Kev xaiv thiab tsim cov inverters nyob rau hauv kev faib hluav taws xob photovoltaic lub zog tsim hluav taws xob yog ib kauj ruam tseem ceeb hauv kev ua kom muaj kev ua haujlwm zoo thiab ruaj khov ntawm qhov system. Inverters hloov cov tam sim no ncaj qha tsim los ntawm photovoltaic modules rau hauv alternating tam sim no rau siv nyob rau hauv lub hwj chim grids los yog loads.
Cov ncauj lus kom ntxaws inverter xaiv thiab tsim cov lus qhia, nrog rau cov piv txwv.
1. Txheej txheem cej luam ntawm inverter xaiv thiab tsim
1.1 Hom Inverter
Txoj hlua inverter: haum rau me me thiab nruab nrab-qhov loj me photovoltaic systems, nrog hloov tau yooj yim installation thiab yooj yim txij nkawm.
Centralized inverter: haum rau loj-scale photovoltaic systems, uas tsis muaj nqi tab sis ib tug loj ntau yam ntawm kev txhaum.
Micro inverter: haum rau me me photovoltaic systems, txhua yam yog nruab nrog ib tug inverter los ua kom lub zog tsim efficiency ntawm ib feem.
2. Inverter xaiv thiab tsim cov kauj ruam
2.1 Txiav txim qhov System Scale
Qhov project scale: Txiav txim siab tag nrho cov peev txheej inverter raws li lub peev xwm ntawm qhov project.
Piv txwv li: qhov project scale yog 500 kWp
2.2 Xaiv hom inverter
Txoj hlua inverter: haum rau 500 kWp tej yaam num, nrog saj zawg zog installation thiab yooj yim txij nkawm.
Centralized inverter: haum rau cov phiaj xwm loj dua nrog tus nqi qis.
Micro inverter: haum rau cov phiaj xwm me me, txhim kho lub zog tsim hluav taws xob ntawm tus kheej cov khoom.
2.3 Txiav txim siab muaj peev xwm inverter
Inverter muaj peev xwm: Xaiv lub peev xwm inverter tsim nyog raws li qhov siab tshaj plaws tso zis hluav taws xob ntawm photovoltaic module.
Piv txwv li: Xaiv 500 kW hlua inverter
2.4 Xav txog qhov siab tshaj plaws input voltage thiab tam sim no
Maximum input voltage: Qhov siab tshaj plaws input voltage ntawm lub inverter yuav tsum siab tshaj qhov siab tshaj plaws qhib Circuit Court voltage ntawm photovoltaic module.
Piv txwv: Qhov siab tshaj plaws qhib Circuit Court voltage ntawm photovoltaic module yog 500 V. Xaiv lub inverter nrog qhov siab tshaj plaws input voltage ntawm 600 V
Maximum input tam sim no: Qhov siab tshaj plaws input tam sim no ntawm lub inverter yuav tsum siab tshaj qhov siab tshaj plaws luv luv tam sim no ntawm photovoltaic module.
Piv txwv: Qhov siab tshaj plaws luv luv tam sim no ntawm photovoltaic module yog 10 A, thiab lub inverter nrog qhov siab tshaj plaws tam sim no ntawm 12 A raug xaiv
2.5 Xav txog qhov tso zis siab tshaj plaws
Lub zog tso zis ntau tshaj: Qhov siab tshaj plaws tso zis hluav taws xob ntawm lub inverter yuav tsum ua kom tau raws li qhov xav tau siab tshaj plaws ntawm qhov system.
Piv txwv li: qhov siab tshaj plaws load ntawm lub system yog 500 kW, thiab ib tug inverter nrog lub siab tshaj plaws tso zis zog ntawm 500 kW yog xaiv
2.6 Xav txog kev hloov dua siab tshiab
Conversion efficiency: Xaiv cov inverter nrog siab conversion efficiency los txhim kho tag nrho cov efficiency ntawm lub system.
Piv txwv li: Xaiv lub inverter nrog kev hloov dua siab tshiab ntawm 98%
2.7 Kev txiav txim siab ntawm Kev Tiv Thaiv Qib
Kev tiv thaiv qib: Xaiv qib kev tiv thaiv tsim nyog raws li kev teeb tsa ib puag ncig.
Piv txwv: Xaiv IP20 rau kev teeb tsa sab hauv tsev thiab IP65 rau kev teeb tsa sab nraum zoov
2.8 Xav txog kev sib txuas lus ua haujlwm
Kev sib txuas lus muaj nuj nqi: Xaiv cov inverters uas txhawb kev sib txuas lus raws tu qauv xws li Modbus thiab CAN rau kev saib xyuas thiab tswj.
Piv txwv: Xaiv lub inverter uas txhawb Modbus RTU
3. Piv txwv
3.1 Project Overview
Project scale: 500 kWp
Yam khoom: monocrystalline silicon
Lub cev muaj zog: 375 Wp
Tus naj npawb ntawm cov khoom: 1333 pcs
Txoj kev txhim kho: Lub tsev installation
3.2 Inverter xaiv
Inverter hom: hlua inverter
Inverter qauv: SG500UT
Inverter muaj peev xwm: 500 kW
Input voltage: 600V
Qhov siab tshaj tawm tam sim no: 12 A
Cov zis siab tshaj plaws: 500 kW
Conversion efficiency: 98%
Kev tiv thaiv qib: IP65
Kev sib txuas lus raws tu qauv: Modbus RTU
3.3 Inverter Parameters
Rated input voltage: 400V DC
Input voltage: 600V DC
Qhov siab tshaj tawm tam sim no: 12 A
Rated tso zis voltage: 380V AC
Cov zis siab tshaj plaws: 500 kW
Conversion efficiency: 98%
Ua haujlwm kub ntau: - 25 degree txog 60 degree
Kev tiv thaiv qib: IP65
Kev sib txuas lus interface: RS485, Txhawb Modbus RTU
Luj: 150 kg
Loj: 1000mm × 800mm × 600mm
4. Kev txiav txim siab tsim
4.1 System Matching
Cov khoom siv thiab inverter sib piv: xyuas kom meej tias qhov siab tshaj plaws tso zis hluav taws xob ntawm photovoltaic module tsis tshaj qhov siab tshaj plaws input zog ntawm lub inverter.
Piv txwv: Qhov siab tshaj plaws tso zis hluav taws xob ntawm photovoltaic module yog 500 kW, thiab qhov siab tshaj plaws input zog ntawm lub inverter yog 500 kW
4.2 Cua txias System
Txoj kev ua kom txias: Xaiv txoj kev ua kom txias, xws li cua txias, kiv cua txias, thiab lwm yam, kom ntseeg tau tias lub inverter ua haujlwm ib txwm nyob rau qhov kub thiab txias.
Piv txwv: Xaiv txoj kev ua kom txias
4.3 Kev teeb tsa ib puag ncig
Qhov chaw teeb tsa: Xaiv qhov chaw uas muaj qhov cua zoo thiab tsis txhob tshav ntuj ncaj qha kom ntseeg tau tias qhov txias txias ntawm lub inverter.
Piv txwv li: Muab tso rau hauv ib lub qhov cua zoo hauv tsev lossis sab nraum zoov tshav ntuj
4.4 Kev tu thiab tu
Kev tshuaj xyuas tsis tu ncua: Tsis tu ncua xyuas cov xwm txheej ua haujlwm ntawm lub inverter, qhia tam sim thiab daws teeb meem.
Piv txwv: Tshawb xyuas cov xwm txheej ua haujlwm ntawm lub inverter ib hlis ib zaug
