I-Solar photovoltaic power generation izodlala indima ebalulekile ekusetshenzisweni kwamandla emhlabeni esikhathini esizayo esiseduze, hhayi nje ukufaka esikhundleni semithombo ethile evamile yamandla, kodwa futhi ibe umthombo oyinhloko wokuphakelwa kwamandla emhlabeni.
Ama-Photovoltaic inverters ama-inverter aguqula amandla kagesi e-DC aguquguqukayo akhiqizwe amaphaneli elanga e-photovoltaic (PV) abe ama-utility frequency alternating current (AC), angabuyiselwa ohlelweni lokudlulisela ezentengiselwano noma asetshenziswe ohlelweni olungaphandle kwegridi.Njengoba ama-inverter ngokuvamile esetshenziswa esimweni sangaphandle futhi adinga ukusebenza okuthembekile kwesikhathi eside kanye nokunakekelwa okuncane, abasebenzisi bokugcina nabaklami banekhwalithi eqinile kakhulu nezimfuneko zokwethembeka zezingxenye ezisetshenziswa kulawa madivayisi.Njengomuntu ophethe kanye nokwesekwa kwenqubo yokuguqulwa kwamandla, ama-capacitor wefilimu adlala indima ebalulekile kuzo zonke izici ze-photovoltaic inverters.Uma zingakhethiwe kahle, zizoba nomthelela omubi ekuzinzeni nasekuphileni kwezinto zokusebenza.
Ukuze usebenzise i-inverter circuit, sicela ubheke isibonelo sohlelo lokusebenza esithombeni esingezansi:
Indima ye-DC-link capacitor:
1) Kumjikelezo we-inverter, i-voltage ephumayo ye-rectifier ikakhulukazi ibushelelezi futhi ihlungiwe;
2) Gcoba i-high-amplitude pulsating current ecelwe isiguquli esisuka ku-"DC-Link", ivimbele ekukhiqizeni i-high-amplitude pulsating voltage ku-impedance ye "DC-Link", futhi ugcine ukushintshashintsha kwamandla kagesi ebhasini le-DC ngaphakathi ububanzi obuvumelekile;
3) Vimbela i-voltage overshoot kanye ne-overvoltage yesikhashana ye-"DC-Link" ekuthinteni i-IGBT.
Ngakho-ke, izidingo zama-capacitors:
1) Qinisekisa ukumelana ne-voltage eyanele
2) Amandla okwanele
3) Ikhono elanele lamanje, i-ESR ephansi ngangokunokwenzeka
4) Kudingeka izici ezinhle zemvamisa, i-ESL ephansi ngangokunokwenzeka
5) Ukwanelisa ukushisa okuphezulu kwangaphandle okuqinile kanye nesimo sesicelo somswakama ophezulu
I-Wuxi CRE New Energy Technology Co., Ltd. ibigxile ekusetshenzisweni kwama-capacitor amafilimu kugesi wamandla isikhathi eside.Ihlose isimo esinzima sohlelo lokusebenza kuma-inverters e-photovoltaic, ngokusekelwe kubuchwepheshe befilimu obuqinile obusekelwa yi-CRE's DC, yamukela ukulahlekelwa okuphansi, ukumelana nokushisa okuphezulu kwe-Polypropylene Dielectric iklame futhi yathuthukisa uchungechunge lwama-capacitor amafilimu anezinga lokushisa eliphezulu kanye nomswakama ophezulu. ukumelana, i-ESR ephansi (isizukulwane sokushisa esiphansi), ukwethembeka okuphezulu nokuphila isikhathi eside.
Phakathi kwazo, izici zokusebenza ze-DMJ-PS DC bus capacitor zimi kanje:
Izinga lokushisa eliphezulu lokusebenza: 105 °C (ikesi lepulasitiki)
Isigaba sesimo sezulu (IEC 60068-1:2013): 40/105/56
I-Dielectric: I-Polypropylene (MKP)
Ibhokisi lepulasitiki (UL 94 V-0)
Ukuvalwa kwe-Resin (UL 94 V-0)
Inani lamandla ubuningi.200μF
Ibanga lamandla kagesi 300V ~ 2000VDC
Ukusebenza okuhle kokuziphilisa, ukumelana ne-overvoltage, ukumelana okuphezulu kwamanje nokulahlekelwa okuphansi
Ukumelana nemvelo eshisayo nenomswakama (85℃/85%RH 1000h), ukwethembeka okuphezulu, impilo ende yesevisi
Ukuthobela i-RoHS futhi uhlangabezane nezidingo zebanga lezimoto i-AEC-Q200