Lilemong tsa morao tjena, nts'etsopele e ntseng e hola ea liindasteri tse ncha tsa eneji tse kang polokelo ea photovoltaic le likoloi tsa motlakase (EVs) e lebisitse keketsehong e kholo ea tlhoko ea li-capacitor tsa DC-Link. Ka bokhutšoanyane, li-capacitor tsa DC-Link li bapala karolo ea bohlokoa potolohong. Li ka monya maqhubu a phahameng a pulse qetellong ea bese le ho thellisa motlakase oa bese, ho netefatsa hore li-switch tsa IGBT le SiC MOSFET li sirelelitsoe liphellong tse mpe tsa maqhubu a phahameng a pulse le li-voltage tsa nakoana nakong ea ts'ebetso.
Ha motlakase oa bese oa likoloi tse ncha tsa matla o ntse o eketseha ho tloha ho 400V ho ea ho 800V, tlhoko ea li-capacitor tsa lifilimi e eketsehile haholo. Ho ea ka lintlha, bokhoni bo kentsoeng ba li-inverter tsa motlakase tse thehiloeng ho li-capacitor tsa DC-Link tse tšesaane li fihlile ho li-sete tse limilione tse 5.1117 ka 2022, e leng se etsang 88.7% ea bokhoni bo kentsoeng ba taolo ea motlakase. Li-inverter tsa motlakase tsa lik'hamphani tse ngata tse etellang pele tsa taolo ea motlakase tse kang Tesla le Nidec kaofela li sebelisa li-capacitor tsa lifilimi tsa DC-Link, tse etsang 82.9% ea bokhoni bo kentsoeng 'me e se e le khetho e kholo' marakeng oa li-drive tsa motlakase.
Lipampiri tsa lipatlisiso li bontša hore ho li-inverter tsa halofo ea borokho ba silicon IGBT, li-capacitor tsa setso tsa electrolytic hangata li sebelisoa khokahanong ea DC, empa ho phahama ha motlakase ho tla etsahala ka lebaka la ESR e phahameng ea li-capacitor tsa electrolytic. Ha li bapisoa le litharollo tsa IGBT tse thehiloeng ho silicon, li-MOSFET tsa SiC li na le maqhubu a ho chencha a phahameng, kahoo amplitude ea ho phahama ha motlakase khokahanong ea DC ea inverter ea halofo ea borokho e phahame, e leng se ka bakang ho senyeha ha ts'ebetso ea sesebelisoa kapa esita le tšenyo, 'me maqhubu a resonant a li-capacitor tsa electrolytic ke 4kHz feela, e leng se sa lekaneng ho monya ripple ea hona joale ea li-inverter tsa SiC MOSFET.
Ka hona, lits'ebetsong tsa DC tse kang li-inverter tsa motlakase le li-inverter tsa photovoltaic tse nang le litlhoko tse phahameng tsa ts'epo,li-capacitor tsa filimihangata li khethoa. Ha li bapisoa le li-capacitor tsa electrolytic tsa aluminium, melemo ea tsona ea ts'ebetso ke khanyetso e phahameng ea motlakase, ESR e tlase, ho se be le polarity, ts'ebetso e tsitsitseng haholoanyane, le bophelo bo bolelele, ka hona li fihlella khanyetso e matla ea maqhubu le moralo oa sistimi o tšepahalang haholoanyane.
Ditsamaiso tse sebedisang di-capacitor tsa filimi e tshesane di ka nka monyetla ka tahlehelo e phahameng le e tlase ya di-MOSFET tsa SiC mme tsa fokotsa boholo le boima ba dikarolo tse sa sebetseng. Diphuputso tsa Wolfspeed di bontsha hore inverter ya IGBT ya 10kW e thehilweng ho silicon e hloka di-capacitor tsa electrolytic tsa aluminium tse 22, ha inverter ya SiC ya 40kW e hloka di-capacitor tse tshesane tse 8 feela, mme sebaka sa PCB le sona se fokotsehile haholo.
Ka lebaka la tlhoko ea 'maraka, YMIN Electronics e qalileLetoto la li-capacitor tsa lifilimi tsa MDP, tse sebelisang theknoloji e tsoetseng pele le thepa ea boleng bo holimo ho ikamahanya le SiC MOSFET le IGBT e thehiloeng ho silicon. Li-capacitor tsa letoto la MDP li na le ESR e tlase, motlakase o mamellang o phahameng, motlakase o tlase oa ho lutla le botsitso ba mocheso o phahameng.
Melemo ea lihlahisoa tsa capacitor ea lifilimi tsa YMIN Electronics:
Moralo oa capacitor ea filimi ea YMIN Electronics o sebelisa 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 motlakase o phahameng, e ikamahanya le tikoloho ea motlakase o phahameng, 'me e netefatsa botsitso ba sistimi.
Li-capacitor tsa letoto la MDP li na le boholo ba 1uF-500uF le bophahamo ba motlakase ba 500V ho isa ho 1500V. Li na le botsitso bo tlase ba hona joale ba ho lutla le mocheso o phahameng. Ka thepa ea boleng bo holimo le lits'ebetso tse tsoetseng pele, sebopeho se sebetsang hantle sa ho qhala mocheso se etselitsoe ho netefatsa ts'ebetso e tsitsitseng mochesong o phahameng, ho eketsa bophelo ba ts'ebeletso, le ho fana ka tšehetso e tšepahalang bakeng sa litsamaiso tsa motlakase tsa motlakase. Ka nako e ts'oanang,Li-capacitor tsa letoto la MDPli nyane ka boholo, li na le matla a mangata, 'me li sebelisa mekhoa e mecha ea tlhahiso ea filimi e tšesaane ho ntlafatsa kopanyo le katleho ea sistimi, ho fokotsa boholo le boima, le ho eketsa ho tsamaisoa ha lisebelisoa le ho tenyetseha.
Letoto la YMIN Electronics DC-Link film capacitor le na le ntlafatso ea 30% mamellong ea dv/dt le keketseho ea 30% bophelong ba ts'ebeletso, e leng se ntlafatsang ts'epo ea lipotoloho tsa SiC/IGBT, se tlisang katleho e betere ea litšenyehelo, le ho rarolla bothata ba theko.
Nako ea poso: Pherekhong-10-2025