Mu inverter ndi converter yachikhalidwe, ma capacitor a basi ndi ma capacitor a electrolytic, koma m'ma capacitor atsopano, ma capacitor a filimu amasankhidwa, kodi ubwino wa ma capacitor a filimu ndi wotani poyerekeza ndi ma capacitor a electrolytic?

Pakadali pano, ma inverter ambiri okhala pakati komanso a zingwe akusankha ma capacitor amafilimu pazifukwa zotsatirazi:

(1) Ma capacitor a filimu amatha kukhala ndi mphamvu yolimba kwambiri kuposa ma capacitor a electrolytic. Mphamvu yolimba ya ma capacitor a aluminiyamu ndi yotsika, mpaka 450 V. Kuti apeze mphamvu yolimba kwambiri, nthawi zambiri amafunika kugwiritsidwa ntchito motsatizana, ndipo vuto la equalization ya voltage liyenera kuganiziridwa polumikizana motsatizana. Mosiyana ndi zimenezi, ma capacitor a filimu amatha kufika pa 20KV, kotero palibe chifukwa choganizira za kulumikizana motsatizana mu ma inverter apakati ndi okwera, ndipo ndithudi, palibe chifukwa choganizira za mavuto olumikizirana monga equalization ya voltage ndi mtengo wofanana ndi anthu ogwira ntchito.

(2) Ma capacitor a filimu ali ndi kukana kutentha kwambiri kuposa ma capacitor a electrolytic.

(3) Nthawi ya moyo wa capacitor wa filimu ndi yayitali kuposa capacitor wa electrolytic. Kawirikawiri, nthawi ya moyo wa capacitor wa electrolytic ndi 2,000H, koma nthawi ya moyo wa capacitor wa filimu wa CRE ndi 100,000H.

(4) ESR ndi yaying'ono kwambiri. ESR ya capacitor ya filimu nthawi zambiri imakhala yotsika kwambiri, nthawi zambiri imakhala pansi pa 1mΩ, ndipo kulowetsedwa kwa parasitic nakonso kumakhala kotsika kwambiri, ndi makumi ochepa chabe a nH, zomwe sizingafanane ndi ma capacitor a aluminium electrolytic. ESR yotsika kwambiri imachepetsa kupsinjika kwa magetsi pa chubu chosinthira, zomwe zimathandiza kudalirika ndi kukhazikika kwa chubu chosinthira.

(5) Kukana kwamphamvu kwa ripple current. Kukana kwa ripple current kwa ma capacitor opanga mafilimu achitsulo kungakhale nthawi khumi mpaka khumi ndi ziwiri kuposa ripple current yovomerezeka ya ma capacitor a aluminiyamu electrolytic omwe ali ndi mphamvu yomweyo. Kuti akwaniritse kukana kwamphamvu kwa current, ma capacitor a aluminiyamu electrolytic nthawi zambiri amagwiritsa ntchito mphamvu yayikulu kuti akwaniritse zofunikira, pomwe mphamvu yayikulu ndi kutaya ndalama zosafunikira komanso malo oyika.