Nyob qhov twg hauv ntiaj teb yog lub suab los ntawm transformer?

Lub suab ntawm lub transformer los ntawm sab hauv lub transformer.Lub transformer yog raws li nyob rau hauv lub hauv paus ntsiab lus ntawm electromagnetic induction, nrog thawj sab winding coil thiab theem nrab sab winding coil ntsia rau hauv, thiab silicon steel ntawv nrog high magnetic conductivity khoom nyob rau hauv nruab nrab. Raws li qhov tshwm sim, lub coil windings ntawm lub transformer yog xam raws li qhov chaw hla ntawm cov tub ntxhais.

Txij li thaum muaj coil winding, thaum nws txuas nrog AC 50Hz fais fab mov, yuav muaj qhov ua kom muaj zog.Hauv AC core coil, muaj ob feem ntawm qhov poob, qhov sib txawv tsis sib xws yog luv luv-circuit poob, uas yog, tooj liab poob, nws kuj tau muab faib ua ob ntu, uas yog lub zog ua haujlwm thiab lub zog reactive.

Qhov "eddy tam sim no" nce qhov poob ntawm transformer thiab heats li cov tub ntxhais ntawm lub transformer, tsa qhov kub ntawm lub transformer.

Muaj tooj liab poob RI ² ntawm lub coil tsis kam R thiab hlau poob (hysteresis poob thiab eddy tam sim no poob) hauv cov tub ntxhais hlau.Hlau poob yog kwv yees li proportional rau Bm ².Thaum qhov zaus ntawm cov khoom siv hluav taws xob raug kho, cov hlau poob ntawm lub kauj yog cuam tshuam nrog kev ua haujlwm voltage.Raws li lub tswv yim ntawm qhov tsis tu ncua flux U = 4.44fNBmS, Bm hauv cov tub ntxhais yog proportional rau cov ntaub ntawv voltage.Nyob rau hauv lwm yam lus, cov hlau poob yog kwv yees proportional rau lub square ntawm cov ntaub ntawv voltage.

Lub transformer tuaj yeem txiav txim siab txog kev ua haujlwm raws li lub suab ntawm kev ua haujlwm.Txoj kev yog siv ib qho kawg ntawm lub mloog pob ntseg ntawm cov roj tank ntawm lub transformer, thiab lwm qhov kawg nyob ze ntawm lub pob ntseg mloog kom zoo zoo rau lub suab.Yog hais tias nws yog ib tug tas mus li "yuyu" suab, nws txhais tau hais tias lub transformer yog khiav ib txwm.Yog hais tias lub suab "yuyu" hnyav dua li niaj zaus, xyuas qhov voltage, tam sim no thiab roj kub ntawm lub transformer kom pom tias nws yog tshwm sim los ntawm overvoltage los yog overload, yog hais tias tsis yog, feem ntau yog tshwm sim los ntawm xoob hlau core.Thaum koj hnov ​​​​"squeak, squeak" suab, xyuas seb puas muaj flashover ntawm lub casing nto.Thaum lub suab ntawm "crackling" tau hnov, muaj ib qho tawg ntawm cov rwb thaiv tsev sab hauv.

Volt-ampere yam ntxwv ntawm AC Circuit Court ntawm hlau tub ntxhais kauj

Tsis muaj-load poob yog muab faib ua ob ntu: active zog poob thiab reactive zog poob.Transformer nyob rau hauv lub thib ob qhib-circuit xeev, thawj tseem muaj ib tug tej yam tam sim no, thiab ces multiplied los ntawm cov thawj rated voltage yuav muaj ib tug tej yam hwj chim noj, qhov tam sim no hu ua tsis muaj-load tam sim no.Lub zog tsis muaj zog feem ntau yog hais txog hysteresis poob thiab eddy tam sim no poob hauv cov tub ntxhais hlau, uas feem ntau tau piav qhia hauv lub Hoobkas tshwj xeeb lossis cov ntawv qhia txog kev hloov pauv.Lub reactive fais fab poob ib feem yog qhov poob los ntawm excitation tam sim no, uas yog kwv yees li ntawm qhov sib npaug ntawm qhov tsis muaj zog ntawm transformer thiab tuaj yeem xam los ntawm cov qauv hauv qab no raws li qhov tsis muaj load tam sim no.

Q₀=I₀(%)/100Se

Tus Q₀nyob rau hauv cov mis yog hais txog lub reactive zog poob nyob rau hauv tsis muaj-load poob, nyob rau hauv kvar units.;

I₀ (%) yog hais txog qhov feem pua ​​​​ntawm transformer tsis muaj load tam sim no rau cov ntsuas tam sim no.

S₀Kev ntsuas yog hais txog lub peev xwm ntsuas ntawm lub transformer hauv KVA.

Ua hauj lwm hauv paus ntsiab lus ntawm ib-theem transformer

Qhov kev ua haujlwm yog qhov poob los ntawm kev ua haujlwm ntawm thawj winding thiab theem nrab winding ntawm lub transformer thaum dhau los ntawm tam sim no, uas yog proportional rau lub square ntawm tam sim no, yog li nws qhov loj me nyob ntawm qhov load thiab lub zog ntawm lub transformer.Lub reactive fais fab poob feem ntau yog qhov poob los ntawm cov dej ntws tawm, uas tuaj yeem xam los ntawm cov qauv hauv qab no.

Qd=Ud(%)/100Se

Qd nyob rau hauv cov mis yog hais txog lub reactive zog poob ib feem ntawm lub transformer luv luv-circuit poob, nyob rau hauv kvar units.;

Ud yog qhov feem pua ​​​​ntawm luv luv-circuit voltage rau rated voltage;

Se yog hais txog lub peev xwm ntsuas ntawm lub transformer hauv kvA.