High PFC yoyendetsedwa ndi magetsi osinthira

PFC ndiye tanthawuzo la kuwongolera mphamvu, komwe kumagwiritsidwa ntchito makamaka kuwonetsa kagwiritsidwe ntchito ka mphamvu yamagetsi ndi zinthu zamagetsi.Kuchuluka kwa mphamvu yamagetsi, kumapangitsanso mphamvu yogwiritsira ntchito mphamvu yamagetsi.

Pali mitundu iwiri ya PFC: passive PFC ndi PFC yogwira.Passive PFC nthawi zambiri imagwiritsa ntchito njira yolipirira inductance kuti muchepetse kusiyana pakati pa mphamvu yapano ndi mphamvu yamagetsi ya AC kuti ipititse patsogolo mphamvu yamagetsi, koma mphamvu ya PFC yongokhala siyokwera kwambiri ndipo imatha kufikira 0.7 ~ 0.8;Active PFC imapangidwa ndi inductance, capacitance ndi zida zamagetsi, imatha kufikira 0.99.Ndi yaying'ono ndipo imatha kukhala ndi mphamvu zambiri, koma mtengo wake ndi wokwera kuposa wa PFC yongokhala.

PFC imagwiritsidwa ntchito nthawi zambiri ngati magetsi omwe amagwira ntchito pa PC, ndipo PFC ili ndi izi:

1) Mphamvu yolowera imatha kukhala kuchokera ku 90V mpaka 270V;

2) Mphamvu ya mzere ndi yoposa 0.98, ndipo ili ndi ubwino wochepa wotayika komanso wodalirika kwambiri;

3) PFC ya IC itha kugwiritsidwanso ntchito ngati magetsi othandizira, chifukwa chake chosinthira choyimilira nthawi zambiri sichifunikira kugwiritsa ntchito dera logwira la PFC;

4) Kutulutsa sikusinthasintha ndi magetsi olowera, kotero kuti mphamvu yotulutsa yokhazikika imatha kupezeka;

5) Mphamvu yamagetsi ya DC yotulutsa ya PFC yogwira ndi yaying'ono kwambiri ndipo imapereka mafunde a sine ya 100Hz / 120Hz (kuwirikiza kawiri mphamvu).Chifukwa chake, magetsi omwe amagwiritsa ntchito PFC yogwira safunikira kugwiritsa ntchito capacitor yayikulu.

Active PFC imapangidwa ndi inductance, capacitance ndi zida zamagetsi.Ili ndi voliyumu yaying'ono.Imasinthira mawonekedwe amakono kudzera pa IC yapadera kuti abwezere kusiyana kwa gawo pakati papano ndi magetsi.Active PFC imatha kukwaniritsa mphamvu yayikulu - nthawi zambiri kuposa 98%, koma mtengo wake ndi wokwera.Kuphatikiza apo, PFC yogwira imatha kugwiritsidwanso ntchito ngati magetsi othandizira.Chifukwa chake, pakugwiritsa ntchito chigawo chogwira cha PFC, chosinthira choyimilira nthawi zambiri sichifunikira, ndipo kutulutsa kwamagetsi a DC a PFC yogwira kumakhala kochepa kwambiri.Mphamvu iyi sifunikira kugwiritsa ntchito capacitor yayikulu yosefera.

Posachedwa tayambitsa magetsi a 2000W ndi 3000W ndi PFC.Mtengo wake ndiwopindulitsa kwambiri.Ndiwotsika mtengo kwambiri kuposa magetsi omwewo pamsika, ndipo ntchitoyo ndi yokhazikika kwambiri.Ngati mukufuna, chonde titumizireni.Zikomo!