Ii-DC Capacitors kwii-Photovoltaic Inverters

Ukuveliswa kwamandla elanga nge-photovoltaic kuza kudlala indima ebalulekileyo ekusetyenzisweni kwamandla ehlabathini kungekudala, kungekuphela nje ukuze kuthathelwe indawo eminye imithombo yamandla eqhelekileyo, kodwa nokuba ngumthombo ophambili wobonelelo lwamandla kwihlabathi.

Ii-inverters ze-Photovoltaic zii-inverters eziguqula i-voltage ye-DC eguquguqukayo eveliswa ziiphaneli zelanga ze-photovoltaic (PV) zibe yi-utility frequency alternating current (AC), enokubuyiselwa kwinkqubo yothumelo lwezorhwebo okanye isetyenziswe kwinkqubo engekho kwigridi. Ekubeni ii-inverters zihlala zisetyenziswa kwimeko yangaphandle kwaye zifuna ukusebenza okuthembekileyo ixesha elide kunye nokugcinwa okuncinci, abasebenzisi bokugqibela kunye nabayili baneemfuno ezingqongqo kakhulu zomgangatho kunye nokuthembeka kwezinto ezisetyenziswa kwezi zixhobo. Njengenkampani ethwala kunye nenkxaso kwinkqubo yokuguqula amandla, ii-capacitors zefilimu zidlala indima ebalulekileyo kuzo zonke iinkalo zee-inverters ze-photovoltaic. Ukuba azikhethwanga ngokufanelekileyo, ziya kuba nefuthe elibi kuzinzo kunye nobomi bezixhobo.

Ukuze isetyenziswe kwisekethe ye-inverter, nceda ujonge umzekelo wesicelo kumfanekiso ongezantsi:

Indima ye-capacitor ye-DC-link:

1) Kwisekethe ye-inverter, i-voltage yokukhupha ye-rectifier ilungiswa kwaye ihluzwe kakhulu;

2) Funxa umsinga we-pulsating onee-amplitude eziphezulu ocelwe yi-inverter evela kwi-"DC-Link", uthintele ekuveliseni i-voltage ye-pulsating ephezulu ene-amplitude kwi-impedance ye-"DC-Link", kwaye ugcine ukuguquguquka kwe-voltage kwibhasi ye-DC ngaphakathi kobubanzi obuvumelekileyo;

3) Ukuthintela ukugqithiswa kwevolthi kunye nokugqithiswa kwevolthi okudlulayo kwe-"DC-Link" ekuchaphazeleni i-IGBT.

Ke ngoko, iimfuno ze-capacitors:

1) Qinisekisa ukuba i-voltage iyamelana ngokwaneleyo

2) Umthamo owaneleyo

3) Amandla ombane aneleyo, i-ESR ephantsi kangangoko kunokwenzeka

4) Kufuneka ube neempawu ezilungileyo zefrikhwensi, i-ESL ephantsi kangangoko kunokwenzeka

5) Yanelisa ubushushu obuphezulu obuqatha bangaphandle kunye nemeko yokusetyenziswa komswakama ophezulu

I-Wuxi CRE New Energy Technology Co., Ltd. ibisoloko igxile ekusetyenzisweni kwee-capacitors zefilimu kwii-electronics zamandla ixesha elide. Ijolise kwimeko enzima yokusetyenziswa kwii-inverters ze-photovoltaic, ngokusekelwe kubuchwepheshe befilimu obuxhathisayo obuxhaswa yi-DC ye-CRE, isebenzisa i-Polypropylene Dielectric elahlekelwa kancinci, enganyangekiyo kubushushu obuphezulu, iyile kwaye yaphuhlisa uthotho lwee-capacitors zefilimu ezinobushushu obuphezulu kunye nokumelana nokufuma okuphezulu, i-ESR ephantsi (ukuveliswa kobushushu obuphantsi), ukuthembeka okuphezulu kunye nobomi obude.

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