Ma Capacitor a DC mu Photovoltaic Inverters - Wuxi CRE New Energy Technology Co., Ltd.

Kupanga mphamvu zamagetsi pogwiritsa ntchito mphamvu ya dzuwa kudzathandiza kwambiri pakugwiritsa ntchito mphamvu padziko lonse posachedwa, osati kungosintha mphamvu zina zachikhalidwe, komanso kukhala gwero lalikulu la mphamvu padziko lonse lapansi.

Ma inverter a Photovoltaic ndi ma inverter omwe amasintha magetsi a DC osinthika opangidwa ndi ma solar panels a photovoltaic (PV) kukhala ma utility frequency alternating current (AC), omwe amatha kubwezeretsedwa ku system yotumizira ma transmission kapena kugwiritsidwa ntchito mu off-grid system. Popeza ma inverter nthawi zambiri amagwiritsidwa ntchito panja ndipo amafunika kugwira ntchito yodalirika kwa nthawi yayitali komanso kusamaliridwa pang'ono, ogwiritsa ntchito ndi opanga ali ndi zofunikira zolimba kwambiri pa khalidwe ndi kudalirika kwa zida zomwe zimagwiritsidwa ntchito muzipangizozi. Monga chonyamulira ndi chithandizo pakutembenuza mphamvu, ma capacitor amafilimu amachita gawo lofunikira kwambiri pazinthu zonse za ma inverter a photovoltaic. Ngati sanasankhidwe bwino, adzakhala ndi zotsatira zoopsa pa kukhazikika ndi moyo wa zida.

Kuti mugwiritse ntchito mu inverter circuit, chonde onani chitsanzo cha ntchito chomwe chili pachithunzi pansipa:

Udindo wa DC-link capacitor:

1) Mu gawo la inverter, mphamvu yotulutsa ya rectifier imakonzedwa bwino ndikusefedwa;

2) Yamwani mphamvu yamagetsi yamphamvu kwambiri yomwe imapemphedwa ndi inverter kuchokera ku "DC-Link", kuti isapange mphamvu yamagetsi yamphamvu kwambiri pa impedance ya "DC-Link", ndikusunga kusinthasintha kwa magetsi pa basi ya DC mkati mwa malire ololedwa;

3) Kuletsa kupitirira kwa mphamvu yamagetsi ndi kupitirira kwa mphamvu kwa "DC-Link" kuti kusakhudze IGBT.

Chifukwa chake, zofunikira za ma capacitor:

1) Onetsetsani kuti mphamvu yamagetsi yokwanira yolimbana ndi vuto

2) Kukwanira kwa capacitance

3) Mphamvu yokwanira yamagetsi ochulukirapo, ESR yotsika momwe zingathere

4) Mukufuna mawonekedwe abwino a pafupipafupi, ESL yotsika momwe mungathere

5) Kukwaniritsa kutentha kwapamwamba kwakunja komanso chinyezi chambiri chomwe chimagwiritsidwa ntchito

Kampani ya Wuxi CRE New Energy Technology Co., Ltd. yakhala ikuyang'ana kwambiri pakugwiritsa ntchito ma capacitor a filimu mu zamagetsi zamagetsi kwa nthawi yayitali. Pofuna kugwiritsa ntchito bwino ma inverter a photovoltaic, kutengera ukadaulo wa CRE wothandizidwa ndi DC, imagwiritsa ntchito Polypropylene Dielectric yotsika mtengo komanso yosatentha kwambiri yapanga ndikupanga ma capacitor angapo a mafilimu okhala ndi kutentha kwambiri komanso chinyezi chambiri, ESR yochepa (kupanga kutentha kochepa), kudalirika kwambiri komanso moyo wautali.

Pakati pawo, makhalidwe a ntchito ya capacitor ya basi ya DMJ-PS DC ndi awa: