A. Kyakkyawan amincin samfura da juriya mai ƙarfi ga wuce gona da iri

Tunda capacitors na fim suna da kaddarorin warkarwa da kansu kuma an tsara su daidai da ƙa'idar 1EC61071, juriyar ƙarfin wutar lantarki na capacitor ya fi 1.5 na ƙarfin lantarki da aka ƙididdige. Bugu da ƙari, capacitor yana amfani da fasahar fim ɗin raba, don haka capacitor ba zai haifar da lalacewar da'ira ta gajeru a ka'ida ba, wanda ke inganta amincin wannan nau'in capacitor sosai. Yanayin gazawar da aka saba gani shine da'ira a buɗe. A cikin takamaiman aikace-aikace, juriyar ƙarfin wutar lantarki na capacitor kuma muhimmin alama ce don kimanta capacitors. A zahiri, ga capacitors na lantarki, matsakaicin ƙarfin wutar lantarki da aka yarda shine sau 1.2, wanda ke tilasta masu amfani su yi la'akari da ƙarfin wutar lantarki mai tsayi maimakon ƙarfin lantarki na asali.

B. Kyakkyawan halayen zafin jiki, kewayon zafin samfurin yana da faɗi, daga -40C-105C

Fim ɗin polypropylene mai yawan zafin jiki da ake amfani da shi a cikin capacitor na tallafi na DC yana da kwanciyar hankali a yanayin zafi wanda fim ɗin polyester da capacitors na electrolytic ba su da shi. Yayin da zafin jiki ke ƙaruwa, ƙarfin capacitor na fim ɗin polypropylene yana raguwa gabaɗaya, amma rabon raguwar yana da ƙanƙanta sosai, kusan 300PPM/C; yayin da ƙarfin fim ɗin polyester ke canzawa sosai idan aka kwatanta da zafin jiki, ko a matakin zafi mai yawa ko a matakin zafi mai ƙasa, wanda shine +200~+600PPM/C.

C. Halayen mita masu ƙarfi, kyawawan halaye masu yawan mita na samfurin

A halin yanzu, yawancin mitoci masu canza na'urori masu sarrafawa suna da kusan 10K HZ, wanda ke buƙatar samfurin ya sami kyakkyawan aiki mai yawa. Ga masu kunna wutar lantarki da masu kunna wutar lantarki, wannan buƙatar matsala ce.

D. Babu polarity, zai iya jure wa ƙarfin lantarki na baya

Electrodes na fim capacitors ƙarfe ne nano-scale da aka ajiye a kan siririn fina-finai. Samfurin ba shi da polarity, don haka yana da matukar dacewa ga masu amfani, kuma babu buƙatar la'akari da sandunan positive da negative. Ga electrolytic capacitors, idan aka yi amfani da wutar lantarki mai juyawa fiye da sau 1.5 na Un a kan electrolytic capacitor, zai haifar da amsawar sinadarai a cikin capacitor. Idan wannan ƙarfin lantarki ya daɗe, capacitor zai fashe, ko kuma electrolyte zai fita yayin da matsin lamba na ciki na capacitor ya fito.

E. Ana buƙatar ƙarfin lantarki mai inganci, babu jerin juriya da daidaitawa

Domin ƙara ƙarfin fitarwa, ƙarfin bas na motocin haɗin gwiwa da motocin mai yana ƙaruwa. Matsakaicin ƙarfin batir da aka bai wa injina a kasuwa shine 280V, 330V da 480V. Capacitors ɗin da suka dace da su sun bambanta da masana'antun daban-daban, amma gabaɗaya sune 450V, 600V, 800V, kuma ƙarfin yana tsakanin 0.32mF zuwa 2mF. Matsakaicin ƙarfin lantarki na capacitors na electrolytic bai fi 500V ba, don haka lokacin da ƙarfin bas ɗin ya fi 500V, tsarin zai iya inganta matakin ƙarfin lantarki na bankin capacitor kawai ta hanyar haɗa capacitors na electrolytic a jere. Ta wannan hanyar, ba wai kawai ana ƙara girma da farashin bankin capacitor ba, har ma ana ƙara inductance da ESR a cikin da'irar.

F. Ƙarancin ESR, ƙarfin juriyar wutar lantarki mai ƙarfi

Fim ɗin capacitor ya fi 200mA/μF girma, kuma electrolytic capacitor yana da ƙarfin ripple current na 20mA/μF. Wannan fasalin zai iya rage ƙarfin capacitor da ake buƙata a cikin tsarin sosai.

G. Ƙaramin ESL

Tsarin inverter mara ƙarfi yana buƙatar babban ɓangarensa, DC-Link capacitor, yana da ƙarancin inductance sosai. Manyan capacitors na tace DC-Link masu aiki suna haɗa sandar bus ɗin cikin tsarin capacitor don rage inductance ɗin kansa (<30nH), wanda ke rage tasirin juyawa sosai a daidai lokacin da ake buƙata. Saboda haka, capacitor ɗin sha da aka haɗa a layi ɗaya da capacitor DC-Link sau da yawa ana cire shi, kuma capacitor electrode yana da alaƙa kai tsaye da IGBT.

H. Ƙarfin juriyar wutar lantarki mai ƙarfi

Yana iya jure wa manyan kwararar ruwa nan take. Fasahar yanke igiyar ruwa da fasahar kauri mai kauri na capacitor na iya inganta zafin wutar lantarki da ƙarfin girgizar injina na samfurin.

J. Tsawon rayuwa mai amfani

Sifofin fim ɗin da ba sa tsufa suna nuna cewa capacitor ɗin fim ɗin yana da tsawon rai, musamman a ƙarfin lantarki da aka ƙima da kuma yanayin zafin aiki, tsawon rayuwar sabis ɗin ya fi awanni 15000-20000; idan matsakaicin shine 30Km/H, yana iya samun 450000Km a tsawon rayuwar sabis ɗin, kuma tsawon rayuwar capacitor ɗin ya isa ga nisan motar.

 

Masu ƙarfin ƙarfin DC-LINK na fim su ne masu ƙarfin ƙarfin lantarki waɗanda ke amfani da sabbin hanyoyin kera kayayyaki da fasahar fim mai ƙarfe. Suna ƙara yawan kuzarin capacitors na fim na gargajiya, wanda ke nufin cewa girman capacitors ɗin ma yana raguwa. A gefe guda kuma, yana haɗa tsakiyar capacitor da sandar bus don biyan buƙatun girman masu saɓani, wanda ba wai kawai yana sa dukkan module ɗin inverter ya zama ƙarami ba, har ma yana rage yawan inductance a cikin da'irar aikace-aikacen, yana sa aikin da'irar ya fi karko. Tsarin da'irar da ake amfani da shi a cikin motocin lantarki yana da babban ƙarfin lantarki, babban ƙarfin lantarki mai inganci, overvoltage, reverse voltage, babban ƙarfin lantarki mai tsayi, da buƙatun tsawon rai. Babu shakka capacitors na fim sune zaɓin motocin lantarki a matsayin capacitors na DC.