Ịnyịnya dị mma kwesịrị inwe ezigbo oche! Iji jiri uru nke ngwaọrụ SiC mee ihe nke ọma, ọ dịkwa mkpa ijikọ sistemụ sekit na capacitors kwesịrị ekwesị. Site na njikwa draịva isi na ụgbọala eletrik ruo na ọnọdụ ike ọhụrụ dị elu dị ka inverters fotovoltaic, capacitors fim na-aghọ ihe a na-ahụkarị, ahịa na-achọkwa ngwa ngwa ngwaahịa ndị dị ọnụ ala.
N'oge na-adịbeghị anya, Shanghai Yongming Electronic Co., Ltd. wepụtara ihe nkwado DC film capacitors, nke nwere uru anọ pụrụ iche nke na-eme ka ha dabara adaba maka ọgbọ nke asaa nke Infineon IGBTs. Ha na-enyekwa aka idozi nsogbu nke nkwụsi ike, ntụkwasị obi, obere mmezi, na ọnụ ahịa na sistemụ SiC.
Ihe mkpuchi ihe nkiri na-enweta ihe fọrọ nke nta ka ọ bụrụ 90% ntinye na ngwa draịva isi. Gịnị mere SiC na IGBT ji achọ ha?
N'afọ ndị na-adịbeghị anya, site na mmepe ngwa ngwa nke ụlọ ọrụ ike ọhụrụ dịka nchekwa ike, chaja, na ụgbọ ala eletrik (EVs), ọchịchọ maka capacitors DC-Link amụbaala ngwa ngwa. N'ikwu ya n'ụzọ dị mfe, capacitors DC-Link na-arụ ọrụ dị ka ihe nchekwa na sekit, na-amịkọrọ oke ọkụ eletrik dị elu site na njedebe bọs ma na-eme ka voltaji bọs dị nro, si otú a na-echebe swiitị IGBT na SiC MOSFET site na oke ọkụ eletrik dị elu na mmetụta voltaji oge.
A na-ejikarị aluminom electrolytic capacitors eme ihe n'ọrụ nkwado DC. Agbanyeghị, ebe voltaji bọs nke ụgbọala ike ọhụrụ na-abawanye site na 400V ruo 800V na sistemụ fotovoltaic na-aga n'ihu na 1500V na ọbụna 2000V, ọchịchọ maka capacitors fim na-arị elu nke ukwuu.
Data gosiri na na 2022, ikike arụnyere nke inverters draịvụ eletriki dabere na DC-Link film capacitors ruru nde 5.1117, nke ruru 88.7% nke ngụkọta ikike arụnyere nke njikwa eletrọnịkị. Ụlọ ọrụ njikwa eletrọnịkị ndị a ma ama dịka Fudi Power, Tesla, Inovance Technology, Nidec, na Wiran Power niile na-eji DC-Link film capacitors na draịvụ inverters ha, yana ngụkọta ikike arụnyere nke ruru 82.9%. Nke a na-egosi na capacitors fim anọchiela electrolytic capacitors dị ka isi ihe dị na ahịa draịvụ eletrik.
Nke a bụ n'ihi na ike kachasị elu nke ike eletriki nke aluminom bụ ihe dịka 630V. N'ime oke voltaji na ike dị elu karịa 700V, a chọrọ ka ejikọta ọtụtụ ike eletriki n'usoro na n'otu oge iji mezuo ihe achọrọ maka ojiji, nke na-eweta mfu ike ọzọ, ọnụ ahịa BOM, na nsogbu ntụkwasị obi.
Akwụkwọ nyocha sitere na Mahadum Malaysia na-egosi na a na-ejikarị capacitors electrolytic eme ihe na njikọ DC nke silicon IGBT half-bridge inverters, mana voltaji surges nwere ike ime n'ihi nnukwu nguzogide usoro (ESR) nke capacitors electrolytic. Ma e jiri ya tụnyere ngwọta IGBT nke dabeere na silicon, SiC MOSFETs nwere ugboro mgbanwe dị elu, na-ebute oke voltaji surges dị elu na njikọ DC nke inverters half-bridge. Nke a nwere ike ibute mmebi arụmọrụ ngwaọrụ ma ọ bụ ọbụna mmebi, ebe ọ bụ na ugboro resonant nke capacitors electrolytic bụ naanị 4kHz, ezughi oke iji nabata ripple nke SiC MOSFET inverters ugbu a.
Ya mere, na ngwa DC nwere ihe achọrọ maka ntụkwasị obi dị elu, dịka inverters draịva eletriki na inverters photovoltaic, a na-ahọrọkarị capacitors fim. Ma e jiri ya tụnyere aluminom electrolytic capacitors, uru arụmọrụ ha gụnyere iguzogide voltaji dị elu, obere ESR, enweghị polarity, arụmọrụ kwụsiri ike, na ogologo ndụ, na-eme ka imewe sistemụ a pụrụ ịtụkwasị obi karịa yana iguzogide ripple siri ike.
Ọzọkwa, iji ihe mkpuchi ihe nkiri na sistemụ ahụ nwere ike iji ugboro ugboro mee ihe dị elu, nke na-ebelata obere mfu nke SiC MOSFETs, na-ebelata nha na ibu nke ihe ndị na-adịghị arụ ọrụ (inductors, transformers, capacitors) na sistemụ ahụ nke ukwuu. Dịka nnyocha Wolfspeed si kwuo, ihe mkpuchi IGBT nke dabeere na silicon 10kW chọrọ capacitors electrolytic aluminom 22, ebe ihe mkpuchi SiC 40kW chọrọ naanị capacitors fim 8, nke na-ebelata mpaghara PCB nke ukwuu.
YMIN ewepụtala ihe ndị na-eme ka ihe nkiri nwee ike ịrụ ọrụ nke ọma, nke nwere uru anọ dị mkpa iji kwado ụlọ ọrụ ike ọhụrụ.
Iji gboo mkpa ahịa dị mkpa, YMIN ewepụtala usoro MDP na MDR nke DC na-akwado ihe nkiri capacitors. Site na iji usoro mmepụta dị elu na ihe ndị dị elu, capacitors ndị a dabara nke ọma na ihe achọrọ maka ọrụ nke SiC MOSFETs na IGBTs dabere na silicon sitere n'aka ndị isi semiconductor ike ụwa dịka Infineon.
Ihe mkpuchi ihe nkiri nke YMIN nke MDP na MDR nwere ọtụtụ ihe ndị a ma ama: obere iguzogide usoro nhata (ESR), voltaji dị elu, obere mmiri ozuzo, na ọnọdụ okpomọkụ dị elu.
Nke mbụ, ihe mkpuchi ihe nkiri YMIN nwere obere nhazi ESR, na-ebelata nrụgide voltaji nke ọma n'oge mgbanwe nke SiC MOSFETs na IGBTs dabere na silicon, si otú a na-ebelata mfu capacitor ma na-eme ka arụmọrụ sistemụ zuru oke ka mma. Na mgbakwunye, capacitors ndị a nwere voltaji dị elu, nke nwere ike iguzogide ọnọdụ voltaji dị elu ma hụ na sistemụ ahụ kwụsiri ike.
Usoro MDP na MDR nke YMIN film capacitors na-enye oke ike nke 5uF-150uF na 50uF-3000uF, yana oke ike nke 350V-1500V na 350V-2200V, n'otu n'otu.
Nke abụọ, ihe mkpuchi ihe nkiri kachasị ọhụrụ nke YMIN nwere obere mmiri na-agbapụta na ọnọdụ okpomọkụ dị elu. N'ihe gbasara sistemụ njikwa eletrọniki nke ụgbọala eletrik, nke na-enwekarị ike dị elu, mmepụta okpomọkụ nke na-esi na ya apụta nwere ike imetụta ndụ na ntụkwasị obi nke ihe mkpuchi ihe nkiri nke ukwuu. Iji dozie nke a, usoro MDP na MDR sitere na YMIN na-etinye ihe dị elu na usoro mmepụta dị elu iji chepụta usoro okpomọkụ ka mma maka ihe mkpuchi. Nke a na-eme ka arụmọrụ kwụsiri ike ọbụlagodi na gburugburu okpomọkụ dị elu, na-egbochi mmebi uru ihe mkpuchi ma ọ bụ ọdịda n'ihi mmụba okpomọkụ. Ọzọkwa, ihe mkpuchi ndị a nwere ogologo ndụ, na-enye nkwado a pụrụ ịdabere na ya maka sistemụ eletrọniki ike.
Nke atọ, ihe nkwado MDP na MDR sitere na YMIN nwere obere nha na njupụta ike dị elu. Dịka ọmụmaatụ, na sistemụ draịva eletriki 800V, usoro a na-emekarị bụ iji ngwaọrụ SiC belata nha nke capacitors na ihe ndị ọzọ na-adịghị arụ ọrụ, si otú a na-akwalite obere njikwa eletrọnịkị. YMIN ejirila teknụzụ mmepụta ihe nkiri ọhụrụ, nke na-eme ka njikọta na arụmọrụ sistemụ niile dịkwuo elu kamakwa ọ na-ebelata nha na ibu sistemụ ahụ, na-eme ka ngwa ngwa na mgbanwe nke ngwaọrụ dịkwuo mma.
N'ozuzu, usoro ihe nkiri DC-Link nke YMIN na-enye mmụba 30% na ikike iguzogide dv/dt yana mmụba 30% na ndụ ma e jiri ya tụnyere ihe mkpuchi ihe nkiri ndị ọzọ dị n'ahịa. Nke a abụghị naanị na ọ na-enye ntụkwasị obi ka mma maka sekit SiC/IGBT kamakwa ọ na-enye uru ka mma, na-emeri ihe mgbochi ọnụahịa na ojiji zuru oke nke ihe mkpuchi ihe nkiri.
Dịka onye ọsụ ụzọ n'ọrụ mmepụta ihe, YMIN etinyela aka nke ukwuu n'ọrụ mmepụta ihe ike ruo ihe karịrị afọ 20. Ejirila ike eletrik dị elu ya mee ihe nke ọma n'ọrụ mmepụta ihe ike dị elu dịka OBC n'ime ụgbọ mmiri, ikpo ọkụ ike ọhụrụ, inverters fotovoltaic, na robot ụlọ ọrụ mmepụta ihe ruo ọtụtụ afọ. Ọgbọ ọhụrụ a nke ngwaahịa ihe nkiri na-edozi nsogbu dị iche iche na njikwa usoro mmepụta ihe nkiri na akụrụngwa, emechara asambodo ntụkwasị obi site na ụlọ ọrụ ụwa niile, ma nweta ngwa buru ibu, na-egosi ntụkwasị obi ngwaahịa ahụ nye ndị ahịa buru ibu. N'ọdịnihu, YMIN ga-eji mkpokọta teknụzụ ya ogologo oge iji kwado mmepe ngwa ngwa nke ụlọ ọrụ ike ọhụrụ yana ngwaahịa ihe ike dị elu na ọnụ ahịa dị ọnụ ala.
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Oge ozi: Julaị-07-2024