Qee tus neeg hais tias tus nqi photovoltaic inverter yog ntau dua li qhov module, yog tias tsis siv lub zog siab tshaj plaws, nws yuav ua rau cov khoom siv pov tseg.Yog li ntawd, nws xav tias tag nrho cov tsim hluav taws xob ntawm cov nroj tsuag tuaj yeem nce ntxiv los ntawm kev ntxiv photovoltaic modules raws li qhov siab tshaj plaws input zog ntawm lub inverter.Tab sis puas yog tiag tiag?

Qhov tseeb, qhov no tsis yog qhov uas tus phooj ywg hais.Photovoltaic inverter thiab photovoltaic module piv yog qhov tseeb ntawm kev faib ua feem.Tsuas yog tsim nyog collocation, scientific installation yuav yeej muab tag nrho cov kev ua si rau cov kev ua tau zoo ntawm txhua qhov chaw, kom ua tau raws li qhov zoo ntawm lub zog tsim efficiency.Ntau yam yuav tsum tau txiav txim siab ntawm photovoltaic inverter thiab photovoltaic module, xws li lub teeb elevation factor, installation txoj kev, site factor, module thiab inverter nws tus kheej thiab lwm yam.

Ua ntej, lub teeb elevation factor

Hnub ci kev siv hluav taws xob muaj peev xwm muab faib ua tsib chav kawm, thawj, thib ob thiab thib peb hom ntawm thaj chaw uas cov khoom siv teeb pom kev zoo yog nplua nuj, feem ntau ntawm peb lub teb chaws belongs rau cov chav kawm no, yog li nws yog qhov tsim nyog rau kev teeb tsa photovoltaic lub zog tsim hluav taws xob.Txawm li cas los xij, qhov hluav taws xob siv hluav taws xob sib txawv heev hauv thaj chaw sib txawv.Feem ntau hais lus, qhov siab dua lub hnub ci lub kaum sab xis, lub hnub ci hluav taws xob muaj zog dua, thiab qhov siab dua qhov siab, lub hnub ci hluav taws xob muaj zog dua.Nyob rau hauv cov cheeb tsam uas muaj hnub ci hluav taws xob siv hluav taws xob siab, cov cua kub dissipation nyhuv ntawm photovoltaic inverter kuj tsis zoo, yog li lub inverter yuav tsum tau derated khiav, thiab qhov feem ntawm cov khoom yuav qis dua.

Ob, installation yam

Lub inverter thiab tivthaiv piv ntawm qhov chaw nres tsheb photovoltaic sib txawv nrog rau qhov chaw teeb tsa thiab txoj kev.

1.Dc sab system efficiency

Vim tias qhov kev ncua deb ntawm lub inverter thiab lub module yog luv heev, DC cable yog luv heev, thiab qhov poob yog tsawg, qhov efficiency ntawm DC sab system tuaj yeem ncav cuag 98%.Vim tias DC cable ntev ntev, lub zog ntawm lub hnub ci hluav taws xob mus rau photovoltaic module yuav tsum dhau los ntawm DC cable, lub thawv confluence, DC faib txee thiab lwm yam khoom siv, thiab kev ua haujlwm ntawm DC sab system feem ntau qis dua 90%. .

2. Daim phiaj hluav taws xob hloov hluav taws xob

Qhov ntsuas siab tshaj plaws tso zis hluav taws xob ntawm lub inverter tsis tas li.Yog tias daim phiaj-txuas kab sib txuas poob, ces lub inverter tsis tuaj yeem ncav cuag nws cov zis tso zis.Piv txwv li, peb txais yuav ib lub 33kW inverter, qhov siab tshaj plaws tso zis tam sim no yog 48A thiab cov ntsuas tso zis voltage yog 400V.Raws li peb-theem fais fab kev suav mis, lub zog tso zis yog 1.732 * 48 * 400 = 33kW.Yog tias daim phiaj hluav taws xob poob mus rau 360, lub zog tso zis yuav yog 1.732 * 48 * 360 = 30kW, uas tsis tuaj yeem ncav cuag lub zog ntsuas.Ua kom lub zog tsim hluav taws xob tsawg.

3.inverter tshav kub dissipation

Qhov kub ntawm lub inverter kuj cuam tshuam rau lub zog tso zis ntawm lub inverter.Yog hais tias lub inverter tshav kub dissipation nyhuv tsis zoo, ces lub zog tso zis yuav txo.Yog li ntawd, lub inverter yuav tsum tau muab ntsia rau hauv tsis muaj qhov ncaj qha tshav ntuj, zoo cua qhov chaw.Yog hais tias lub installation ib puag ncig tsis zoo txaus, ces tsim nyog derating yuav tsum tau txiav txim siab los tiv thaiv lub inverter los ntawm cua sov.

Peb.Cheebtsam lawv tus kheej

Photovoltaic modules feem ntau muaj kev pab cuam lub neej ntawm 25-30 xyoo.Txhawm rau kom ntseeg tau tias lub module tseem tuaj yeem tswj tau ntau dua 80% kev ua haujlwm tom qab lub neej ua haujlwm ib txwm muaj, lub Hoobkas tsim qauv muaj qhov txwv txaus ntawm 0-5% hauv kev tsim khoom.Tsis tas li ntawd, peb feem ntau ntseeg hais tias tus qauv kev ua haujlwm ntawm lub module yog 25 °, thiab photovoltaic module kub poob, lub zog module yuav nce.

Plaub, inverter tus kheej yam

1.inverter ua hauj lwm efficiency thiab lub neej

Yog tias peb ua lub inverter ua haujlwm hauv lub zog siab ntev, lub neej ntawm inverter yuav raug txo.Kev tshawb fawb qhia tau hais tias lub neej ntawm lub inverter ua hauj lwm ntawm 80% ~ 100% fais fab tuag yog txo los ntawm 20% tshaj li ntawm 40% ~ 60% rau lub sij hawm ntev.Vim tias lub kaw lus yuav ua kom sov ntau thaum ua haujlwm ntawm lub zog siab rau lub sijhawm ntev, qhov system ua haujlwm kub siab dhau, uas cuam tshuam rau lub neej kev pabcuam.

2,qhov zoo tshaj plaws ua hauj lwm voltage ntau ntawm lub inverter

Inverter ua hauj lwm voltage ntawm lub ntsuas hluav taws xob, lub siab tshaj plaws efficiency, ib theem 220V inverter, inverter input nyob voltage 360V, peb-theem 380V inverter, input nyob voltage 650V.Xws li 3 kw photovoltaic inverter, nrog lub zog ntawm 260W, ua haujlwm voltage ntawm 30.5V 12 blocks yog qhov tsim nyog tshaj plaws;Thiab 30 kW inverter, lub zog faib rau 260W Cheebtsam 126 daim, thiab tom qab ntawd txhua txoj kev 21 txoj hlua yog qhov tsim nyog tshaj plaws.

3. Muaj peev xwm dhau ntawm inverter

Zoo inverters feem ntau muaj peev xwm tshaj, thiab qee lub lag luam tsis muaj peev xwm tshaj.Lub inverter nrog muaj zog tshaj lub peev xwm yuav overload lub siab tshaj plaws tso zis hwj chim 1.1 ~ 1.2 lub sij hawm, yuav nruab nrog 20% ​​ntau Cheebtsam tshaj lub inverter tsis muaj peev xwm overload.

Photovoltaic inverter thiab module tsis yog random thiab rau, ua kom tsim nyog collocation, thiaj li yuav tsis poob.Thaum txhim kho photovoltaic fais fab chaw nres tsheb, peb yuav tsum xav txog ntau yam ua tiav, thiab xaiv cov tuam txhab photovoltaic nrog cov kev tsim nyog zoo rau kev teeb tsa.