Ihhashi elihle lifanelwe isihlalo esihle! Ukuze usebenzise ngokugcwele izinzuzo zamadivayisi we-SiC, kuyadingeka futhi ukubhanqa uhlelo lwesekethe nama-capacitor afanelekile. Kusukela ekulawuleni okuyinhloko ezimotweni zikagesi ukuya kuzimo zamandla amasha anamandla amakhulu njengama-inverter e-photovoltaic, ama-filimi capacitor aya ngokuya esetshenziswa, futhi imakethe idinga ngokushesha imikhiqizo ebiza kakhulu.
Muva nje, i-Shanghai Yongming Electronic Co., Ltd. yethule ama-capacitor amafilimu asekelayo e-DC, anezinzuzo ezine ezivelele eziwenza afanelekele ama-IGBT esizukulwane sesikhombisa se-Infineon. Baphinde basize ukubhekana nezinselelo zokuzinza, ukwethembeka, ukwenza okuncane, kanye nezindleko ezinhlelweni ze-SiC.
Ama-capacitor amafilimu afinyelela cishe ukungena okungu-90% ezinhlelweni zokushayela eziyinhloko. Kungani i-SiC ne-IGBT ibadinga?
Eminyakeni yamuva nje, ngokuthuthuka okusheshayo kwezimboni zamandla amasha njengokugcina amandla, ukushaja, nezimoto zikagesi (EVs), isidingo sama-DC-Link capacitor siye sakhula ngokushesha. Kalula nje, ama-DC-Link capacitor asebenza njengezibhafa kumasekhethi, adonsa ama-pulse currents aphezulu asuka ekugcineni kwebhasi kanye nogesi webhasi ashelelayo, ngaleyo ndlela avikele amaswishi e-IGBT ne-SiC MOSFET kuma-pulse currents aphezulu kanye nemithelela yamandla kagesi wesikhashana.
Ngokuvamile, i-aluminium electrolytic capacitor isetshenziswa ezinhlelweni zokusekela ze-DC. Kodwa-ke, njengoba amandla kagesi ebhasi ezimoto ezintsha ekhuphuka esuka ku-400V ukuya ku-800V kanye nezinhlelo ze-photovoltaic eziya ku-1500V ngisho naku-2000V, isidingo sama-capacitor amafilimu sikhuphuka kakhulu.
Idatha ibonisa ukuthi ngo-2022, umthamo ofakiwe wama-inverters kagesi asekelwe kuma-capacitor amafilimu e-DC-Link afinyelele kumayunithi ayizigidi ezingu-5.1117, okulinganiselwa ku-88.7% yenani eliphelele elifakiwe lokulawula i-elekthronikhi. Izinkampani ezihamba phambili zokulawula i-elekthronikhi ezifana ne-Fudi Power, i-Tesla, i-Inovance Technology, i-Nidec, ne-Wiran Power zonke zisebenzisa ama-capacitor amafilimu e-DC-Link kuma-inverter azo okushayela, anesilinganiso somthamo esihlanganisiwe esifika ku-82.9%. Lokhu kukhombisa ukuthi ama-filimi capacitor athathe indawo yama-electrolytic capacitor njengendawo ehamba phambili emakethe yokushayela ugesi.
Lokhu kungenxa yokuthi ubukhulu be-voltage ukumelana ne-aluminium electrolytic capacitor cishe bungama-630V. Ku-voltage ephezulu namandla aphezulu ngaphezu kuka-700V, ama-electrolytic capacitor amaningi adinga ukuxhunywa ochungechungeni nokuhambisana ukuze kuhlangatshezwane nezidingo zokusetshenziswa, okuletha ukulahlekelwa kwamandla okwengeziwe, izindleko ze-BOM, nezinkinga zokuthembeka.
Iphepha locwaningo elivela eNyuvesi yaseMalaysia libonisa ukuthi ama-electrolytic capacitor avame ukusetshenziswa kusixhumanisi se-DC sama-silicon IGBT ama-half-bridge inverters, kodwa ukunyuka kwama-voltage kungenzeka ngenxa yokumelana okuphezulu okufanayo kochungechunge (ESR) kwama-electrolytic capacitor. Uma kuqhathaniswa nezixazululo ze-IGBT ezisekelwe ku-silicon, ama-SiC MOSFET anamaza okushintsha aphezulu, okuholela ekukhuphukeni kwama-voltage aphezulu kusixhumanisi se-DC sama-inverter e-half-bridge. Lokhu kungaholela ekonakaleni kokusebenza kwedivayisi noma ngisho nomonakalo, njengoba imvamisa yokuzwakala kwe-electrolytic capacitor ingu-4kHz kuphela, ayanele ukumunca i-ripple yamanje yeziguquli ze-SiC MOSFET.
Ngakho-ke, ezinhlelweni ze-DC ezinezidingo zokuthembeka okuphezulu, njengama-inverters kagesi kagesi nama-photovoltaic inverters, ama-capacitor wefilimu avame ukukhethwa. Uma kuqhathaniswa nama-aluminium electrolytic capacitor, izinzuzo zawo zokusebenza zifaka ukumelana nogesi ophakeme, i-ESR ephansi, akukho polarity, ukusebenza okuzinzile, nempilo ende, okuvumela idizayini yesistimu enokwethenjelwa kakhudlwana enokumelana okunamandla kwe-ripple.
Ukwengeza, ukusebenzisa ama-filimi capacitor ohlelweni kungasebenzisa ngokuphindaphindiwe izinzuzo ze-high-frequency, ukulahlekelwa okuphansi kwe-SiC MOSFETs, kunciphisa kakhulu usayizi nesisindo sezingxenye ze-passive (inductors, transformers, capacitor) ohlelweni. Ngokocwaningo lwe-Wolfspeed, i-inverter ye-IGBT esekelwe ku-silicon engu-10kW idinga ama-capacitor e-aluminium electrolytic angu-22, kuyilapho inverter engu-40kW SiC idinga kuphela ama-capacitor amafilimu ayi-8, inciphisa kakhulu indawo ye-PCB.
I-YMIN Yethula Ama-Capacitor Amafilimu Amasha anezinzuzo Ezine Ezinkulu Zokusekela Imboni Yamandla Entsha
Ukuze kubhekwane nezidingo eziphuthumayo zemakethe, i-YMIN isanda kwethula i-MDP kanye ne-MDR uchungechunge lwama-DC asekela ama-filimi capacitor. Ngokusebenzisa izinqubo zokukhiqiza ezithuthukisiwe nezinto ezisezingeni eliphezulu, lawa ma-capacitor ahambisana ngokuphelele nezidingo zokusebenza ze-SiC MOSFETs kanye nama-IGBT asekelwe ku-silicon avela kubaholi bomhlaba jikelele be-semiconductor bamandla njenge-Infineon.
I-YMIN's MDP kanye ne-MDR series capacitor yefilimu inezici ezimbalwa eziphawulekayo: ukumelana nochungechunge olulinganayo oluphansi (ESR), i-voltage enesilinganiso esiphezulu, ukuvuza okuphansi kwamanje, nokuzinza okuphezulu kwezinga lokushisa.
Okokuqala, ama-capacitor amafilimu e-YMIN afaka idizayini ye-ESR ephansi, enciphisa ngempumelelo ukucindezelwa kwamandla kagesi ngesikhathi kushintshwa ama-SiC MOSFETs nama-IGBT asekelwe ku-silicon, ngaleyo ndlela kuncishiswe ukulahleka kwe-capacitor futhi kuthuthukiswe ukusebenza kahle kohlelo lonke. Ukwengeza, lawa ma-capacitor ane-voltage esezingeni eliphakeme, ekwazi ukumelana nezimo zamandla kagesi aphezulu kanye nokuqinisekisa ukusebenza okuzinzile kwesistimu.
Uchungechunge lwe-MDP ne-MDR lwama-capacitor amafilimu e-YMIN lunikeza ububanzi be-5uF-150uF no-50uF-3000uF, kanye nobubanzi bamandla kagesi obungu-350V-1500V no-350V-2200V, ngokulandelana.
Okwesibili, ama-capacitor akamuva efilimu we-YMIN anovuza okuphansi kwamanje kanye nokuzinza okuphezulu kwezinga lokushisa. Endabeni yezinhlelo zokulawula i-elekthronikhi yemoto kagesi, ngokuvamile enamandla amakhulu, ukukhiqizwa kokushisa okuwumphumela kungathinta kakhulu isikhathi sokuphila nokuthembeka kwama-capacitor wefilimu. Ukuze kubhekwane nalokhu, uchungechunge lwe-MDP kanye ne-MDR oluvela ku-YMIN luhlanganisa izinto zekhwalithi ephezulu kanye namasu okukhiqiza athuthukile ukuze adizayine isakhiwo esithuthukisiwe sokushisa sama-capacitor. Lokhu kuqinisekisa ukusebenza okuzinzile ngisho nasezindaweni zokushisa okuphezulu, ukuvimbela ukuwohloka kwenani le-capacitor noma ukwehluleka ngenxa yokukhuphuka kwezinga lokushisa. Ngaphezu kwalokho, lawa ma-capacitor anesikhathi eside sokuphila, enikeza ukwesekwa okuthembekile kwamasistimu kagesi kagesi.
Okwesithathu, ama-capacitor ochungechunge lwe-MDP kanye ne-MDR avela ku-YMIN afaka usayizi omncane kanye nokuminyana kwamandla okuphezulu. Isibonelo, kumasistimu okushayela kagesi angu-800V, ukuthambekela ukusebenzisa amadivayisi e-SiC ukunciphisa usayizi wama-capacitor nezinye izingxenye ze-passive, ngaleyo ndlela kuthuthukiswe ukwenziwa okuncane kwezilawuli ze-elekthronikhi. I-YMIN isebenzise ubuchwepheshe bokukhiqiza amafilimu obusha, obungagcini nje ngokukhuphula ukuhlanganiswa kohlelo lonke nokusebenza kahle kodwa futhi kunciphisa usayizi wesistimu nesisindo, okuthuthukisa ukuphatheka nokuguquguquka kwamadivayisi.
Sekukonke, uchungechunge lwe-YMIN lwe-DC-Link lwefilimu lwe-capacitor lunikeza ukuthuthuka okungama-30% kukhono lokumelana ne-dv/dt kanye nokwenyuka okungu-30% kwesikhathi sokuphila uma kuqhathaniswa namanye ama-capacitor amafilimu emakethe. Lokhu akuhlinzeki nje ukwethembeka okungcono kwamasekethe e-SiC/IGBT kodwa futhi kunikeza izindleko ezingcono, ukunqoba izithiyo zamanani ekusetshenzisweni okubanzi kwama-capacitor amafilimu.
Njengengqalabutho yemboni, i-YMIN ibambe iqhaza ngokujulile emkhakheni we-capacitor iminyaka engaphezu kwengu-20. Ama-capacitor ayo anamandla kagesi aphezulu asetshenziswe ngokuzinza ezindaweni ezisezingeni eliphezulu njenge-onboard OBC, inqwaba yokushaja amandla amasha, ama-photovoltaic inverters, namarobhothi ezimboni iminyaka eminingi. Lesi sizukulwane esisha semikhiqizo ye-film capacitor sixazulula izinselele ezihlukahlukene ekulawuleni inqubo yokukhiqiza ifilimu kanye nemishini, sesiqedile isitifiketi sokuthembeka namabhizinisi omhlaba ahamba phambili, futhi sazuza isicelo esikhulu, okufakazela ukwethembeka komkhiqizo kumakhasimende amakhulu. Ngokuzayo, i-YMIN izosebenzisa ukuqoqwa kwayo kobuchwepheshe besikhathi eside ukuze isekele ukuthuthukiswa okusheshayo kwemboni yamandla entsha ngemikhiqizo ye-capacitor ethembeke kakhulu futhi engabizi kakhulu.
Ukuze uthole ulwazi olwengeziwe, sicela uvakashelewww.ymin.cn.
Isikhathi sokuthumela: Jul-07-2024