Ibon-grid inverter, tseem hu ua grid-tie inverter, yog ib qho tseem ceeb ntawm daim phiaj-txuas hnub ci photovoltaic (PV) systems. Nws ua lub luag haujlwm tseem ceeb hauv kev hloov hluav taws xob ncaj qha (DC) hluav taws xob tsim los ntawm lub hnub ci vaj huam sib luag rau hauv hluav taws xob hloov tam sim no (AC) uas tuaj yeem siv los ntawm tsev neeg lossis pub rov qab rau hauv daim phiaj.
Hauv tsab xov xwm no, peb yuav nkag mus tob rau hauv cov txheej txheem ntawm on-grid inverters, lawv cov txiaj ntsig, thiab seb lawv piv rau off-grid inverters.
Dab tsi yog On-Grid Inverter?
On-grid inverter yog ib qho khoom siv hluav taws xob uas hloov cov hluav taws xob DC uas tsim los ntawm cov hnub ci vaj huam sib luag rau hauv AC hluav taws xob uas tuaj yeem siv los ntawm cov khoom siv hauv tsev lossis pub rov qab rau hauv daim phiaj. Qhov no yog ua los ntawm cov txheej txheem hu ua qhov siab tshaj plaws zog taw tes nrhiav (MPPT) uas kuaj pom qhov zoo tagnrho voltage thiab tam sim no uas phim lub hnub ci vaj huam sib luag cov zis.
On-grid inverters yog tsim los synchronize nrog daim phiaj hluav taws xob hloov tam sim no zaus thiab voltage. Qhov no tso cai rau lawv kos lub zog los ntawm daim phiaj hluav taws xob thiab ntxiv cov kev tsis txaus ntawm lub zog tsim los ntawm lub hnub ci vaj huam sib luag.
On-grid inverters tuaj nyob rau hauv ntau qhov ntau thiab tsawg, xws li micro-inverters uas tuaj yeem tswj tau ib lub hnub ci vaj huam sib luag mus rau lub hauv paus loj inverters uas tuaj yeem tswj cov hluav taws xob tsim los ntawm lub ru tsev lossis hauv av-mounted hnub ci arrays.
Yuav Ua Li Cas On-Grid Inverter Ua Haujlwm?
Lub luag haujlwm tseem ceeb ntawm daim phiaj hluav taws xob yog hloov hluav taws xob DC rau hauv AC hluav taws xob uas tuaj yeem siv los ntawm cov khoom siv hauv tsev los yog pub rov qab rau hauv daim phiaj. Txhawm rau ua qhov no, on-grid inverters siv cov txheej txheem peb kauj ruam:
1. MPPT Control: Lub on-grid inverter tas li saib xyuas qhov voltage thiab tam sim no ntawm lub hnub ci vaj huam sib luag thiab siv cov txheej txheem hu ua MPPT tswj los txiav txim siab qhov zoo tshaj plaws voltage thiab tam sim no yuav tsum tau ua kom muaj zog tshaj plaws.
2. DC rau AC hloov dua siab tshiab: Thaum pom qhov zoo tshaj plaws voltage thiab tam sim no tau raug txheeb xyuas, lub on-grid inverter yuav hloov DC hluav taws xob tsim los ntawm hnub ci vaj huam sib luag rau hauv AC hluav taws xob uas tuaj yeem siv los ntawm cov khoom siv hauv tsev lossis rov qab rau hauv daim phiaj.
3. Grid Synchronization: On-grid inverters yog tsim los synchronize nrog daim phiaj hluav taws xob's alternating tam sim no zaus thiab voltage. Qhov no ua rau nws tuaj yeem ntxiv txhua qhov tsis txaus ntawm lub zog tsim los ntawm lub hnub ci vaj huam sib luag los ntawm kev kos lub zog ntawm daim phiaj.
Qhov zoo ntawm kev siv On-Grid Inverter
On-grid inverters tuaj nrog ntau cov txiaj ntsig uas ua rau lawv muaj kev xaiv nrov ntawm cov tswv tsev tab tom nrhiav los tsim lawv tus kheej hluav taws xob los ntawm lub hnub ci vaj huam sib luag. Qee qhov txiaj ntsig tseem ceeb ntawm kev siv on-grid inverter suav nrog:
1. Kev txuag nqi: On-grid inverters feem ntau tsis tshua kim tshaj li off-grid inverters vim lawv tsis xav tau roj teeb lossis lwm yam khoom siv hluav taws xob.
2. Kev Ua Tau Zoo: On-grid inverters yog tsim los ua haujlwm tandem nrog rau daim phiaj hluav taws xob, uas txhais tau hais tias lawv muaj qhov ua tau zoo dua li off-grid inverters. Qhov no ua rau muaj hluav taws xob tsawg tsawg, uas tuaj yeem txuag cov tswv tsev nyiaj ntawm lawv cov nqi hluav taws xob txhua hli.
3. Net Metering: Qee lub xeev hauv Teb Chaws Asmeskas tso cai rau cov tswv tsev nrog on-grid inverters koom rau hauv ib txoj haujlwm hu ua net metering. Qhov kev pab cuam no tso cai rau cov tswv tsev muag hluav taws xob ntau dhau los ntawm lawv cov hnub ci vaj huam sib luag rov qab rau hauv daim phiaj, txo lossis tshem tawm lawv cov nqi hluav taws xob txhua hli.
4. Yooj yim ntawm kev txhim kho: Txij li on-grid inverters tsis xav tau roj teeb lossis lwm yam khoom siv hluav taws xob, lawv yooj yim dua thiab tsis tshua kim rau nruab piv rau off-grid inverters.
Sib piv nrog Off-Grid Inverters
Off-grid inverters, tsis zoo li on-grid inverters, yog tsim los hloov DC hluav taws xob rau hauv AC hluav taws xob uas tuaj yeem siv los ntawm cov khoom siv hauv tsev lossis khaws cia hauv cov roj teeb rau kev siv tom qab. Lawv feem ntau yog siv nyob rau hauv tej thaj chaw deb uas tsis muaj kev nkag tau mus rau ib tug hluav taws xob daim phiaj.
Ib qho ntawm qhov sib txawv tseem ceeb ntawm ob yog tias off-grid inverters xav tau roj teeb lossis lwm yam khoom siv hluav taws xob khaws cia cov hluav taws xob ntau dhau los ntawm cov hnub ci vaj huam sib luag. Qhov no tuaj yeem ntxiv rau tag nrho cov nqi ntawm lub hnub ci.
Off-grid inverters kuj xav tau kev saib xyuas ntau dua vim lawv tso siab rau cov roj teeb los muab lub zog thaum lub hnub ci vaj huam sib luag tsis tsim hluav taws xob. Tsis tas li ntawd, cov roj teeb uas siv nyob rau hauv cov kab hluav taws xob off-grid kuj muaj lub neej ntev thiab yuav tsum tau hloov tsis tu ncua.
On-grid inverters ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm zoo ntawm daim phiaj-txuas hnub ci PV systems. Raws li peb tau pom, muaj ntau yam zoo rau kev siv on-grid inverters tshaj off-grid inverters, nrog rau kev ua tau zoo, kev txuag nqi, thiab muaj peev xwm koom nrog hauv cov kev pab cuam xws li net metering.
Yog tias koj tab tom xav txog kev txhim kho lub hnub ci vaj huam sib luag rau ntawm koj lub ru tsev, nws yog ib qho tseem ceeb uas yuav tsum ua tib zoo ntsuas koj lub zog xav tau thiab txiav txim siab seb qhov hluav taws xob hauv kab hluav taws xob lossis off-grid inverter yog qhov kev xaiv zoo tshaj plaws rau koj lub tsev. Nrog rau txoj kev npaj, koj tuaj yeem tsim koj tus kheej lub zog huv si thiab txo koj txoj kev vam khom rau cov khoom siv hluav taws xob ib txwm muaj.