Inductance nigice cyingenzi cyumuriro wa DC / DC. Hariho ibintu byinshi ugomba gusuzuma muguhitamo inductor, nkigiciro cyinduction, DCR, ingano, hamwe nubwuzure. Ibiranga kwiyuzuzamo inductors akenshi ntibisobanutse kandi bitera ibibazo. Uru rupapuro ruzaganira ku buryo inductance igera ku kwiyuzuzamo, uko kwiyuzuza bigira ingaruka ku muzunguruko, nuburyo bwo kumenya kwiyuzuzamo.
Kwuzuza Inductance bitera
Ubwa mbere, usobanukirwe neza kwiyuzuzamo inductance icyo aricyo, nkuko bigaragara ku gishushanyo 1:
Igishushanyo 1
Turabizi ko mugihe umuyoboro unyuze muri coil mumashusho 1, coil izabyara umurima wa magneti;
Imikorere ya magnetiki izakoreshwa munsi yumurimo wa magneti, kandi imbere ya magnetiki imbere bizunguruka buhoro.
Iyo imbaraga za magnetique zimaze gukwega rwose, icyerekezo cya domaine ya magneti byose ni kimwe numurima wa rukuruzi, kabone niyo umurima wa magneti wo hanze wiyongereye, intangangabo ya magneti ntigira imbaraga za rukuruzi zishobora kuzunguruka, kandi inductance yinjira mubintu byuzuye. .
Duhereye ku bundi buryo, mu murongo wa magnetisiyonike werekanye ku gishushanyo cya 2, isano iri hagati ya magnetiki flux density B nimbaraga za magnetique imbaraga H ihura na formula iburyo mumashusho 2:
Iyo ubwinshi bwa magnetiki flux bugeze kuri Bm, ubwinshi bwa magnetiki flux ntibuba bwiyongera cyane hamwe no kwiyongera kwingufu za magneti, kandi inductance igera kubwuzuye.
Duhereye ku isano iri hagati ya inductance na permeability µ, dushobora kubona:
Iyo inductance yuzuye, µm izagabanuka cyane, kandi amaherezo inductance izagabanuka cyane kandi ubushobozi bwo guhagarika ibyuka bizabura.
Igishushanyo 2
Inama zo kumenya kwiyuzuzamo inductance
Hoba hariho inama zo gusuzuma ubwuzure bwa inductance mubikorwa bifatika?
Irashobora gukusanyirizwa mubice bibiri byingenzi: kubara theoretique no kugerageza ubushakashatsi.
☆Kubara theoretique birashobora gutangirira kumurongo ntarengwa wa magnetiki flux nubunini bwa inductance nini.
☆Ikizamini cyubushakashatsi cyibanda cyane cyane kumurongo wubuhinduzi hamwe nubundi buryo bwambere bwo guca imanza.
Ubu buryo bwasobanuwe hano hepfo.
Kubara ubwinshi bwa magnetiki flux
Ubu buryo burakwiriye mugushushanya inductance ukoresheje ingirabuzimafatizo. Ibipimo byingenzi birimo magnetiki yumuzingi uburebure le, ahantu heza Ae nibindi. Ubwoko bwa magnetique nabwo bugena urwego rukuruzi ya magneti, kandi ibikoresho bya magneti bitanga ingingo zijyanye no gutakaza ingirabuzimafatizo hamwe nubunini bwuzuye bwa magnetiki.
Hamwe nibi bikoresho, turashobora kubara ubwinshi bwa magnetiki flux yubucucike dukurikije uko igishushanyo mbonera kibaye, kuburyo bukurikira:
Mubimenyerezo, kubara birashobora koroshya, ukoresheje ui aho gukoresha ur; Hanyuma, ugereranije nubwinshi bwuzuye bwibintu bya magneti, dushobora kumenya niba inductance yagenewe ifite ibyago byo kwiyuzuzamo.
Kubara impinduramatwara ntarengwa
Ubu buryo burakwiriye gushushanya umuzenguruko ukoresheje inductors zirangiye.
Ibice bitandukanye byumuzingi bifite formulaire zitandukanye zo kubara inductance igezweho.
Fata Buck chip MP2145 nkurugero, irashobora kubarwa ukurikije formula ikurikira, kandi ibisubizo bibarwa birashobora kugereranwa nagaciro kerekana induction kugirango umenye niba inductance izaba yuzuye.
Ukurikije imiterere ya inductive
Ubu buryo kandi nuburyo busanzwe kandi bufatika mubikorwa byubwubatsi.
Dufashe MP2145 nkurugero, igikoresho cyo kwigana MPSmart gikoreshwa mukwigana. Uhereye ku buryo bwo kwigana, birashobora kugaragara ko iyo inductor ituzuye, umuyoboro wa inductor ni umuraba wa mpandeshatu ufite umusozi runaka. Iyo inductor yuzuye, imiterere yumurongo wa inductor izaba ifite kugoreka kugaragara, biterwa no kugabanuka kwa inductance nyuma yo kwiyuzuzamo.
Mubikorwa byubwubatsi, dushobora kureba niba hariho kugoreka imiterere ya inductance yimikorere ishingiye kuri ibi kugirango tumenye niba inductance yuzuye.
Hasi ni igipimo cyapimwe kumurongo wa MP2145 Demo. Birashobora kugaragara ko hariho kugoreka kugaragara nyuma yo kwiyuzuzamo, ibyo bikaba bihuye nibisubizo byigana.
Gupima niba inductance yashyutswe bidasanzwe kandi wumve ifirimbi idasanzwe
Hariho ibihe byinshi mubikorwa byubwubatsi, ntidushobora kumenya ubwoko bwibanze bwibanze, biragoye kumenya ingano yuzuye ya inductance, kandi rimwe na rimwe ntibyoroshye kugerageza inductance current; Muri iki gihe, turashobora kandi kumenya mbere na mbere niba kwiyuzuzamo kwabaye mugupima niba inductance ifite ubushyuhe budasanzwe, cyangwa kumva niba hari induru idasanzwe.
Inama nke zo kumenya kwiyuzuzamo inductance zatangijwe hano. Ndizera ko byafashije.
Igihe cyo kohereza: Nyakanga-07-2023
