Lub zog cia inverter hom
Txoj kev: Muaj ob txoj kev loj: DC coupling thiab AC coupling
Lub photovoltaic cia system muaj xws li hnub ci vaj huam sib luag, controllers,hnub ci inverters, lub zog cia roj teeb, loads thiab lwm yam khoom siv. Muaj ob txoj hauv kev tseem ceeb: DC coupling thiab AC coupling. AC los yog DC coupling yog hais txog txoj kev uas lub hnub ci vaj huam sib luag yog txuas los yog txuas nrog lub zog cia lossis roj teeb. Hom kev sib txuas ntawm lub hnub ci vaj huam sib luag thiab lub roj teeb tuaj yeem yog AC lossis DC. Feem ntau cov hluav taws xob hluav taws xob siv DC, hnub ci vaj huam sib luag tsim DC, thiab cov roj teeb cia DC, tab sis feem ntau cov khoom siv hluav taws xob khiav ntawm AC.
Hybrid photovoltaic + lub zog cia qhov system, uas yog, qhov ncaj qha tam sim no tsim los ntawm photovoltaic module yog khaws cia rau hauv lub roj teeb pob los ntawm tus maub los, thiab daim phiaj tseem tuaj yeem them lub roj teeb los ntawm bidirectional DC-AC converter. Lub zog sau taw tes yog nyob ntawm DC roj teeb kawg. Thaum nruab hnub, lub tshuab hluav taws xob photovoltaic ua ntej muab cov khoom thauj, thiab tom qab ntawd them lub roj teeb los ntawm MPPT maub los. Lub zog cia qhov system txuas nrog kab sib chaws, thiab lub zog ntau dhau tuaj yeem txuas rau kab sib chaws; thaum hmo ntuj, lub roj teeb tso tawm los muab cov khoom thauj, thiab qhov tsis txaus yog ntxiv los ntawm daim phiaj; Thaum daim phiaj hluav taws xob tsis muaj hluav taws xob, lub zog hluav taws xob photovoltaic thiab lithium roj teeb tsuas yog muab lub zog rau cov khoom siv hluav taws xob tawm, thiab cov kab hluav taws xob txuas tsis tuaj yeem siv. Thaum lub zog thauj khoom ntau dua li lub zog hluav taws xob photovoltaic tsim hluav taws xob, daim phiaj thiab photovoltaic tuaj yeem muab lub zog rau lub load tib lub sijhawm. Vim tias lub zog hluav taws xob photovoltaic thiab lub zog siv hluav taws xob tsis ruaj khov, lawv cia siab rau cov roj teeb kom sib npaug ntawm lub zog. Tsis tas li ntawd, lub kaw lus tseem txhawb nqa cov neeg siv los teeb tsa lub sijhawm them thiab tso tawm kom tau raws li tus neeg siv lub zog xav tau.
Yuav ua li cas DC-Coupled System ua haujlwm
Tau qhov twg los: spiritenergy, Haitong Securities Research Institute
Hybrid photovoltaic + lub zog cia system
Source: GoodWe Photovoltaic Zej Zog, Haitong Securities Research Institute
Lub hybrid inverter integrates off-grid functionality los txhim kho kev them nqi efficiency. Daim phiaj-tied inverters cia li kaw lub hwj chim rau koj lub hnub ci vaj huam sib luag thaum lub zog hluav taws xob vim muaj kev nyab xeeb. Hybrid inverters, ntawm qhov tod tes, tso cai rau cov neeg siv kom muaj peev xwm off-grid thiab on-grid nyob rau tib lub sijhawm, yog li lub zog siv tau txawm tias thaum muaj hluav taws xob poob. Hybrid inverters ua kom yooj yim rau kev saib xyuas lub zog, tso cai rau cov ntaub ntawv tseem ceeb xws li kev ua haujlwm thiab kev tsim hluav taws xob los kuaj xyuas los ntawm inverter vaj huam sib luag lossis txuas nrog cov khoom siv ntse. Yog tias lub kaw lus muaj ob lub inverters, lawv yuav tsum tau saib xyuas nyias. DC coupling txo AC-DC conversion poob. Roj teeb them efficiency yog li 95-99%, thaum AC coupling yog 90%.
Hybrid inverter yog kev lag luam, compact, thiab yooj yim rau nruab. Txhim kho lub hybrid inverter tshiab nrog DC-coupled roj teeb tej zaum yuav pheej yig dua li retrofitting AC-coupled roj teeb rau ib tug uas twb muaj lawm system vim hais tias tus maub los yog pheej yig dua ib daim phiaj-khi inverter, tus hloov yog pheej yig dua ib tug faib txee, thiab DC- kev daws teeb meem kuj tseem tuaj yeem ua rau hauv tus tswj-inverter all-in-one, txuag ob qho khoom siv thiab cov nqi teeb tsa. Tshwj xeeb tshaj yog rau cov tshuab hluav taws xob me me thiab nruab nrab, DC-coupled systems yog tus nqi zoo heev. Hybrid inverters yog modular heev, thiab nws yog ib qho yooj yim mus ntxiv cov khoom tshiab thiab cov tswj. Cov khoom siv ntxiv tuaj yeem tau yooj yim ntxiv nrog tus nqi qis DC hnub ci controllers. Thiab hybrid inverters yog tsim los ua ke nrog kev khaws cia txhua lub sijhawm, ua kom yooj yim ntxiv cov roj teeb pob. Hybrid inverter systems yog cov compact, siv high-voltage roj teeb, thiab muaj me me cable loj thiab tsawg poob.
DC coupling system configuration
Source: Zhongrui Teeb pom kev zoo Network, Haitong Securities Research Institute
AC coupling system configuration
Source: Zhongrui Teeb pom kev zoo Network, Haitong Securities Research Institute
Txawm li cas los xij, hybrid inverters tsis haum rau kev txhim kho lub hnub ci uas twb muaj lawm, thiab cov tshuab loj dua yog qhov nyuaj thiab kim rau nruab. Yog tias tus neeg siv xav hloov kho lub hnub ci uas twb muaj lawm kom suav nrog cov roj teeb cia, xaiv lub hybrid inverter yuav ua rau qhov teeb meem nyuaj, thiab lub roj teeb inverter yuav raug nqi ntau dua vim tias xaiv rau nruab ib lub hybrid inverter yuav tsum tau ua kom tiav thiab kim rework ntawm tag nrho. solar vaj huam sib luag system. Cov tshuab loj dua yog qhov nyuaj rau kev txhim kho thiab kim dua vim qhov xav tau rau cov tswj hluav taws xob ntau dua. Yog tias hluav taws xob siv ntau dua thaum nruab hnub, yuav muaj qhov ua tau zoo me ntsis vim DC (PV) rau DC (batt) rau AC.
Lub kaw lus photovoltaic + lub zog khaws cia, tseem hu ua AC hloov pauv photovoltaic + lub zog cia qhov system, tuaj yeem paub tias DC lub zog tsim los ntawm photovoltaic module hloov mus rau AC lub zog los ntawm daim phiaj-txuas inverter, thiab tom qab ntawd lub zog dhau los hloov dua siab tshiab mus rau DC lub zog thiab khaws cia rau hauv lub roj teeb los ntawm AC txuas lub zog cia inverter. Lub zog sau taw tes yog nyob rau ntawm AC kawg. Nws suav nrog lub tshuab hluav taws xob photovoltaic thiab lub roj teeb hluav taws xob. Lub photovoltaic system muaj ib tug photovoltaic array thiab ib daim phiaj-txuas inverter, thiab lub roj teeb system muaj ib tug roj teeb pob thiab ib tug bidirectional inverter. Ob lub tshuab tuaj yeem ua haujlwm ntawm nws tus kheej yam tsis muaj kev cuam tshuam rau ib leeg, lossis lawv tuaj yeem raug cais tawm ntawm daim phiaj hluav taws xob loj los tsim ib lub microgrid system.
Yuav ua li cas AC-Coupled Systems ua haujlwm
Tau qhov twg los: spiritenergy, Haitong Securities Research Institute
Coupled tsev neeg photovoltaic + lub zog cia system
Source: GoodWe Solar Community, Haitong Securities Research Institute
Lub AC coupling system yog 100% sib xws nrog lub zog hluav taws xob, yooj yim rau nruab thiab nthuav dav. Cov txheej txheem kev teeb tsa hauv tsev muaj nyob, thiab txawm tias cov tshuab loj (2KW rau MW theem) tau yooj yim nthuav dav thiab tuaj yeem ua ke nrog cov kab sib txuas thiab cov khoom siv hluav taws xob sawv ntsug (cov chav diesel, cua turbines, thiab lwm yam). Feem ntau cov hlua hnub ci inverters saum 3kW muaj dual MPPT inputs, yog li cov hlua ntev ntawm cov vaj huam sib luag tuaj yeem ntsia tau rau hauv cov kev taw qhia sib txawv thiab qaij kaum. Ntawm qhov siab dua DC voltages, AC coupling yog yooj yim dua, tsis yooj yim thiab yog li ntawd tus nqi qis dua rau nruab cov tshuab loj dua li DC txuas txuas uas xav tau ntau yam MPPT tus nqi tswj.
AC coupling yog tsim rau kev hloov pauv ntawm lub cev, thiab nws muaj txiaj ntsig zoo siv AC loads thaum nruab hnub. Cov kab hluav taws xob txuas nrog PV uas twb muaj lawm tuaj yeem hloov mus rau hauv lub zog cia nrog cov nqi peev tsawg. Nws tuaj yeem muab cov neeg siv nrog kev tiv thaiv hluav taws xob nyab xeeb thaum daim phiaj tsis muaj hluav taws xob. Nws yog sib xws nrog daim phiaj-txuas nrog PV systems los ntawm ntau manufacturers. Advanced AC coupling systems feem ntau yog siv rau cov kab hluav taws xob loj dua thiab siv cov hlua hnub ci inverters ua ke nrog ntau hom inverters lossis inverter / chargers los tswj cov roj teeb thiab daim phiaj / generators. Txawm hais tias yooj yim rau kev teeb tsa thiab muaj zog, lawv tsis tshua muaj txiaj ntsig (90-94%) thaum them cov roj teeb piv rau DC coupling systems (98%). Txawm li cas los xij, cov tshuab no muaj txiaj ntsig zoo dua thaum siv hluav taws xob siab AC loads thaum nruab hnub, ncav cuag ntau dua 97%, thiab qee lub tshuab tuaj yeem nthuav dav nrog ntau lub hnub ci inverters los tsim microgrids.
AC coupling tsis tshua muaj txiaj ntsig thiab kim dua rau cov tshuab me me. Lub zog nkag mus rau hauv lub roj teeb hauv AC coupling yuav tsum tau hloov dua siab tshiab ob zaug, thiab thaum tus neeg siv pib siv lub zog ntawd, nws yuav tsum tau hloov dua siab tshiab, ntxiv qhov poob rau hauv qhov system. Yog li ntawd, thaum siv lub roj teeb, AC coupling efficiency poob rau 85-90%. AC txuas inverters yog kim dua rau cov tshuab me me.
Cov khoom siv hluav taws xob hauv tsev photovoltaic + lub zog cia feem ntau yog tsim los ntawm photovoltaic modules, lithium roj teeb, off-grid zog cia inverters, loads thiab diesel generators. Lub kaw lus tuaj yeem paub txog kev them nyiaj ncaj qha ntawm cov roj teeb los ntawm photovoltaics los ntawm DC-DC hloov dua siab tshiab, thiab tseem tuaj yeem paub txog kev hloov pauv ntawm DC-AC rau cov roj teeb them thiab tawm. Thaum nruab hnub, lub tshuab hluav taws xob photovoltaic ua ntej muab cov khoom thauj, thiab tom qab ntawd them lub roj teeb; Thaum tsaus ntuj, lub roj teeb tso tawm los muab cov khoom thauj, thiab thaum lub roj teeb tsis txaus, cov khoom thauj yog muab los ntawm cov tshuab hluav taws xob diesel. Nws tuaj yeem ua tau raws li qhov xav tau hluav taws xob niaj hnub hauv thaj chaw tsis muaj hluav taws xob. Nws tuaj yeem ua ke nrog cov tshuab hluav taws xob diesel kom pab cov tshuab hluav taws xob diesel los muab cov khoom thauj lossis them cov roj teeb. Feem ntau off-grid zog cia inverters tsis muaj daim ntawv pov thawj kev sib txuas, thiab txawm tias lub kaw lus muaj kab sib chaws, nws tsis tuaj yeem txuas rau kab sib chaws.
Tawm ntawm daim phiaj inverter
Source: Growatt official website, Haitong Securities Research Institute
Off-grid tsev photovoltaic + lub zog cia qhov system
Source: GoodWe Photovoltaic Zej Zog, Haitong Securities Research Institute
Cov xwm txheej muaj feem xyuam rau lub zog cia inverters
Lub zog cia inverters muaj peb lub luag haujlwm tseem ceeb, suav nrog lub ncov shaving, thaub qab fais fab mov thiab lub zog ywj pheej. Los ntawm lub regional foundations, ncov shaving yog xav tau nyob rau hauv cov teb chaws Europe. Siv lub teb chaws Yelemees ua piv txwv, tus nqi hluav taws xob hauv lub teb chaws Yelemees tau nce mus txog 2.3 yuan / kWh hauv 2019, qeb thib ib hauv ntiaj teb. Nyob rau hauv xyoo tas los no, German nqi hluav taws xob tau nce ntxiv. Xyoo 2021, tus nqi hluav taws xob hauv German tau nce mus txog 34 euro xees / kWh, thaum lub photovoltaic / photovoltaic faib thiab cia LCOE tsuas yog 9.3 / 14.1 euro xees / kWh, uas yog 73% / 59% qis dua tus nqi hluav taws xob hauv tsev. Tus nqi hluav taws xob hauv tsev yog tib yam li Qhov sib txawv ntawm kev faib hluav taws xob photovoltaic thiab cov nqi hluav taws xob cia yuav txuas ntxiv mus. Kev faib khoom hauv tsev photovoltaic thiab kev cia khoom tuaj yeem txo cov nqi hluav taws xob, yog li cov neeg siv hauv cov cheeb tsam uas muaj cov nqi hluav taws xob siab muaj kev txhawb zog rau nruab hauv tsev cia khoom.
Tus nqi hluav taws xob nyob hauv ntau lub teb chaws hauv 2019
Source: EuPD Kev Tshawb Fawb, Haitong Securities Research Institute
Tus nqi hluav taws xob hauv lub teb chaws Yelemees (cents/kWh)
Source: EuPD Kev Tshawb Fawb, Haitong Securities Research Institute
Hauv kev ua lag luam siab tshaj plaws, cov neeg siv xaiv hybrid inverters thiab AC-coupled roj teeb tshuab, uas yog tus nqi ntau dua thiab yooj yim rau kev tsim khoom. Off-grid roj teeb inverter chargers nrog hnyav transformers yog kim kim, thiab hybrid inverters thiab AC-coupled roj teeb tshuab siv transformerless inverters nrog switching transistors. Cov compact thiab lub teeb yuag inverters muaj qis surge thiab peak fais fab tso zis kev ntsuam xyuas, tab sis yog cov nqi-zoo, pheej yig dua thiab yooj yim rau kev tsim khoom.
Cov khoom siv hluav taws xob rov qab yog xav tau los ntawm Tebchaws Meskas thiab Nyij Pooj, thiab cov khoom siv hluav taws xob ywj pheej yog nyob rau hauv kev thov kev lag luam ceev, suav nrog South Africa thiab lwm thaj chaw. Raws li EIA, lub sijhawm nruab nrab ntawm lub zog hluav taws xob hauv Tebchaws Meskas xyoo 2020 tau tshaj li 8 teev, uas feem ntau cuam tshuam los ntawm cov neeg nyob hauv Asmeskas cov neeg nyob hauv lub tebchaws, kev laus ntawm qee qhov hluav taws xob, thiab kev puas tsuaj ntuj tsim. Daim ntawv thov ntawm cov khoom siv hluav taws xob hauv tsev photovoltaic faib thiab kev cia khoom tuaj yeem txo qhov kev cia siab ntawm daim phiaj hluav taws xob thiab ua kom muaj kev ntseeg siab ntawm cov khoom siv hluav taws xob ntawm cov neeg siv khoom. Lub tshuab hluav taws xob photovoltaic hauv Tebchaws Meskas yog qhov loj dua thiab nruab nrog ntau lub roj teeb vim nws yuav tsum tau khaws cov hluav taws xob los daws cov kev puas tsuaj ntuj tsim. Cov khoom siv hluav taws xob ywj pheej yog qhov xav tau ntawm kev lag luam ceev. Hauv cov teb chaws xws li South Africa, Pakistan, Lebanon, Philippines, thiab Nyab Laj, qhov chaw thoob ntiaj teb cov saw hlau nruj, lub teb chaws infrastructure tsis txaus los txhawb tib neeg kev siv hluav taws xob, yog li cov neeg siv yuav tsum tau nruab nrog tsev neeg photovoltaic zog cia cov tshuab.
Teb Chaws Asmeskas fais fab tuag ncua sij hawm ib tug neeg (teev)
Tau qhov twg los: EIA, Haitong Securities Research Institute
Thaum Lub Rau Hli 2022, South Africa tau pib theem rau qhov kev faib hluav taws xob, nrog ntau qhov chaw muaj hluav taws xob poob rau 6 teev hauv ib hnub.
Source: GoodWe Photovoltaic Zej Zog, Haitong Securities Research Institute
Hybrid inverters muaj qee qhov kev txwv raws li lub zog thaub qab. Piv nrog rau cov kab hluav taws xob off-grid inverters, hybrid inverters muaj qee qhov kev txwv, feem ntau txwv tsis pub dhau los yog lub zog siab tshaj tawm thaum lub zog hluav taws xob. Tsis tas li ntawd, qee qhov hybrid inverters tsis muaj lub peev xwm thaub qab lossis txwv lub zog thaub qab, yog li tsuas yog cov khoom me me lossis tsim nyog xws li teeb pom kev zoo thiab cov hluav taws xob hluav taws xob yooj yim tuaj yeem rov qab tau thaum lub zog hluav taws xob, thiab ntau lub tshuab yuav muaj 3-5 thib ob qeeb thaum lub hwj chim. kev tawm tsam. Off-grid inverters muab siab heev surge thiab peak hwj chim tso zis thiab muaj peev xwm lis siab inductive loads. Yog tias cov neeg siv npaj yuav siv cov khoom siv hluav taws xob siab xws li twj tso kua mis, compressors, tshuab ntxhua khaub ncaws, thiab cov cuab yeej hluav taws xob, lub inverter yuav tsum muaj peev xwm tswj tau qhov siab inductive surge loads.
Hybrid inverter tso zis zog sib piv
Source: huv zog tshuaj xyuas, Haitong Securities Research Institute
DC txuas hybrid inverter
Tam sim no, feem ntau photovoltaic zog cia tshuab hauv kev lag luam siv DC coupling kom ua tiav kev sib xyaw photovoltaic thiab lub zog cia tsim, tshwj xeeb tshaj yog nyob rau hauv cov tshuab tshiab, qhov twg hybrid inverters yooj yim rau nruab thiab tsis tshua muaj nqi. Thaum ntxiv cov txheej txheem tshiab, siv lub tshuab hluav taws xob photovoltaic thiab lub zog cia hybrid inverter tuaj yeem txo cov nqi khoom siv thiab kev teeb tsa, vim tias ib qho inverter tuaj yeem ua tiav kev tswj hwm thiab inverter. Cov maub los thiab hloov pauv hauv DC coupling system yog pheej yig dua li cov kab sib txuas sib txuas thiab cov khoom xa tawm hauv AC coupling system, yog li DC coupling tov yog pheej yig dua li AC coupling tov. Nyob rau hauv DC coupling system, tus maub los, roj teeb thiab inverter yog serial, kev sib txuas yog nruj, thiab qhov yooj yim yog tsis zoo. Rau cov tshuab tshiab, photovoltaics, roj teeb, thiab inverters yog tsim raws li tus neeg siv lub zog thauj khoom thiab lub zog noj, yog li lawv tsim nyog rau DC-coupled hybrid inverters.
DC-coupled hybrid inverter cov khoom lag luam yog cov qauv tseem ceeb, thiab cov tuam txhab loj hauv tsev tau xa lawv. Tsuas yog AP Zog, cov tuam txhab tsim hluav taws xob hauv tsev loj tau siv hybrid inverters, ntawm cov uasSineng Electric, GoodWe, thiab Jinlongkuj tau siv AC-coupled inverters, thiab daim ntawv khoom tiav. Deye's hybrid inverter txhawb AC txuas ntawm lub hauv paus ntawm DC coupling, uas muab kev yooj yim rau cov neeg siv khoom hloov pauv xav tau.Sungrow, Huawei, Sineng Electric, thiab GoodWetau siv lub zog cia roj teeb, thiab cov roj teeb inverter kev koom ua ke yuav dhau los ua ib qho kev sib tw yav tom ntej.
Layout ntawm loj domestic inverter manufacturers
Source: Cov vev xaib raug cai ntawm ntau lub tuam txhab, Haitong Securities Research Institute
Peb-theem high-voltage cov khoom lag luam yog tsom ntawm txhua lub tuam txhab, thiab Deye tsom mus rau cov khoom lag luam uas tsis tshua muaj hluav taws xob. Tam sim no, feem ntau hybrid inverter khoom yog nyob rau hauv 10KW, cov khoom qis dua 6KW feem ntau yog ib-theem qis-voltage khoom, thiab 5-10KW cov khoom feem ntau yog peb-theem high-voltage khoom. Deye tau tsim ntau yam khoom siv hluav taws xob qis qis, thiab cov khoom siv hluav taws xob tsawg 15KW tau tsim tawm xyoo no tau pib muag.
Hauv tsev inverter manufacturers hybrid inverter khoom
Qhov siab tshaj plaws hloov dua siab tshiab ntawm cov khoom tshiab los ntawm domestic inverter manufacturers tau mus txog 98%, thiab lub sij hawm ntawm on-grid thiab off-grid switching yog feem ntau tsawg tshaj li 20ms. Qhov siab tshaj plaws conversion efficiencyntawm Jinlong, Sungro, thiab Huaweicov khoom tau mus txog 98.4%, thiabNyob zookuj tau mus txog 98.2%. Qhov siab tshaj plaws hloov dua siab tshiab ntawm Homai thiab Deye yog me ntsis qis dua 98%, tab sis Deye lub sijhawm hloov pauv ntawm daim phiaj thiab tawm ntawm daim phiaj tsuas yog 4ms, qis dua li 10-20ms ntawm nws cov phooj ywg.
Kev sib piv ntawm qhov siab tshaj plaws conversion efficiency ntawm hybrid inverters los ntawm ntau lub tuam txhab
Source: Cov vev xaib raug cai ntawm txhua lub tuam txhab, Haitong Securities Research Institute
Kev sib piv ntawm kev hloov lub sij hawm ntawm hybrid inverters ntawm ntau lub tuam txhab (ms)
Source: Cov vev xaib raug cai ntawm txhua lub tuam txhab, Haitong Securities Research Institute
Cov khoom tseem ceeb ntawm cov tuam txhab tsim hluav taws xob hauv tsev feem ntau yog tsom mus rau peb lub khw loj ntawm Tebchaws Europe, Tebchaws Meskas, thiab Australia. Hauv kev ua lag luam nyob sab Europe, cov khw muag khoom photovoltaic ib txwm muaj xws li lub teb chaws Yelemees, Austria, Switzerland, Sweden, thiab Netherlands yog cov lag luam peb theem, uas nyiam cov khoom siv hluav taws xob ntau dua. Cov tuam txhab lag luam ib txwm muaj qhov zoo yog Sunshine thiab Goodwe. Ginlang tab tom ua kom nrawm nrawm, tso siab rau tus nqi kom zoo dua thiab kev tshaj tawm cov khoom siv hluav taws xob siab tshaj 15KW tau txais kev nyiam los ntawm cov neeg siv. Cov teb chaws Europe yav qab teb xws li Ltalis thiab Spain feem ntau xav tau ib-theem qis-voltage khoom.Goodwe, Ginlang thiab Shouhangua tau zoo nyob rau hauv ltalis xyoo tas los, txhua tus accounting txog 30% ntawm kev ua lag luam. Eastern European lub teb chaws xws li Czech koom pheej, Poland, Romania, thiab Lithuania feem ntau xav tau peb-theem cov khoom, tab sis lawv cov nqi txais tsawg. Yog li ntawd, Shouhang ua tau zoo nyob rau hauv lub lag luam no nrog nws tus nqi qis kom zoo dua. Nyob rau hauv lub quarter thib ob ntawm lub xyoo no, Deye pib xa 15KW cov khoom tshiab rau Tebchaws Meskas. Tebchaws Asmeskas muaj cov khoom siv hluav taws xob loj dua thiab nyiam cov khoom siv hluav taws xob ntau dua.
Cov tuam txhab tsim khoom siv hluav taws xob hauv tsev 'hybrid inverter cov khoom lag luam tsom rau kev ua lag luam
Source: Cov vev xaib raug cai ntawm txhua lub tuam txhab, Haitong Securities Research Institute
Qhov sib cais hom roj teeb inverter yog nrov dua ntawm cov installers, tab sis tag nrho-nyob rau hauv-ib lub roj teeb inverter yog yav tom ntej txoj kev loj hlob qauv. Hnub ci-storage hybrid inverters tau muab faib ua hybrid inverters muag nyias thiab roj teeb lub zog cia tshuab (BESS) uas muag inverters thiab roj teeb ua ke. Tam sim no, nrog cov tswv lag luam tswj hwm cov channel, cov neeg siv khoom ncaj qha muaj cov ntsiab lus tseem ceeb, thiab cov khoom lag luam nrog cov roj teeb sib cais thiab cov khoom siv hluav taws xob tau nrov dua, tshwj xeeb tshaj yog nyob sab nraud lub teb chaws Yelemees, vim tias lawv yooj yim rau nruab thiab nthuav dav, thiab tuaj yeem txo cov nqi yuav khoom. , yog tias ib tus neeg muag khoom tsis tuaj yeem muab cov roj teeb lossis cov inverter, koj tuaj yeem nrhiav tus neeg muag khoom thib ob, thiab kev xa khoom yuav lav ntau dua. Cov qauv hauv lub teb chaws Yelemees, Tebchaws Meskas, thiab Nyij Pooj yog tag nrho-hauv-ib tshuab. Lub tshuab tag nrho-hauv-ib qho tuaj yeem txuag tau ntau yam teeb meem tom qab muag, thiab muaj cov ntaub ntawv pov thawj. Piv txwv li, daim ntawv pov thawj hluav taws kub hauv Tebchaws Meskas yuav tsum tau txuas nrog lub inverter. Cov txheej txheem thev naus laus zis tam sim no yog mus rau tag nrho-hauv-ib lub tshuab, tab sis hais txog kev muag khoom lag luam, qhov sib cais tau txais ntau dua los ntawm cov neeg tsim khoom.
Feem ntau cov tuam txhab tsim khoom hauv tsev tau pib xa cov roj teeb-inverter integrated tshuab. Manufacturers xws liShohang Xinneng, Growatt, thiab Kehuatau xaiv tus qauv no. Shougang Xinneng lub zog cia roj teeb muag hauv 2021 mus txog 35,100 pcs, nce 25 zaug piv nrog 20 xyoo; Growatt lub zog khaws cia hauv 2021 Roj teeb muag tau 53,000 teeb, nce tsib npaug ntawm 20 xyoo dhau los. Qhov zoo heev ntawm Airo lub zog cia inverters tau tsav qhov kev loj hlob ntxiv ntawm cov roj teeb muag. Xyoo 2021, Airo roj teeb xa khoom yog 196.99MWh, nrog cov nyiaj tau los ntawm 383 lab yuan, ntau dua ob npaug ntawm cov nyiaj tau los ntawm lub zog cia inverters. Cov neeg siv khoom muaj kev paub zoo ntawm cov tuam txhab inverter uas ua cov roj teeb vim lawv muaj kev sib raug zoo nrog cov tuam txhab inverter thiab muaj kev ntseeg siab rau cov khoom.
Shouhang Tshiab Zog Cia Roj Teeb Cov Nyiaj Tau Los Ua Haujlwm nce nrawm
rce: EIA, Haitong Securities Research Institute
Airo lub zog cia roj teeb cov nyiaj tau los yuav suav txog 46% hauv 2021
Source: GoodWe Photovoltaic Zej Zog, Haitong Securities Research Institute
Hauv DC txuas cov tshuab, cov roj teeb hluav taws xob muaj zog ntau dua, tab sis kim dua thaum muaj roj teeb tsis txaus. Piv nrog 48V roj teeb tshuab, cov roj teeb hluav taws xob siab muaj qhov ua haujlwm ntawm qhov hluav taws xob ntawm 200-500V DC, qis qis qis thiab ua haujlwm zoo dua, vim tias cov hnub ci vaj huam sib luag feem ntau ua haujlwm ntawm 300-600V, zoo ib yam li cov roj teeb hluav taws xob, thiab poob qis heev thiab ua haujlwm siab. DC-DC converters tuaj yeem siv tau. Cov roj teeb hluav taws xob siab muaj cov roj teeb ntau dua thiab cov nqi inverter qis dua li cov tshuab hluav taws xob tsawg. Tam sim no, cov roj teeb hluav taws xob siab yog nyob rau hauv qhov kev thov siab thiab cov khoom tsis txaus, yog li cov roj teeb hluav taws xob siab yuav nyuaj rau kev yuav khoom. Nyob rau hauv cov ntaub ntawv ntawm high voltage roj teeb tsis txaus, nws yog pheej yig dua siv cov roj teeb uas tsis muaj hluav taws xob.
DC coupling ntawm hnub ci array thiab inverter
Source: huv zog tshuaj xyuas, Haitong Securities Research Institute
Direct DC coupling rau tshaj hybrid inverters
rce: Kev tshuaj xyuas lub zog huv, Haitong Securities Research Institute
Hybrid inverters los ntawm cov tuam txhab loj hauv tsev tsim nyog rau cov kab hluav taws xob tawm vim tias lawv cov hluav taws xob rov qab tso tawm thaum lub zog hluav taws xob tsis txwv. Lub zog thaub qab ntawm cov khoom siv hluav taws xob ntawm qee cov khoom lag luam yog qis dua li lub zog ib txwm muaj, tab sislub zog thaub qab ntawm cov khoom siv tshiab ntawm Goodwe, Jinlang, Sungrow, thiab Hemai yog tib yam li tus nqi ib txwm muaj, uas yog, lub hwj chim tsis muaj kev txwv ntau dua thaum khiav tawm ntawm daim phiaj, yog li cov tuam txhab tsim hluav taws xob hauv tsev lub zog cia inverters yog tsim rau cov kab hluav taws xob tawm.
Kev sib piv ntawm thaub qab fais fab mov fais fab ntawm hybrid inverter khoom los ntawm domestic inverter manufacturers
Cov ntaub ntawv pov thawj: Cov vev xaib raug cai ntawm txhua lub tuam txhab, Haitong Securities Research Institute
AC txuas inverter
DC-coupled systems tsis haum rau retrofitting kab sib txuas uas twb muaj lawm. Txoj kev sib txuas ntawm DC feem ntau muaj cov teeb meem hauv qab no: Ua ntej, lub kaw lus siv DC coupling muaj teeb meem nrog kev sib txuas ntawm txoj hlua thiab cov qauv tsim tsis tau rov qab thaum hloov kho cov kab sib txuas uas twb muaj lawm; Thib ob, qhov ncua sij hawm hloov ntawm daim phiaj sib txuas thiab off-grid yog qhov ntev, uas nyuaj rau cov neeg siv. Kev paub txog hluav taws xob tsis zoo; Thib peb, kev tswj hwm kev txawj ntse tsis muaj kev paub txaus thiab cov lus teb tswj tsis tau raws sijhawm, ua rau nws nyuaj rau kev siv microgrid daim ntawv thov rau tag nrho lub tsev fais fab mov. Yog li ntawd, qee lub tuam txhab tau xaiv AC coupling technology txoj kev, xws li Yuneng.
AC coupling system ua rau cov khoom installation yooj yim dua. Yuneng paub txog ob txoj kev khiav ntawm lub zog los ntawm kev sib txuas ntawm AC sab thiab lub tshuab hluav taws xob photovoltaic, tshem tawm qhov xav tau kev nkag mus rau photovoltaic DC tsheb npav, ua rau cov khoom lag luam yooj yim dua; nws paub txog kev sib koom ua ke tawm ntawm kab sib chaws los ntawm kev sib txuas ntawm software real-time tswj thiab kho vajtse tsim kev txhim kho Millisecond-theem hloov; Los ntawm cov zis tswj ntawm lub zog cia inverter thiab lub tswv yim ua ke tsim ntawm lub hwj chim mov thiab tis system, lub microgrid daim ntawv thov ntawm tag nrho lub tsev fais fab mov nyob rau hauv kev tswj ntawm lub automatic tswj lub thawv yog pom tau hais tias.
Qhov siab tshaj plaws hloov dua siab tshiab ntawm AC-coupled khoom yog me ntsis qis dua li ntawm hybrid inverters. Jinlong thiab GoodWe kuj tau siv AC-coupled cov khoom, feem ntau yog tsom rau cov khoom lag luam hloov pauv. Qhov siab tshaj plaws hloov dua siab tshiab ntawm AC-coupled khoom yog 94-97%, uas yog me ntsis qis dua li ntawm hybrid inverters. Qhov no feem ntau yog vim hais tias cov Cheebtsam yuav tsum tau undergo ob hloov dua siab tshiab ua ntej lawv yuav muab cia rau hauv lub roj teeb tom qab tsim hluav taws xob, uas txo cov conversion efficiency.
Kev sib piv ntawm AC-coupled khoom los ntawm domestic inverter manufacturers
Source: Cov vev xaib raug cai ntawm ntau lub tuam txhab, Haitong Securities Research Institute
Post lub sij hawm: May-20-2024
