Hauv peb lub neej niaj hnub, peb yuav tsum siv hluav taws xob txhua hnub, thiab peb tsis paub txog qhov tam sim no ncaj qha thiab hloov pauv tam sim no, piv txwv li, cov khoom siv hluav taws xob tam sim no yog tam sim no ncaj qha, thaum lub tsev thiab cov khoom siv hluav taws xob hloov pauv tam sim no, yog li cas. Qhov txawv ntawm ob hom hluav taws xob no?
"Direct tam sim no", tseem hu ua "tam sim no tsis tu ncua", qhov tam sim no tsis tu ncua yog hom tam sim no ncaj qha, yog tam sim no loj thiab kev taw qhia tsis hloov nrog lub sijhawm.
Hloov tam sim no
Hloov tam sim no (AC)yog qhov tam sim no uas nws qhov loj thiab cov kev taw qhia hloov pauv ib ntus, thiab hu ua alternating tam sim no lossis tsuas yog alternating tam sim no vim qhov nruab nrab tus nqi ntawm lub caij nyoog tam sim no hauv ib lub voj voog yog xoom.
Cov kev taw qhia yog tib yam rau qhov sib txawv ncaj qha tam sim no.Feem ntau cov waveform yog sinusoidal.Hloov tam sim no tuaj yeem xa hluav taws xob zoo.Txawm li cas los xij, muaj lwm yam waveforms uas tau siv tiag tiag, xws li cov nthwv dej ntawm daim duab peb sab thiab cov vuag plaub.
Kev sib txawv
1. Kev taw qhia: Nyob rau hauv ncaj qha tam sim no, cov kev taw qhia ntawm tam sim no ib txwm nyob twj ywm tib yam, ntws nyob rau hauv ib qho kev taw qhia.Nyob rau hauv sib piv, cov kev taw qhia ntawm tam sim no nyob rau hauv alternating tam sim no hloov raws sij hawm, alternating ntawm zoo thiab tsis zoo cov lus qhia.
2. Kev hloov hluav taws xob: Qhov hluav taws xob ntawm DC tseem nyob tas li thiab tsis hloov raws sijhawm.Qhov voltage ntawm alternating tam sim no (AC), ntawm qhov tod tes, yog sinusoidal lub sij hawm, thiab qhov zaus feem ntau yog 50 Hz lossis 60 Hz.
3. Kev sib kis deb: DC muaj lub zog me me thaum lub sij hawm kis tau tus mob thiab tuaj yeem kis tau mus ntev.Thaum AC fais fab tuag nyob rau hauv qhov kev ncua deb yuav muaj lub zog loj poob, yog li yuav tsum tau kho thiab them nyiaj los ntawm lub transformer.
4. Hom fais fab mov: Cov khoom siv hluav taws xob ntau rau DC suav nrog cov roj teeb thiab lub hnub ci, thiab lwm yam. Cov khoom siv hluav taws xob no tsim DC tam sim no.Thaum lub zog AC feem ntau yog tsim los ntawm cov chaw tsim hluav taws xob thiab muab los ntawm kev hloov pauv thiab cov kab xa mus rau kev siv hauv tsev thiab kev lag luam.
5. Cov cheeb tsam ntawm daim ntawv thov: DC feem ntau siv rau hauv cov khoom siv hluav taws xob, hluav taws xob tsheb,hnub ci zog systems, thiab lwm yam. AC yog dav siv hauv tsev siv.Hloov tam sim no (AC) yog dav siv hauv tsev hluav taws xob, kev tsim khoom, thiab kev xa hluav taws xob.
6. Lub zog tam sim no: Lub zog tam sim no ntawm AC tuaj yeem sib txawv hauv cov voj voog, thaum DC feem ntau tseem nyob tas li.Qhov no txhais tau hais tias rau tib lub zog, lub zog tam sim no ntawm AC yuav ntau dua li ntawm DC.
7. Qhov cuam tshuam thiab kev nyab xeeb: Vim qhov kev hloov pauv ntawm cov kev taw qhia tam sim no thiab qhov hluav taws xob ntawm kev hloov tam sim no, nws yuav ua rau hluav taws xob hluav taws xob, inductive thiab capacitive cuam tshuam.Cov teebmeem no yuav muaj kev cuam tshuam rau kev ua haujlwm ntawm cov cuab yeej thiab tib neeg kev noj qab haus huv nyob rau qee qhov xwm txheej.Hauv qhov sib piv, DC lub zog tsis muaj cov teeb meem no thiab yog li nyiam rau qee yam khoom siv rhiab lossis kev siv tshwj xeeb.
8. Kev xa tawm tsis zoo: DC lub zog muaj zog poob qis thaum kis tau mus ntev vim nws tsis cuam tshuam los ntawm qhov tsis kam thiab inductance ntawm AC lub zog.Qhov no ua rau DC muaj txiaj ntsig zoo hauv kev sib kis mus ntev thiab hloov hluav taws xob.
9. Cov khoom siv: cov khoom siv AC (piv txwv li, transformers, generators, thiab lwm yam) yog qhov ntau dua thiab paub tab, thiab yog li ntawd nws cov nqi kuj tsawg.Cov khoom siv DC (piv txwv li,inverter, voltage regulators, etc.), ntawm qhov tod tes, feem ntau kim dua.Txawm li cas los xij, nrog kev txhim kho ntawm DC thev naus laus zis, tus nqi ntawm cov khoom siv DC maj mam txo qis.
Post lub sij hawm: Sep-28-2023
