Q1: Kodi gawo lalikulu la ma capacitor amafilimu pamapangidwe amagetsi amagetsi atsopano ndi chiyani?
A: Monga ma DC-link capacitor, ntchito yawo yayikulu ndikuyamwa mafunde apamwamba a mabasi, kusinthasintha kwamagetsi osalala, ndikuteteza zida zosinthira za IGBT/SiC MOSFET kumagetsi osakhalitsa komanso mafunde apano.
Q2: Chifukwa chiyani nsanja ya 800V imafuna ma capacitor apamwamba kwambiri?
A: Pamene mphamvu ya basi ikukwera kuchokera ku 400V kufika ku 800V, zofunikira za capacitor kupirira voteji, mayamwidwe amakono, komanso kutentha kwa kutentha kumawonjezeka kwambiri. Mawonekedwe a ESR otsika komanso kupirira kwamphamvu kwamagetsi a ma capacitor amakanema ndi abwino kwambiri pamapangidwe amagetsi apamwamba.
Q3: Ndi maubwino otani a ma capacitor a kanema pamagetsi opangira ma electrolytic m'magalimoto atsopano amphamvu?
A: Amapereka mphamvu yopirira kwambiri, ESR yotsika, si polar, ndipo amakhala ndi moyo wautali. Ma frequency awo omveka ndi okwera kwambiri kuposa ma electrolytic capacitor, kufananiza ndi zofunikira zosinthira pafupipafupi za SiC MOSFETs.
Q4: Chifukwa chiyani ma capacitor ena amachititsa kuti ma voltage achuluke mosavuta mu SiC inverters?
A: ESR yokwera komanso mafupipafupi otsika amawalepheretsa kuti azitha kuyamwa pafupipafupi pafupipafupi. SiC ikasintha mwachangu, kuchuluka kwamagetsi kumawonjezeka, zomwe zitha kuwononga chipangizocho.
Q5: Kodi ma capacitor amafilimu amathandizira bwanji kuchepetsa kukula kwa makina oyendetsa magetsi?
A: Mu phunziro la Wolfspeed, 40kW SiC inverter inverter inafuna ma capacitor asanu ndi atatu okha (poyerekeza ndi 22 electrolytic capacitor for silicon-based IGBTs), kuchepetsa kwambiri mapazi a PCB ndi kulemera kwake.
Q6: Ndi zofunika ziti zatsopano zomwe ma frequency apamwamba amayika pa DC-Link capacitors?
A: ESR yotsika imafunikanso kuchepetsa kutayika kwa kusintha, ma frequency apamwamba a resonant amafunikira kupondereza ma frequency apamwamba, komanso kupirira kwabwino kwa dv/dt kumafunikanso.
Q7: Kodi kudalirika kwa moyo wa ma capacitor a kanema kumayesedwa bwanji?
A: Zimatengera kukhazikika kwa kutentha kwazinthu (mwachitsanzo, filimu ya polypropylene) ndi mapangidwe a kutentha kwa kutentha. Mwachitsanzo, mndandanda wa YMIN MDP umapangitsa kuti moyo ukhale wabwino pa kutentha kwakukulu pokonza njira yochepetsera kutentha.
Q8: Kodi ESR ya ma capacitor amafilimu imakhudza bwanji magwiridwe antchito?
A: ESR yotsika imachepetsa kutayika kwa mphamvu panthawi yosinthira, imachepetsa kupsinjika kwamagetsi, ndikuwongolera mwachindunji inverter.
Q9: Chifukwa chiyani ma capacitor amakanema ali oyenera kwambiri pamagalimoto othamanga kwambiri?
A: Kapangidwe kawo kolimba, kopanda ma electrolyte amadzimadzi, kumapereka kukana kwamphamvu kwa vibration poyerekeza ndi ma electrolytic capacitors, ndipo kuyika kwawo kopanda polarity kumawapangitsa kukhala osinthika.
Q10: Kodi kuchuluka kwaposachedwa kwa ma capacitor amafilimu mumagetsi oyendetsa magetsi ndi chiyani?
A: Mu 2022, mphamvu yoyikiratu ya ma inverters otengera mafilimu adafikira mayunitsi 5.1117 miliyoni, omwe amawerengera 88.7% ya mphamvu zonse zomwe zidayikidwa zamakina owongolera magetsi. Makampani otsogola monga Tesla ndi Nidec adapanga 82.9%.
Q11: Chifukwa chiyani ma capacitor amafilimu amagwiritsidwanso ntchito mu ma inverters a photovoltaic?
A: Zofunikira pa kudalirika kwakukulu ndi moyo wautali ndizofanana ndi zomwe zili pamagalimoto, ndipo zimafunikanso kupirira kusinthasintha kwa kutentha kwakunja.
Q12: Kodi mndandanda wa MDP umathana bwanji ndi zovuta zamagetsi m'mabwalo a SiC?
A: Mapangidwe ake otsika a ESR amachepetsa kusintha kwapamwamba, kumapangitsa kuti dv / dt ikhale yolimba ndi 30%, ndipo imachepetsa chiopsezo cha kuwonongeka kwa magetsi.
Q13: Kodi mndandandawu umachita bwanji kutentha kwambiri?
A: Pogwiritsa ntchito zipangizo zotentha kwambiri komanso zowonongeka zowonongeka, timaonetsetsa kuti kuwonongeka kwa mphamvu kumakhala kosakwana 5% pa 125 ° C.
Q14: Kodi mndandanda wa MDP umakwaniritsa bwanji miniaturization?
A: Ukadaulo waukadaulo wamakanema opyapyala umawonjezera kuchuluka kwa voliyumu iliyonse, zomwe zimapangitsa kuti mphamvu zambiri zizipitilira kuchuluka kwamakampani, zomwe zimapangitsa kuti pakhale ma compact electric drive design.
Q15: Mtengo woyamba wa ma capacitor a filimu ndi wapamwamba kuposa wa electrolytic capacitors. Kodi amapereka phindu lamtengo wapatali kuposa moyo?
A: Inde. Ma capacitor a kanema amatha kupitilira moyo wagalimoto popanda kusinthidwa, pomwe ma electrolytic capacitors amafunikira kukonzedwa pafupipafupi. M'kupita kwanthawi, ma capacitor amafilimu amapereka ndalama zotsika mtengo.
Nthawi yotumiza: Oct-14-2025