Hauv cov khoom siv hluav taws xob niaj hnub no, lub hauv paus ntawm ib lub cuab yeej feem ntau txiav txim siab txog lub peev xwm ntawm tag nrho lub cev. Cov khoom siv silicon carbide (SiC) tau tshwm sim los ua cov khoom siv hloov pauv, ua rau muaj tiam tshiab ntawm cov tshuab hluav taws xob siab, zaus siab, thiab txuag hluav taws xob. Los ntawm kev npaj atomic ntawm cov khoom siv crystalline mus rau lub tshuab hloov pauv hluav taws xob tag nrho, SiC tau tsim nws tus kheej ua tus neeg tseem ceeb ntawm cov thev naus laus zis hluav taws xob tiam tom ntej.
Lub Substrate: Lub Hauv Paus Khoom Siv ntawm Kev Ua Tau Zoo
Lub substrate yog qhov pib ntawm txhua lub cuab yeej fais fab raws li SiC. Tsis zoo li cov silicon ib txwm muaj, SiC muaj qhov dav bandgap ntawm kwv yees li 3.26 eV, kev ua kom sov siab, thiab lub zog hluav taws xob tseem ceeb. Cov khoom siv no tso cai rau SiC cov khoom siv ua haujlwm ntawm qhov hluav taws xob siab dua, qhov kub siab dua, thiab qhov ceev hloov pauv sai dua. Qhov zoo ntawm lub substrate, suav nrog crystalline uniformity thiab defect density, cuam tshuam ncaj qha rau kev ua haujlwm ntawm lub cuab yeej, kev ntseeg siab, thiab kev ruaj khov mus sij hawm ntev. Cov substrate defects tuaj yeem ua rau muaj cua sov hauv zos, txo qhov hluav taws xob tawg, thiab qis dua tag nrho cov kev ua haujlwm ntawm lub cev, hais txog qhov tseem ceeb ntawm cov khoom siv precision.
Kev nce qib hauv cov thev naus laus zis substrate, xws li qhov loj dua ntawm wafer thiab txo qhov tsis zoo, tau txo cov nqi tsim khoom thiab nthuav dav ntawm ntau yam kev siv. Piv txwv li, hloov ntawm 6-nti mus rau 12-nti wafers, ua rau thaj chaw siv tau ntau dua rau ib wafer, ua rau muaj ntau dua thiab txo cov nqi ib-chip. Qhov kev nce qib no tsis yog tsuas yog ua rau cov khoom siv SiC yooj yim dua rau cov ntawv thov siab xws li tsheb fais fab thiab cov inverters kev lag luam tab sis kuj ua rau lawv siv tau sai dua hauv cov lag luam tshiab xws li cov chaw khaws ntaub ntawv thiab cov khoom siv them ceev.
Kev Tsim Kho Khoom Siv: Siv Qhov Zoo ntawm Cov Khoom Siv
Kev ua tau zoo ntawm lub hwj chim module yog khi ze rau lub cuab yeej architecture ua rau ntawm lub substrate. Cov qauv siab heev xws li trench-gate MOSFETs, superjunction devices, thiab double-sided cooled modules siv cov khoom hluav taws xob thiab thermal zoo dua ntawm SiC substrates los txo qhov kev poob ntawm kev sib txuas thiab kev hloov pauv, nce lub peev xwm nqa tam sim no, thiab txhawb nqa kev ua haujlwm siab.
Piv txwv li, Trench-gate SiC MOSFETs txo qhov kev tiv thaiv conduction thiab txhim kho qhov ceev ntawm lub cell, ua rau muaj kev ua haujlwm zoo dua hauv kev siv hluav taws xob siab. Cov khoom siv superjunction, ua ke nrog cov khoom siv zoo, ua rau muaj kev ua haujlwm siab-voltage thaum tswj kev poob qis. Cov txheej txheem txias ob sab txhim kho kev tswj hwm thermal, tso cai rau cov modules me dua, sib dua, thiab txhim khu kev qha dua uas tuaj yeem ua haujlwm hauv qhov chaw nyuaj yam tsis muaj cov txheej txheem txias ntxiv.
Kev Cuam Tshuam ntawm Theem System: Los ntawm Cov Khoom Siv mus rau Converter
Qhov cuam tshuam ntawmCov khoom siv SiCtxuas ntxiv mus dhau cov khoom siv ib leeg mus rau tag nrho cov tshuab fais fab. Hauv cov inverters tsheb fais fab, cov khoom siv SiC zoo ua rau 800V-chav kawm ua haujlwm, txhawb kev them sai thiab txuas ntxiv qhov kev tsav tsheb. Hauv cov tshuab hluav taws xob rov ua dua tshiab xws li photovoltaic inverters thiab cov hloov pauv cia hluav taws xob, cov khoom siv SiC uas tsim los ntawm cov khoom siv siab heev ua tiav cov txiaj ntsig hloov pauv siab dua 99%, txo cov kev poob hluav taws xob thiab txo qhov loj me thiab qhov hnyav ntawm lub cev.
Kev ua haujlwm zaus siab uas ua los ntawm SiC txo qhov loj ntawm cov khoom passive, suav nrog cov inductors thiab capacitors. Cov khoom passive me me tso cai rau kev tsim cov qauv compact thiab thermally zoo dua. Hauv kev teeb tsa kev lag luam, qhov no txhais tau tias kev siv hluav taws xob tsawg dua, qhov loj me ntawm lub thawv me dua, thiab kev ntseeg siab ntawm lub kaw lus zoo dua. Rau cov ntawv thov hauv tsev, kev ua haujlwm zoo dua ntawm SiC-based inverters thiab converters pab txhawb kev txuag nqi thiab txo qhov cuam tshuam rau ib puag ncig dhau sijhawm.
Lub Flywheel Tshiab: Cov Khoom Siv, Cov Cuab Yeej, thiab Kev Sib Koom Ua Ke
Kev tsim cov khoom siv hluav taws xob SiC ua raws li lub voj voog uas txhawb nqa tus kheej. Kev txhim kho hauv qhov zoo ntawm cov khoom siv thiab qhov loj ntawm wafer txo cov nqi tsim khoom, uas txhawb nqa kev siv dav dav ntawm cov khoom siv SiC. Kev siv ntau ntxiv ua rau muaj ntau qhov ntau lawm, txo cov nqi ntxiv thiab muab cov peev txheej rau kev tshawb fawb txuas ntxiv hauv cov khoom siv thiab cov cuab yeej tshiab.
Cov kev nce qib tsis ntev los no qhia tau qhov teebmeem ntawm lub flywheel no. Kev hloov pauv ntawm 6-nti mus rau 8-nti thiab 12-nti wafers ua rau thaj chaw siv tau ntau dua thiab cov zis tawm ib wafer. Cov wafers loj dua, ua ke nrog kev nce qib hauv cov qauv khoom siv xws li trench-gate designs thiab ob sab txias, tso cai rau cov modules ua haujlwm siab dua ntawm tus nqi qis dua. Lub voj voog no nrawm dua thaum cov ntawv thov ntim ntau xws li tsheb fais fab, kev tsav tsheb hauv kev lag luam, thiab cov tshuab hluav taws xob rov ua dua tshiab tsim kev thov tas mus li rau cov khoom siv SiC zoo dua thiab txhim khu kev qha.
Kev Ntseeg Tau thiab Cov Txiaj Ntsig Mus Ntev
Cov khoom siv SiC tsis yog tsuas yog txhim kho kev ua haujlwm xwb tab sis kuj txhim kho kev ntseeg siab thiab kev ruaj khov. Lawv cov thermal conductivity siab thiab lub zog tawg siab tso cai rau cov khoom siv kom ua haujlwm tau zoo heev, suav nrog kev hloov pauv kub sai thiab kev hloov pauv hluav taws xob siab. Cov modules ua rau cov khoom siv SiC zoo qhia txog lub neej ntev dua, txo qis kev ua tsis tiav, thiab kev ua haujlwm zoo dua qub dhau sijhawm.
Cov ntawv thov tshiab, xws li kev xa hluav taws xob DC siab, tsheb ciav hlau hluav taws xob, thiab cov tshuab hluav taws xob hauv chaw khaws ntaub ntawv siab, tau txais txiaj ntsig los ntawm SiC cov khoom siv hluav taws xob thiab cua sov zoo tshaj plaws. Cov ntawv thov no xav tau cov khoom siv uas tuaj yeem ua haujlwm tas mus li hauv qab kev ntxhov siab thaum tswj kev ua haujlwm zoo thiab tsawg kawg nkaus poob zog, qhia txog lub luag haujlwm tseem ceeb ntawm cov khoom siv hauv kev ua haujlwm ntawm lub kaw lus.
Cov Kev Taw Qhia Yav Tom Ntej: Mus rau Cov Modules Fais Fab Txawj Ntse thiab Sib Koom Ua Ke
Cov thev naus laus zis SiC tiam tom ntej tsom mus rau kev sib koom ua ke ntse thiab kev ua kom zoo dua qub. Cov modules fais fab ntse sib xyaw cov sensors, cov circuits tiv thaiv, thiab cov tsav tsheb ncaj qha rau hauv lub module, ua rau muaj kev saib xyuas tiag tiag thiab txhim kho kev ntseeg siab. Cov kev sib xyaw ua ke, xws li kev sib xyaw SiC nrog cov khoom siv gallium nitride (GaN), qhib cov cib fim tshiab rau cov kab ke ultra-high-frequency, high-efficiency.
Kev tshawb fawb kuj tseem tab tom tshawb nrhiav kev tsim kho SiC substrate siab heev, suav nrog kev kho qhov chaw, kev tswj qhov tsis zoo, thiab kev tsim cov khoom siv quantum-scale, los txhim kho kev ua tau zoo ntxiv. Cov kev tsim kho tshiab no yuav nthuav cov ntawv thov SiC mus rau thaj chaw uas yav dhau los txwv los ntawm kev txwv thermal thiab hluav taws xob, tsim cov lag luam tshiab rau cov tshuab hluav taws xob ua haujlwm tau zoo.
Xaus lus
Txij li ntawm cov crystalline lattice ntawm lub substrate mus rau lub converter fais fab uas sib xyaw ua ke tag nrho, silicon carbide ua piv txwv txog kev xaiv cov khoom siv tsav kev ua haujlwm ntawm lub system. Cov khoom siv SiC zoo ua rau cov qauv khoom siv siab heev, txhawb nqa kev ua haujlwm siab thiab zaus siab, thiab xa cov txiaj ntsig zoo, kev ntseeg siab, thiab kev sib dhos ntawm theem system. Raws li kev thov zog thoob ntiaj teb loj hlob thiab cov khoom siv hluav taws xob ua lub hauv paus tseem ceeb rau kev thauj mus los, lub zog rov ua dua tshiab, thiab kev lag luam automation, SiC substrates yuav txuas ntxiv ua lub hauv paus thev naus laus zis. Kev nkag siab txog kev taug kev los ntawm substrate mus rau converter qhia txog yuav ua li cas ib qho kev tsim kho tshiab me me tuaj yeem hloov kho tag nrho cov toj roob hauv pes ntawm cov khoom siv hluav taws xob.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-18-2025