Txhawm rau loj lub hnub ci roj teeb lub txhab nyiaj kom raug, xam lub zog uas koj xaiv yuav tsum tau txais, txhais tau tias lawv yuav tsum tau khiav ntev npaum li cas, thiab tom qab ntawd kho lub zog ntawd rau lub roj teeb qhov tob ntawm kev tso tawm, kev xa khoom poob, thiab cov qauv tsim tawm. Tom qab suav cov peev xwm hauv kilowatt- teev, txheeb xyuas lub zog txuas ntxiv, lub cev muaj zog- pib surge, roj teeb tswj kev txwv, kev them nqi, thiab cov khoom siv sib xws.
Core formula rau thaub qab loads:Yuav tsum tau nominal roj teeb muaj peev xwm (kWh)=nruab nrab tseem ceeb load (kW) × backup lub sij hawm (teev) × tsim margin ÷ usable roj teeb feem ÷ xa efficiency.
Yog tias koj twb paub txog qhov yuav tsum tau muaj lub zog thauj khoom hauv kWh, tsis txhob muab ntau dua los ntawm lub sijhawm thaub qab dua. Siv:
Yuav tsum tau nominal roj teeb muaj peev xwm (kWh)=xav tau load zog (kWh) × tsim margin ÷ usable roj teeb feem ÷ xa efficiency.
Tus nqi kWh suav yog qhov txiaj ntsig ntawm kev npaj, tsis yog cov khoom siv ua tiav. Lub cev muaj zog yuav tsum tau ua kom muaj zog inverter, BMS tam sim no, surge duration, voltage, charging, thaiv, kev tiv thaiv, kev sib txuas lus, ib puag ncig, thiab hauv zos installation cov cai.
Lub hnub ci roj teeb loj npaum li cas koj yuav tsum siv?
Qhov pib qhov tseeb yog nyob ntawm seb lub roj teeb yuav tsum ua li cas. Ua ntej xaiv cov khoom lag luam, txheeb xyuas seb qhov project puas yog rau kev tiv thaiv hluav taws xob, tag nrho - sijhawm tawm - phiaj xwm ua haujlwm, lossis hnub ci hnub ci tus kheej - noj. Rau qhov dav dav dua - theem kev sib piv, tshuaj xyuasntawm -grid, off-grid, thiab hybrid solar system configurations.
| Daim ntawv thov | Qhov zoo tshaj plaws Pib Input | Cov Qauv Tseem Ceeb | Main Tsim Risk |
|---|---|---|---|
| Tsev thaub qab | Nruab nrab qhov tseem ceeb thauj khoom thiab xav tau sijhawm thaub qab | Nruab nrab load × teev, ces kho rau DoD, efficiency, thiab margin | Tsawg zog ib txhij los yog lub cev muaj zog surge |
| Tawm - daim phiaj hauv tsev, cabin, lossis RV | Txhua hnub load zog thiab autonomy hnub | Lub zog txhua hnub × autonomy hnub, tom qab ntawd kho rau DoD, kev ua tau zoo, thiab cov npoo | Sizing cia tsis txaus them lub caij nyoog |
| Hnub ci tus kheej -siv | Cia siab tias nruab hnub hnub ci tshaj tawm thiab yav tsaus ntuj xav tau lub zog | Lub hom phiaj hloov lub zog, kho kom muaj peev xwm siv tau thiab kev poob qis | Txhim kho kev cia ntau dua li lub hnub ci array tuaj yeem sau tsis tu ncua |
Formula for Home Backup Battery Size
Ua ntej xam cov AC zog uas tiv thaiv loads yuav tsum tau txais:
Yuav tsum muaj lub zog thauj khoom (kWh)=nruab nrab qhov hnyav hnyav (kW) × lub sijhawm thaub qab (teev)
Ces xam nominal roj teeb muaj peev xwm:
Nominal roj teeb muaj peev xwm (kWh)=yuav tsum tau load zog × tsim npoo ÷ usable roj teeb feem ÷ tus me nyuam efficiency
Formula for Off- Daim phiaj hnub ci roj teeb lub txhab nyiaj Sizing
Rau ib qho kev tawm - kab sib chaws uas yuav tsum ua haujlwm dhau hmo lossis lub sijhawm tsis muaj hnub ci tsim tawm:
Nominal roj teeb muaj peev xwm (kWh)=niaj hnub tsim load (kWh/hnub) × autonomy hnub × tsim margin ÷ usable roj teeb feem ÷ xa khoom efficiency
Formula rau Solar Self-Kev siv
Kwv yees tus nqi ntawm hnub ci zog hnub ci uas tuaj yeem khaws cia thiab cov khoom thauj thaum yav tsaus ntuj lossis hmo ntuj uas tuaj yeem siv tau. Lub zog siv tau- lub hom phiaj hloov pauv feem ntau yog qhov tsawg dua ntawm ob qhov txiaj ntsig no:
Lub hom phiaj hloov lub zog=qis dua ntawm qhov xav tau hnub ci tshaj lossis npaj tau tom qab- hnub poob
Tom qab ntawd kho lub hom phiaj rau usable roj teeb muaj peev xwm thiab cov kev hloov dua siab tshiab losses. Lub system architecture tseem ceeb vim hais tiasAC-coupled thiab DC-coupled roj teeb ciatso qhov kev poob qis ntawm cov ntsiab lus sib txawv hauv txoj kev siv zog.
Hnub ci roj teeb lub txhab nyiaj Formula variables thiab units
Siv ib lub sij hawm rau txhua lub cev kom muaj nuj nqis. Kev sib xyaw ntawm lub zog thauj khoom nrog lub zog thauj khoom yog ib qho ua rau muaj qhov tshwm sim tsis raug.
| Cim | Lub ntsiab lus | Chav tsev | Yuav Tau Li Cas |
|---|---|---|---|
| P | Nruab nrab load zog thaum lub sij hawm thaub qab | kW | Ntsuas cov ntaub ntawv ncua sij hawm lossis tag nrho cov khoom thauj ib txhij muab faib los ntawm lub sijhawm |
| t | Yuav tsum tau backup ncua sij hawm | teev | Tawm lub hom phiaj lossis kev ua haujlwm yuav tsum tau ua |
| E | Lub zog xav tau los ntawm kev thauj khoom | kWh | P × t, lossis cov khoom siv hluav taws xob |
| D | Lub sijhawm Autonomy | hnub | Kev ntseeg tau lub hom phiaj raws li hnub ci tej yam kev mob thiab kev them nyiaj thaub qab |
| f | Siv tau roj teeb feem | kaum tsib | Chaw tsim tshuaj paus kev khiav hauj lwm ntau los yog siv tau - zog specification |
| η | Delivery efficiency los ntawm lub roj teeb mus rau qhov tsim loads | kaum tsib | Cov ntaub ntawv roj teeb thiab inverter rau txoj kev siv hluav taws xob |
| M | Tsim cov npoo sib npaug | kaum tsib | Piv txwv li, 1.10 rau pob tshab 10% nyiaj pub dawb |
| C | Yuav tsum tau nominal roj teeb muaj peev xwm | kWh | Qhov tshwm sim ntawm sizing formula |
Lub hwj chim hauv kW txiav txim siab npaum li cas cov khoom thauj tuaj yeem txhawb nqa ntawm ib lub sijhawm. Lub zog hauv kWh txiav txim siab ntev npaum li cas nws tuaj yeem txhawb nqa qhov load. Qhov sib txawv tau piav qhia ntxiv hauv phau ntawv qhia nokW piv rau kWh hauv roj teeb lub zog cia.
Txhais seb lub roj teeb yuav tsum ua li cas
Thaum muaj xwm ceev Home Backup
Ib lub tsev thaub qab yuav tsum pib nrog kev tiv thaiv - cov npe thauj khoom, tsis yog tsev neeg tag nrho txhua xyoo lossis kev siv hluav taws xob txhua hnub. Txheeb xyuas cov kab hluav taws xob uas yuav tsum nyob twj ywm muaj, lub sijhawm xav tau kev puas tsuaj, thiab cov khoom siv uas yuav khiav tib lub sijhawm.
Lub hnub ci vaj huam sib luag tsis cia li muab lub zog thaub qab thaum lub phiaj xwm hluav taws xob. Lub kaw lus xav tau cov cuab yeej tsim los cuam tshuam kev nyab xeeb ntawm daim phiaj thiab tsim cov kab hluav taws xob uas muaj zog. US Department of Energy piav qhia txog qhov yuav tsum tau ua haujlwm hauv nwsKev taw qhia hnub ci thiab resilience.
Puv - Sijhawm Tawm -Grid Power
Ib tug off-grid roj teeb yuav tsum them rau lub sij hawm thaum lub hnub ci tiam nyob rau hauv qis load. Tus qauv tsim ib txwm xav txog kev xav tau thaum hmo ntuj, txo lub hnub ci raws caij nyoog, lub sijhawm huab cua sib law liag, kev siv lub tshuab hluav taws xob sib txuas, cov twj tsis sib xws, lub tshuab hluav taws xob muaj, thiab thauj khoom-txoj kev xaiv.
Kev khaws cia thiab hnub ci tsim yuav tsum muaj qhov loj me ua ke. Lub roj teeb loj dua tsis tuaj yeem txhim kho kev ua haujlwm yog tias lub hnub ci array lossis lub tshuab hluav taws xob tsis tuaj yeem hloov lub zog tshem tawm ntawm nws. Yog xav paub ntxiv, saib seb ahnub ci zog cia system tswj kev tsim, khaws cia, thiab thauj khoom.
Hnub Ci Tus Kheej Txhua Hnub -Kev siv
Tus kheej- roj teeb siv tau khaws cia hnub ci zog ntau dua rau kev siv tom qab. Lub peev xwm muaj txiaj ntsig yog txwv los ntawm ob qho tib si lub hnub ci tshaj tawm muaj rau kev them nyiaj thiab tus nqi ntawm yav tsaus ntuj lossis hmo ntuj xav tau muaj rau kev tso tawm. Ob peb hnub ntawm kev cia yuav nyob twj ywm tsis siv nyob rau hauv ib qho system uas tsim tsuas yog ib tug me me nyiaj tshuav nyiaj li cas.
Xam cov Loads uas koj xav tau tiag tiag
Tsim ib lub rooj thauj khoom ua ntej xaiv lub roj teeb. Siv ntsuas lub zog thaum twg los tau, tshwj xeeb tshaj yog rau cov khoom siv uas mus rau thiab tawm.
| Thauj khoom | Ntau | Input siv rau Sizing | Lub sijhawm ua haujlwm | Zog Txhua Hnub |
|---|---|---|---|---|
| Lub tub yees | 1 | Ntsuas lub zog | 24 teev ntawm kev caij tsheb kauj vab | 1.35 kWh |
| LED teeb pom kev zoo | 8 | 10 W cwb | 5 hnu | 0.40 kWh |
| Router thiab cov khoom siv network | 1set ib | 25 W nruab nrab | 24 teev | 0.60 kWh |
| Laptops | 2 | 60 w ib | 4 hnu | 0.48 kWm |
| Lub tshuab nqus dej | 1 | 800 W khiav | 0,5h ua | 0.40 kWh |
| Inverter tsis ua haujlwm load | 1 | 20 W | 24 teev | 0.48 kWm |
| Tag nrho | - | - | - | 3.71 kWh/d |
Cov lus no yog ib qho piv txwv ntsuas -raws li kev ua haujlwm, tsis yog ib qho profile hauv tsev neeg. Hloov txhua tus nqi nrog cov ntaub ntawv qhov project.
Siv Cov Kev Ntsuas Ntsuas Cov Txheej Txheem
- Ntsuas cov ntsaws- hauv cov khoom siv tsawg kawg 24 txog 72 teev thaum ua tau.
- Siv inverter saib xyuas lossis cov ntaub ntawv siv hluav taws xob ib ntus txhawm rau txheeb xyuas 24-teev baseload thiab qhov kev thov siab tshaj plaws.
- Sau cov khoom raws caij nyoog sib cais, suav nrog cua sov, cua txias, dehumidification, thiab dej twj.
- Tshawb xyuas lub cev muaj zog- pib tam sim no los ntawm cov ntaub ntawv khoom siv lossis muaj kev ntsuas tsim nyog rau nws.
- Siv tus neeg sawv cev siab - lub sijhawm thauj khoom ntau dua li qhov yooj yim qis - hnub noj.
DOE covRoj Teeb Zog Cia Qhov Kev Ntsuas Kev Ntsuashais txog tus nqi ntawm lub sij hawm ntsuas -series cov ntaub ntawv rau kev ntsuas lub zog cia ua haujlwm. Tib lub hauv paus ntsiab lus txhim kho kev kwv yees ua ntej thauj khoom: ntsuas cov profiles feem ntau muaj txiaj ntsig ntau dua li ib hlis tag nrho.
Sib cais qhov tseem ceeb, hloov tau, thiab tsis suav nrog Loads
- Tseem ceeb loads:cov khoom siv uas yuav tsum tau ua haujlwm rau lub sijhawm tsim tag nrho.
- Flexible loads:cov khoom siv uas tuaj yeem khiav tau tsawg teev lossis tsuas yog thaum lub hnub ci tsim muaj.
- Excluded loads:cov khoom siv uas yuav nyob twj ywm thaum muaj hluav taws xob lossis tsawg- lub sijhawm muaj zog.
Hluav taws xob tiv thaiv cua sov, cua txias hauv nruab nrab, lub tshuab rhaub dej loj, hluav taws xob ua noj, tshuab ziab khaub ncaws, thiab EV them nyiaj tuaj yeem tswj hwm cov kev xav tau. Tshem tawm lossis teem sijhawm ib qho siab - lub zog thauj khoom tuaj yeem txo cov roj teeb ntau dua li tshem tawm ntau cov khoom siv hluav taws xob me me.
Xaiv Cov Sijhawm Thaub Qab lossis Hnub Ua Haujlwm
Sij hawm thaub qab rau daim phiaj - Txuas Tsev
Xaiv lub hom phiaj raws li cov qauv siv hluav taws xob hauv zos thiab cov kev pab cuam lub roj teeb yuav tsum muab: kev cuam tshuam luv luv, ib hmos, hluav taws xob hmo ntuj, ib hnub tag nrho, lossis kev kub ntxhov ntev dua. Txiav txim siab seb lub hnub ci them nyiaj puas yuav muaj thaum lub phiaj xwm poob qis thiab seb lub kaw lus puas muaj kev tiv thaiv -load vaj huam sib luag lossis tag nrho lub tsev.
Autonomy Hnub rau Off-Grid System
Autonomy yog lub sijhawm uas lub roj teeb tuaj yeem ua haujlwm rau tus qauv tsim yam tsis muaj kev them nyiaj txaus. Xaiv nws los ntawm kev siv lub hnub ci raws caij nyoog, lub sijhawm huab cua xav tau, kev ntseeg tau ntawm lub tshuab hluav taws xob, kev muaj roj, kev thauj khoom -txoj kev xaiv, kev nkag mus rau qhov chaw, thiab qhov tshwm sim ntawm kev khiav tawm ntawm lub zog.
Ib qhov chaw tej thaj chaw deb uas tsis muaj peev xwm khaws cia tau yuav tsum tau khaws cia ntau dua li cov cuab yeej nrog lub tshuab hluav taws xob tsis siv neeg. Tus naj npawb ntawm cov hnub muaj kev ywj pheej yog li qhov kev txiav txim siab ua haujlwm, tsis yog qhov feem pua ntawm kev lag luam ruaj khov.
Siv lub sijhawm Load Profile thaum muaj
Ob lub tsev muaj peev xwm haus tau 10 kWh ib hnub twg tab sis xav tau cov roj teeb sib txawv thiab cov inverter. Ib tug yuav siv zog maj mam; lwm tus yuav khiav lub twj tso kua mis, microwave, thiab cua txias tib lub sijhawm. Txhua hnub kWh tuaj yeem zoo sib xws thaum ncov kW thiab surge tam sim no sib txawv heev.
Xam cov roj teeb uas siv tau siv DoD, Efficiency, thiab Reserve
Siv lub Chaw Tsim Khoom Siv Tau
Qhov tob ntawm qhov tso tawm piav qhia ntau npaum li cas ntawm qhov ntsuas tau raug tshem tawm thaum lub voj voog. Rau qhov ua ntej sizing, siv cov chaw tsim khoom roj teeb tso cai ua haujlwm lossis teev lub zog siv tau ntau dua li siv ib feem pua ntawm thoob ntiaj teb.
Yog tias lub roj teeb 10 kWh ua haujlwm dhau 90% siv tau ntau, nws muab 9 kWh ntawm cov roj teeb uas siv tau DC lub zog ua ntej lwm qhov kev poob qis raug txiav txim siab:
10 kWh × 0.90=9 kWh
Warranty tej yam kev mob, xeev - ntawm - nqi txwv, tus nqi tso tawm, roj teeb hnub nyoog, kub, firmware nqis, thiab lub neej voj voog uas xav tau tuaj yeem hloov pauv lub qhov rais ua haujlwm.
Siv qhov ntsuas qhov ua tau zoo
Rau lub sijhawm siv hluav taws xob, tus nqi cuam tshuam feem ntau yog ib qho - txoj kev ua tau zoo los ntawm kev khaws cia roj teeb lub zog rau cov khoom tiv thaiv. Round-kev ua haujlwm zoo suav nrog ob qho tib si them thiab tso tawm thiab yuav tsum tsis txhob hloov pauv mus rau ib qho - txoj kev suav sijhawm.
Kuj xyuas seb cov khoom lag luam luam tawm siv lub zog ntsuas ntawm DC sab lossis xa tawm ntawm AC sab. Yog tias cov chaw tsim khoom twb tau hais tias siv tau AC lub zog, rho tawm inverter poob dua tuaj yeem ua ob npaug - suav tib qhov poob.
Sandia National LaboratoriesDOE/EPRI Phau Ntawv Qhia Txog Hluav Taws Xobmuab cov ntsiab lus dav dav ntawm kev cia khoom, lub zog, lub zog, kev ua haujlwm, thiab daim ntawv thov -kev tsim tshwj xeeb.
Thov ib daim duab pob tshab tsim
Ib qho qauv tsim tuaj yeem npog qhov tsis paub tseeb, me me yav tom ntej loads, muaj peev xwm txo lub sij hawm, thiab me me yuam kev hauv kev kwv yees runtime. Qhia nws meej meej raws li tus lej sib npaug, xws li 1.10 rau 10% nyiaj pub dawb.
Cov npoo yuav tsum tsis txhob zais cov ntaub ntawv tsis zoo. Txhim kho qhov kev kwv yees ua ntej, tom qab ntawd ntxiv qhov txhob txwm cia.
Txheeb xyuas qhov kub thiab txias ntawm kev teeb tsa
Qhov kub thiab txias tuaj yeem cuam tshuam rau lub peev xwm siv tau, kev lees txais them nqi, tso tawm lub zog, BMS tus cwj pwm, thiab kev pabcuam lub neej. Tshawb xyuas cov khoom siv qhov ntsuas kub tsawg kawg nkaus, qhov ntsuas qhov ntsuas qhov tsawg kawg nkaus, qhov nkhaus nkhaus, ua - hauv cov cua sov, qhov ntsuas qhov ntsuas, qhov cua txias lossis qhov cua, thiab kev txwv hauv tsev lossis sab nraum zoov.
Tsis txhob siv ib qho txias- huab cua rau txhua lub roj teeb lithium. Chemistry, cell tsim, thermal tswj, thiab BMS chaw sib txawv. Lub ntsiab lus ntawm noLithium roj teeb kev khiav hauj lwm kub ntau yamtuaj yeem pab txheeb xyuas cov khoom lag luam cov ntaub ntawv uas yuav tsum tau kuaj xyuas.
Hloov kWh rau Ah thiab xaiv 12V, 24V, lossis 48V
Lub roj teeb lub zog yuav raug teev nyob rau hauv kilowatt- teev, thaum qee lub tshuab tau piav qhia hauv amp- teev. Kev sib raug zoo yog:
Zog (Wh)=voltage (V) × peev xwm (Ah)
Yog li ntawd:
Peev xwm (Ah)=zog (kWh) × 1,000 ÷ nominal system voltage
| Nominal Khaws Zog | 12V sib npaug | 24V sib npaug | 48V sib |
|---|---|---|---|
| 10 kWh | cav 833ah | Kwv yees li 417 Ah | Kwv yees li 208 Ah |
Cov amp -teev cov nqi no sawv cev kwv yees li tib lub zog nominal. Qhov hluav taws xob siab dua txo qhov tam sim no uas yuav tsum tau xa tawm tib lub zog, uas tuaj yeem txo tus neeg xyuas pib qhov loj me thiab qhov hluav taws xob poob thaum lub kaw lus tsim kom raug.
Yuav Ua Li Cas Xaiv Qhov System Voltage
- 12V:muaj nyob rau hauv me me DC systems thiab me me mobile applications.
- 24V:feem ntau siv nyob rau hauv nruab nrab mobile systems, cabins, marine systems, thiab me me inverter installations.
- 48V:Feem ntau nyob rau hauv cov chaw nres tsheb loj dua vim tias tib lub zog tuaj yeem xa tawm qis dua tam sim no ntawm 12V lossis 24V.
Voltage yog qhov kev txiav txim siab ntawm architecture. Lub roj teeb, inverter, tus nqi tswj, cov khoom siv tiv thaiv, cov khoom siv hluav taws xob, kev sib txuas lus, thiab txhua qhov ncaj qha - cov khoom thauj tam sim no yuav tsum sib haum. Cov tshuab loj dua tuaj yeem siv lub hom phiaj-tsimsiab - cov roj teeb hluav taws xob rau lub zog cia, uas yuav tsum tsis txhob raug kho raws li yooj yim extensions ntawm 48V DIY bank.
Txheeb xyuas Inverter Fais Fab, Pib Surge, thiab BMS txwv
Lub txhab nyiaj roj teeb tuaj yeem muaj kWh txaus thiab tseem tsis tuaj yeem pib lossis ua haujlwm cov khoom siv uas xav tau. Peev xwm txiav txim runtime. Lub hwj chim thiab kev txwv tam sim no txiav txim siab seb lub kaw lus puas tuaj yeem ua haujlwm rau lub nra tag nrho.
Tshawb xyuas Lub Hwj Chim Nruam
Ntxiv cov loads uas yuav ua haujlwm ib txhij. Lub inverter qhov nruam AC tso zis yuav tsum tshaj qhov kev xav tau raws li qhov ntsuas kub thiab kev ua haujlwm.
Kwv yees roj teeb - sab tam sim no nrog:
DC tam sim no (A) ≈ AC load zog (W) ÷ roj teeb voltage (V) ÷ inverter efficiency
Piv txwv li, 4,000 W AC load muab los ntawm 48V roj teeb los ntawm 92% kev ua haujlwm zoo inverter xav tau kwv yees li:
4,000 ÷ 48 ÷ 0.92 ≈ 90.6 A
Lub txhab nyiaj roj teeb, BMS, busbars, cables, fuses, disconnects, thiab terminals yuav tsum tau tsim los rau cov khoom siv tam sim no.
Xyuas lub cev muaj zog thiab Compressor Pib Surge
Cov twj tso kua mis zoo, lub tub yees, lub tub yees, lub tub yees, lub tshuab cua txias, cov cuab yeej ua haujlwm, thiab cov tshuab cua compressors tuaj yeem rub tau ntau lub zog thaum pib dua li lub sijhawm ua haujlwm. Tshawb xyuas:
- Inverter surge zog
- Tso cai surge ntev
- Roj teeb BMS ncov-tam sim no txwv thiab lub sijhawm
- Voltage poob thaum pib
- Tus neeg xyuas pib thiab kev tiv thaiv- ntaus ntawv ntaus nqi
- Txawm hais tias ob peb lub loads tuaj yeem pib tib lub sijhawm
Tus naj npawb ncov tsis muaj lub sijhawm tsis txaus. Lub kaw lus uas tuaj yeem tsim cov khoom tsim tawm siab heev rau ib feem ntawm ib qho thib ob tseem yuav tsis pib lub cev muaj zog uas xav tau nce tam sim no rau ob peb feeb.
Tshawb xyuas roj teeb BMS thiab Parallel Limits
Rau txhua qhov kev thov module, tshuaj xyuas qhov kev tso tawm siab tshaj plaws tam sim no, qhov siab tshaj tawm tam sim no, tso cai lub sijhawm siab tshaj plaws, qhov siab tshaj plaws tam sim no, kev pom zoo inverter ntau yam, qhov siab tshaj qhov sib npaug, pom zoo cov teeb pom kev zoo, thiab kev sib txuas lus sib raug zoo.
Parallel modules tsis tas yuav qhia tam sim no zoo kawg nkaus. Cable ntev, davhlau ya nyob twg tsis kam, kub, lub xeev ntawm tus nqi, thiab module mob tuaj yeem cuam tshuam rau kev sib koom tam sim no. Siv cov chaw tsim khoom pom zoo busbar lossis sib npaug -length wiring arrangement.
Xam cov roj teeb Module suav thiab rov muaj peev xwm
Xam cov naj npawb ntawm cov roj teeb modules
Thaum paub qhov yuav tsum tau muaj peev xwm nominal:
Tus naj npawb ntawm cov modules=yuav tsum tau muaj peev xwm nominal ÷ rated peev rau ib qho khoom siv tau
Hloov mus rau qhov pom zoo tag nrho -module configuration.
Yog hais tias tus tsim yuav tsum tau 14.2 kWh thiab ib tug tshaj module yog nyob rau ntawm 5.12 kWh:
14.2 ÷ 5.12 = 2.77
Lub peev xwm suav yog li ntawd yuav tsum muaj tsawg kawg peb lub modules, muab 15.36 kWh ntawm lub zog ntsuas. Kev xaiv zaum kawg yuav tsum tseem dhau lub hwj chim, BMS, sib npaug, inverter, voltage, kev sib txuas lus, thiab kev kuaj xyuas kev teeb tsa.
Xyuas seb lub roj teeb tuaj yeem rov them sai npaum li cas
Ua ntej kwv yees lub zog uas yuav tsum tau rov qab mus rau lub roj teeb:
Recharge zog rau hauv lub roj teeb ≈ roj teeb lub zog rho tawm ÷ charging efficiency
Tom qab ntawd kwv yees qhov zoo tshaj plaws - lub sijhawm them nyiaj:
Recharge lub sij hawm (teev) ≈ recharge zog (kWh) ÷ nruab nrab roj teeb them fais fab (kW)
Rau lub hnub ci- them nyiaj, tsis txhob siv lub zog ntawm daim ntawv teev npe raws li nws muaj tsis tu ncua. Txheeb xyuas qhov xav tau txhua hli lossis raws caij nyoog, kev thauj khoom nruab hnub, kev txiav, shading, kub, thiab them nyiaj - txwv txwv. CovNREL PVWatts Calculatortuaj yeem muab qhov chaw nyob -raws li kev kwv yees ntawm kev tsim hluav taws xob photovoltaic rau cov kauj ruam tshuaj ntsuam no.
Rau kev tawm -daim phiaj tsim, kev tsim lub hnub ci yuav tsum npog ob qho tib si nruab hnub thiab lub zog xav tau los kho lub roj teeb tom qab tso tawm. Yog tias lub roj teeb tsis tuaj yeem rov qab ua ntej lub sijhawm tsis zoo tom ntej no - hnub ci, kev khaws cia ib leeg yuav tsis daws qhov teeb meem kev ntseeg tau.
Solar Battery Bank Sizing Chart
Cov kab ntawv hauv qab no siv ib hnub ntawm kev tswj hwm tus kheej, 90% cov roj teeb uas siv tau, 92% kev xa khoom zoo, thiab 10% tus qauv tsim. Nws yog ib qho piv txwv xwb.
| Txhua Hnub Tsim Load | Yuav tsum tau Nominal Capacity | Tswv yim txhais |
|---|---|---|
| 2 kWh/hnub | 2.66 kWm 2 | Qhov tseem ceeb me me -load lossis compact off- daim phiaj daim ntawv thov |
| 5 kWh/hnub | 6, 64 kWh | Nruab nrab cabin, RV, los yog txwv lub tsev thaub qab load |
| 10 kWh/hnub | PEB 13.29 kWh | Muaj kev tiv thaiv ntau heev - thauj khoom lossis ua haujlwm tawm - daim phiaj profile |
| 15 kWh/hnub | PEB 19,93 kWh | Cov chaw nyob loj dua nrog kev tswj hwm siab - cov khoom siv fais fab |
| 20 kWh/hnub | 26.57 kWh | Cov khoom loj hauv vaj tse yuav tsum tau ceev faj lub zog thiab rov them cov tshev |
Hloov cov kev xav hloov qhov tshwm sim. Ib feem siv tau qis dua, kev ua haujlwm qis dua, lub sijhawm muaj kev ywj pheej ntev dua, lossis cov npoo loj dua yuav ua rau lub peev xwm nominal xav tau.
Ua hauj lwm hnub ci roj teeb Sizing piv txwv
Piv txwv 1: Small Off-Grid Cabin
Xav tias:
- Lub cev muaj zog txhua hnub: 2.8 kWh
- Autonomy: 1.5 hnub
- Cov roj teeb uas siv tau: 90%
- Kev xa tawm efficiency: 92%
- Tus nqi tsim nyog: 10%
Xav tau nominal muaj peev xwm=2.8 × 1.5 × 1.10 ÷ 0.90 ÷ 0.92 ≈ 5.58 kWh
Ntawm nominal 24V:
5.58 × 1,000 ÷ 24 ≈ 233 Ah
Cov kauj ruam tom ntej yog xaiv ib qho kev pom zoo module teeb tsa saum toj no 5.58 kWh thiab xyuas kom meej tias lub inverter, roj teeb tam sim no txwv, thiab lub caij them nyiaj raws caij nyoog tuaj yeem txhawb nqa lub alarm lub load.
Piv txwv 2: Qhov Tseem Ceeb Hauv Tsev Backup
Xav tias qhov kev tiv thaiv loads nruab nrab ntawm 1.2 kW thiab yuav tsum ua haujlwm rau yim teev.
Yuav tsum muaj lub zog thauj khoom=1.2 kW × 8 teev=9.6 kWh
Siv 90% feem siv tau, 92% kev xa khoom zoo, thiab 10% npoo:
Xav tau nominal muaj peev xwm=9.6 × 1.10 ÷ 0.90 ÷ 0.92 ≈ 12.75 kWh
Cov txiaj ntsig no hais txog lub zog ua haujlwm. Nws tsis ua pov thawj tias lub roj teeb thiab inverter tuaj yeem pib lub cev muaj zog loj tshaj plaws lossis txhawb nqa qhov siab tshaj plaws ib txhij.
Piv txwv 3: Los ntawm Kev Ntsuas Load Table rau Module suav
Siv cov lus piav qhia ntsuas lub rooj saum toj no:
- Qhov tseem ceeb txhua hnub-load zog: 3.71 kWh
- Autonomy: 1.5 hnub
- Cov roj teeb uas siv tau: 90%
- Kev xa tawm efficiency: 92%
- Tus nqi tsim nyog: 10%
Xav tau nominal muaj peev xwm=3.71 × 1.5 × 1.10 ÷ 0.90 ÷ 0.92 ≈ 7.39 kWh
Yog tias pom zoo roj teeb module raug ntsuas ntawm 5.12 kWh:
7.39 ÷ 5.12=1.44 modules
Tus tsim xav tau tsawg kawg yog ob modules los ntawm lub peev xwm, rau 10.24 kWh nominal. Ua ntej lees txais qhov kev teeb tsa, txheeb xyuas ob qho -module txuas ntxiv tam sim no, pib nce siab, them tam sim no, kev pom zoo thaum sib txuas, thiab kev sib txuas lus inverter.
Lub roj teeb 10 kWh yuav kav ntev npaum li cas?
Runtime nyob ntawm seb lub zog siv tau xa mus rau cov khoom thauj, tsis yog qhov ntsuas nominal xwb. Nrog rau 10 kWh nominal roj teeb, 90% siv feem ntau, thiab 92% kev xa khoom:
Siv tau AC zog ≈ 10 × 0.90 × 0.92=8.28 kWh
| Nruab Nrab Load | Kwv yees Runtime |
|---|---|
| 0.3 kW 1 | Kwv yees li 27.6 teev |
| 0.5 kW tsi | Kwv yees li 16.6 teev |
| 1.0 kW tsi | Kwv yees li 8.3 teev |
| 2.0 kW tsi | Kwv yees li 4.1 teev |
| 3.0 kWm | Kwv yees li 2.8 teev |
Cov txiaj ntsig no suav tias qhov nruab nrab ntawm qhov nruab nrab tsis tu ncua thiab tsis suav nrog qhov kub thiab txias ntxiv, kev laus, BMS cia, lossis khoom siv - cov kev txwv tshwj xeeb.
LiFePO4 vs. Lead-Acid Battery Bank Sizing
Roj teeb chemistry cuam tshuam li cas lub peev xwm nominal, tso tawm tus nqi, them cov kev xav tau, kev saib xyuas, thiab kev teeb tsa kev hloov pauv mus rau kev ua haujlwm tau zoo. Rau kev sib piv dav dua, rov xyuas cov nontau hom roj teeb rau lub zog cia.
| Tsim Factor | LiFePO4 | Lead-Acid |
|---|---|---|
| Kev siv hluav taws xob ntau | Feem ntau tsim los rau qhov sib sib zog nqus siv tau ntau, raws li cov khoom lag luam teeb tsa thiab kev lees paub | Feem ntau tsim nrog kev txwv kev tso tawm ntau dua |
| Siab - tus nqi tso tawm | Feem ntau tsawg rhiab dua cov hmoov lead-acid, nyob rau hauv cell thiab BMS txwv | Lub peev xwm muaj peev xwm poob qis dua vim tias qhov tso tawm tau nce ntxiv |
| Tswj kev them nyiaj | Yuav tsum muaj BMS sib xws thiab them profile | Yuav tsum muaj qhov tseeb ntau-theem them profile |
| Tsawg-kub them nqi | Tej zaum yuav raug txwv los ntawm BMS lossis xav tau cua sov | Kev ua tau zoo thiab kev them nqi txais kuj txawv nrog qhov kub thiab txias |
| Kev tu | Feem ntau qis ntawm cov neeg siv qib | Cov roj teeb dej nyab yuav tsum tau kuaj xyuas thiab tu |
| Kev teeb tsa | Ua raws li qhov chaw kaw, qhov sib nrug, thermal, BMS, thiab cov ntawv pov thawj yuav tsum tau ua | Cov khoom siv dej nyab tuaj yeem xav tau qhov cua thiab kev saib xyuas ntxiv |
| Kev ntsuas qhov ntsuas | Siv tau kWh, BMS tam sim no, qhov kub thiab txias, kev sib txuas lus, thiab lub voj voog | Kev txwv kev tso tawm, ntsuas - teev muaj peev xwm, siab - tus nqi cuam tshuam, kev them nqi hluav taws xob, thiab qhov cua |
Rau cov hlau lead-acid roj teeb, siv cov chaw tsim khoom tawm qhov nkhaus thiab ntsuas - teev muaj peev xwm. Ib qho yooj yim Ah hloov dua siab tshiab ntawm nominal voltage yuav overstate muaj zog thaum lub tso tawm tam sim no siab.
Common Solar Battery Sizing Mistakes
- Kev faib ua ob zaug:Yog tias lub zog thauj khoom twb nyob hauv kWh, tsis txhob muab nws los ntawm cov sijhawm thaub qab dua.
- Tsis meej pem kW nrog kWh:khaws cia lub zog thiab lub zog xa tuaj yog cais tshwj xeeb.
- Siv tag nrho tsev neeg noj rau qhov tseem ceeb thaub qab:loj los ntawm kev tiv thaiv loads thaum tus tsim tsis tag nrho - thaub qab hauv tsev.
- Siv nameplate watts raws li qhov nruab nrab noj:Cov khoom siv caij tsheb kauj vab feem ntau siv lub zog tsawg dua li nws cov lus qhia siab tshaj plaws.
- Ignoring standby noj:40 W nruam load noj 0.96 kWh ib hnub twg.
- Siv round- mus txawv tebchaws efficiency nyob rau hauv ib tug - txoj kev xam tsis tau xyuas:phim tus nqi efficiency rau lub zog txoj kev raug xam.
- Tsis quav ntsej lub cev muaj zog- pib surge:txaus kWh tsis lav lub twj tso kua mis zoo lossis compressor pib.
- Tsim rau txhua xyoo - nruab nrab hnub ci tej yam kev mob:off- kev cia siab ntawm kab sib chaws feem ntau yog tswj los ntawm lub caij nyoog zoo tshaj plaws.
- Piv txwv tias cov roj teeb tuaj yeem muab ntxiv tom qab:Kev nthuav dav yuav raug txwv los ntawm hnub nyoog, lub xeev tus nqi, firmware, kev sib txuas lus, kev txwv inverter, lossis cov chaw tsim khoom txoj cai.
- Ignoring lub sij hawm recharge:lub roj teeb uas tsis tuaj yeem rov qab ua ntej lub sijhawm tso tawm tom ntej tsis yog qhov tsim kom muaj zog.
Kev nyab xeeb, Scope, thiab Editorial Methodology
Kab lus no muab cov txheej txheem suav ua ntej rau kev sib piv cov roj teeb uas yuav tsum tau muaj. Nws tsis yog kev kos duab hluav taws xob tsim hluav taws xob, phau ntawv qhia kev teeb tsa, cov cai- kev tshuaj xyuas ua raws, lossis hloov khoom lag luam- tshwj xeeb engineering.
Txoj kev suav suav cais lub zog thauj khoom, lub zog thauj khoom, lub peev xwm nominal, muaj peev xwm siv tau, kev xa khoom zoo, thiab cov qauv tsim kom txhua qhov kev xav tau tuaj yeem kuaj xyuas. Cov piv txwv ua haujlwm tshaj tawm lawv cov kev xav thiab yuav tsum tsis txhob raug kho raws li cov lus pom zoo thoob ntiaj teb.
Kev xaiv cov cuab yeej siv zaum kawg thiab kev teeb tsa yuav tsum raug tshuaj xyuas los ntawm tus kws tshaj lij uas paub txog cov khoom siv hluav taws xob hauv zos, lub tsev, thiab hluav taws xob. Hauv Tebchaws Meskas, UL piav qhia qhov ntawdUL 9540 ntsuas lub zog cia cov tshuab thiab cov cuab yeej siv ua ke, nrog rau cov roj teeb, kev hloov hluav taws xob, kev tswj hwm, kev tiv thaiv, thiab kev sib txuas lus.
FAQ
Q: Kuv yuav xam qhov loj ntawm lub hnub ci roj teeb lub txhab nyiaj li cas?
A: Xam lub zog uas cov khoom xaiv yuav tsum tau txais, kho rau cov roj teeb uas siv tau thiab xa khoom zoo, ntxiv cov qauv tsim qauv, thiab hloov mus rau qhov kev pom zoo module teeb tsa. Tom qab ntawd txheeb xyuas lub zog inverter, lub cev muaj zog surge, BMS tam sim no, them peev xwm, qhov hluav taws xob, thiab kev sib raug zoo.
Q: Muaj pes tsawg lub roj teeb kuv xav tau rau hnub ci?
A: Faib lub peev xwm nominal uas yuav tsum tau muaj los ntawm lub peev xwm ntsuas ntawm ib qho kev sib txuas thiab sib npaug. Lub peev xwm ib leeg tsis txaus; paub meej tias cov module suav kuj txaus siab tam sim no tsis tu ncua, ncov tam sim no, cov kev txwv tsis sib xws, inverter compatibility, thiab them cov cai.
Q: Puas yog 10 KWh roj teeb txaus los khiav lub tsev?
A: Nws tuaj yeem txhawb nqa qhov tseem ceeb rau ob peb teev, tab sis lub sijhawm ua haujlwm yog nyob ntawm qhov nruab nrab ntawm kev thauj khoom, lub peev xwm siv tau, kev ua tau zoo, qhov kub thiab txias, thiab lub roj teeb. Cua sov, cua txias, dej cua sov, ua noj, twj tso kua mis, thiab EV them nyiaj tuaj yeem txo lub sijhawm ua haujlwm sai.
Q: Ntev npaum li cas Lub Hnub Ci Roj Teeb 10 KWh?
A: Runtime yog kwv yees li usable xa lub zog faib los ntawm nruab nrab load. Raws li qhov piv txwv piv txwv hauv tsab xov xwm no, 10 kWh nominal roj teeb muab txog 8.28 kWh rau AC loads, uas yog kwv yees li 8.3 teev ntawm 1 kW nruab nrab load.
Q: Kuv Puas Yuav Loj Ib Lub Roj Teeb Hauv Tsev Los ntawm kuv daim nqi hluav taws xob?
A: Ib daim nqi muaj txiaj ntsig zoo rau kev kwv yees qhov nruab nrab noj, tab sis nws tsis qhia tias cov khoom thauj twg yuav tsum tau ua haujlwm thaum muaj hluav taws xob lossis thaum lawv ua haujlwm. Cov ntaub ntawv ncua sij hawm thiab cov cuab yeej siv- qib tiv thaiv- cov npe thauj khoom muaj txiaj ntsig zoo dua rau kev ntsuas qhov loj me.
Q: Puas yog Lub Hnub Ci Loj Loj Txo Cov Roj Teeb Loj?
A: Nws tuaj yeem txo qhov zaus thiab qhov tob ntawm qhov tso tawm thaum lub hnub ci muaj, tab sis nws tsis tshem tawm lub zog uas yuav tsum tau ua thaum lub sij hawm lub hom phiaj tsis muaj hnub ci txaus. Array thiab roj teeb loj yuav tsum tau soj ntsuam ua ke.
Q: Kuv Puas Yuav Xaiv 12V, 24V, lossis 48V?
A: Xaiv qhov hluav taws xob los ntawm kev ua tiav qhov system architecture, tsis yog los ntawm Ah tus lej ib leeg. Cov tshuab hluav taws xob loj dua feem ntau tau txais txiaj ntsig los ntawm qhov hluav taws xob ntau dua vim tias tib lub zog tuaj yeem xa mus rau qis tam sim no, tab sis txhua yam yuav tsum sib haum.
Q: Kuv puas yuav tsum tau ntxiv roj teeb muaj peev xwm ntxiv rau yav tom ntej Expansion?
A: Cov paj me me tuaj yeem npog qhov kev loj hlob yav tom ntej. Ua ntej tso siab rau tom qab nthuav dav, lees paub cov chaw tsim khoom cov cai rau hnub nyoog module, firmware, lub xeev tus nqi, kev sib txuas lus, thiab qhov siab tshaj plaws suav nrog.
Xaus
Kev ntseeg tau lub hnub ci roj teeb lub txhab nyiaj sizing pib nrog ntsuas lub zog thiab lub hom phiaj kev ua haujlwm kom meej. Siv nruab nrab lub zog thauj khoom sib npaug los ntawm cov xuab moos thaub qab thaum lub tswv yim nyob hauv kW, lossis siv lub zog thauj ncaj qha thaum nws twb nyob hauv kWh. Kho ib zaug rau lub peev xwm siv tau, qhov kev ntsuas qhov tseeb, thiab pob tshab paj.
Tom qab ntawd validate qhov tshwm sim tawm tsam lub roj teeb tiag tiag, inverter, BMS, them qhov chaw, qhov system voltage, module configuration, ib puag ncig txwv, thiab installation yuav tsum tau. Qhov tseem ceeb tshaj plaws hnub ci roj teeb muaj peev xwm tshuab xam zauv tsis yog ib qho uas ua rau ntau tshaj plaws; nws yog ib qho uas ua rau txhua qhov kev xav pom thiab kuaj xyuas seb lub kaw lus ua tiav tuaj yeem xa thiab rov ua kom lub zog xav tau yam nyab xeeb.