Q1: Dab tsi yog lub luag haujlwm tseem ceeb ntawm zaj duab xis capacitors hauv hluav taws xob architecture ntawm lub zog tshiab?
A: Raws li DC-link capacitors, lawv lub luag haujlwm tseem ceeb yog txhawm rau nqus cov tsheb npav siab ceev, kev hloov pauv hloov pauv, thiab tiv thaiv IGBT / SiC MOSFET hloov khoom siv los ntawm kev hloov pauv tam sim no thiab tam sim no surges.
Q2: Vim li cas 800V platform xav tau kev ua tau zoo dua cov yeeb yaj kiab capacitors?
A: Raws li lub tsheb npav voltage nce los ntawm 400V mus rau 800V, qhov yuav tsum tau muaj rau capacitor tiv taus voltage, ripple tam sim no nqus efficiency, thiab kub dissipation nce ho. Qhov qis ESR thiab siab tiv taus cov yam ntxwv ntawm cov yeeb yaj kiab capacitors yog qhov tsim nyog rau qhov chaw muaj hluav taws xob ntau.
Q3: Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm zaj duab xis capacitors tshaj electrolytic capacitors hauv lub zog tshiab?
A: Lawv muaj kev tiv thaiv hluav taws xob ntau dua, qis ESR, tsis yog-polar, thiab muaj lub neej ntev dua. Lawv cov zaus resonant ntau dua li ntawm electrolytic capacitors, sib piv cov kev hloov pauv siab ntawm SiC MOSFETs.
Q4: Vim li cas lwm cov capacitors yooj yim ua rau muaj hluav taws xob hauv SiC inverters?
A: Siab ESR thiab qis resonant zaus tiv thaiv lawv los ntawm kev nqus dej ntau zaus tam sim no. Thaum SiC hloov ntawm qhov nrawm dua, qhov hluav taws xob nce ntxiv, uas ua rau lub cuab yeej puas.
Q5: Cas zaj duab xis capacitors pab txo qhov loj ntawm hluav taws xob tsav tshuab?
A: Hauv Wolfspeed cov ntaub ntawv kawm, 40kW SiC inverter yuav tsum tsuas yog yim zaj duab xis capacitors (piv rau 22 electrolytic capacitors rau silicon-based IGBTs), txo qis PCB hneev taw thiab qhov hnyav.
Q6: Dab tsi tshiab yuav tsum tau hloov siab zaus qhov chaw ntawm DC-Link capacitors?
A: Tsawg ESR yuav tsum tau txo qis kev hloov pauv, ntau dua resonant zaus yuav tsum tau ua kom muaj zog ntau zaus ripple, thiab zoo dua dv / dt muaj peev xwm tiv taus.
Q7: Lub neej ntev kev ntseeg ntawm zaj duab xis capacitors ntsuas li cas?
A: Nws nyob ntawm qhov thermal stability ntawm cov khoom (xws li, polypropylene zaj duab xis) thiab cov cua kub dissipation tsim. Piv txwv li, YMIN MDP series txhim kho lub neej ntawm qhov kub thiab txias los ntawm kev ua kom zoo dua cov qauv cua sov.
Q8: ESR ntawm zaj duab xis capacitors cuam tshuam li cas rau kev ua haujlwm zoo?
A: Tsawg ESR txo lub zog poob thaum hloov pauv, txo qis kev ntxhov siab, thiab ncaj qha txhim kho inverter efficiency.
Q9: Vim li cas zaj duab xis capacitors zoo dua rau qhov chaw muaj kev vibration automotive?
A: Lawv cov qauv ruaj khov, tsis muaj kua electrolyte, muaj kev vibration zoo dua piv rau electrolytic capacitors, thiab lawv cov polarity-free installation ua rau lawv yooj yim dua.
Q10: Dab tsi yog qhov kev nkag mus tam sim no ntawm zaj duab xis capacitors hauv hluav taws xob tsav inverter?
A: Nyob rau hauv 2022, lub peev xwm ntsia tau rau ntawm cov zaj duab xis capacitor-raws li inverters mus txog 5.1117 lab units, suav txog 88.7% ntawm tag nrho cov teeb tsa muaj peev xwm ntawm kev tswj hluav taws xob. Cov tuam txhab ua lag luam xws li Tesla thiab Nidec suav txog 82.9%.
Q11: Vim li cas zaj duab xis capacitors tseem siv nyob rau hauv photovoltaic inverters?
A: Cov kev xav tau rau kev ntseeg siab thiab lub neej ntev zoo ib yam li cov hauv kev siv tsheb, thiab lawv kuj yuav tsum tau tiv taus qhov kub thiab txias hloov pauv.
Q12: MDP series daws teeb meem kev ntxhov siab li cas hauv SiC circuits?
A: Nws tus qauv ESR qis txo qis kev hloov pauv, txhim kho dv / dt tiv taus los ntawm 30%, thiab txo qhov kev pheej hmoo ntawm kev tawg.
Q13: Cov koob no ua haujlwm li cas ntawm qhov kub thiab txias?
A: Siv cov ntaub ntawv kub-kub ruaj khov thiab cov qauv hluav taws xob muaj txiaj ntsig zoo, peb ua kom muaj peev xwm lwj ntawm tsawg dua 5% ntawm 125 ° C.
Q14: Yuav ua li cas MDP series ua tiav miniaturization?
A: Lub tshuab ua yeeb yaj kiab tshiab ua rau muaj peev xwm ntau ntxiv rau kev lag luam nruab nrab, ua kom muaj hluav taws xob hluav taws xob tsim qauv.
Q15: Tus nqi pib ntawm zaj duab xis capacitors yog siab dua li ntawm electrolytic capacitors. Lawv puas muab tus nqi kom zoo dua ntawm lub neej?
A: Yog. Zaj duab xis capacitors tuaj yeem mus txog lub neej ntawm lub tsheb yam tsis muaj kev hloov pauv, thaum electrolytic capacitors xav tau kev saib xyuas tsis tu ncua. Nyob rau lub sijhawm ntev, zaj duab xis capacitors muab cov nqi qis dua.
Post lub sij hawm: Oct-14-2025