Kwizithuthi zombane ezintsha zamandla, ii-capacitors zezona zinto zibalulekileyo ekumiseleni ubomi be-variable frequency drive kulawulo lwamandla, ulawulo lwamandla, i-power inverter kunye neenkqubo zokuguqula i-DC-AC.I-capacitor ye-DC-LINKiqhagamshelwe nebhetri yokugcina amandla kunye neyunithi ye-inverter ukuze ifunxe umsinga ophezulu we-pulse we-inverter ukusuka kwisiphelo se-DC-Link, nto leyo enokuthintela ukuba i-voltage ephezulu ye-pulse iveliswe kwi-impedance ye-DC-Link, ukuze ukuguquguquka kwe-voltage kwisiphelo se-inverter kube ngaphakathi koluhlu olwamkelekileyo; Kwangaxeshanye, inokuthintela i-inverter ekuchatshazelweni kukugqithisa kwe-voltage kunye ne-transient over-voltage kwi-terminal ye-DC-Link.

Iinkcukacha eziphambili zobugcisa zee-capacitors ze-DC-Link yi-capacitance, i-standing voltage kunye nobubanzi bobushushu bokusebenza. Ukongeza kwezi zibonakaliso zithathu ziphambili, esinye isibonakaliso esibalulekileyo sobuchwephesha yi-equivalent series resistance (ESR) ye-capacitor. Kwi-capacitor ye-DC-Link, i-ESR imele ukulahleka kwe-capacitor ngokwayo. Okukhona i-ESR iphantsi, kokukhona ilahleko incinci, kokukhona i-output current inkulu, kokukhona ubushushu be-capacitor buphantsi, kwaye kokukhona ukusebenza kubhetele.

Ii-capacitor zefilimu ezisebenza kakuhle ze-CRE zisetyenziswa kakhulu kwizithuthi ezintsha zamandla, ukuvelisa umbane womoya, ezothutho lukaloliwe nakwamanye amashishini. Phakathi kwazo,I-DKMJ-AP Ii-capacitors zisetyenziswa ngokukodwa kwinkqubo entsha yokuqhuba i-frequency drive yezithuthi zombane yamandla amatsha, enokumelana nombane ophezulu, amandla amakhulu, uluhlu olubanzi lokusebenza kunye ne-ESR ephantsi kakhulu.