Site na mmụba nke nsogbu ike, ike ọgwụgwụ akụrụngwa na mmetọ ikuku, China ewepụtala ụgbọ ala ume ọhụrụ dị ka ụlọ ọrụ na-emepụta atụmatụ.Dịka akụkụ dị mkpa nke ụgbọ ala eletrik, chaja ụgbọ ala nwere ma uru nyocha nyocha yana uru ngwa injinia dị mkpa.FIG.1 na-egosi eserese ihe owuwu ngọngọ nke chaja ụgbọ na nchikota nke ihu STAGE AC/DC na azụ ogbo DC/DC.
Mgbe ejikọrọ chaja ụgbọ ala na grid ọkụ, ọ ga-emepụta ụfọdụ harmonics, mebie grid ike, ma na-emetụta nkwụsi ike nke ngwa eletriki.Iji kpachapụ ọnụ ọgụgụ nke harmonics, International Electrotechnical Commission mepụtara ụkpụrụ nkwekọrịta iec61000-3-2 maka ngwa eletriki, China nyekwara ọkọlọtọ mba GB/T17625.Iji na-agbaso ụkpụrụ ndị a dị n'elu, chaja nọ n'elu osisi ga-enwerịrị mgbazi ike ihe kpatara ya (PFC).PFC AC/DC ntụgharị na-enye ike n'azụ DC/DC usoro n'otu aka, na inyeaka ike n'aka nke ọzọ.Nhazi nke ihe ntụgharị PFC AC/DC na-emetụta ọrụ chaja ụgbọ ala ozugbo.
N'ihi olu na nkwekọ nke chaja ụgbọ ala eletrik dị ọcha nwere ihe siri ike chọrọ, imewe a na-eji teknụzụ mgbazi ike na-arụ ọrụ (APFC).APFC nwere ụdị topologies dị iche iche.The Boost topology nwere uru nke sekit ịnya ụgbọ ala dị mfe, uru PF dị elu na mgbawa njikwa pụrụ iche, yabụ ahọpụtara isi sekit nke Boost topology.N'ịtụle usoro nchịkwa isi dị iche iche, nkezi usoro njikwa ugbu a nwere uru nke mgbagwoju anya dị ala, enweghị mmetụta na mkpọtụ na oge ngbanwe a na-ahọrọ.
Isiokwu a na-elele ike nke 2 kW niile-eletriki ụgbọ ala chaja, na-atụle ihe harmonic ọdịnaya, olu na mgbochi jamming imewe imewe chọrọ, isi nnyocha PFC AC / DC Ntụgharị, nwere usoro isi sekit na njikwa sekit imewe, na na ndabere nke ọmụmụ, na ọmụmụ nke usoro simulation na nnwale ule nyochaa
2 PFC AC / DC ihe ntụgharị isi sekit imewe
Isi sekit nke PFC AC / DC ntụgharị bụ nke nrụpụta ihe nzacha ihe nzacha, ngwaọrụ ịgbanwee, inductor na-abawanye na ihe ndị ọzọ, na-emebere paramita ya dị ka ndị a.
2.1 Ike nzacha mmepụta
The mmepụta filter capacitor nwere ike yochaa mpụta voltaji ripple nke mgbanwe omume na-ejigide voltaji mmepụta na a ụfọdụ nso.Ngwaọrụ ahọpụtara kwesịrị ịghọta nke ọma ọrụ abụọ dị n'elu.
The akara sekit nakweere okpukpu abụọ mechiri emechi-loop Ọdịdị: mpụta akaghị bụ voltaji akaghị na n'ime akaghị bụ ugbu a akaghị.Loop dị ugbu a na-achịkwa ntinye nke ugbu a nke sekit isi wee na-eso ihe ntụnye aka ugbu a iji nweta mgbazi ihe ikike.A na-atụnyere voltaji mmepụta nke mgbanaka voltaji na volta akwụkwọ ntinye aka site na mgbapụ njehie voltaji.A na-agbakọ akara ngosi mmepụta, voltaji na-enyefe na ntinye ntinye aka site na onye na-ebuwanye ibu iji nweta ntinye ntinye aka ugbu a nke loop dị ugbu a.Site n'ịgbanwegharị akaghị ugbu a, a na-emepụta mgbaàmà ịnya ụgbọ ala nke isi ihe mgba ọkụ sekit iji nweta mmezi ihe na-akpata ike nke usoro ahụ ma mepụta voltaji DC kwụsiri ike.A na-eji ọtụtụ ihe eme ihe maka mmụba mgbaàmà.N'ebe a, akwụkwọ a na-elekwasị anya na nhazi nke loop voltaji na loop dị ugbu a.
Oge nzipu: Jun-20-2022