Ingufu zikoreshwa mu guhinduranya ingufu zigenzurwa na PFC nyinshi

PFC ni ibisobanuro byo gukosora ibintu by'amashanyarazi, bikoreshwa cyane cyane mu kugaragaza uburyo ingufu z'amashanyarazi zikoreshwa neza n'ibikoresho by'ikoranabuhanga. Uko ingufu z'amashanyarazi ziba nyinshi, ni ko ingufu z'amashanyarazi zikoreshwa neza kurushaho.

Hari ubwoko bubiri bwa PFC: passive PFC na active PFC. Muri rusange, Passive PFC ikoresha uburyo bwo kwishyura inductance kugira ngo igabanye itandukaniro riri hagati y’umuyoboro w’amashanyarazi n’amashanyarazi y’inyongera ya AC kugira ngo yongere ingufu, ariko power factor ya passive PFC ntabwo iri hejuru cyane kandi ishobora kugera kuri 0.7 ~ 0.8 gusa; Active PFC igizwe n’inductance, capacitance n’ibice by’ikoranabuhanga, ishobora kugera kuri 0.99. Ni nto kandi ishobora kugera kuri power factor nyinshi, ariko ikiguzi kiri hejuru kurusha icya passive PFC.

PFC ikunze gukoreshwa nk'amashanyarazi akoreshwa muri mudasobwa, kandi PFC ifite nibura ibi bikurikira:

1) Voltage yinjiye ishobora kuva kuri 90V kugeza kuri 270V;

2) Ingufu z'umurongo zirenze 0.98, kandi zifite ibyiza byo gutakaza bike no kwizera cyane;

3) PFC ya IC ishobora kandi gukoreshwa nk'amashanyarazi y'inyongera, bityo transformer ihoraho ntabwo ikenewe mu gukoresha circuit ya PFC ikora;

4) Umusaruro ntuhindagurika bitewe n'umuvuduko w'amashanyarazi winjira, bityo umuvuduko uhoraho cyane urashobora kuboneka;

5) Ingufu za DC voltage ripple za active PFC ni nto cyane kandi zigaragaza umuraba wa sine wa 100Hz / 120Hz (inshuro ebyiri z'umuvuduko w'ingufu). Kubwibyo, amashanyarazi akoresha active PFC ntakenera gukoresha capacitor nini y'icyuma gishyushya.

Active PFC igizwe n'ibice by'amashanyarazi bitanga inductance, capacitance n'ibikoresho by'ikoranabuhanga. Ifite ingano nto. Ihindura imiterere y'amashanyarazi binyuze muri IC yihariye kugira ngo ihuze itandukaniro riri hagati y'amashanyarazi n'amashanyarazi. Active PFC ishobora kugera ku ngufu nyinshi - akenshi irenga 98%, ariko igiciro nacyo kiri hejuru. Byongeye kandi, active PFC ishobora no gukoreshwa nk'amashanyarazi y'inyongera. Kubwibyo, mu gukoresha imikorere ya active PFC, transformer ihoraho ntabwo ikenewe, kandi umuvuduko w'amashanyarazi ya DC ya active PFC ni muto cyane. Iyi power supply ntabwo ikenera gukoresha capacitor nini ya filter.

Duherutse gutangiza amashanyarazi ya 2000W na 3000W hamwe na PFC. Igiciro ni cyiza cyane. Ni gito cyane ugereranije n'amashanyarazi amwe ari ku isoko, kandi imikorere irahamye cyane. Niba ubyifuza, twandikire. Murakoze!