Kwi-inverter kunye ne-converter yendabuko, ii-capacitors zebhasi zii-capacitors ze-electrolytic, kodwa kwezintsha, kukhethwa ii-capacitors zefilimu, zeziphi izibonelelo zee-capacitors zefilimu xa kuthelekiswa nee-capacitors ze-electrolytic?

Okwangoku, ii-inverters ezininzi ezikwi-centralized kunye nee-string zikhetha ii-capacitors zefilimu ngenxa yezi zizathu zilandelayo:

(1) Ii-capacitor zefilimu zinokufikelela kwi-voltage ephezulu yokumelana ne-voltage kunee-capacitor ze-electrolytic. I-voltage elinganisiweyo yee-capacitor ze-aluminium electrolytic iphantsi, ukuya kuthi ga kwi-450 V. Ukuze ufumane inqanaba eliphezulu lokumelana ne-voltage, zihlala zifuna ukusetyenziswa kwi-series, kwaye ingxaki ye-voltage equalization kufuneka iqwalaselwe kwinkqubo yoqhagamshelo lwe-series. Ngokwahlukileyo koko, ii-capacitor zefilimu zinokufikelela kwi-20KV, ngoko ke akukho mfuneko yokuqwalasela uqhagamshelo lwe-series kwizicelo ze-inverter ze-voltage ephakathi nephezulu, kwaye ewe, akukho mfuneko yokuqwalasela iingxaki zoqhagamshelo ezifana ne-voltage equalization kunye neendleko ezifanelekileyo kunye namandla abasebenzi.

(2) Ii-capacitor zefilimu zinokumelana nobushushu obuphezulu kunee-capacitor ze-electrolytic.

(3) Ixesha lobomi be-capacitor yefilimu lide kune-capacitor ye-electrolytic. Ngokubanzi, ixesha lobomi be-capacitor ye-electrolytic yi-2,000H, kodwa ixesha lobomi be-capacitor yefilimu ye-CRE yi-100,000H.

(4) I-ESR incinci kakhulu. I-ESR ye-capacitor yefilimu idla ngokuba phantsi kakhulu, ngokubanzi ingaphantsi kwe-1mΩ, kwaye i-inductance ye-parasitic nayo iphantsi kakhulu, ingamashumi ambalwa kuphela e-nH, engenakuthelekiswa nanto yi-aluminium electrolytic capacitors. I-ESR ephantsi kakhulu inciphisa uxinzelelo lwe-voltage kwi-switching tube, nto leyo eluncedo ekuthembekeni nasekuzinzeni kwe-switching tube.

(5) Ukumelana okunamandla kombane we-ripple. Ukumelana kombane we-ripple wee-capacitors zefilimu ezenziwe ngesinyithi kunokuba zizihlandlo ezilishumi ukuya kwezilishumi elinesibini zombane we-ripple olinganisiweyo wee-capacitors ze-aluminium electrolytic ezinomthamo ofanayo. Ukuze kufezekiswe ukumelana okuphezulu kombane, ii-capacitors ze-aluminium electrolytic zihlala zisebenzisa umthamo omkhulu ukuhlangabezana neemfuno, ngelixa umthamo omkhulu uyinkcitho engeyomfuneko yeendleko kunye nendawo yokufaka.