Q1: Karolo ea mantlha ea li-capacitor tsa lifilimi ke efe mohahong oa motlakase oa likoloi tse ncha tsa matla?
A: Joaloka li-capacitor tsa DC-link, mosebetsi oa tsona oa mantlha ke ho monya maqhubu a phahameng a libese, ho feto-fetoha ha motlakase o boreleli, le ho sireletsa lisebelisoa tsa switching tsa IGBT/SiC MOSFET ho matla a nakoana le ho phahama ha hona joale.
Q2: Ke hobane'ng ha sethala sa 800V se hloka li-capacitor tsa filimi tse sebetsang hantle?
A: Ha motlakase oa libese o ntse o eketseha ho tloha ho 400V ho ea ho 800V, litlhoko tsa capacitor tse mamellang motlakase, ho monya ha motlakase hona joale, le ho qhala ha mocheso ho eketseha haholo. Litšobotsi tse tlase tsa ESR le tse phahameng tse mamellang voltage ea li-capacitor tsa lifilimi li loketse haholoanyane tikolohong ea matla a phahameng.
Q3: Ke melemo efe ea mantlha ea li-capacitor tsa lifilimi ho feta li-electrolytic capacitor likoloing tse ncha tsa matla?
A: Li fana ka matla a phahameng a ho mamella, ESR e tlase, ha li polar, 'me li na le nako e telele ea bophelo. Maqhubu a bona a resonant a phahame haholo ho feta a electrolytic capacitor, a tsamaellanang le litlhoko tsa ho fetoha ha maqhubu a phahameng a SiC MOSFET.
Q4: Ke hobane'ng ha li-capacitor tse ling li baka habonolo ho phahama ha motlakase ho li-inverters tsa SiC?
A: ESR e phahameng le maqhubu a tlaase a resonant a li thibela ho monya ka mokhoa o nepahetseng maqhubu a phahameng a ripple current. Ha SiC e fetoha ka lebelo le potlakileng, ho phahama ha motlakase hoa eketseha, ho ka senyang sesebelisoa.
Q5: Li-capacitor tsa lifilimi li thusa joang ho fokotsa boholo ba lisebelisoa tsa motlakase oa motlakase?
A: Phuputsong ea nyeoe ea Wolfspeed, mochine oa 40kW SiC o ne o hloka li-capacitor tse robeli feela tsa filimi (ha ho bapisoa le 22 electrolytic capacitor bakeng sa li-IGBT tse thehiloeng ho silicon), ho fokotsa haholo maoto a PCB le boima ba 'mele.
Q6: Ke litlhokahalo life tse ncha tse etsang hore ho feto-fetoha ho phahameng ho behoe ho li-capacitor tsa DC-Link?
A: ESR e tlase ea hlokahala ho fokotsa tahlehelo ea ho fetola, ho hlokahala maqhubu a phahameng a resonant ho hatella maqhubu a phahameng, 'me dv/dt e betere ea ho mamella le eona ea hlokahala.
Q7: Ho tšepahala ha bophelo ba li-capacitor tsa lifilimi ho hlahlojoa joang?
A: E itšetlehile ka botsitso ba mocheso oa thepa (mohlala, filimi ea polypropylene) le moralo oa ho senya mocheso. Ka mohlala, letoto la YMIN MDP le ntlafatsa nako ea bophelo ka mocheso o phahameng ka ho ntlafatsa sebopeho sa ho senya mocheso.
Q8: ESR ea li-capacitor tsa lifilimi e ama ts'ebetso ea sistimi joang?
A: ESR e tlase e fokotsa tahlehelo ea matla nakong ea phetoho, e theola khatello ea motlakase, 'me e ntlafatsa ka kotloloho ts'ebetso ea inverter.
Q9: Ke hobane'ng ha li-capacitor tsa lifilimi li loketse haholoanyane bakeng sa libaka tsa likoloi tse thothomelang haholo?
A: Sebopeho sa tsona se tiileng, se haelloang ke electrolyte ea metsi, se fana ka khanyetso e phahameng ea ho sisinyeha ha e bapisoa le li-capacitor tsa electrolytic, 'me ho kenngoa ha tsona ntle le polarity ho li etsa hore li fetohe habonolo.
Q10: Ke tekanyo efe ea hona joale ea ho kenella ha li-capacitor tsa lifilimi ho li-inverters tsa motlakase?
A: Ka 2022, matla a kentsoeng a li-inverters a thehiloeng ho filimi a fihletse li-unit tse limilione tse 5.1117, e leng karolo ea 88.7% ea kakaretso e kentsoeng ea litsamaiso tsa taolo ea motlakase. Likhamphani tse etelletseng pele joalo ka Tesla le Nidec li nkile karolo ea 82.9%.
Q11: Ke hobane'ng ha li-capacitor tsa filimi li ntse li sebelisoa ho li-inverters tsa photovoltaic?
K: Litlhokahalo tsa ts'epo e phahameng le bophelo bo bolelele li ts'oana le tsa lits'ebetso tsa likoloi, hape li hloka ho mamella ho fetoha ha mocheso kantle.
Q12: Letoto la MDP le sebetsana joang le mathata a khatello ea motlakase lipotolohong tsa SiC?
A: Sebopeho sa eona se tlaase sa ESR se fokotsa ho fetoha ho feteletseng, ho ntlafatsa dv / dt ho mamella ka 30%, le ho fokotsa kotsi ea ho senyeha ha motlakase.
Q13: Letoto lee le sebetsa joang ka mocheso o phahameng?
A: Ho sebelisa thepa e tsitsitseng ea mocheso o phahameng le mohaho o sebetsang hantle oa ho senya mocheso, re netefatsa hore tekanyo ea ho senyeha ha matla e ka tlase ho 5% ho 125 ° C.
Q14: Letoto la MDP le fihlella miniaturization joang?
A: Theknoloji e ncha ea filimi e tšesaane e eketsa bokhoni ba yuniti ka 'ngoe, e leng se bakang matla a matla a fetang karolelano ea indasteri, e leng se nolofalletsang meralo ea ho khanna ka motlakase.
Q15: Litsenyehelo tsa pele tsa li-capacitor tsa filimi li phahame ho feta tsa electrolytic capacitors. Na li fana ka monyetla oa litšenyehelo ho feta nako ea bophelo?
A: Ho joalo. Li-capacitor tsa lifilimi li ka tšoarella ho fihlela bophelo ba koloi ntle le ho nkeloa sebaka, ha li-electrolytic capacitor li hloka tlhokomelo ea kamehla. Ha nako e ntse e ea, li-capacitor tsa lifilimi li fana ka litšenyehelo tse tlase ka kakaretso.
Nako ea poso: Oct-14-2025