Qee lub tebchaws hauv ntiaj teb, xws li Tebchaws Askiv thiab Tebchaws Meskas, siv 60Hz alternating tam sim no, vim lawv siv cov lej lej, dab tsi 12 lub hnub qub, 12 teev, 12 shillings sib npaug li 1 phaus thiab lwm yam.Tom qab lub teb chaws tau txais kev ua lej lej, yog li qhov zaus yog 50Hz.
Yuav ua li cas yog qhov zaus qis dua?
Ntxim hlub Dickson kuj poob rau Tesla thaum kawg, thiab AC tuav DC nrog qhov zoo ntawm qhov yooj yim hloov qhov voltage.Nyob rau hauv cov ntaub ntawv ntawm tib lub zog kis tau tus mob, nce qhov voltage yuav txo qhov kis tau tus mob tam sim no, thiab lub zog noj ntawm cov kab kuj yuav txo. Lwm qhov teeb meem ntawm DC kis tau tus mob yog qhov nyuaj rau kev tawg, thiab qhov teeb meem no tseem muaj teeb meem txog tam sim no.Qhov teeb meem ntawm DC kis tau tus mob yog tib yam li lub txim uas tshwm sim thaum lub tshuab hluav taws xob rub tawm ntawm lub sijhawm zoo tib yam. Thaum qhov tam sim no ncav cuag ib theem, lub txim tsis tuaj yeem tua. Peb hu nws "arc".
Rau alternating tam sim no, tam sim no yuav hloov cov kev taw qhia, yog li muaj ib lub sij hawm thaum tam sim no hla xoom. Siv lub sijhawm tam sim no me me, peb tuaj yeem txiav tawm cov kab tam sim no los ntawm cov khoom siv hluav taws xob tua hluav taws.Tab sis cov kev taw qhia ntawm DC tam sim no yuav tsis hloov. Yog tsis muaj qhov zero-hloov point, nws yuav nyuaj heev rau peb tua lub arc.
Lub transformer cia siab rau qhov kev hloov ntawm lub magnetic teb nyob rau hauv thawj sab kom paub lub kauj ruam-up los yog step-down ntawm lub thib ob sab.Qhov qeeb qeeb ntawm qhov sib nqus ntawm qhov sib nqus hloov, qhov tsis muaj zog qhov induction. Qhov xwm txheej hnyav yog DC, thiab tsis muaj induction txhua, yog li qhov zaus tsawg dhau.
Piv txwv li, qhov ceev ntawm lub cav tsheb yog nws cov zaus, xws li 500 rpm thaum idling, 3000 rpm thaum accelerating thiab hloov, thiab cov zaus hloov dua siab tshiab yog 8.3Hz thiab 50Hz feem.Qhov no qhia tau hais tias qhov siab dua, lub zog ntawm lub cav ntau dua.
Nyob rau hauv tib txoj kev, nyob rau tib lub zaus, lub cav loj dua, lub zog tso zis ntau dua, uas yog vim li cas cov cav diesel loj dua li cov roj av, thiab cov cav loj thiab muaj zog diesel tuaj yeem tsav tsheb hnyav xws li tsheb thauj mus los.
Nyob rau hauv tib txoj kev, lub cev muaj zog (los yog tag nrho cov rotating machinery) yuav tsum muaj ib tug me me thiab ib tug loj tso zis hwj chim. Nws tsuas muaj ib txoj hauv kev - txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nrawm, nws yog vim li cas qhov zaus ntawm qhov hloov pauv tam sim no tsis tuaj yeem qis dhau, vim peb xav tau qhov me me tab sis lub zog loj. hluav taws xob lub cev muaj zog.
Tib yam muaj tseeb rau lub tshuab cua txias inverter, uas tswj cov zis hluav taws xob ntawm lub tshuab cua txias compressor los ntawm kev hloov qhov zaus ntawm qhov hloov tam sim no.Hauv cov ntsiab lus, lub zog thiab zaus muaj kev sib raug zoo nyob rau hauv ib qho chaw.
Yuav ua li cas yog qhov zaus siab?Piv txwv li, yuav ua li cas txog 400Hz?
Wb tham txog kev poob ua ntej. Cov kab hluav taws xob, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob txhua tus muaj reactance. Lub reactance yog proportional rau zaus. tsawg.
Tam sim no, qhov reactance ntawm 50Hz kis tau tus mob yog hais txog 0.4 ohms, uas yog hais txog 10 npaug ntawm qhov tsis kam. Yog tias nws tau nce mus rau 400Hz, qhov reactance yuav yog 3.2 ohms, uas yog kwv yees li 80 npaug ntawm qhov tsis kam.Rau high-voltage kis kab, txo cov reactance yog tus yuam sij rau kev txhim kho lub zog kis tau tus mob.
Sib piv rau reactance, kuj muaj capacitive reactance, uas yog inversely proportional rau zaus. Qhov ntau zaus, qhov me me ntawm qhov capacitive reactance thiab qhov loj dua qhov xau tam sim no ntawm kab.Yog hais tias qhov zaus yog siab, qhov xau tam sim no ntawm cov kab kuj tseem yuav nce ntxiv.
Lwm qhov teeb meem yog qhov ceev ntawm lub tshuab hluav taws xob.Lub tshuab hluav taws xob tam sim no yog ib lub tshuab ib-theem, uas yog, ib khub ntawm cov hlau nplaum.Txhawm rau tsim hluav taws xob 50Hz, lub rotor tig ntawm 3000 rpm.Thaum lub cav ceev nce mus txog 3,000 rpm, koj tuaj yeem hnov lub cav vibrating. Thaum nws tig mus rau 6,000 lossis 7,000 rpm, koj yuav xav tias lub cav yuav dhia tawm ntawm lub hood.
Vim hais tias cov scenery hloov sai heev, cov rotors hnyav ntau ntau tons yog qeeb heev los txo los yog nce cov zis vim lub inertia loj (lub tswvyim ntawm ramp tus nqi), uas tsis tuaj yeem ua raws li cov kev hloov ntawm cua zog thiab photovoltaic zog tiam, yog li ntawd. tej zaum nws yuav tsum tau tso tseg. Cua thiab tso tseg qhov kaj.
Nws tuaj yeem pom los ntawm qhov no
Yog vim li cas vim li cas qhov zaus tsis tuaj yeem qis dhau: lub transformer tuaj yeem ua haujlwm tau zoo, thiab lub cev muaj zog tuaj yeem ua rau me me thiab loj hauv lub zog.
Yog vim li cas vim li cas qhov zaus yuav tsum tsis txhob siab dhau: qhov poob ntawm cov kab thiab cov cuab yeej siv tau me me, thiab lub tshuab hluav taws xob ceev tsis tas yuav siab dhau.
Yog li, raws li kev paub dhau los thiab tus cwj pwm, peb lub zog hluav taws xob tau teeb tsa ntawm 50 lossis 60 Hz.
Post lub sij hawm: Jul-06-2022