Ma capacitor amakanema amathandiza ukadaulo wa SiC ndi IGBT kupita patsogolo mwachangu: mayankho a YMIN capacitor application

M'zaka zaposachedwa, kukula kwamphamvu kwa mafakitale amagetsi atsopano monga photovoltaic storage ndi magalimoto amagetsi (EVs) kwadzetsa kufunikira kwa ma capacitor a DC-Link. Mwachidule, ma capacitor a DC-Link amagwira ntchito yofunika kwambiri pozungulira. Amatha kuyamwa mafunde othamanga kwambiri kumapeto kwa basi ndikuwongolera mphamvu ya basi, kuwonetsetsa kuti masiwichi a IGBT ndi SiC MOSFET amatetezedwa ku zotsatira zoyipa za mafunde apamwamba komanso ma voltages osakhalitsa pakagwira ntchito.

Pamene magetsi amabasi amagalimoto atsopano amagetsi akuwonjezeka kuchokera ku 400V kufika ku 800V, kufunikira kwa ma capacitor a mafilimu kwawonjezeka kwambiri. Malinga ndi data, mphamvu yoyika ya ma inverters amagetsi otengera DC-Link thin-film capacitors idafika ma seti miliyoni 5.1117 miliyoni mu 2022, zomwe zimawerengera 88.7% ya mphamvu yoyika magetsi. Ma inverter amakampani ambiri otsogola amagetsi monga Tesla ndi Nidec onse amagwiritsa ntchito ma capacitor amafilimu a DC-Link, omwe amakhala ndi 82.9% yazomwe adayikapo ndipo akhala chisankho chachikulu pamsika wamagetsi oyendetsa magetsi.

Mapepala ofufuza akuwonetsa kuti mu ma inverters a silicon IGBT theka la mlatho, ma capacitor achikhalidwe a electrolytic amagwiritsidwa ntchito pa ulalo wa DC, koma ma voltage amachitika chifukwa cha ESR yayikulu yama electrolytic capacitors. Poyerekeza ndi mayankho a silicon-based IGBT, ma SiC MOSFET amakhala ndi ma frequency apamwamba kwambiri, kotero kukwera kwamphamvu kwamagetsi mu ulalo wa DC wa inverter ya theka la mlatho ndikokwera, zomwe zingayambitse kuwonongeka kwa chipangizocho kapena kuwonongeka, komanso ma frequency a electrolytic capacitors ndi 4kHz okha, omwe siwokwanira kuyamwa ma MOS ripples a SiverC.

Chifukwa chake, mu ntchito za DC monga ma inverters oyendetsa magetsi ndi ma photovoltaic inverters okhala ndi zofunikira zodalirika kwambiri,mafilimu capacitorsnthawi zambiri amasankhidwa. Poyerekeza ndi aluminiyamu electrolytic capacitors, ntchito ubwino wawo ndi apamwamba voteji kukana, m'munsi ESR, non-polarity, ntchito khola, ndi moyo wautali, motero kukwaniritsa wamphamvu ripple kukana ndi odalirika dongosolo dongosolo.

Makina omwe amagwiritsa ntchito ma capacitor ocheperako amatha kutenga mwayi pakutsika kwafupipafupi komanso kutsika kochepa kwa ma SiC MOSFETs ndikuchepetsa kukula ndi kulemera kwa zigawo zongokhala. Kafukufuku wa Wolfspeed akuwonetsa kuti 10kW silicon yochokera ku IGBT inverter imafuna 22 aluminium electrolytic capacitors, pamene 40kW SiC inverter imangofunika 8 mafilimu ochepa kwambiri, ndipo dera la PCB limachepetsanso kwambiri.

Poyankha zofuna za msika, YMIN Electronics idayambitsaMDP mndandanda wa mafilimu capacitors, yomwe imagwiritsa ntchito ukadaulo wapamwamba komanso zida zapamwamba kwambiri kuti zigwirizane ndi SiC MOSFET ndi silicon-based IGBT. Ma capacitors a MDP ali ndi ESR yotsika, magetsi olimba kwambiri, kutayikira kochepa komanso kukhazikika kwa kutentha.

Ubwino wa zinthu za YMIN Electronics 'filimu capacitor:

Mapangidwe a capacitor a YMIN Electronics amatengera lingaliro lotsika la ESR kuti achepetse kupsinjika kwamagetsi ndi kutayika kwa mphamvu pakusintha ndikuwongolera mphamvu zamagetsi. Imakhala ndi ma voliyumu apamwamba kwambiri, imagwirizana ndi malo okwera kwambiri, ndikuwonetsetsa kukhazikika kwadongosolo.

Ma capacitor amtundu wa MDP ali ndi kuchuluka kwa 1uF-500uF ndi mtundu wa voteji wa 500V mpaka 1500V. Iwo ali otsika kutayikira panopa ndi apamwamba kutentha bata. Kupyolera mu zipangizo zamtengo wapatali ndi njira zapamwamba, njira yabwino yochepetsera kutentha imapangidwa kuti iwonetsetse kugwira ntchito mokhazikika pa kutentha kwakukulu, kuwonjezera moyo wautumiki, ndi kupereka chithandizo chodalirika chamagetsi amagetsi amagetsi. Pa nthawi yomweyo, aMDP mndandanda capacitorsndizophatikizika kukula, kuchulukitsitsa kwamphamvu, ndipo amagwiritsa ntchito njira zatsopano zopangira mafilimu opyapyala kuti apititse patsogolo kuphatikizana kwamakina, kuchepetsa kukula ndi kulemera, ndikuwonjezera kusuntha kwa zida ndi kusinthasintha.

YMIN Electronics DC-Link film capacitor series ili ndi kusintha kwa 30% mu kulekerera kwa dv / dt ndi kuwonjezeka kwa 30% pa moyo wautumiki, zomwe zimapangitsa kudalirika kwa mabwalo a SiC / IGBT, kumabweretsa ndalama zabwino, ndikuthetsa vuto la mtengo.