Next Generation Tshiab Lub Cev Muaj Zog Tsav Txheem Dua Tshiab - SiC Inverter
Hauv kev tsav tsheb fais fab, lub inverter yog ib qho tseem ceeb rau kev hloov ua lub zog AC / DC, thiab siv rau kev siv hluav taws xob rov qab thaum tsav tsheb los yog lub zog ntawm lub cav. Lub lag luam yog nce xav rau controllers nyob rau hauv cov nqe lus ntawm lub zog hloov efficiency, hwj chim ceev, thiab nqi. Lub hwj chim module yog qhov tseem ceeb ntawm cov inverter ua kom muaj kev sib kis tau zoo tshaj plaws thiab siab zog. Tam sim no, feem ntau ntawm cov hluav taws xob tsav tsheb inverters feem ntau yog nyob rau ntawm Si Si (silicon) ntaus IGBT (insulated rooj vag bipolar transistor) zog module. Tus qauv tsim muaj qhov tsis zoo ntawm kev hloov tsawg thiab kev poob loj, uas txwv kev txhim kho ntawm lub hwj chim ntawm tus neeg tsav tsheb.
SiC (silicon carbide) muaj peb qhov zoo tshaj S: poob qis; thermal conductivity dua. Cov cwj pwm no txhais tau hais tias Siv SiC siv tau rau hauv kev siab zog, kev hloov siab zog, kev siv lub zog loj ceev. Nrog rau kev txhim kho ntawm SiC module fais fab theem, SiC yuav yog ib qho khoom haum tsim hluav taws xob ntxiv rau kev tsav tsheb hluav taws xob. Kev siv SiC cov cuab yeej yog qhov zoo txhais tau los ua kom muaj hwj chim ceev ceev ntawm cov tsav tsheb hluav taws xob. Tam sim no, ntau thiab ntau cov kev tshawb fawb tau siv rau daim ntawv thov ntawm SiC fais fab modules rau cov tsav tsheb-tsav inverters. Toyota Motor Corporation tau siv SiC zog modules rau hybrid tsheb.
Muab piv rau Si li, kev siv SiC cov cuab yeej ua tau zoo heev.
Kev ua haujlwm siab thiab kev nce nqi kev tsheb
Txij thaum lub sij hawm tig-ntawm voltage ntawm SiIGBT tuaj pom cov duab yam ntxwv: txawm hais tias tus nyob rau tam sim no me me, qhov IGBT muaj qhov loj pib tig-rau voltage nco. Qhov tig-ntawm voltage nco ntawm SiC MOSFET ua rau nws muaj tus cwj pwm tsis txaus: nws tig-ntawm voltage nco yog proportional to turn-on tam sim no. Qhov ob yam sib txawv ntawm cov teeb meem ntawm SiIGBT thiab SiCMOSFET txiav txim siab tias kev tswj tsis tau ntawm SiCMOSFET siab tshaj qhov ntawm SiIGBT thaum lub sij hawm tseem loj heev, thiab kev tswj tsis tau ntawm SiCMOSFET zoo dua li ntawm SiIGBT hauv feem ntau tam sim no. Nyob rau hauv tag nrho lub tsheb ua hauj lwm kev mob, feem ntau ntawm lawv yog cov me me tam sim no ua hauj lwm, thiab loj loj ua hauj lwm mob account rau ib feem me me nyob rau hauv tag nrho txoj kev spectrum. Nrog rau txoj kev loj hlob ntawm SiC nti tshuab, kev tawm tsam ntawm SiCMOSFET yuav zoo dua SiigBT yav tom ntej.
Yog li, tom qab siv SiC, qhov kev hloov dua siab tshiab ntawm cov inverter yuav ua tau zoo dua tuaj, yog li ntawd rau tib lub roj teeb pob, kev siv cov SiC ntaus tau ua kom zoo dua cov nqi dhia ntawm tag nrho cov tsheb.
Kev loj me thiab siab zog
Vim tias tsis tau poob ntawm SiC khoom, SiC cov cuab yeej ua tau zoo li qub tso zis nrog cov me me ntawm thaj chaw li Si. Tib lub sij hawm, SiC cov cuab yeej ua hauj lwm ntawm high frequencies, pab txo qhov loj ntawm cov khoom txav ntawm lub tshuab fais fab. SiC inverter tsim los ntawm United States Electronics yog ntau tshaj ib nrab ntawm qhov kev tso cai Si inverter ntawm tib lub zog.
High switching zaus kom optimize system suab nrov
Tam sim no, qhov kev hloov ntawm Si inverter yog 5-10 kHz, thiab lub kaw lus yuav ua rau 5-20 kHz hloov suab nrov, uas yog yooj yim ua rau tsis xis nyob hauv qhov ntau yam uas tau hnov los ntawm tib neeg lub pob ntseg. Nrog lub SiC ntaus ntawv, los ntawm qhov hloov qhov sib txawv rau 40 kHz, qhov nrov nrov zaus uas tau los ntawm lub tshuab yuav ua tau ntau tshaj qhov ntau yam uas tau hnov los ntawm tib neeg lub pob ntseg. Nyob rau tib lub sij hawm, lub sij hawm hloov tau nce kom pab txo cov kev tswj hwm kev tswj hwm tam sim no, kom txo cov suab nrov electromagnetic thiab kev txhim kho kev tsav tsheb ntawm lub tsheb.
Tab sis tam sim no siv SiC cov cuab yeej kuj pib muaj kev cov nyom loj.
SiC cuab yeej yog kim kim
Txij li tam sim no tus SiC nti tsis ua raws li Sis, Si rau 4-nti wafers, cov ntaub ntawv siv tsis yog siab, thiab Si nti chip wafer tau tsim rau 8 nti los yog 12 ntiv. Ntawm qhov tod tes, qhov kev thov rau kev ua lag luam SiCos tseem tsis tau nce, thiab ntawm qhov tod tes, tus nqi ntawm SiC daim tawv nyias kuj nce siab.
SiC ntaus ntim tshuab kev lag luam lags behind
Tam sim no, ntau lub tshuab hluav taws xob feem ntau hauv lub ntiaj teb tau tshawb nrhiav thiab tsim SiC chips, tab sis hauv kev sib piv, kev tsim cov ntim tshuab rau SiC cov lag luam hauv qab. Piv nrog Si nti, SiC nti tau kub dua thiab nws cov haujlwm khiav hauj lwm muaj peev xwm tshaj 200 degrees. Txawm licas losxij, kev siv tshuab seev hauv SiC module tseem tsim nrog Si module, thiab nws qhov kev cia siab thiab lub neej tsis tau txog 200 degrees. Cov haujlwm xav tau. Daim ntawv thov kev ua ntawm SiC nti raug txwv.
Tsav tiv thaiv technology
Piv nrog rau Si nti, qhov luv luv ntawm kev tiv thaiv ntawm lub peev xwm ntawm SiC nti zoo heev txo. Yog li, thiaj li yuav tiv thaiv kom tsis txhob luv luv ntawm SiC ntaus ntawv thaum lub sijhawm ua haujlwm, tus tsav hluav taws xob yuav tsum muaj lub sijhawm teb tsawg dua, uas yog npaj rau kev tiv thaiv kev siv tshuab ntawm SiC ntaus tsav tsheb. Ib qho teeb meem loj.
Thermal tsim
Vim hais tias thaj chaw ntawm ib tus ntus SiC yog me me, thiaj li ua tiav cov hluav taws xob tso zis, nws yog ib qho tsim nyog yuav tau siv ntau daim tawv me hauv kev ua haujlwm. Yuav ua li cas kom tsim nyog layout tsim ntawm lub nti hauv lub module kom paub tseeb tias thermal tshuav ntawm lub chips thiab saib xyuas kub kub kub ntawm lub nti yog ib qho nyuaj kev sib tw.
EMI thiab rwb thaiv teeb meem ua rau muaj kev hloov siab ceev
Piv nrog Si li, qhov hloov ceev ntawm SiC cov khoom yuav ua tau zoo dua tuaj, thiab di / dt thiab dv / dt nyob rau hauv cov txheej txheem hloov tau zoo, tab sis qhov no yuav pab txo qhov kev poob ntawm lub cuab yeej, tab sis ntawm kev txhais tes yuav tsim muaj teeb meem loj EMI, yuav ua li cas tsim tus tswj kev tswj thiab lim circuit rau suppress EMI tseem yog ib qhov teeb meem tseem ceeb. Tib lub sijhawm, high dv / dt adversely cuam tshuam lub rwb thaiv tsev ntawm lub qeeb qeeb, uas yuav ua rau kom cov laus ntawm cov thev dej uas tsis zoo xws li cov xaim hlau nplaum thiab lub nplhaib insulating, yog li nqa cov teeb meem tshiab rau lub rwb thaiv tsev ntawm lub tshuab.
mus sum
Txawm hais tias tus txheej txheem kev ua SiC tam sim no tsis yog raws li kev paub zoo li Si, txoj kev loj hlob ntawm SiC pob kuj yog lagging, thiab tus nqi ntawm lub cuab yeej yog ob peb zaug siab tshaj qhov ntawm Si. Txawm li cas los xij, nrog rau qhov kev siv cuab yeej technology thiab cov neeg xav paub ntxiv rau kev ua lag luam, cov kev tsis zoo no yuav maj mam tawm mus, thiab SiC cov cuab yeej yog cov khoom siv hluav taws xob kom siab, siab sib hloov, tsis tshua qis thiab lwm yam. Qhov zoo tseem pom tau tias nws yuav siv ntau thiab ntau dua los ua ib yam khoom sib tw yav tom ntej.
