Mu inverter yachikhalidwe ndi converter, ma capacitors mabasi ndi electrolytic capacitors, koma mwatsopano, ma capacitors a filimu amasankhidwa, ubwino wa filimuyi ndi chiyani poyerekeza ndi electrolytic capacitors?

Pakadali pano, ochulukirachulukira apakati komanso ma inverters azingwe akusankha ma capacitor amafilimu pazifukwa izi:

(1) Ma capacitor amakanema amatha kupirira ma voltage apamwamba kuposa ma electrolytic capacitors.Oveteredwa voteji a zitsulo zotayidwa electrolytic capacitors ndi m'munsi, mpaka 450 V. Kupeza apamwamba voteji kupirira mlingo, iwo kawirikawiri ayenera kugwiritsidwa ntchito mndandanda, ndi vuto la voteji equalization ayenera kuganiziridwa mu ndondomeko kugwirizana mndandanda.Mosiyana, ma capacitors filimu akhoza kufika ku 20KV, kotero palibe chifukwa choganizira mndandanda kugwirizana mu sing'anga ndi mkulu voteji inverter ntchito, ndipo ndithudi, palibe chifukwa kuganizira mavuto kugwirizana monga voteji equalization ndi lolingana mtengo ndi ogwira ntchito.

(2) Ma capacitor amakanema amakhala ndi kutentha kwambiri kuposa ma electrolytic capacitors.

(3) Nthawi ya moyo wa filimu capacitor ndi yaitali kuposa electrolytic capacitor.Nthawi zambiri, nthawi yamoyo wa electrolytic capacitor ndi 2,000H, koma moyo wa CRE film capacitor ndi 100,000H.

(4) ESR ndi yaying'ono kwambiri.ESR ya filimu capacitor nthawi zambiri imakhala yotsika kwambiri, nthawi zambiri imakhala pansi pa 1mΩ, ndipo inductance ya parasitic imakhalanso yotsika kwambiri, makumi ochepa chabe a nH, omwe sangafanane ndi aluminiyamu electrolytic capacitors.ESR yotsika kwambiri imachepetsa kupsinjika kwamagetsi pa chubu chosinthira, chomwe chimapindulitsa kudalirika komanso kukhazikika kwa chubu chosinthira.

(5) Wamphamvu ripple panopa resistance.The ripple panopa kukana kwa metalized film capacitors kungakhale khumi mpaka kangapo kangapo kwa oveteredwa ripple panopa a aluminiyamu electrolytic capacitors wa mphamvu yomweyo.Kuti akwaniritse kukana kwamakono, ma aluminiyamu electrolytic capacitors nthawi zambiri amagwiritsa ntchito mphamvu zazikulu kuti akwaniritse zofunikira, pomwe mphamvu yayikulu ndikuwononga ndalama zosafunikira komanso malo oyika.