Lilemong tsa morao tjena, tsoelo-pele e ntseng e eketseha ea liindasteri tse ncha tsa matla tse kang polokelo ea photovoltaic le likoloi tsa motlakase (EVs) e lebisitse ho eketseha ho matla ha tlhokahalo ea li-capacitor tsa DC-Link. Ka bokhutšoanyane, li-capacitor tsa DC-Link li bapala karolo ea bohlokoa potolohong. Ba khona ho monya maqhubu a phahameng a ho otla ha bese qetellong ea libese, 'me ba thethefatsa motlakase oa libese, ba etsa bonnete ba hore li-switches tsa IGBT le SiC MOSFET li sirelelitsoe liphellong tse mpe tsa maqhubu a phahameng a maqhubu le maqhubu a nakoana nakong ea ts'ebetso.
Ha matla a libese a likoloi tse ncha tsa matla a eketseha ho tloha ho 400V ho ea ho 800V, tlhokahalo ea li-capacitor tsa lifilimi e eketsehile haholo. Ho ea ka datha, matla a kentsoeng a li-inverters tsa motlakase tse thehiloeng ho li-capacitor tsa DC-Link tse tšesaane li fihlile ho sete ea limilione tse 5.1117 ka 2022, e leng karolo ea 88.7% ea matla a kentsoeng a taolo ea motlakase. Li-inverter tsa likhamphani tse ngata tse etellang pele tsa taolo ea motlakase joalo ka Tesla le Nidec kaofela li sebelisa li-capacitor tsa lifilimi tsa DC-Link, tse etsang karolo ea 82.9% ea matla a kentsoeng mme e fetohile khetho e ka sehloohong 'marakeng oa likoloi tsa motlakase.
Lipampiri tsa lipatlisiso li bonts'a hore ho li-inverters tsa silicon IGBT halofo ea borokho, li-capacitor tsa setso tsa electrolytic hangata li sebelisoa sehokelong sa DC, empa ho phahama ha motlakase ho tla etsahala ka lebaka la ESR e phahameng ea electrolytic capacitor. Ha ho bapisoa le litharollo tsa IGBT tse thehiloeng ho silicon, li-SiC MOSFETs li na le maqhubu a phahameng a ho fetoha, ka hona, maqhubu a matla a ho phahama ha motlakase ho DC link ea halofo ea borokho ba inverter e phahame, e ka bakang ho senyeha ha sesebelisoa kapa ho senya, 'me maqhubu a motlakase oa electrolytic capacitor ke 4kHz feela, e sa lekaneng ho monya ripple ea hona joale ea MOSC ho SiverC.
Ka hona, lits'ebetsong tsa DC tse kang li-inverters tsa motlakase le li-inverters tsa photovoltaic tse nang le litlhoko tse phahameng tsa ho tšepahala,li-capacitor tsa lifilimihangata ba khethoa. Ha ho bapisoa le li-capacitor tsa aluminium electrolytic, melemo ea bona ea ts'ebetso ke ho hanyetsa matla a mangata, ho fokotseha ha ESR, ho se polarity, ts'ebetso e tsitsitseng haholoanyane, le bophelo bo bolelele, kahoo ba finyella khanyetso e matla ea ripple le moralo o ka tšeptjoang oa tsamaiso.
Litsamaiso tse sebelisang li-capacitor tsa lifilimi tse tšesaane li ka nka monyetla ka lebelo le phahameng le tahlehelo e tlase ea SiC MOSFETs le ho fokotsa boholo le boima ba likarolo tse sa sebetseng. Lipatlisiso tsa Wolfspeed li bontša hore 10kW silicon-based IGBT inverter e hloka 22 aluminium electrolytic capacitor, ha 40kW SiC inverter e hloka feela li-capacitor tse tšesaane tse 8, 'me sebaka sa PCB le sona se fokotsehile haholo.
E le ho arabela tlhokahalo ea 'maraka, YMIN Electronics e ile ea tsebisaLetoto la MDP la li-capacitor tsa lifilimi, tse sebelisang theknoloji e tsoetseng pele le thepa ea boleng bo holimo ho ikamahanya le SiC MOSFET le IGBT e thehiloeng ka silicon. Li-capacitor tsa MDP li na le ESR e tlase, matla a ho mamella a phahameng, ho lutla ho tlase hona joale le botsitso bo phahameng ba mocheso.
Melemo ea lihlahisoa tsa filimi tsa YMIN Electronics:
Moralo oa capacitor oa filimi oa YMIN Electronics o amohela mohopolo o tlase oa ESR ho fokotsa khatello ea motlakase le tahlehelo ea matla nakong ea ho chencha le ho ntlafatsa ts'ebetso ea matla a sistimi. E na le matla a phahameng a matla, e ikamahanya le maemo a matla a phahameng, 'me e netefatsa botsitso ba sistimi.
Li-capacitor tsa letoto la MDP li na le matla a fapaneng a 1uF-500uF le mefuta e fapaneng ea voltage ea 500V ho isa ho 1500V. Li na le botsitso bo tlase ba ho lutla ha hona joale le mocheso o phahameng. Ka lisebelisoa tsa boleng bo phahameng le mekhoa e tsoetseng pele, mohaho o sebetsang hantle oa ho senya mocheso o etselitsoe ho netefatsa ts'ebetso e tsitsitseng ka mocheso o phahameng, ho lelefatsa bophelo ba tšebeletso, le ho fana ka tšehetso e ka tšeptjoang bakeng sa lisebelisoa tsa elektronike tsa matla. Ka nako e tšoanang, theLi-capacitor tsa letoto la MDPli kopane ka boholo, matla a mangata a matla, 'me li sebelisa mekhoa e mecha ea ho etsa lifilimi tse tšesaane ho ntlafatsa kopanyo ea tsamaiso le katleho, ho fokotsa boholo le boima ba' mele, le ho eketsa bokhoni ba thepa le ho fetoha habonolo.
YMIN Electronics DC-Link letoto la li-capacitor tsa lifilimi le na le ntlafatso ea 30% ea mamello ea dv / dt le keketseho ea 30% ea bophelo ba tšebeletso, e ntlafatsang ho tšepahala ha lipotoloho tsa SiC / IGBT, ho tlisa litšenyehelo tse ntle, le ho rarolla bothata ba theko.
Nako ea poso: Jan-10-2025