Ib tug nees zoo tsim nyog tau ib lub rooj zaum zoo! Yuav kom siv tau tag nrho cov txiaj ntsig ntawm SiC cov khoom siv, nws tseem ceeb heev uas yuav tsum txuas lub circuit system nrog cov capacitors tsim nyog. Txij li kev tswj hwm lub zog tseem ceeb hauv cov tsheb fais fab mus rau cov xwm txheej tshiab muaj zog siab xws li photovoltaic inverters, cov yeeb yaj kiab capacitors maj mam dhau los ua mainstream, thiab kev ua lag luam xav tau cov khoom lag luam kim heev.
Tsis ntev los no, Shanghai Yongming Electronic Co., Ltd. tau tsim cov DC support film capacitors, uas muaj plaub qhov zoo tshaj plaws ua rau lawv haum rau Infineon's xya-tiam IGBTs. Lawv kuj pab daws cov teeb meem ntawm kev ruaj khov, kev ntseeg siab, kev ua kom me me, thiab tus nqi hauv SiC systems.
Cov capacitors zaj duab xis ua tiav ze li ntawm 90% nkag mus rau hauv cov ntawv thov tsav tsheb tseem ceeb. Vim li cas SiC thiab IGBT thiaj xav tau lawv?
Nyob rau xyoo tas los no, nrog rau kev txhim kho sai ntawm cov lag luam tshiab xws li kev khaws cia hluav taws xob, kev them nqi, thiab cov tsheb fais fab (EVs), qhov kev thov rau DC-Link capacitors tau nce ntxiv sai. Hais yooj yim, DC-Link capacitors ua haujlwm ua buffers hauv circuits, nqus cov hluav taws xob siab los ntawm qhov kawg ntawm lub tsheb npav thiab ua kom lub tsheb npav hluav taws xob du, yog li tiv thaiv IGBT thiab SiC MOSFET switches los ntawm cov hluav taws xob siab thiab kev cuam tshuam ntawm lub zog hloov pauv.
Feem ntau, cov txhuas electrolytic capacitors yog siv rau hauv DC kev txhawb nqa daim ntawv thov. Txawm li cas los xij, nrog rau lub zog hluav taws xob ntawm cov tsheb fais fab tshiab nce ntxiv ntawm 400V mus rau 800V thiab cov tshuab photovoltaic txav mus rau 1500V thiab txawm tias 2000V, qhov kev thov rau cov zaj duab xis capacitors tab tom nce ntxiv ntau heev.
Cov ntaub ntawv qhia tau tias xyoo 2022, lub peev xwm teeb tsa ntawm cov inverters tsav hluav taws xob raws li DC-Link zaj duab xis capacitors tau txog 5.1117 lab units, suav txog 88.7% ntawm tag nrho cov peev xwm teeb tsa ntawm kev tswj hwm hluav taws xob. Cov tuam txhab tswj hwm hluav taws xob ua thawj coj xws li Fudi Power, Tesla, Inovance Technology, Nidec, thiab Wiran Power txhua tus siv DC-Link zaj duab xis capacitors hauv lawv cov inverters tsav, nrog rau qhov sib piv ntawm lub peev xwm teeb tsa txog li 82.9%. Qhov no qhia tau hais tias cov zaj duab xis capacitors tau hloov cov electrolytic capacitors ua lub hauv paus hauv kev lag luam tsav hluav taws xob.
Qhov no yog vim tias qhov siab tshaj plaws ntawm cov hluav taws xob tiv taus ntawm cov txhuas electrolytic capacitors yog kwv yees li 630V. Hauv cov ntawv thov hluav taws xob siab thiab cov hwj chim siab tshaj 700V, ntau lub electrolytic capacitors yuav tsum tau txuas nrog ua ke thiab sib luag kom tau raws li qhov yuav tsum tau siv, uas coj kev poob hluav taws xob ntxiv, BOM tus nqi, thiab teeb meem kev ntseeg siab.
Ib daim ntawv tshawb fawb los ntawm University of Malaysia qhia tias cov electrolytic capacitors feem ntau yog siv rau hauv DC txuas ntawm silicon IGBT ib nrab-bridge inverters, tab sis voltage surges tuaj yeem tshwm sim vim yog qhov sib npaug series resistance (ESR) siab ntawm electrolytic capacitors. Piv rau silicon-based IGBT cov kev daws teeb meem, SiC MOSFETs muaj cov zaus hloov pauv siab dua, ua rau muaj qhov voltage surge amplitudes siab dua hauv DC txuas ntawm ib nrab-bridge inverters. Qhov no tuaj yeem ua rau lub cuab yeej ua haujlwm poob qis lossis txawm tias puas tsuaj, vim tias qhov zaus resonant ntawm electrolytic capacitors tsuas yog 4kHz, tsis txaus los nqus cov tam sim no ripple ntawm SiC MOSFET inverters.
Yog li ntawd, hauv DC daim ntawv thov nrog cov kev xav tau kev ntseeg siab dua, xws li cov inverters tsav hluav taws xob thiab photovoltaic inverters, cov capacitors zaj duab xis feem ntau raug xaiv. Piv rau cov capacitors electrolytic txhuas, lawv cov txiaj ntsig kev ua tau zoo suav nrog kev tiv thaiv hluav taws xob siab dua, ESR qis dua, tsis muaj polarity, kev ua haujlwm ruaj khov dua, thiab lub neej ntev dua, ua rau muaj kev tsim qauv txhim khu kev qha dua nrog kev tiv thaiv ripple muaj zog dua.
Tsis tas li ntawd xwb, kev siv cov zaj duab xis capacitors hauv lub kaw lus tuaj yeem siv cov txiaj ntsig siab, qis-poob ntawm SiC MOSFETs, txo qhov loj thiab qhov hnyav ntawm cov khoom passive (inductors, transformers, capacitors) hauv lub kaw lus. Raws li Wolfspeed kev tshawb fawb, 10kW silicon-based IGBT inverter xav tau 22 aluminium electrolytic capacitors, thaum 40kW SiC inverter tsuas xav tau 8 zaj duab xis capacitors, txo qhov chaw PCB zoo heev.
YMIN Tshaj Tawm Cov Capacitors Zaj Duab Xis Tshiab nrog Plaub Qhov Zoo Tseem Ceeb los Txhawb Kev Lag Luam Zog Tshiab
Txhawm rau kom tau raws li qhov xav tau ntawm kev ua lag luam sai, YMIN nyuam qhuav tsim cov MDP thiab MDR series ntawm DC txhawb nqa zaj duab xis capacitors. Siv cov txheej txheem tsim khoom siab heev thiab cov ntaub ntawv zoo, cov capacitors no sib xws nrog cov kev xav tau ua haujlwm ntawm SiC MOSFETs thiab silicon-based IGBTs los ntawm cov thawj coj thoob ntiaj teb ntawm lub zog semiconductor xws li Infineon.
YMIN's MDP thiab MDR series zaj duab xis capacitors muaj ntau yam ntxwv tseem ceeb: qis dua qhov sib npaug series tsis kam (ESR), siab dua rated voltage, qis dua to tam sim no, thiab siab dua kub stability.
Ua ntej, YMIN cov zaj duab xis capacitors muaj tus qauv tsim ESR qis, ua kom txo tau qhov kev ntxhov siab ntawm lub zog hluav taws xob thaum lub sijhawm hloov ntawm SiC MOSFETs thiab silicon-based IGBTs, yog li txo qhov kev poob ntawm capacitor thiab txhim kho kev ua haujlwm ntawm lub kaw lus tag nrho. Tsis tas li ntawd, cov capacitors no muaj qhov ntsuas hluav taws xob siab dua, muaj peev xwm tiv taus cov xwm txheej hluav taws xob siab dua thiab ua kom lub kaw lus ua haujlwm ruaj khov.
Cov MDP thiab MDR series ntawm YMIN zaj duab xis capacitors muaj capacitance ntau yam ntawm 5uF-150uF thiab 50uF-3000uF, thiab voltage ntau yam ntawm 350V-1500V thiab 350V-2200V, raws li.
Qhov thib ob, YMIN cov zaj duab xis capacitors tshiab tshaj plaws muaj qhov xau tsawg dua thiab qhov kub thiab txias ruaj khov dua. Hauv cov xwm txheej ntawm cov tsheb fais fab tswj hwm hluav taws xob, uas feem ntau muaj zog siab, qhov cua sov tsim tawm tuaj yeem cuam tshuam rau lub neej thiab kev ntseeg siab ntawm cov zaj duab xis capacitors. Txhawm rau daws qhov teeb meem no, MDP thiab MDR series los ntawm YMIN suav nrog cov khoom siv zoo thiab cov txheej txheem tsim khoom siab heev los tsim cov qauv thermal zoo dua rau cov capacitors. Qhov no ua kom muaj kev ua haujlwm ruaj khov txawm tias nyob rau hauv qhov chaw kub siab, tiv thaiv kev puas tsuaj ntawm capacitor lossis kev ua tsis tiav vim kub nce. Ntxiv mus, cov capacitors no muaj lub neej ntev dua, muab kev txhawb nqa zoo dua rau cov kab ke hluav taws xob fais fab.
Qhov thib peb, cov MDP thiab MDR series capacitors los ntawm YMIN muaj qhov me me dua thiab muaj zog dua. Piv txwv li, hauv 800V lub tshuab tsav hluav taws xob, qhov sib txawv yog siv cov khoom siv SiC los txo qhov loj ntawm cov capacitors thiab lwm yam khoom siv passive, yog li txhawb kev ua kom me me ntawm cov kev tswj hwm hluav taws xob. YMIN tau siv cov thev naus laus zis tsim cov yeeb yaj kiab tshiab, uas tsis yog tsuas yog ua rau kev sib koom ua ke thiab kev ua haujlwm zoo xwb tab sis kuj txo qhov loj me thiab qhov hnyav ntawm lub kaw lus, txhim kho kev yooj yim nqa thiab kev ywj pheej ntawm cov khoom siv.
Zuag qhia tag nrho, YMIN's DC-Link film capacitor series muaj kev txhim kho 30% hauv dv/dt withstand capacity thiab nce 30% ntawm lub neej piv rau lwm cov film capacitors hauv khw. Qhov no tsis yog tsuas yog muab kev ntseeg siab zoo dua rau SiC/IGBT circuits xwb tab sis kuj muab kev siv nyiaj zoo dua, kov yeej cov teeb meem nqi hauv kev siv dav dav ntawm cov film capacitors.
Ua ib tug thawj coj hauv kev lag luam, YMIN tau koom nrog tob hauv kev lag luam capacitor tau ntau tshaj 20 xyoo. Nws cov capacitors high-voltage tau siv ruaj khov hauv cov teb siab xws li onboard OBC, cov charger piles tshiab, photovoltaic inverters, thiab cov neeg hlau lag luam tau ntau xyoo. Cov khoom lag luam capacitor zaj duab xis tshiab no daws ntau yam teeb meem hauv kev tswj cov txheej txheem tsim cov capacitor zaj duab xis thiab cov khoom siv, tau ua tiav daim ntawv pov thawj kev ntseeg siab nrog cov tuam txhab lag luam thoob ntiaj teb, thiab ua tiav daim ntawv thov loj, ua pov thawj qhov kev ntseeg siab ntawm cov khoom rau cov neeg siv khoom loj dua. Yav tom ntej, YMIN yuav siv nws cov kev sib sau ua ke mus sij hawm ntev los txhawb kev txhim kho sai ntawm kev lag luam zog tshiab nrog cov khoom lag luam capacitor kev ntseeg siab siab thiab pheej yig.
Yog xav paub ntxiv, thov mus saibwww.ymin.cn.
Lub sijhawm tshaj tawm: Lub Xya Hli-07-2024