Transformer rau EV Txuas Chaw Nres Tsheb
IbEV charging chaw nres tsheb transformeryog ib feem tseem ceeb ntawm cov khoom siv hluav taws xob uas txuas rau daim phiaj siv hluav taws xob rau EV cov khoom siv them nyiaj. Raws li lub zog them nyiaj nce ntxiv -los ntawm cov pa AC them rau 150 kW, 350 kW, lossis siab dua DC them ceev ceev- lub tshuab hloov pauv tseem ceeb tshwj xeeb rau kev hloov pauv hluav taws xob, muaj peev xwm, lub zog zoo, thiab kev ua haujlwm ruaj khov.
Rau qhov chaw them nyiaj ib txwm, lub tshuab hloov pauv theem nruab nrab -voltage utility power down to the low-voltage level xav tau los ntawm EV charging system. DC cov khoom siv them nyiaj ces hloov lub zog AC rau hauv kev tswj DC fais fab rau lub tsheb roj teeb. IEC 61851-23: 2023 npog DC EV cov khoom siv nrog cov khoom siv hluav taws xob -sab voltages mus txog 1,000 V AC lossis 1,500 V DC thiab cov zis tawm sab nraud txog 1,500 V DC.
Yuav ua li cas lub Transformer ua hauj lwm nyob rau hauv ib tug EV Charging Chaw nres tsheb
Ib txoj hauv kev muaj zog zoo li no:
Utility Grid → Nruab nrab-Voltage Switchgear → EV Charging Transformer → Low-Voltage Switchgear → EV Chargers → Fais Tsheb
Piv txwv li, ib qhov chaw txais11 kV lossis 13.8 kVKev siv hluav taws xob siv hluav taws xob tuaj yeem siv lub tshuab hluav taws xob los muab400V, 415V, 480V, lossis lwm yam uas yuav tsum tau muaj tsawg-voltage movmus rau cov khoom siv them nyiaj.
Qhov tseeb voltage nyob ntawm qhov chaw siv hluav taws xob hauv zos thiab cov chaw tsim khoom charger cov cai.
Yuav Ua Li Cas Loj Rau Transformer rau EV Charging
Transformer sizing yuav tsum tsis tsuas yog sib npaug ntawm tag nrho cov charger nameplate ratings. Tus qauv tsim yuav tsum xav txog kev them nyiaj ib txhij, kev ua haujlwm zoo, lub zog muaj zog, kev pabcuam thauj khoom, kev sib haum xeeb, thiab kev npaj nthuav dav. Kev sib raug zoo ua ntej tseem ceeb yog:
Transformer kVA ≈ Tag nrho cov charger kW × Simultaneity ÷ (Efficiency × Power Factor) + Pab Load + Expansion Margin
Piv txwv li, xav txog qhov chaw them nyiaj EV nrog yim 150 kW DC chargers:
Tag nrho txuas txuas them lub zog:1,200 kW
Yog tias txhua lub chargers tuaj yeem ua haujlwm ib txhij, qhov hluav taws xob tuaj yeem ncav cuag 1.2 MW
Tom qab xav txog kev ua haujlwm zoo, lub zog muaj zog, cov cuab yeej pabcuam, thiab lub peev xwm yav tom ntej, ib qho kev hloov pauv hauv lub1,500-2,000 kVA ntau yamtej zaum yuav raug txiav txim siab rau kev tsim ua ntej
Qhov kev ntsuam xyuas zaum kawg yuav tsum tau lees paub los ntawm kev tshawb fawb txog hluav taws xob thiab cov khoom siv hluav taws xob sib cuam tshuam.
Transformer Capacity Piv txwv
| EV Charging Application | Hom Txuas Txuas Load | Muaj peev xwm Transformer Range |
|---|---|---|
| Me me AC charging site | 100-300 kW | 150-500 kVA |
| 4-6 DC ceev chargers | 400-900 kWm | 630-1,250 kVA |
| 6-10 siab - zog DC chargers | 1-2 MW | 1,500-2,500 kVA |
| Loj ceev -them them hub | 2–{1}} MW | 2,500–6, 300+ kVA |
Cov no yogua ntej ntau yam es tsis yog universal specifications. Kev xaiv ntawm transformer tiag tiag nyob ntawm qhov hnyav ntawm lub charger ratings thiab lub site load profile.
Hom Transformer zoo tshaj plaws?
Rau EV charging infrastructure, ob peb transformer configurations tuaj yeem ua haujlwm zoo.
Roj-immersed transformersyog ib qho kev xaiv rau sab nraum zoov siab - lub peev xwm them hubs. Lawv muab kev ua haujlwm zoo thermal thiab tuaj yeem muab tau ua cov ntaub qhwv -mounted lossis lwm yam kev faib tawm sab nraum zoov.
Qhuav- hom transformerstuaj yeem ua kom zoo nkauj rau cov chaw them nyiaj sab hauv tsev, chaw nres tsheb, chaw ua lag luam, thiab cov chaw uas muaj hluav taws kub thiab ib puag ncig kev xav pom zoo rau kev tsim kom qhuav.
Rau siab - fais fab them chaw nres tsheb, xaiv transformer yuav tsum xav txog:
High nruam loading
Harmonic tam sim no los ntawm lub zog hluav taws xob
Kev tswj hluav taws xob
Transformer impedance
Txoj kev txias
Luv -circuit withstand peev
Suab nrov
Sab nraum zoov tej yam kev mob
Lub peev xwm them nyiaj yav tom ntej
Kev tiv thaiv kev siv hluav taws xob
Harmonics tsim nyog tau txais kev saib xyuas tshwj xeeb vim tias EV chargers yog lub zog- cov khoom siv hluav taws xob. Nyob ntawm tus qauv charger, kev ua tau zoo sib haum xeeb thiab cov cua kub hloov pauv yuav tsum raug ntsuas es tsis yog qhov kev lag luam ib txwm siv -load profile.
Vim li cas Transformer Design Matters rau Fast Charging
Lub chaw nres tsheb them nyiaj tuaj yeem muaj qhov xav tsis thoob xav tau qhov profile. Ob peb lub tsheb tuaj yeem pib them nyiaj nyob rau tib lub sijhawm, tsim kev hloov pauv sai hauv kev thov hluav taws xob.
Ib qho undersized transformer tuaj yeem ua rauQhov kub thiab txias ntau dhau, qhov hluav taws xob poob qis, kev tiv thaiv kev mus ncig, txo lub charger tso zis, thiab muaj peev xwm nthuav dav. Ntawm qhov tod tes, oversizing lub transformer nce nqi peev thiab tuaj yeem nce qhov tsis tsim nyog tsis muaj -load poob.
Vim li no, zoo EV charging transformer tsim sib npaugmuaj peev xwm, efficiency, hwj chim zoo, kev cia siab, thiab yav tom ntej expansion.
Transformer rau EV Charging Chaw nres tsheb: Cov ntsiab lus tseem ceeb
Thaum qhia txog lub tshuab hluav taws xob rau EV them qhov project, qhov kev yuav khoom yuav tsum ib txwm suav nrog:
| Specification | Kev txiav txim siab |
|---|---|
| Transformer hom | Roj -immersed los yog qhuav- hom |
| Rated peev | Raws li xam qhov xav tau ntau tshaj plaws |
| Thawj qhov voltage | Kev siv hluav taws xob- tshwj xeeb, xws li . 11 kV, 13.8 kV |
| Secondary voltage | Charger - tshwj xeeb, xws li . 400 V, 415 V, 480 V |
| Ntau zaus | 50 Hz lossis 60 Hz |
| Theem | Peb -theem rau feem ntau cov chaw them nyiaj ua lag luam |
| Txias | ONAN, ONAF, los yog kom qhuav - hom txias |
| Impedance | Xaiv raws li qhov system txhaum theem thiab kev cai voltage |
| Harmonics | Ntsuam xyuas lub charger - tsim cov kev sib haum xeeb tam sim no |
| Coj mus rhaub changer | Nyob ntawm qhov hluav taws xob hluav taws xob hloov pauv |
| Npog | Sab hauv, sab nraum zoov, ncoo -mounted, thiab lwm yam. |
| Cov qauv | Siv tau IEC, IEEE, kev siv hluav taws xob, thiab cov kev cai hauv zos |
Cov khoom siv them nyiaj EV nws tus kheej yog tswj hwm los ntawm IEC 61851 series; IEC 60364-7-722 tshwj xeeb hais txog kev teeb tsa hluav taws xob uas muab EVs thiab circuits tso cai rau hluav taws xob rov qab los ntawm EVs.
Xaiv lub Transformer rau EV Charging Project
Rau cov chaw tsim khoom xws liJiangsu Yawei Transformer, lub cib fim tsis yog tsuas yog muab lub tshuab hluav taws xob nrog qhov ntsuas kVA loj dua. Lub transformer yuav tsum tau tsim nyob ib ncig ntawm daim ntawv thov them tag nrho- lub peev xwm ntawm lub charger, qhov hluav taws xob hluav taws xob, qhov chaw ib puag ncig, kev xav tau ib txhij them, cov yam ntxwv sib haum xeeb, thiab kev nthuav dav yav tom ntej.
Rausiab - fais fab EV them chaw nres tsheb, peb -theem roj-immersed transformer, ncoo-mounted transformer, los yog qhuav-hom transformer tuaj yeem tsim kho raws li qhov project yuav tsum tau ua.
Q: Ntev npaum li cas koj tuaj yeem xa cov transformer?
A: Nws nyob ntawm qhov ntau thiab muaj peev xwm ntawm transformer, feem ntau nyob rau hauv ib lub hlis txij li hnub kos duab lees paub los ntawm cov neeg yuav khoom.
Q: Ntev npaum li cas koj tuaj yeem muab qhov kev lees paub zoo?
A: 24 lub hlis txij li hnub transformer ua haujlwm.
Q: Koj txais txoj kev them nyiaj dab tsi?
A: T / T (hloov pauv) nyiam, L / C ob leeg txais.
