I-DC Capacitors kwii-Photovoltaic Inverters-Wuxi CRE New Energy Technology Co., Ltd.

Ukuveliswa kwamandla eSolar photovoltaic kuya kudlala indima ebalulekileyo ekusebenziseni amandla ehlabathi kwixesha elizayo elikufutshane, kungekhona nje ukubuyisela imithombo yamandla eqhelekileyo, kodwa nokuba ngumthombo oyintloko wokunikezelwa kwamandla ehlabathi.

Ii-inverters ze-Photovoltaic ziziguquli eziguqula amandla ombane e-DC aveliswa yi-photovoltaic (PV) iiphaneli zelanga zibe yi-utility frequency alternating current (AC), enokubuyiselwa kwisixokelelwano sothumelo lwezorhwebo okanye isetyenziswe kwi-off-grid system.Kuba ii-inverters zisetyenziswa ngokubanzi kwimeko yangaphandle kwaye zifuna ukusebenza okuthembekileyo kwexesha elide kunye nokulungiswa okuncinci, abasebenzisi bokuphela kunye nabayili banomgangatho ongqongqo kunye neemfuno zokuthembeka kumacandelo asetyenziswa kwezi zixhobo.Njengomthwali kunye nenkxaso kwinkqubo yokuguqulwa kwamandla, ii-capacitors zefilimu zidlala indima ebalulekileyo kuzo zonke iinkalo ze-photovoltaic inverters.Ukuba azikhethwanga ngokufanelekileyo, ziya kuba nefuthe elibulalayo ekuzinzeni nasekuphileni kwezixhobo.

Ukusetyenziswa kwisekethe ye-inverter, nceda ujonge kumzekelo wesicelo kulo mzobo ungezantsi:

Indima ye-DC-link capacitor:

1) Kwisekethe ye-inverter, i-voltage ye-output ye-rectifier iphuculwe kakhulu kwaye ihluzwe;

2) Funxa i-high-amplitude pulsating current ecelwe yi-inverter esuka kwi-"DC-Link", ithintele ekuveliseni i-high-amplitude pulsating voltage kwi-impedance ye "DC-Link", kwaye ugcine ukuguquguquka kwamandla ombane kwibhasi ye-DC ngaphakathi umda woluhlu oluvumelekileyo;

3) Thintela i-voltage overshoot kunye nokugqithisa okwethutyana kwe-"DC-Link" ekuchaphazeni i-IGBT.

Ke ngoko, iimfuno ze-capacitors:

1) Qinisekisa ngokwaneleyo ukumelana nombane

2) Ukukwazi okwaneleyo

I-3) Ikhono elaneleyo langoku, i-ESR ephantsi kangangoko kunokwenzeka

4) Kufuneka iimpawu ezintle zefrikhwensi, i-ESL ephantsi kangangoko kunokwenzeka

5) Yanelisa ubushushu obuphezulu bangaphandle kunye nemeko yesicelo sokufuma

I-Wuxi CRE New Energy Technology Co., Ltd. sele igxile ekusetyenzisweni kwefilimu capacitors kumandla ombane ixesha elide.Ijolise kwimeko yesicelo esiqatha kwii-inverters ze-photovoltaic, ngokusekelwe kwi-CRE ye-DC-exhaswa yi-teknoloji yefilimu yokumelana ne-high-resistance, ithatha ilahleko ephantsi, i-Polypropylene Dielectric ekwazi ukumelana nobushushu obuphezulu iye yaqulunqa kwaye yaphuhlisa uthotho lwee-capacitors zefilimu ezinobushushu obuphezulu kunye nomswakama ophezulu. ukumelana, i-ESR ephantsi (isizukulwana esisezantsi sokushisa), ukuthembeka okuphezulu kunye nobomi obude.

Phakathi kwazo, iimpawu zokusebenza ze-DMJ-PS DC capacitor yebhasi zezi zilandelayo: