amakuru

MuriPFC ihindura ibikoresho, guhinduranya amashanyarazi kugenga amashanyarazi nigice cyingenzi cyane.Imikorere yo gutanga amashanyarazi muri PFC ntaho itandukaniye cyane nogutanga amashanyarazi asanzwe, ariko hariho itandukaniro mumashanyarazi.Amashanyarazi asanzwe atanga amashanyarazi bisaba 220V ikosora amashanyarazi, mugihe amashanyarazi ya PFC akoreshwa na B + PFC.

Nyuma yo gukosorwa, nta kayunguruzo kayunguruwe kongerwamo, kandi amashanyarazi adahinduwe neza ya voltage yumurongo wa cycle ikoreshwa nkumuriro w'amashanyarazi.Kubera ko voltage nziza ya chopper “yaciwe” muburyo bugezweho, ibiranga imiterere ni:
1. Imiterere yumurongo wubu ntigihagarikwa, kandi ibahasha yayo ni kimwe na voltage yumurongo wa voltage, kandi icyiciro cy ibahasha hamwe na voltage yumurongo ni kimwe.
2. Bitewe n'ingaruka zo gutema, igice cya kabiri cya DC imbaraga ziba inshuro nyinshi (byemejwe no gukata inshuro, hafi 100khz) imbaraga za "AC".Izi mbaraga nyinshi cyane "AC" zigomba kongera gukosorwa mbere yuko zishobora kugengwa na PWM ihindura ikoreshwa rya Power.
3. Urebye muri rusange kubitanga amashanyarazi yo hanze, sisitemu yamashanyarazi igera kungufu za AC hamwe numuyoboro wa AC biri mubyiciro kandi voltage na flim ya flake bihuye na sinusoidal waveform, bidakemura gusa ikibazo cyindishyi ziterwa ningufu, ariko kandi ikemura ibibazo byo guhuza amashanyarazi na electronique.

Imbaraga-nini cyane "guhinduranya amashanyarazi" ikosorwa na diode ikosora hanyuma ikayungurura mumashanyarazi ataziguye hanyuma igahabwa amashanyarazi ya PWM yakurikiyeho.Iyi voltage ya DC nayo yitwa B + PFC.Umuvuduko wa B + PFC na chopper muri rusange urenze + 300V nyuma yumwimerere 220 AC ikosora no kuyungurura.Impamvu nuko umurongo wa voltage mwinshi watoranijwe, umurongo wa diameter ya inductor ni nto, naho umurongo wa voltage ugabanuka nto.Ubushobozi bwa filteri ya capacitor ni nto, kandi ingaruka zo kuyungurura nibyiza, kandi haribyiza byinshi nkibisabwa bike kubishobora kumanuka PWM ya tube.

Kugeza ubu, muri PFC ihindura amashanyarazi, igice cya chopper ikora nka switch ifite uburyo bubiri bwo gukora:
1. Uburyo bukomeza bwo gutwara (CCM): Inshuro yimikorere yumurongo uhinduranya uhoraho, kandi inshingano yinshingano yo gutwara irahinduka hamwe na amplitude yumuriro wa voltage.
2. Uburyo bwo gutwara ibintu bidahagarara (DCM): Inshuro yimikorere ya chopper switch tube ihinduka hamwe nubunini bwa voltage yo gutema.

UwitekaPFC ihindura amashanyaraziigice hamwe nigice gishimishije cya PWM ihinduranya amashanyarazi mugice cyo gukosora amashanyarazi gukosora amashanyarazi byose birangizwa numuzunguruko uhuriweho, kandi IC imwe irashobora kurangiza igishushanyo.