Muaj cov kev xav tau sib xws rau ntau hom kev hloov pauv, uas tuaj yeem qhia tau los ntawm cov kev coj ua tsis zoo.Piv txwv li, cov txheej txheem tseem ceeb ntawm lub zog hloov hluav taws xob muaj xws li: ntsuas lub zog, ntsuas qhov ntsuas hluav taws xob thiab qhov ntsuas hluav taws xob, ntsuas zaus, qib ua haujlwm kub, ntsuas kub nce, qhov ntsuas hluav taws xob, kev ua haujlwm rwb thaiv tsev thiab dej tsis kam.Rau cov transformers uas tsis tshua muaj zaus, lub ntsiab kev tsis yog: transformation ratio, zaus yam ntxwv, nonlinear distortion, sib nqus shielding thiab electrostatic shielding, efficiency, thiab lwm yam.
Cov tsis tseem ceeb ntawm transformer muaj xws li voltage piv, zaus yam ntxwv, ntsuas lub zog thiab efficiency.
(1)Voltage ration
Kev sib raug zoo ntawm qhov voltage piv n ntawm lub transformer thiab lub lem thiab voltage ntawm thawj thiab theem nrab windings yog raws li nram no: n = V1 / V2 = N1 / N2 qhov twg N1 yog thawj (thawj) winding ntawm lub transformer, N2 yog lub Secondary (secondary) winding, V1 yog qhov voltage ntawm ob qho kawg ntawm thawj winding, thiab V2 yog qhov voltage ntawm ob qho kawg ntawm qhov thib ob winding.Qhov voltage piv n ntawm lub kauj ruam-up transformer yog tsawg tshaj li 1, qhov voltage ratio n ntawm kauj ruam-down transformer yog ntau dua 1, thiab qhov voltage ratio ntawm qhov kev rho tawm transformer yog sib npaug rau 1.
(2)Rated hwj chim P Qhov parameter no feem ntau yog siv rau lub hwj chim transformers.Nws yog hais txog qhov tso zis hluav taws xob thaum lub zog hloov hluav taws xob tuaj yeem ua haujlwm ntev yam tsis muaj siab tshaj qhov ntsuas kub raws li qhov teev ua haujlwm zaus thiab qhov hluav taws xob.Lub zog ntsuas ntawm transformer muaj feem xyuam rau thaj tsam ntawm cov tub ntxhais hlau, txoj kab uas hla ntawm enamelled hlau, thiab lwm yam. Lub transformer muaj loj hlau core seem cheeb tsam, tuab enamelled hlau txoj kab uas hla thiab loj tso zis hwj chim.
(3)Frequency characteristic Frequency characteristic hais txog tias lub transformer muaj ib tug tej yam kev khiav hauj lwm zaus ntau yam, thiab transformers nrog txawv kev khiav hauj lwm zaus ranges tsis tau interchanged.Thaum lub transformer ua hauj lwm tshaj nws qhov ntau zaus, qhov kub yuav nce los yog transformer yuav tsis ua hauj lwm ib txwm.
(4)Kev ua tau zoo yog hais txog qhov piv ntawm cov zis hluav taws xob thiab lub zog hluav taws xob ntawm lub tshuab hluav taws xob ntawm cov ntsuas ntsuas.Tus nqi no yog proportional rau lub zog tso zis ntawm lub transformer, uas yog, qhov ntau dua qhov tso zis zog ntawm lub transformer, lub efficiency ntau dua;Qhov me me ntawm cov zis hluav taws xob ntawm lub transformer, qhov ua haujlwm qis dua.Tus nqi ntawm transformer feem ntau yog nruab nrab ntawm 60% thiab 100%.
Ntawm lub zog ntsuas, qhov piv ntawm cov zis hluav taws xob thiab lub zog hluav taws xob ntawm lub tshuab hluav taws xob hu ua transformer efficiency, uas yog
η= x 100%
Qhov twgη Yog qhov ua tau zoo ntawm cov transformer;P1 yog lub zog input thiab P2 yog lub zog tso zis.
Thaum cov zis hluav taws xob P2 ntawm lub transformer sib npaug rau lub zog input P1, qhov ua tau zooη Sib npaug rau 100%, lub transformer yuav tsis tsim ib qho kev poob.Tab sis qhov tseeb, tsis muaj xws li transformer.Thaum lub transformer xa hluav taws xob hluav taws xob, nws ib txwm ua rau poob, uas feem ntau suav nrog tooj liab thiab hlau poob.
Copper poob yog hais txog qhov poob uas tshwm sim los ntawm cov coil tsis kam ntawm transformer.Thaum cov tam sim no yog rhuab los ntawm lub coil tsis kam, ib feem ntawm lub zog hluav taws xob yuav raug hloov mus rau hauv lub zog hluav taws xob thiab poob.Raws li lub kauj yog feem ntau raug mob los ntawm insulated tooj liab hlau, nws yog hu ua tooj liab poob.
Cov hlau poob ntawm transformer muaj ob yam.Ib qho yog hysteresis poob.Thaum AC tam sim no dhau los ntawm lub tshuab hloov pauv, cov kev taw qhia thiab qhov loj ntawm cov kab sib nqus ntawm lub zog dhau los ntawm silicon steel daim ntawv ntawm lub transformer yuav hloov raws li, ua rau cov molecules nyob rau hauv lub silicon steel daim ntawv mus rub tawm ib leeg thiab tso tawm lub zog, yog li poob ib feem ntawm lub zog hluav taws xob, uas yog hu ua hysteresis poob.Lwm qhov yog eddy tam sim no poob, thaum lub transformer ua hauj lwm.Muaj ib txoj kab sib nqus ntawm lub zog dhau los ntawm cov tub ntxhais hlau, thiab qhov cuam tshuam tam sim no yuav raug tsim tawm ntawm lub dav hlau perpendicular mus rau cov kab sib nqus ntawm lub zog.Txij li qhov tam sim no tsim lub voj kaw thiab ncig hauv lub voj voog, nws yog hu ua eddy tam sim no.Lub hav zoov ntawm eddy tam sim no ua rau cov tub ntxhais hlau kub thiab siv zog, uas yog hu ua eddy tam sim no poob.
Lub efficiency ntawm lub transformer yog ze ze rau lub hwj chim theem ntawm lub transformer.Feem ntau, lub zog loj dua, qhov tsawg dua qhov poob thiab cov zis hluav taws xob yog, thiab qhov ua tau zoo dua.Ntawm qhov tsis sib xws, lub zog me me, qhov ua haujlwm qis dua.
Post lub sij hawm: Dec-07-2022
