Cov inveroltaic inverters muaj cov qauv kev ua haujlwm zoo li cov inverters zoo tib yam. Ib qho inverter yuav tsum ua kom tau raws li cov phiaj xwm kev qhia hauv qab no los tau suav hais tias yog cov khoom tsim nyog.
1. Tawm Voltage Ruaj Ruaj
Hauv lub photovoltaic, hluav taws xob hluav taws xob tsim los ntawm lub hnub ci cell yog thawj zaug khaws cia los ntawm 220V lossis tom qab ntawd hloov pauv mus ua 220V lossis 380V hloov tshiab tam sim no los ntawm Inverter. Txawm li cas los xij, lub roj teeb cuam tshuam los ntawm nws tus kheej kev them nqi thiab tawm, thiab nws cov zis voltage dav dav dav. Piv txwv li, rau lub roj teeb nrog tus nominal 12v, nws tus nqi voltage tuaj yeem sib txawv ntawm 10.8 thiab 14.4V (tshaj li qhov no yuav ua rau muaj roj teeb puas). Rau ib qho kev tsim nyog inverter, thaum cov lus qhia kev hloov pauv tsis pub dhau qhov no, thiab thaum lub nra hloov hluav taws xob, thiab thaum cov zis hluav taws xob tsis dhau ± 10% ntawm tus nqi ntsuas.
2. WaveForm distortion ntawm cov zis hluav taws xob
Rau sine dej inverters, qhov siab tshaj plaws tso cai wervormform distortion (lossis cov ntsiab lus harmonic) yuav tsum tau teev tseg. Feem ntau qhia raws li tag nrho Waveform distortion ntawm cov zis voltage, nws tus nqi yuav tsum tsis pub tshaj 5% (ib leeg-theem tso cai tso cai rau 10%). Txij li thaum lub siab-txiav txim siab Harvonic tso zis los ntawm cov khoom siv hluav taws xob ntxiv, yog tias cov hluav taws xob hluav taws xob, yog tias tsis muaj peev xwm ua rau cov khoom siv hluav taws xob thiab cuam tshuam rau cov kab ke. Kev ua haujlwm ua haujlwm.
3. Cov zis tso zis ntau zaus
Rau kev thauj khoom suav nrog cov tshuab ntxhua khaub ncaws, xws li ntxhua khaub ncaws, cov tub yees, thiab lwm yam yuav ua rau cov khoom siv ua kom sov thiab txo qis kev ua haujlwm ntawm lub system. Cov zis ntau yuav tsum yog tus nqi sib luag, feem ntau yog lub zog zaus 50hz, thiab nws qhov kev sib txawv yuav tsum yog li ntawm ± 1% raws li kev ua haujlwm ua haujlwm.
4. Thauj lub zog
Yam ntxwv ntawm lub peev xwm ntawm inverter los ua cov inductive lossis capactrativitive thauj khoom. Lub thauj khoom muaj zog ntawm cov sine yoj inverter yog 0.7 mus rau 0.9, thiab tus nqi rated yog 0.9. Nyob rau hauv cov ntaub ntawv ntawm qee lub zog load, yog tias lub zog siv hluav taws xob ntawm Inverter yog tsawg, uas yuav tsum muaj ntawm lub inverter yuav nce ntxiv, uas yuav ua kom pom lub zog pom ntawm AC Circuital ntawm lub photovoltaic. Raws li cov kev nce nyiaj tam sim no, qhov poob yuav pab tau nce ntxiv, thiab qhov system ua tau zoo kuj tseem yuav muaj tsawg.
5. Inverter efficiency
Kev ua tau zoo ntawm Inverter hais txog qhov sib piv ntawm cov zis siv zog rau lub hwj chim tawm hauv qab cov kev ua haujlwm uas muaj feem pua. Nyob rau hauv dav dav, lub nominal efficiency ntawm lub photovoltaic inverter hais txog kom dawb huv tsis kam thauj khoom, hauv qab 80% load. s efficiency. Txij li thaum cov nqi tag nrho ntawm cov photovoltaic yog qhov siab, ua haujlwm ntawm lub photovoltaic yuav tsum tau txo, thiab tus nqi-ua tau zoo ntawm lub photovoltaic yuav tsum tau txhim kho. Tam sim no, cov nominal efficiency ntawm cov inverstream inverters yog nruab nrab ntawm 80% thiab 95%, thiab kev ua haujlwm ntawm cov roj ntsha tsis muaj tsawg dua 85%. Hauv cov txheej txheem tsim qauv tiag tiag ntawm cov photovoltaic, tsis yog yuav raug xaiv ua haujlwm, tab sis tib lub sijhawm, cov kab ke yuav tsum tau tsim kev ua haujlwm rau lub xov tooj photovoltisic, tab sis tib lub sijhawm, cov kab ke yuav tsum tau tsim kev ua haujlwm rau qhov kev ua haujlwm zoo li ntau tau.
6. Rated Tso Tawm Tam Sim No (lossis Rated Cov Khoom Siv Muaj Peev Xwm)
Qhia txog cov tso zis tso tawm tam sim no ntawm Inverter tsis pub dhau lub load lub zog muaj ntau. Qee cov khoom lag luam inverter muab cov kev ntsuas cov paj hluav taws xob muaj peev xwm ua rau VA lossis KVA. Lub sijhawm ntsuas muaj peev xwm ntawm Inverter yog thaum cov zis lub zog muaj zog yog 1 (piv txwv li cov paj nruag ntshiab voltage yog cov khoom ntawm cov ntawv tso zis tawm tam sim no.
7. Kev Tiv Thaiv Kev Ntsuas
Ib qho inverter nrog kev ua tau zoo yuav tsum tau ua tiav kev tiv thaiv kev ua haujlwm lossis ntsuas nws tus kheej thiab lwm yam ntawm cov kab ke tsis raug puas.
(1) Cov tswv yim undervoltage tsab cai:
Thaum cov lus qhia voltage yog qis dua 85% ntawm cov ntsuas hluav taws xob, cov inverter yuav tsum muaj kev tiv thaiv thiab zaub.
(2) Cov tswv yim OverVoltage tuav pov hwm nyiaj txiag:
Thaum cov lus qhia voltage yog siab dua 130% ntawm cov ntsuas hluav taws xob, cov inverter yuav tsum muaj kev tiv thaiv thiab zaub.
(3) overcurrent kev tiv thaiv:
Qhov kev tiv thaiv dhau ntawm cov inverter yuav tsum muaj peev xwm ua kom muaj kev ua raws sijhawm lossis cov nqi tam sim no, thiaj li tiv thaiv nws los ntawm kev puas tsuaj tam sim no. Thaum cov haujlwm ua haujlwm tam sim no ntau tshaj 150% ntawm cov nqi ntsuas, lub inverter yuav tsum muaj peev xwm tiv thaiv.
(4) Cov zis luv-Circuit Coup
Lub inverter luv luv-Circuit Court kev tiv thaiv lub sijhawm yuav tsum tsis pub tshaj 0.5s.
(5) Cov ntaub ntawv thim rov qab polarity tiv thaiv:
Thaum cov qauv zoo thiab tsis zoo ntawm cov tswv yim ntawm cov kev tawm tswv yim tau thim rov qab, lub inverter yuav tsum muaj kev tiv thaiv muaj nuj nqi thiab tso saib.
(6) kev tiv thaiv xob tiv thaiv:
Lub inverter yuav tsum muaj kev tiv thaiv xob laim.
(7) qhov kub tshaj qhov kev tiv thaiv kub, thiab lwm yam.
Tsis tas li ntawd, rau cov inverters tsis muaj voltant stabilization ntsuas, lub inverter yuav tsum muaj cov zis tiv thaiv kev ntsuas los tiv thaiv lub nra ntawm kev puas tsuaj.
8. Pib yam ntxwv
Cov yam ntxwv ntawm lub inverter pib nrog thauj khoom thiab kev ua haujlwm thaum ua haujlwm zoo. Lub inverter yuav tsum tau lav kom pib ua kom ntseeg tau raws li kev thauj khoom.
9. Suab nrov
Transformers, lim cov inductors, electromagnetic hloov thiab kiv cua hauv lub hwj huam hluav taws xob hauv lub suab nrov. Thaum lub inverter yog nyob rau hauv ib txwm ua haujlwm, nws lub suab nrov yuav tsum tsis pub tshaj 80db, thiab lub suab nrov ntawm ib qho me me inverter yuav tsum tsis pub tshaj 65db.
Lub Sijhawm Post: Feb-08-2022
