Eminyakeni yamuva nje, intuthuko ekhulayo yezimboni ezintsha zamandla njengesitoreji se-photovoltaic kanye nezimoto zikagesi (ama-EV) iholele ekwandeni okukhulu kwesidingo sama-capacitor e-DC-Link. Ngamafuphi, ama-capacitor e-DC-Link adlala indima ebalulekile kusekethe. Angamunca ama-pulse currents aphezulu ekugcineni kwebhasi futhi asheleleze i-voltage yebhasi, aqinisekise ukuthi izinkinobho ze-IGBT kanye ne-SiC MOSFET zivikelekile emiphumeleni emibi yama-pulse currents aphezulu kanye nama-voltage adlulayo ngesikhathi sokusebenza.
Njengoba i-voltage yebhasi yezimoto ezintsha zamandla ikhuphuka isuka ku-400V iye ku-800V, isidingo sama-capacitor efilimu sikhuphuke kakhulu. Ngokusho kwedatha, amandla afakiwe ama-inverter okushayela kagesi asekelwe kuma-capacitor e-DC-Link thin-film afinyelele kumasethi ayizigidi ezingu-5.1117 ngo-2022, abiza u-88.7% wamandla afakiwe okulawula kagesi. Ama-inverter okushayela ezinkampanini eziningi ezihamba phambili zokulawula kagesi njengeTesla neNidec wonke asebenzisa ama-capacitor efilimu e-DC-Link, abiza u-82.9% wamandla afakiwe futhi abe yisinqumo esiyinhloko emakethe yokushayela kagesi.
Amaphepha ocwaningo abonisa ukuthi kuma-inverter e-silicon IGBT half-bridge, ama-capacitor e-electrolytic endabuko avame ukusetshenziswa kusixhumanisi se-DC, kodwa ukwanda kwamandla kagesi kuzokwenzeka ngenxa ye-ESR ephezulu yama-capacitor e-electrolytic. Uma kuqhathaniswa nezixazululo ze-IGBT ezisekelwe ku-silicon, ama-SiC MOSFET anemvamisa yokushintsha ephezulu, ngakho-ke ukuphakama kwamandla kagesi kusixhumanisi se-DC se-inverter ye-half-bridge kuphakeme, okungabangela ukuwohloka kokusebenza kwedivayisi noma ngisho nomonakalo, kanti imvamisa ye-resonant yama-capacitor e-electrolytic ingu-4kHz kuphela, okunganele ukumunca i-ripple yamanje yama-inverter e-SiC MOSFET.
Ngakho-ke, kuzinhlelo zokusebenza ze-DC ezifana nama-inverter kagesi kanye nama-inverter e-photovoltaic anezidingo zokuthembeka okuphezulu,ama-capacitor efilimukuvame ukukhethwa. Uma kuqhathaniswa nama-capacitor e-aluminium electrolytic, izinzuzo zawo zokusebenza ukumelana ne-voltage ephezulu, i-ESR ephansi, i-non-polarity, ukusebenza okuzinzile, kanye nokuphila isikhathi eside, ngaleyo ndlela kufinyelela ukumelana okunamandla kwe-ripple kanye nomklamo wesistimu onokwethenjelwa kakhulu.
Izinhlelo ezisebenzisa ama-capacitor efilimu encane zingasebenzisa imvamisa ephezulu kanye nokulahlekelwa okuphansi kwama-SiC MOSFET futhi zinciphise usayizi nesisindo sezingxenye ezingasebenzi. Ucwaningo lwe-Wolfspeed lubonisa ukuthi i-inverter ye-IGBT esuselwe ku-silicon engu-10kW idinga ama-capacitor e-electrolytic angu-22 e-aluminium, kuyilapho i-inverter ye-SiC engu-40kW idinga ama-capacitor efilimu encane angu-8 kuphela, kanti indawo ye-PCB nayo incishisiwe kakhulu.
Ukuphendula isidingo semakethe, i-YMIN Electronics yethule i-Uchungechunge lwe-MDP lwama-capacitor efilimu, ezisebenzisa ubuchwepheshe obuthuthukisiwe nezinto ezisezingeni eliphezulu ukuze zivumelane ne-SiC MOSFET kanye ne-IGBT esekelwe ku-silicon. Ama-capacitor ochungechunge lwe-MDP ane-ESR ephansi, i-voltage ephezulu yokumelana, i-leaking current ephansi kanye nokuqina kokushisa okuphezulu.
Izinzuzo zemikhiqizo ye-capacitor yefilimu ye-YMIN Electronics:
Idizayini ye-capacitor yefilimu ye-YMIN Electronics isebenzisa umqondo we-ESR ophansi ukunciphisa ukucindezeleka kwamandla kagesi kanye nokulahlekelwa amandla ngesikhathi sokushintsha nokuthuthukisa ukusebenza kahle kwamandla ohlelweni. Ine-voltage ekalwe kakhulu, ivumelana nezimo ze-voltage ephezulu, futhi iqinisekisa ukuzinza kohlelo.
Ama-capacitor ochungechunge lwe-MDP anobubanzi bomthamo obungu-1uF-500uF kanye nobubanzi be-voltage obungu-500V kuya ku-1500V. Ane-current evuzayo ephansi kanye nokuqina kokushisa okuphezulu. Ngokusebenzisa izinto ezisezingeni eliphezulu kanye nezinqubo ezithuthukisiwe, isakhiwo esisebenzayo sokusabalalisa ukushisa senzelwe ukuqinisekisa ukusebenza okuzinzile emazingeni okushisa aphezulu, ukwandisa impilo yesevisi, kanye nokunikeza ukwesekwa okuthembekile kwezinhlelo zikagesi zamandla. Ngesikhathi esifanayo,Ama-capacitor ochungechunge lwe-MDPzincane ngobukhulu, zinamandla amaningi, futhi zisebenzisa izinqubo ezintsha zokukhiqiza ifilimu encane ukuthuthukisa ukuhlanganiswa nokusebenza kahle kwesistimu, ukunciphisa usayizi nesisindo, nokwandisa ukuphatheka kwemishini nokuguquguquka.
Uchungechunge lwe-YMIN Electronics DC-Link film capacitor lunokuthuthukiswa okungu-30% ekubekezeleleni i-dv/dt kanye nokwenyuka okungu-30% empilweni yesevisi, okuthuthukisa ukuthembeka kwamasekethe e-SiC/IGBT, kuletha ukusebenza kahle kwezindleko, futhi kuxazulula inkinga yentengo.
Isikhathi sokuthunyelwe: Jan-10-2025