Cov lus nug ntawm yuav ua li cas muaj pes tsawg lub hnub ci vaj huam sib luag 5kW inverter tuaj yeem tswj tau muaj ntau yam kev ua haujlwm, suav nrog hom hnub ci vaj huam sib luag, lawv cov wattage, lub peev xwm ntawm lub inverter, thiab cov qauv tsim kev xav zoo li hnub ci cables thiab hnub ci xov hlau. Tsab ntawv xov xwm no yuav piav qhia txog cov xwm txheej no kom ntxaws thiab muab kev nkag siab txog kev ua kom koj lub hnub ci kom zoo tshaj plaws.
Nkag siab txog Lub Peev Xwm ntawm 5kW Inverter
Lub 5kW inverter tuaj yeem hloov mus txog 5, 000 watts ntawm DC (direct tam sim no) hluav taws xob rau AC (alternating tam sim no) hluav taws xob. Tus naj npawb ntawm cov hnub ci vaj huam sib luag nws tuaj yeem ua tau nyob ntawm qhov wattage ntawm ib tus neeg panels. Piv txwv li:
Yog tias txhua lub hnub ci vaj huam sib luag muaj wattage ntawm 300W, lub inverter tuaj yeem siv li ntawm 16 mus rau 18 panels (nyob ntawm seb qhov system tsim).
Yog tias cov khoom siv hluav taws xob ntau dua, xws li 400W, siv, lub inverter tuaj yeem tuav 12 mus rau 14 panels.
Txawm li cas los xij, oversizing lub hnub ci array me ntsis-los ntawm 10-20% saum lub inverter lub peev xwm-yog ib qho kev coj ua los suav rau lub zog poob thiab txhim kho kev ua haujlwm tag nrho. Qhov no txhais tau tias koj tuaj yeem theoretically txuas panels nrog tag nrho wattage ntawm 5.5kW txog 6kW.
Lub luag haujlwm ntawm Solar Cables thiab Solar Wires
Kev hloov hluav taws xob zoo los ntawm lub hnub ci vaj huam sib luag mus rau lub inverter yog nyob ntawm cov khoom siv hluav taws xob zoo thiab cov xov hluav taws xob hnub ci. Ntawm no yog li cas lawv cuam tshuam rau hauv qhov system:
Hnub ci Cables: Hnub ci cables yog tsim tshwj xeeb rau cov tshuab photovoltaic thiab siv los txuas cov hnub ci vaj huam sib luag. Lawv tiv taus UV hluav taws xob, huab cua, thiab kub hloov pauv. Kev loj hlob zoo ntawm cov hnub ci cables yog qhov tseem ceeb kom txo qis hluav taws xob poob thaum sib kis.
Hnub Ci Hlau: Hnub ci xov hlau feem ntau yog siv rau kev sib txuas sab hauv hauv cov hlua vaj huam sib luag lossis nruab nrab ntawm lub thawv sib txuas thiab lub inverter. Kev xaiv ntawm cov khoom siv hlau (tooj liab lossis txhuas), ntsuas, thiab hom rwb thaiv tsev cuam tshuam rau kev siv hluav taws xob.
Yam tseem ceeb uas yuav tsum tau xav txog thaum xaiv cov hnub ci cables thiab cov xov hlau:
Kev ntsuas hluav taws xob: Cov kab hluav taws xob thiab cov xaim hluav taws xob yuav tsum txhawb nqa qhov system qhov hluav taws xob, uas tuaj yeem ncav cuag 1,500V hauv cov tshuab niaj hnub.
Tam sim no muaj peev xwm: Xyuas kom meej tias cov hnub ci cables thiab cov xaim hluav taws xob tuaj yeem tswj tau qhov tam sim no uas tsim los ntawm array.
Length ntawm Cable khiav: Cov cables ntev dua ua rau muaj kev tiv thaiv ntau dua thiab lub zog poob, yog li suav cov ntsuas qhov tsim nyog kom txo qhov no.
Kev ntsuas kub: Xaiv cov cables uas tuaj yeem tiv taus qhov kub ib puag ncig hauv koj qhov chaw teeb tsa.
Txoj hlua Sizing thiab Voltage Compatibility
Txhawm rau kom ua tiav qhov kev ua tau zoo ntawm 5kW inverter, lub hnub ci array yuav tsum tau tsim nyob rau hauv lub inverter qhov kev khiav hauj lwm voltage ntau, uas feem ntau yog nruab nrab ntawm 300V thiab 500V rau cov tsev nyob.
Kev sib txuas Series (Txoj hlua): Cov vaj huam sib luag txuas nrog hauv series nce qhov system voltage. Qhov sib xyaw ua ke yuav tsum nyob qis dua lub inverter qhov siab tshaj plaws input voltage.
Kev sib txuas: Cov vaj huam sib luag sib txuas ua ke tswj qhov hluav taws xob tab sis nce qhov tam sim no. Qhov loj me ntawm hnub ci xov hlau yog qhov tseem ceeb hauv qhov teeb tsa no kom tswj tau qhov tam sim no siab dua yam tsis muaj cua sov.
Tswv yim piv txwv
Cia peb xav tias koj siv 300W solar panels. Txhawm rau xam ntau npaum li cas panels koj 5kW inverter tuaj yeem ua tau:
Tag nrho lub zog: 300W × 16=4, 800W
Voltage ib lub vaj huam sib luag: 40V; Txoj hlua voltage nrog 10 panels hauv series: 40V × 10=400V
Tam sim no: Piv txwv li 8A ib lub vaj huam sib luag, tag nrho tam sim no rau ob txoj hlua sib txuas: 8A × 2=16A
Los ntawm qhov piv txwv no, xyuas kom meej tias:
Cov xov hluav taws xob hnub ci raug ntsuas tsawg kawg yog 16A.
Cov cables txuas cov array rau lub inverter tuaj yeem tswj qhov sib xyaw ua ke ntawm 400V.
Oversizing lub hnub ci Array
Oversizing lub hnub ci array yog ib qho kev coj ua kom them nyiaj rau ib puag ncig yam xws li shading, av, thiab vaj huam sib luag degradation dhau sijhawm. Thaum oversizing, siv cov kab hluav taws xob hnub ci thiab cov xov hlau kom zoo kom tsis txhob muaj cua sov thiab lub zog poob.
Piv txwv li:
Lub 5kW inverter nrog 6kW hnub ci array yuav xav tau cov kab hluav taws xob ntsuas rau lub zog ntau dua.
Xyuas tias lub inverter tso cai rau oversizing (feem ntau teev nyob rau hauv cov ntaub ntawv).
Qhov System Losses thiab Cable Optimization
Kev ua haujlwm ntawm lub hnub ci yog nyob ntawm kev txo qis thaum lub sij hawm kis tau tus mob. Hnub ci cables thiab cov xov hlau yuav tsum muaj qhov tsis muaj zog thiab siab conductivity. Copper cables feem ntau nyiam vim lawv cov conductivity superior, txawm hais tias txhuas cables yuav siv tau los txo cov nqi hauv cov tshuab loj.
Xam Voltage poob hauv Solar Cables:Voltage Drop (%)=2 × Ntev × Tam sim no × Resistance ntawm Hlau / Voltage Rau kev ua tau zoo, qhov hluav taws xob poob yuav tsum tsawg dua 3%.
Kev xav txog kev nyab xeeb
Fuses thiab Breakers: Txhim kho qhov tsim nyog fuses thiab breakers los tiv thaiv hnub ci cables thiab xov hlau los ntawm overcurrent.
Hauv av: Xyuas kom lub kaw lus yog hauv av kom tsis txhob muaj hluav taws xob tsis zoo.
Rwb thaiv tsev: Siv cov cables nrog cov rwb thaiv tsev ruaj khov los tiv thaiv ib puag ncig kev ntxhov siab.