Ihhashi elihle lifanelwe isihlalo esihle! Ukuze kusetshenziswe ngokugcwele izinzuzo zamadivayisi e-SiC, kuyadingeka futhi ukuhlanganisa uhlelo lwesekethe nama-capacitor afanele. Kusukela ekulawuleni okuyinhloko kwezimoto zikagesi kuya ezimweni zamandla amasha ezinamandla aphezulu njenge-inverters ye-photovoltaic, ama-capacitor efilimu aya ngokuya ethandwa kakhulu, futhi imakethe idinga ngokushesha imikhiqizo esebenza kahle kakhulu.
Muva nje, iShanghai Yongming Electronic Co., Ltd. yethule ama-capacitor efilimu asekelayo e-DC, anezinzuzo ezine ezivelele ezenza afanelekele ama-IGBT esizukulwane sesikhombisa se-Infineon. Aphinde asize ekubhekaneni nezinselele zokuzinza, ukuthembeka, ukwenziwa kube lula, kanye nezindleko ezinhlelweni ze-SiC.
Ama-capacitor efilimu afinyelela cishe ku-90% ekungeneni kwezinhlelo zokusebenza ze-main drive. Kungani i-SiC ne-IGBT ziwadinga?
Eminyakeni yamuva nje, ngentuthuko esheshayo yezimboni ezintsha zamandla ezifana nokugcina amandla, ukushaja, kanye nezimoto zikagesi (ama-EV), isidingo sama-capacitor e-DC-Link besilokhu sikhula ngokushesha. Kalula nje, ama-capacitor e-DC-Link asebenza njengama-buffer kumasekethe, emunca ama-pulse currents aphezulu avela ekugcineni kwebhasi futhi eshelela i-voltage yebhasi, ngaleyo ndlela evikela ama-switch e-IGBT kanye ne-SiC MOSFET kuma-pulse currents aphezulu kanye nemithelela ye-voltage yesikhashana.
Ngokuvamile, ama-capacitor e-aluminium electrolytic asetshenziswa ezinhlelweni zokusekela ze-DC. Kodwa-ke, njengoba i-voltage yebhasi yezimoto ezintsha zamandla ikhuphuka isuka ku-400V iye ku-800V kanye nezinhlelo ze-photovoltaic eziya ku-1500V ngisho naku-2000V, isidingo sama-capacitor efilimu sikhula kakhulu.
Idatha ikhombisa ukuthi ngo-2022, amandla afakiwe ama-inverter okushayela kagesi asekelwe kuma-capacitor efilimu e-DC-Link afinyelele amayunithi ayizigidi ezingu-5.1117, okwenza u-88.7% wamandla aphelele afakiwe ezilawuli ze-elekthronikhi. Izinkampani zokulawula ze-elekthronikhi ezihamba phambili njenge-Fudi Power, i-Tesla, i-Inovance Technology, i-Nidec, kanye ne-Wiran Power zonke zisebenzisa ama-capacitor efilimu e-DC-Link kuma-inverter azo okushayela, ngesilinganiso samandla ahlanganisiwe afakiwe afinyelela ku-82.9%. Lokhu kubonisa ukuthi ama-capacitor efilimu athathe indawo yama-capacitor e-electrolytic njengezinto eziyinhloko emakethe yokushayela kagesi.
Lokhu kungenxa yokuthi ukumelana okuphezulu kwamandla kagesi kwama-capacitor e-aluminium electrolytic cishe kungama-630V. Ezisetshenzisweni ze-voltage ephezulu namandla aphezulu angaphezu kwama-700V, ama-capacitor amaningi e-electrolytic kudingeka axhunywe ngokulandelana nangokuhambisana ukuze kuhlangatshezwane nezidingo zokusetshenziswa, okuletha ukulahlekelwa kwamandla okwengeziwe, izindleko ze-BOM, kanye nezinkinga zokuthembeka.
Iphepha locwaningo elivela eNyuvesi yaseMalaysia libonisa ukuthi ama-capacitor e-electrolytic avame ukusetshenziswa kusixhumanisi se-DC sama-inverter e-silicon IGBT half-bridge, kodwa ukwanda kwamandla kagesi kungenzeka ngenxa yokumelana okuphezulu kochungechunge olulinganayo (ESR) kwama-capacitor e-electrolytic. Uma kuqhathaniswa nezixazululo ze-IGBT ezisekelwe ku-silicon, ama-SiC MOSFET anemvamisa yokushintsha ephezulu, okuholela ekukhuleni kwamandla kagesi aphezulu kusixhumanisi se-DC sama-inverter e-half-bridge. Lokhu kungaholela ekuwohlokeni kokusebenza kwedivayisi noma ngisho nomonakalo, njengoba imvamisa ye-resonant yama-capacitor e-electrolytic ingu-4kHz kuphela, enganele ukumunca i-ripple yamanje yama-inverter e-SiC MOSFET.
Ngakho-ke, kuzinhlelo zokusebenza ze-DC ezinezidingo zokuthembeka okuphezulu, njenge-electric drive inverters kanye ne-photovoltaic inverters, ama-capacitor efilimu avame ukukhethwa. Uma kuqhathaniswa nama-capacitor e-aluminium electrolytic, izinzuzo zawo zokusebenza zifaka phakathi ukumelana ne-voltage ephezulu, i-ESR ephansi, ukungabikho kwe-polarity, ukusebenza okuzinzile, kanye nokuphila isikhathi eside, okuvumela ukwakheka kwesistimu okuthembekile kakhulu ngokumelana ne-ripple okunamandla.
Ngaphezu kwalokho, ukusebenzisa ama-capacitor efilimu ohlelweni kungasebenzisa ngokuphindaphindiwe izinzuzo ze-SiC MOSFET ezivame kakhulu, ezilahlekelwa kancane, okunciphisa kakhulu usayizi nesisindo sezingxenye ezingasebenzi (ama-inductor, ama-transformer, ama-capacitor) ohlelweni. Ngokusho kocwaningo lwe-Wolfspeed, i-inverter ye-IGBT esuselwe ku-silicon engu-10kW idinga ama-capacitor e-aluminium angu-22, kanti i-inverter ye-SiC engu-40kW idinga ama-capacitor efilimu angu-8 kuphela, okunciphisa kakhulu indawo ye-PCB.
I-YMIN Yethula Ama-Capacitor Amasha Amafilimu Anezinzuzo Ezine Ezinkulu Zokusekela Imboni Yamandla Amasha
Ukuze kuxazululwe izidingo eziphuthumayo zemakethe, i-YMIN isanda kwethula uchungechunge lwe-MDP kanye ne-MDR lwama-capacitor amafilimu asekelayo e-DC. Isebenzisa izinqubo zokukhiqiza ezithuthukisiwe kanye nezinto ezisezingeni eliphezulu, la ma-capacitor ahambisana ngokuphelele nezidingo zokusebenza zama-SiC MOSFET kanye nama-IGBT asekelwe ku-silicon avela kubaholi be-semiconductor yamandla omhlaba wonke njenge-Infineon.
Ama-capacitor efilimu ochungechunge lwe-MDP ne-MDR e-YMIN anezici eziningana eziphawulekayo: ukumelana nochungechunge olulinganayo oluphansi (i-ESR), i-voltage ephezulu, ukuvuza okuphansi, kanye nokuqina kokushisa okuphezulu.
Okokuqala, ama-capacitor efilimu e-YMIN anomklamo ophansi we-ESR, okunciphisa ngempumelelo ukucindezeleka kwamandla kagesi ngesikhathi sokushintsha ama-SiC MOSFET nama-IGBT asekelwe ku-silicon, ngaleyo ndlela kunciphisa ukulahleka kwama-capacitor futhi kuthuthukise ukusebenza kahle kwesistimu iyonke. Ngaphezu kwalokho, la ma-capacitor ane-voltage ekalwe kakhulu, ekwazi ukumelana nezimo zama-voltage aphezulu nokuqinisekisa ukusebenza kwesistimu okuzinzile.
Uchungechunge lwe-MDP kanye ne-MDR lwama-capacitor efilimu i-YMIN lunikeza ububanzi be-capacitance obungu-5uF-150uF kanye no-50uF-3000uF, kanye nobubanzi be-voltage obungu-350V-1500V kanye no-350V-2200V, ngokulandelana.
Okwesibili, ama-capacitor akamuva efilimu e-YMIN anokuvuza okuphansi kanye nokuqina kokushisa okuphezulu. Endabeni yezinhlelo zokulawula ze-elekthronikhi zezimoto zikagesi, ezivame ukuba namandla aphezulu, ukukhiqizwa kokushisa okubangelwayo kungathinta kakhulu isikhathi sokuphila kanye nokuthembeka kwama-capacitor amafilimu. Ukuze kulungiswe lokhu, uchungechunge lwe-MDP kanye ne-MDR oluvela ku-YMIN luhlanganisa izinto ezisezingeni eliphezulu kanye namasu okukhiqiza athuthukile ukuklama isakhiwo sokushisa esithuthukisiwe sama-capacitor. Lokhu kuqinisekisa ukusebenza okuzinzile ngisho nasezindaweni ezishisa kakhulu, ukuvimbela ukwehla kwenani le-capacitor noma ukwehluleka ngenxa yokwenyuka kokushisa. Ngaphezu kwalokho, la ma-capacitor anempilo ende, ahlinzeka ngokusekelwa okuthembekile kakhulu kwezinhlelo ze-elekthronikhi zamandla.
Okwesithathu, ama-capacitor ochungechunge lwe-MDP kanye ne-MDR avela ku-YMIN anosayizi omncane kanye nobuningi bamandla aphezulu. Isibonelo, ezinhlelweni zokushayela kagesi ezingama-800V, umkhuba uwukusebenzisa amadivayisi e-SiC ukunciphisa usayizi wama-capacitor nezinye izingxenye ezingasebenzi, ngaleyo ndlela kukhuthazwe ukwenziwa kube lula kwezilawuli ze-elekthronikhi. I-YMIN isebenzise ubuchwepheshe obusha bokukhiqiza amafilimu, obungagcini nje ngokwandisa ukuhlanganiswa nokusebenza kahle kwesistimu iyonke kodwa futhi bunciphisa usayizi nesisindo sesistimu, buthuthukisa ukuphatheka kanye nokuguquguquka kwamadivayisi.
Sekukonke, uchungechunge lwe-DC-Link film capacitor lwe-YMIN lunikeza ukuthuthuka okungu-30% kumandla okumelana ne-dv/dt kanye nokwenyuka okungu-30% esikhathini sokuphila uma kuqhathaniswa namanye ama-capacitor efilimu emakethe. Lokhu akugcini nje ngokuhlinzeka ngokuthembeka okungcono kwezifunda ze-SiC/IGBT kodwa futhi kunikeza ukusebenza kahle kwezindleko, kunqobe izithiyo zamanani ekusetshenzisweni okubanzi kwama-capacitor efilimu.
Njengomqalisi wemboni, i-YMIN ibilokhu ihileleke kakhulu emkhakheni we-capacitor iminyaka engaphezu kwengu-20. Ama-capacitor ayo aphezulu asetshenziswe ngokuzinzile emikhakheni ephezulu njenge-OBC engaphakathi, ama-pile amasha okushaja amandla, ama-inverter e-photovoltaic, namarobhothi ezimboni iminyaka eminingi. Lesi sizukulwane esisha semikhiqizo ye-capacitor yamafilimu sixazulula izinselele ezahlukahlukene ekulawulweni kwenqubo yokukhiqizwa kwe-capacitor yamafilimu kanye nemishini, siqede isitifiketi sokuthembeka namabhizinisi omhlaba ahamba phambili, futhi sifinyelele ukusetshenziswa okukhulu, okufakazela ukuthembeka komkhiqizo kumakhasimende amakhulu. Esikhathini esizayo, i-YMIN izosebenzisa ukuqongelela kwayo kobuchwepheshe besikhathi eside ukusekela intuthuko esheshayo yemboni entsha yamandla ngemikhiqizo ye-capacitor ethembekile kakhulu nengabizi kakhulu.
Ukuze uthole ulwazi olwengeziwe, sicela uvakashelewww.ymin.cn.
Isikhathi sokuthunyelwe: Julayi-07-2024