Dzuwa photovoltaic mphamvu m'badwo adzakhala mbali yofunika kwambiri padziko lapansi mphamvu mowa posachedwapa, osati m'malo magwero ena ochiritsira mphamvu, komanso kukhala gwero lalikulu la dziko kotunga mphamvu.
Ma Photovoltaic inverters ndi ma inverters omwe amasintha ma voliyumu a DC opangidwa ndi ma solar a photovoltaic (PV) kukhala ma frequency alternating current (AC), omwe amatha kubwezeredwa munjira yotumizira malonda kapena kugwiritsidwa ntchito mu gridi yakunja.Popeza ma inverters nthawi zambiri amagwiritsidwa ntchito panja ndipo amafuna kugwira ntchito modalirika kwa nthawi yayitali komanso kusamalidwa pang'ono, ogwiritsa ntchito kumapeto ndi opanga amakhala ndi zofunikira zolimba komanso zodalirika pazida zomwe zimagwiritsidwa ntchito pazidazi.Monga chonyamulira ndi chithandizo mu njira yosinthira mphamvu, ma capacitors a filimu amagwira ntchito yofunika kwambiri pazochitika zonse za photovoltaic inverters.Ngati sanasankhidwe bwino, adzakhala ndi zotsatira zoopsa pa kukhazikika ndi moyo wa zida.
Kuti mugwiritse ntchito inverter circuit, chonde onani chitsanzo cha ntchito pachithunzi pansipa:
Ntchito ya DC-link capacitor:
1) Mu gawo la inverter, voteji yotulutsa chowongolera imasinthidwa ndikusefedwa;
2) Yatsani mphamvu yothamanga kwambiri yomwe yafunsidwa ndi inverter kuchokera ku "DC-Link", itetezeni kuti isapange voteji yamphamvu kwambiri pa "DC-Link", ndikusunga kusinthasintha kwamagetsi pabasi ya DC mkati mwa malo ovomerezeka amtundu;
3) Pewani kuphulika kwamagetsi ndi kuwonjezereka kwapang'onopang'ono kwa "DC-Link" kuti zisakhudze IGBT.
Chifukwa chake, zofunikira za ma capacitors:
1) Onetsetsani kuti magetsi akukwanira mokwanira
2) Mphamvu zokwanira
3) Kukwanira kokwanira pakali pano, ESR yotsika momwe ndingathere
4) Amafunika mawonekedwe abwino pafupipafupi, otsika ESL momwe angathere
5) Kukhutitsani kutentha kwakunja kwakunja komanso kutentha kwakukulu kogwiritsa ntchito
Wuxi CRE New Energy Technology Co., Ltd. yakhala ikuyang'ana kwambiri pakugwiritsa ntchito ma capacitor amakanema mumagetsi amagetsi kwanthawi yayitali.Poyang'ana pazovuta zogwiritsira ntchito ma inverters a photovoltaic, kutengera luso lamakono la mafilimu lothandizira kwambiri la DC la CRE, limagwiritsa ntchito Polypropylene Dielectric yotsika kwambiri, yosagwira kutentha kwambiri, yapanga ndikupanga ma capacitor angapo okhala ndi kutentha kwambiri komanso chinyezi chambiri. kukana, kutsika kwa ESR (m'badwo wotsika kutentha), kudalirika kwakukulu komanso moyo wautali.
Zina mwazo, mawonekedwe a DMJ-PS DC bus capacitor ndi awa:
Kutentha kwakukulu kogwira ntchito: 105 °C (chovala chapulasitiki)
Gulu la Nyengo (IEC 60068-1:2013): 40/105/56
Dielectric: Polypropylene (MKP)
Bokosi lapulasitiki (UL 94 V-0)
Kusindikiza utomoni (UL 94 V-0)
Capacitance value max.200μF
Mphamvu yamagetsi 300V ~ 2000VDC
Kuchita bwino kodzichiritsa, kukana kwa overvoltage, kukana kwakukulu kwapano komanso kutayika kochepa
Kukana malo otentha ndi chinyezi (85 ℃/85% RH 1000h), kudalirika kwambiri, moyo wautali wautumiki
Tsatirani RoHS ndikukwaniritsa zofunikira zamagalimoto amtundu wa AEC-Q200