Kavalo wabwino amafunikira chishalo chabwino! Kuti muthe kupititsa patsogolo ubwino wa zipangizo za SiC, m'pofunikanso kugwirizanitsa makina ozungulira ndi ma capacitor oyenera. Kuchokera pakuwongolera kwakukulu pamagalimoto amagetsi kupita kuzinthu zatsopano zamphamvu monga ma photovoltaic inverters, ma capacitor opanga mafilimu pang'onopang'ono akukhala odziwika bwino, ndipo msika umafunikira mwachangu zinthu zotsika mtengo.
Posachedwa, Shanghai Yongming Electronic Co., Ltd. idakhazikitsa ma capacitor othandizira mafilimu a DC, omwe ali ndi zabwino zinayi zomwe zimawapangitsa kukhala oyenera ma IGBT a m'badwo wachisanu ndi chiwiri wa Infineon. Amathandizanso kuthana ndi zovuta za kukhazikika, kudalirika, miniaturization, ndi mtengo mumayendedwe a SiC.
Ma capacitor amakanema amafikira pafupifupi 90% kulowa mumayendedwe akuluakulu. Chifukwa chiyani SiC ndi IGBT amazifuna?
M'zaka zaposachedwa, ndikukula mwachangu kwa mafakitale amagetsi atsopano monga kusungirako mphamvu, kulipiritsa, ndi magalimoto amagetsi (EVs), kufunikira kwa ma capacitor a DC-Link kwakula kwambiri. Mwachidule, ma capacitor a DC-Link amakhala ngati ma buffer m'mabwalo, kutengera mafunde apamwamba kuchokera kumapeto kwa basi ndikuwongolera ma voltages a basi, motero amateteza masinthidwe a IGBT ndi SiC MOSFET ku mafunde apamwamba komanso kukhudzidwa kwamagetsi kwakanthawi.
Nthawi zambiri, ma aluminium electrolytic capacitors amagwiritsidwa ntchito pothandizira DC. Komabe, ndi magetsi a mabasi a magalimoto atsopano omwe akukwera kuchokera ku 400V kufika ku 800V ndi makina a photovoltaic akupita ku 1500V komanso ngakhale 2000V, kufunikira kwa ma capacitor amafilimu akukwera kwambiri.
Deta ikuwonetsa kuti mu 2022, mphamvu yoyika ma inverters amagetsi otengera ma capacitor a DC-Link adafika mayunitsi miliyoni 5.1117, omwe amawerengera 88.7% ya mphamvu zonse zomwe zidayikidwa pamagetsi. Makampani otsogola owongolera zamagetsi monga Fudi Power, Tesla, Inovance Technology, Nidec, ndi Wiran Power onse amagwiritsa ntchito ma capacitor amafilimu a DC-Link m'mainverters awo oyendetsa, okhala ndi chiŵerengero chophatikizika cha mphamvu mpaka 82.9%. Izi zikuwonetsa kuti ma capacitor amakanema alowa m'malo mwa ma electrolytic capacitor ngati omwe ali pamsika wamagetsi oyendetsa magetsi.
Ichi ndi chifukwa pazipita voteji kukana zotayidwa electrolytic capacitors pafupifupi 630V. Pamagetsi okwera kwambiri komanso kugwiritsa ntchito mphamvu zambiri pamwamba pa 700V, ma capacitor angapo a electrolytic amafunika kulumikizidwa motsatizana ndikufanana kuti akwaniritse zofunikira zogwiritsira ntchito, zomwe zimabweretsa kutayika kwa mphamvu zowonjezera, mtengo wa BOM, ndi nkhani zodalirika.
Pepala lofufuza lochokera ku Yunivesite ya Malaysia likuwonetsa kuti ma electrolytic capacitor amagwiritsidwa ntchito kwambiri pa ulalo wa DC wa silicon IGBT theka la mlatho inverters, koma ma voltage amatha kuchitika chifukwa cha kukana kwakukulu kofananira (ESR) kwa ma electrolytic capacitors. Poyerekeza ndi mayankho a silicon-based IGBT, ma SiC MOSFET ali ndi ma frequency osinthika kwambiri, zomwe zimapangitsa kuti ma voltage akukwera kwambiri mu ulalo wa DC wa ma inverters a theka la mlatho. Izi zitha kupangitsa kuti chipangizocho chiwonongeke kapena kuwonongeka, chifukwa ma frequency a resonant a electrolytic capacitors ndi 4kHz okha, osakwanira kuyamwa ma inverters a SiC MOSFET.
Chifukwa chake, m'mapulogalamu a DC omwe ali ndi zofunikira zodalirika kwambiri, monga ma inverters amagetsi amagetsi ndi ma photovoltaic inverters, ma capacitor amafilimu amasankhidwa. Poyerekeza ndi ma aluminiyamu electrolytic capacitors, maubwino awo amaphatikiza kukana kwamagetsi apamwamba, kutsika kwa ESR, kusakhala ndi polarity, magwiridwe antchito okhazikika, komanso moyo wautali, zomwe zimapangitsa kuti dongosolo lodalirika likhale lolimba komanso kukana kwamphamvu.
Kuphatikiza apo, kugwiritsa ntchito ma capacitor amakanema mu dongosololi kumatha kukulitsa mobwerezabwereza zabwino zambiri, zotsika zotsika kwambiri za SiC MOSFETs, kuchepetsa kwambiri kukula ndi kulemera kwa magawo osagwira ntchito (ma inductors, transformers, capacitors) mu dongosolo. Malinga ndi kafukufuku wa Wolfspeed, 10kW silicon-based IGBT inverter imafuna 22 aluminium electrolytic capacitors, pamene 40kW SiC inverter imangofunika ma capacitor a 8 mafilimu, kuchepetsa kwambiri dera la PCB.
YMIN Yakhazikitsa Ma Capacitor Atsopano Amakanema Omwe Ali ndi Zopindulitsa Zinayi Zazikulu Zothandizira Gulu Latsopano Lamagetsi
Pofuna kuthana ndi zofuna zachangu pamsika, YMIN yakhazikitsa posachedwa MDP ndi MDR mndandanda wa DC othandizira mafilimu capacitors. Pogwiritsa ntchito njira zopangira zida zapamwamba komanso zida zapamwamba, ma capacitor awa amagwirizana bwino ndi zofunikira zogwirira ntchito za SiC MOSFETs ndi ma IGBT a silicon ochokera kwa atsogoleri apadziko lonse lapansi a semiconductor monga Infineon.
YMIN's MDP ndi MDR mndandanda wamakanema capacitors ali ndi zinthu zingapo zodziwika: kutsika kofanana ndi kukana (ESR), ma voliyumu apamwamba kwambiri, kutsika kwaposachedwa, komanso kukhazikika kwa kutentha.
Choyamba, ma capacitor amakanema a YMIN amakhala ndi mapangidwe otsika a ESR, amachepetsa kupsinjika kwamagetsi panthawi yakusintha kwa ma SiC MOSFET ndi ma IGBT opangidwa ndi silicon, potero amachepetsa kutayika kwa capacitor ndikuwongolera magwiridwe antchito onse. Kuphatikiza apo, ma capacitor awa ali ndi ma voliyumu apamwamba kwambiri, omwe amatha kupirira mikhalidwe yayikulu yamagetsi ndikuwonetsetsa kuti dongosolo likugwira ntchito mokhazikika.
Mitundu ya MDP ndi MDR ya YMIN film capacitors imapereka ma capacitance ranges a 5uF-150uF ndi 50uF-3000uF, ndi ma voltage osiyanasiyana a 350V-1500V ndi 350V-2200V, motsatana.
Kachiwiri, ma capacitor aposachedwa kwambiri a YMIN ali ndi kutsika kocheperako komanso kutentha kwapamwamba. Pankhani yamagetsi amagetsi amagetsi amagetsi, omwe nthawi zambiri amakhala ndi mphamvu zambiri, kutulutsa kutentha kumatha kukhudza kwambiri moyo komanso kudalirika kwa ma capacitor amafilimu. Kuti athetse izi, mndandanda wa MDP ndi MDR wochokera ku YMIN umaphatikizapo zipangizo zapamwamba kwambiri ndi njira zopangira zopangira kupanga mapangidwe abwino a kutentha kwa ma capacitors. Izi zimatsimikizira kugwira ntchito mokhazikika ngakhale m'madera otentha kwambiri, kuteteza kuwonongeka kwa mtengo wa capacitor kapena kulephera chifukwa cha kukwera kwa kutentha. Kuphatikiza apo, ma capacitor awa amakhala ndi moyo wautali, kupereka chithandizo chodalirika chamagetsi amagetsi.
Chachitatu, ma capacitor a MDP ndi MDR ochokera ku YMIN amakhala ndi kukula kochepa komanso mphamvu zambiri. Mwachitsanzo, mu makina oyendetsa magetsi a 800V, zomwe zimachitika ndikugwiritsa ntchito zipangizo za SiC kuti muchepetse kukula kwa ma capacitor ndi zigawo zina zopanda pake, motero kulimbikitsa miniaturization ya magetsi. YMIN yagwiritsa ntchito luso lamakono lopanga mafilimu, zomwe sizimangowonjezera kusakanikirana kwadongosolo lonse komanso kugwira ntchito bwino komanso kuchepetsa kukula kwa dongosolo ndi kulemera kwake, kumapangitsa kuti zipangizo zitheke komanso kusinthasintha.
Ponseponse, YMIN's DC-Link film capacitor series ikupereka kuwongolera kwa 30% kwa dv/dt kupirira komanso kuwonjezereka kwa 30% kwa moyo wawo poyerekeza ndi ma capacitor ena apamsika. Izi sizimangopereka kudalirika kwabwino kwa mabwalo a SiC / IGBT komanso zimaperekanso mtengo wabwino, kugonjetsa zopinga zamtengo wapatali pakugwiritsa ntchito kwambiri mafilimu opangira mafilimu.
Monga mpainiya wamakampani, YMIN wakhala akuchita nawo gawo la capacitor kwa zaka zopitilira 20. Ma capacitor ake okwera kwambiri akhala akugwiritsidwa ntchito mokhazikika m'magawo apamwamba kwambiri monga onboard OBC, milu yatsopano yopangira mphamvu, ma inverters a photovoltaic, ndi maloboti amakampani kwazaka zambiri. Mbadwo watsopanowu wa zinthu zopangira filimu za capacitor zimathetsa zovuta zosiyanasiyana pakuwongolera njira zopangira ma capacitor ndi zida, wamaliza chiphaso chodalirika ndi mabizinesi otsogola padziko lonse lapansi, ndikukwaniritsa ntchito yayikulu, kutsimikizira kudalirika kwa mankhwalawa kwa makasitomala akuluakulu. M'tsogolomu, YMIN idzagwiritsa ntchito luso la nthawi yayitali kuti lithandizire chitukuko chofulumira cha makampani opanga mphamvu zatsopano ndi zinthu zodalirika komanso zotsika mtengo za capacitor.
Kuti mudziwe zambiri, chonde pitaniwww.ymin.cn.
Nthawi yotumiza: Jul-07-2024