Eminyakeni yamuva nje, ukuthuthukiswa okukhulayo kwezimboni zamandla amasha njenge-photovoltaic storage kanye nezimoto zikagesi (EVs) kuholele ekwenyukeni okukhulu kwesidingo sama-DC-Link capacitor. Ngamafuphi, ama-DC-Link capacitor adlala indima ebalulekile kusekethe. Bangakwazi ukumunca ama-pulse currents aphezulu ekupheleni kwebhasi futhi bashelelezi ugesi webhasi, baqinisekise ukuthi amaswishi e-IGBT ne-SiC MOSFET avikelekile emiphumeleni emibi yamagagasi okushaya kwenhliziyo aphezulu kanye nomthamo wesikhashana phakathi nokusebenza.
Njengoba i-voltage yebhasi yezimoto ezintsha ezinamandla ikhuphuka isuka ku-400V iye ku-800V, isidingo sama-capacitor amafilimu sikhule kakhulu. Ngokusho kwedatha, umthamo ofakiwe wama-inverters okushayela kagesi asuselwa ku-DC-Link thin-film capacitors afinyelele kumasethi ayizigidi ezi-5.1117 ngo-2022, okubalelwa ku-88.7% womthamo ofakiwe wokulawula ugesi. Ama-inverter ezinkampani eziningi ezihamba phambili zokulawula ugesi njenge-Tesla ne-Nidec zonke zisebenzisa ama-capacitor amafilimu e-DC-Link, athatha u-82.9% wamandla afakiwe futhi asephenduke inketho ethandwa kakhulu emakethe yokushayela ugesi.
Amaphepha ocwaningo abonisa ukuthi kuma-inverter e-silicon IGBT ehhafu yebhuloho, ama-capacitor endabuko e-electrolytic avame ukusetshenziswa kusixhumanisi se-DC, kodwa ukukhuphuka kwamandla kagesi kuzokwenzeka ngenxa ye-ESR ephezulu yama-electrolytic capacitor. Uma kuqhathaniswa nezixazululo ze-IGBT ezisekelwe ku-silicon, ama-SiC MOSFET anemvamisa yokushintsha ephezulu, ngakho-ke i-voltage surge amplitude kusixhumanisi se-DC se-inverter ye-half-bridge iphakeme, engabangela ukuwohloka kokusebenza kwedivayisi noma ngisho nomonakalo, futhi imvamisa ezwakalayo yama-electrolytic capacitor yi-4kHz kuphela, enganele ukumunca i-ripple yamanje ye-MOSC ku-SiverC.
Ngakho-ke, ezinhlelweni ze-DC ezifana nama-inverter kagesi kanye nama-photovoltaic inverters anezidingo zokuthembeka okuphezulu,ifilimu capacitorszivame ukukhethwa. Uma kuqhathaniswa nama-capacitor e-aluminium electrolytic, izinzuzo zawo zokusebenza ziwukumelana ne-voltage ephezulu, i-ESR ephansi, i-non-polarity, ukusebenza okuzinzile, nokuphila isikhathi eside, ngaleyo ndlela kuzuzwe ukumelana okunamandla kwe-ripple kanye nomklamo wesistimu othembeke kakhudlwana.
Amasistimu asebenzisa ama-capacitor amafilimu amancane angathatha ithuba lokuvama okuphezulu nokulahlekelwa okuphansi kwama-SiC MOSFET futhi anciphise usayizi nesisindo sezingxenye ze-passive. Ucwaningo lwe-Wolfspeed lubonisa ukuthi inverter ye-IGBT esekelwe ku-silicon engu-10kW idinga ama-capacitor e-aluminium electrolytic angu-22, kuyilapho i-40kW SiC inverter idinga kuphela ama-capacitor amafilimu amancane angu-8, futhi indawo ye-PCB nayo iyancipha kakhulu.
Ukuphendula isidingo semakethe, i-YMIN Electronics yethule uhleloUchungechunge lwe-MDP lwama-filimi capacitor, ezisebenzisa ubuchwepheshe obuthuthukisiwe nezinto ezisezingeni eliphezulu ukuze zivumelane ne-SiC MOSFET kanye ne-silicon-based IGBT. Ama-capacitor ochungechunge lwe-MDP afaka i-ESR ephansi, i-voltage ephezulu yokumelana, ukuvuza okuphansi kwamanje kanye nokuzinza okuphezulu kwezinga lokushisa.
Izinzuzo zemikhiqizo ye-film capacitor ye-YMIN Electronics:
Idizayini ye-capacitor yefilimu ye-YMIN Electronics yamukela umqondo ophansi we-ESR ukuze kuncishiswe ukucindezelwa kwamandla kagesi kanye nokulahlekelwa kwamandla ngesikhathi sokushintsha nokuthuthukisa ukusebenza kahle kwamandla esistimu. Ine-voltage enezinga eliphezulu, ivumelana nezindawo zamandla kagesi aphezulu, futhi iqinisekisa ukuzinza kwesistimu.
Ama-capacitor ochungechunge lwe-MDP anebanga lomthamo we-1uF-500uF kanye nobubanzi bamandla kagesi obungu-500V ukuya ku-1500V. Zinokuvuza okuphansi kwamanje kanye nokuzinza okuphezulu kwezinga lokushisa. Ngokusebenzisa izinto ezisezingeni eliphezulu kanye nezinqubo ezithuthukisiwe, isakhiwo esisebenza kahle sokulahla ukushisa siklanyelwe ukuqinisekisa ukusebenza okuzinzile emazingeni okushisa aphezulu, sandise impilo yesevisi, futhi sinikeze ukusekelwa okuthembekile kwamasistimu kagesi kagesi. Ngesikhathi esifanayo, i-Ama-capacitor ochungechunge lwe-MDPzihlangene ngosayizi, ziphezulu ngamandla amakhulu, futhi zisebenzisa izinqubo zokukhiqiza amafilimu amancane ukuze kuthuthukiswe ukudidiyelwa kwesistimu nokusebenza kahle, ukunciphisa usayizi nesisindo, futhi kwandise ukuphatheka kwemishini nokuvumelana nezimo.
I-YMIN Electronics DC-Link ifilimu capacitor uchungechunge luthuthuke ngo-30% ekubekezeleleni i-dv/dt kanye nokwenyuka okungu-30% kwempilo yesevisi, okuthuthukisa ukwethembeka kwamasekhethi e-SiC/IGBT, kuletha ukusebenza kahle kwezindleko, futhi kuxazulule inkinga yamanani.
Isikhathi sokuthumela: Jan-10-2025