Ihe mkpuchi ihe nkiri na-enyere teknụzụ SiC na IGBT aka ịga n'ihu ngwa ngwa: ngwọta ngwa capacitor YMIN

N'afọ ndị na-adịbeghị anya, mmepe na-aga n'ihu nke ụlọ ọrụ ike ọhụrụ dịka nchekwa fotovoltaic na ụgbọ ala eletrik (EV) emeela ka ọchịchọ maka capacitors DC-Link dịkwuo elu. Na nkenke, capacitors DC-Link na-arụ ọrụ dị mkpa na sekit ahụ. Ha nwere ike ịmịkọrọ oke ọkụ eletrik na njedebe bọs ma mee ka voltaji bọs dị nro, na-eme ka a hụ na a na-echebe swiitị IGBT na SiC MOSFET pụọ na mmetụta ọjọọ nke oke ọkụ eletrik na voltaji oge ọrụ.

Ka voltaji bọs nke ụgbọala ike ọhụrụ na-abawanye site na 400V ruo 800V, ọchịchọ maka capacitors fim amụbaala nke ukwuu. Dịka data si kwuo, ikike arụnyere nke inverters draịvụ eletriki dabere na capacitors DC-Link thin-film ruru 5.1117 nde set na 2022, nke ruru 88.7% nke ikike arụnyere nke njikwa eletriki. Inverters draịvụ nke ọtụtụ ụlọ ọrụ njikwa eletrik na-eduga dịka Tesla na Nidec niile na-eji capacitors fim DC-Link, nke na-aza 82.9% nke ikike arụnyere ma aghọọla nhọrọ kachasị na ahịa draịvụ eletriki.

Akwụkwọ nyocha na-egosi na na silicon IGBT half-bridge inverters, a na-ejikarị electrolytic capacitors ọdịnala na njikọ DC, mana voltaji ga-eme n'ihi nnukwu ESR nke electrolytic capacitors. Ma e jiri ya tụnyere ngwọta IGBT nke dabeere na silicon, SiC MOSFETs nwere ugboro mgbanwe dị elu, yabụ oke voltaji na njikọ DC nke half-bridge inverter dị elu, nke nwere ike ibute mmebi arụmọrụ ngwaọrụ ma ọ bụ ọbụna mmebi, na ugboro resonant nke electrolytic capacitors bụ naanị 4kHz, nke ezughị iji nabata ripple nke SiC MOSFET inverters ugbu a.

Ya mere, na ngwa DC dịka inverters draịva eletriki na inverters photovoltaic nwere ihe achọrọ ntụkwasị obi dị elu,ihe mkpuchi ihe nkiriA na-ahọrọkarị ha. Ma e jiri ya tụnyere aluminom electrolytic capacitors, uru arụmọrụ ha bụ iguzogide voltaji dị elu, obere ESR, enweghị polarity, arụmọrụ kwụsiri ike, na ndụ dị ogologo, si otú a na-enweta iguzogide ripple siri ike na nhazi sistemụ a pụrụ ịtụkwasị obi karịa.

Sistemụ ndị na-eji ihe mkpuchi dị gịrịgịrị nwere ike iji ohere dị elu na obere mfu nke SiC MOSFETs mee ihe ma belata nha na ibu nke ihe ndị na-adịghị arụ ọrụ. Nnyocha Wolfspeed na-egosi na ihe mkpuchi IGBT nke dabere na silicon 10kW chọrọ ihe mkpuchi electrolytic aluminom 22, ebe ihe mkpuchi SiC nke 40kW chọrọ naanị ihe mkpuchi dị gịrịgịrị 8, ebe mpaghara PCB ahụ na-ebelatakwa nke ukwuu.

Iji zaa ajụjụ maka ọchịchọ ahịa, YMIN Electronics webatara yaUsoro MDP nke capacitors ihe nkiri, nke na-eji teknụzụ dị elu na ihe dị elu iji mee ka ọ dabara na SiC MOSFET na IGBT nke dabeere na silicon. Ndị na-enye ike MDP nwere obere ESR, voltaji dị elu, obere mmiri na-agbapụta na oke okpomọkụ.

Uru nke ngwaahịa YMIN Electronics' ihe nkiri capacitor:

Nhazi ihe nkiri YMIN Electronics na-eji echiche ESR dị ala iji belata nrụgide voltaji na mfu ike n'oge mgbanwe ma melite arụmọrụ ike sistemụ. O nwere voltaji dị elu, na-agbanwe agbanwe na gburugburu voltaji dị elu, ma na-ahụ na sistemụ kwụsiri ike.

Ike MDP usoro nwere oke ikike nke 1uF-500uF na oke voltaji nke 500V ruo 1500V. Ha nwere obere mmiri na-agbapụta na oke okpomọkụ dị elu. Site na ihe dị elu na usoro dị elu, a na-eme nhazi mkpofu okpomọkụ dị irè iji hụ na arụmọrụ kwụsiri ike na oke okpomọkụ, na-agbatị ndụ ọrụ, ma na-enye nkwado a pụrụ ịdabere na ya maka sistemụ eletrọniki ike. N'otu oge ahụ,Kapasitọ usoro MDPHa dị obere nha, ha dị elu na njupụta ike, ma na-eji usoro mmepụta ihe dị gịrịgịrị ọhụrụ iji melite njikọta na arụmọrụ sistemụ, belata nha na ibu, ma mụbaa ibugharị na mgbanwe ngwa.

Usoro ihe nkiri YMIN Electronics DC-Link nwere mmụba 30% na ndidi dv/dt yana mmụba 30% na ndụ ọrụ, nke na-eme ka ntụkwasị obi nke sekit SiC/IGBT ka mma, na-eweta arụmọrụ ka mma na ọnụ ahịa, ma na-edozi nsogbu ọnụahịa.