem hloov pauv hauv kev xa hluav taws xob thiab kev faib tawm.