A ntxhib sine yoj yog ib qho AC waveform uas kwv yees kwv yees ib nthwv dej ntshiab. Nws tuaj yeem muaj lub hnab ntawv qib siab, sawv cev los ntawm ib ntu ntawm cov duab plaub lossis trapezoidal pulses ntawm txawv polarity. Qhov kwv yees kwv yees sine yoj AC teeb liab muaj nyob ntawm qhov tso zis ntawm feem ntau cov khoom siv hluav taws xob tsis cuam tshuam (UPS) siv.
Txoj haujlwm ntawm cov khoom siv hluav taws xob tsis cuam tshuam
Lub luag haujlwm tseem ceeb ntawm UPS yog txhawm rau txuag AC voltage muab cov neeg siv khoom thaum nws poob tam sim hauv lub network. Lawv tsis ua cov haujlwm ntawm mains voltage stabilization, tab sis yog qhov chaw kub ntxhov ntawm AC voltage nrog kwv yees sinusoid. Cov khoom siv hluav taws xob tsis sib cuam tshuam tsis yog rau kev ua haujlwm txuas ntxiv ntawm cov cuab yeej txuas nrog lawv thaum muaj xwm txheej ntawm cov kab hluav taws xob loj.
UPS yuav tsum ua kom cov neeg siv khoom siv sijhawm ntev txaus kom ua tiav cov txheej txheem uas tsis tuaj yeem cuam tshuam tam sim ntawd. Thaum lub sijhawm ua haujlwm ntawm UPS nrog qhov kwv yees sine yoj, cov xwm txheej yuav raug tsim los rau kev kaw haujlwm ib txwm muaj. Qhov no yuav ua rau nws ua haujlwm rau kev siv yav tom ntej. Koj tuaj yeem nrhiav tau ib qho kev siv rau UPS-lub zog tsis cuam tshuam. UPS nyob rau hauv nws yog ib tug luv luv ntawm lub npe lus Askiv UPS.
Kev faib cov peev txheej
Nyob ntawm qhov yuav tsum tau ua rau qhov zoo ntawm cov khoom siv hluav taws xob AC, UPS-khoom siv hluav taws xob tsis cuam tshuam tuaj yeem muab faib ua ntau hom:
- tawm-kab qhov chaw uas yog qhov chaw xwm txheej ceev ntawm hom thaub qab;
- kab-kev sib tham lossis kab-kev sib tham sib muaj peev xwm ua kom ruaj khov ntawm lub zog hluav taws xob nrog me ntsis sib txawv los ntawm tus nqi nominal, thiab hloov mus rau hom hluav taws xob thaum muaj xwm ceev nrog kwv yees sine yoj thaum nws ploj tag;
- on-line, lossis UPS nrog ob npaug ntawm kev hloov pauv ntawm hluav taws xob, muab cov kev sib txuas nrog cov khoom siv hluav taws xob ruaj khov thaum muaj qhov hloov pauv ntawm qhov hluav taws xob tseem ceeb thiab ua haujlwm ntawm qhov chaw kub ntxhov thaum nws raug tua tag.
Ib qho chaw tsis muaj kev cuam tshuam ntawm txhua yam suav nrog lub roj teeb rov qab, uas yog lub khw muag khoom hluav taws xob. Nyob ntawm qhov yuav tsum tau ua rau lub zog zoo ntawm cov khoom siv uas yog lub nra ntawm UPS nrog kwv yees sine yoj,Qee qhov kev daws teeb meem raug siv.
UPS off-line
Passive UPS ntawm hom no yog lub hauv paus ntawm kev ua haujlwm standby. Nws switching ntaus ntawv, nyob rau hauv ib txwm mains voltage zoo tsis, muab ncaj qha kev twb kev txuas ntawm lub load rau lub mains. Nyob rau hauv qhov kev tshwm sim ntawm lub sij hawm luv luv lub hwj chim tsis ua hauj lwm nyob rau hauv lub UPS input, lub switching ntaus ntawv hloov lub hwj chim mov mus rau cov neeg siv khoom nyob rau hauv thaum muaj xwm ceev (thaub qab) hom. Lub hauv paus ntawm lub zog hluav taws xob nyob rau hauv cov ntaub ntawv no yog lub built-in roj teeb.
Nws qhov hluav taws xob DC hloov pauv los ntawm inverter rau hauv kev hloov pauv AC voltage sine yoj, uas tau muab los ntawm kev sib cuag ntawm electromagnetic relay ntawm qhov hloov mus rau lub hwj chim load. Rau recharge lub roj teeb (roj teeb) yog qhov voltage rectifier ntawm sab nraud fais fab mov. Txhawm rau tiv thaiv nws los ntawm kev cuam tshuam ntau zaus uas tshwm sim thaum lub sijhawm ua haujlwm ntawm pulse inverter, UPS yog muab nrog lub lim. Nws cov ntsiab lus tseem tiv thaiv cov khoom siv thauj khoom los ntawm lub zog luv luv.
Line interactive sources
Line-interactiv A UPS, tsis zoo li qhov chaw tos txais, muaj peev xwm ua kom lub zog ruaj khov thaum lub thauj khoom ncaj qha mus rau nws los ntawm kev sib cuag ntawm electromagnetic relay. Qhov no yog ua kom ntseeg tau los ntawm kev siv autotransformer hauv cov khoom siv hluav taws xob. Hloov ntawm nws cov windings yog ua tiav nyob ntawm qhov loj ntawm lub mains voltage. Nrog nws nce los yog txo, qhov hloov voltage ntawm nws cov zistuav tus nqi nominal ntawm 220 V. Lub autotransformer ntawm feem ntau UPS ntawm hom no tswj nyob rau hauv qhov ntau (150-270) V ntawm qhov kev hloov ntawm qhov voltage ntawm cov khoom siv sab nraud.
Hloov pauv ntawm tus contactor thiab hloov mus rau qhov kev pabcuam thaum muaj xwm txheej ceev ntawm lub thauj khoom nrog hloov kho sinusoid tshwm sim thaum lub zog hluav taws xob hloov pauv ntau dhau, dhau ntawm kev tswj hwm ntau. Cov kev cai raug txiav txim los ntawm tus naj npawb ntawm cov kais dej (cov kauj ruam) ntawm autotransformer. Hauv hom xwm txheej ceev ntawm lub zog ntawm cov khoom siv thauj khoom nrog qhov kwv yees sinusoid AC voltage, kev ua haujlwm tshwm sim tib yam li hauv ib qho off-line UPS.
on-line UPS
Kev hloov pauv ob zaug ntawm hluav taws xob hluav taws xob hauv cov khoom siv hluav taws xob tsis cuam tshuam ntawm hom no tso cai rau koj kom tau txais qhov kwv yees sine yoj ntawm cov zis AC voltage, nce mus rau hauv cov duab mus rau ib qho ntshiab sine. Lub mains voltage hloov dua siab tshiab rau DC los ntawm lub rectifier yog ces hloov dua siab tshiab rau AC los ntawm lub inverter, uas yog siv rau lub hwj chim load.
Lub roj teeb built-in yog them los ntawm qhov ncaj qha tam sim no ntawm lub rectifier thiab muab tso rau hauv kev ua haujlwm hauv hom xwm txheej ceev. Lub zog DC uas muaj zog yog hloov los ntawm inverter rau hauv qhov tso zis AC voltage uas muab cov khoom siv thauj khoom. Hom kab hluav taws xob no tso cai rau koj txuas lub roj teeb sab nraud ntxiv rau UPS.
Thaum qhov hluav taws xob tseem ceeb tau rov qab los ntawm nws tus nqi ib txwm, hloov pauv tshwm simthauj khoom los ntawm thawj AC network. Lub peev xwm hluav taws xob ntawm lub roj teeb rau UPS txiav txim siab lub sijhawm uas cov neeg siv khoom tuaj yeem ua haujlwm nrog qhov poob ntawm qhov hluav taws xob tam sim ntawd.
UPS specifications
Qhov kev xaiv ntawm UPS yog tsim los ntawm nws cov yam ntxwv. Cov yam ntxwv tshwj xeeb uas txiav txim siab qhov zoo ntawm kev ua tiav ntawm cov kev cai rau cov khoom ntawm lub hom phiaj no suav nrog:
- fais fab ntawm qhov tso zis ntawm qhov chaw nrog cov khoom txuas nrog, ntsuas hauv volt-amperes (VA) lossis watts (W);
- tso zis voltage ntau nrog load txuas, ntsuas hauv volts (V);
- sijhawm hloov pauv, uas txhais lub sijhawm hloov pauv lub zog rau lub nra ntawm lub roj teeb standby hom, ntsuas hauv milliseconds (ms);
- input mains voltage ntau nyob rau hauv uas UPS muaj peev xwm stabilize cov zis voltage yam tsis tau hloov mus rau lub roj teeb backup hom;
- nonlinear distortion yam, uas txiav txim siab nyob rau hauv feem pua cov ntsiab lus qhov sib txawv ntawm cov teeb liab tso zis duab los ntawm ib tug ntshiab sinusoid;
- sijhawm ua haujlwm nyob rau hauv ib leeg-ib leeg roj teeb thaub qab hom nrog cov khoom sib txuas, txiav txim siab los ntawm lub peev xwm hluav taws xob ntawm lub roj teeb sab hauv;
- kev pabcuam lub neej ntawm tus kheej cov roj teeb, nyob ntawm cov thev naus laus zis ntawm lawv cov khoom siv.
Thaum xaiv UPS, tus nqi ntawm cov khoom siv hluav taws xob tsis cuam tshuam kuj ua lub luag haujlwm tseem ceeb. Nws ncaj qha nyob ntawm cov kev daws teeb meem circuitry siv los ntawm tus tsim tawm thaum tsim cov qauv xaiv los ntawm cov neeg siv khoom, thiab thaj tsam ntawm ob mus rau kaum ob.txhiab rubles.
Applications
UPS cov khoom siv hluav taws xob tsis cuam tshuam tuaj yeem siv ua ke nrog cov khoom siv tiv thaiv - cov khoom siv uas suav nrog cov khoom siv hluav taws xob hloov.
UPS tsis yog siv los siv hluav taws xob rau cov neeg siv khoom nrog cov khoom siv hluav taws xob tseem ceeb (lub zog hluav taws xob hloov hluav taws xob ntawm cov qauv qub ntawm cov khoom siv hluav taws xob, lub cev muaj zog windings, cov twj siv hluav taws xob hauv tsev). Txhua qhov kev siv hluav taws xob tsis muaj kev cuam tshuam uas twb muaj lawm yog tsim los rau qee yam ntawm cov neeg siv khoom, suav nrog nws qhov zoo thiab qhov tsis zoo.
Zoo kawg
Cov kab lus muab cov ntsiab lus luv luv ntawm cov khoom siv hluav taws xob tsis cuam tshuam tam sim no nrog kev hloov pauv sine yoj. Cov kev daws teeb meem hauv Circuit Court siv los ntawm cov neeg tsim khoom thaum lawv tsim tau raug txiav txim siab. Tom qab nyeem cov ntaub ntawv uas tau nthuav tawm, tus nyeem ntawv, uas xav yuav UPS los daws nws cov teeb meem, yuav tuaj yeem kawm cov txheej txheem ntawm cov ntaub ntawv rau nws yam tsis muaj teeb meem. Tib lub sijhawm, ib tus yuav tsum tsis txhob hnov qab tias cov khoom siab txhais tau tias tus nqi siab dua thaum yuav nws.
