Q1: Menene ainihin rawar da masu samar da fina-finai ke yi a cikin gine-ginen lantarki na sababbin motocin makamashi?
A: Kamar yadda DC-link capacitors, aikinsu na farko shine ɗaukar babban bus ɗin bus ɗin bus, sauye-sauyen ƙarfin lantarki, da kare IGBT/SiC MOSFET na'urori masu sauyawa daga wutar lantarki na wucin gadi da na yanzu.
Q2: Me yasa dandamali na 800V ke buƙatar masu ƙarfin fim mafi girma?
A: Kamar yadda ƙarfin lantarki na bas ɗin ya ƙaru daga 400V zuwa 800V, buƙatun don capacitor jure ƙarfin lantarki, haɓakar sha na yanzu, da haɓakar zafi yana ƙaruwa sosai. Ƙananan ESR da halayen ƙarfin ƙarfin juriya na masu ƙarfin fim sun fi dacewa da yanayin yanayin wutar lantarki.
Q3: Menene ainihin fa'idodin capacitors na fim akan masu ƙarfin lantarki a cikin sabbin motocin makamashi?
A: Suna ba da ƙarfin juriya mafi girma, ƙananan ESR, ba polar ba, kuma suna da tsawon rayuwa. Mitar su ta fi girma fiye da na masu ƙarfin lantarki, wanda ya yi daidai da buƙatun sauyawa mai girma na SiC MOSFETs.
Q4: Me yasa sauran capacitors cikin sauƙin haifar da hauhawar wutar lantarki a cikin inverters SiC?
A: Babban ESR da ƙananan mitar resonant suna hana su ɗaukar tasirin halin yanzu mai ƙarfi mai ƙarfi yadda ya kamata. Lokacin da SiC ke sauyawa a cikin sauri sauri, ƙarfin lantarki yana ƙaruwa, mai yuwuwar lalata na'urar.
Q5: Ta yaya masu ɗaukar fim ɗin ke taimakawa rage girman tsarin tuƙi na lantarki?
A: A cikin binciken shari'ar Wolfspeed, mai jujjuyawar SiC na 40kW yana buƙatar capacitors na fim guda takwas kawai (idan aka kwatanta da 22 electrolytic capacitors don IGBTs na tushen silicon), yana rage girman sawun PCB da nauyi.
Q6: Waɗanne sababbin buƙatu ne ke sanya mitar sauyawa mai girma akan masu ƙarfin DC-Link?
A: Ana buƙatar ƙananan ESR don rage asarar sauyawa, ana buƙatar mafi girman mitar resonant don murkushe ripple mai girma, kuma ana buƙatar mafi kyawun jurewar dv/dt kuma ana buƙatar.
Q7: Ta yaya ake kimanta amincin rayuwa na capacitors na fim?
A: Ya dogara da kwanciyar hankali na thermal na kayan (misali, fim din polypropylene) da kuma zane-zane na zafi. Misali, jerin YMIN MDP yana inganta tsawon rayuwa a yanayin zafi mai yawa ta hanyar inganta tsarin watsar da zafi.
Q8: Ta yaya ESR na capacitors fina-finai ke shafar ingantaccen tsarin?
A: Ƙananan ESR yana rage asarar makamashi yayin sauyawa, yana rage ƙarfin lantarki, kuma yana inganta ingantaccen inverter kai tsaye.
Q9: Me yasa capacitors fina-finai suka fi dacewa da mahallin mota mai girma?
A: Tsarin su mai ƙarfi, rashin ruwa electrolyte, yana ba da juriya mafi girma idan aka kwatanta da masu ƙarfin lantarki, kuma shigar da ba tare da polarity ba yana sa su zama masu sassauƙa.
Q10: Mene ne halin yanzu kutsawa kudi na fim capacitors a cikin lantarki drive inverters?
A: A cikin 2022, ƙarfin shigar da na'urorin da ke da ikon yin fim ya kai raka'a miliyan 5.1117, wanda ya kai kashi 88.7% na jimlar shigar da tsarin sarrafa wutar lantarki. Manyan kamfanoni irin su Tesla da Nidec sun kai kashi 82.9%.
Q11: Me yasa ake amfani da capacitors na fim a cikin inverters na photovoltaic?
A: Abubuwan buƙatun don babban abin dogaro da tsawon rayuwa sun yi kama da waɗanda ke cikin aikace-aikacen mota, kuma suna buƙatar jure wa canjin yanayin zafi na waje.
Q12: Ta yaya jerin MDP ke magance matsalolin danniya a cikin da'irori na SiC?
A: Ƙananan ƙirar ESR ɗinsa yana rage sauyawa overshoot, inganta dv/dt juriya da 30%, kuma yana rage haɗarin rushewar wutar lantarki.
Q13: Ta yaya wannan silsilar ke aiki a yanayin zafi mai girma?
A: Yin amfani da kayan kwanciyar hankali mai zafi da ingantaccen tsarin watsar da zafi, muna tabbatar da ƙimar lalata ƙasa da 5% a 125 ° C.
Q14: Ta yaya jerin MDP ke cimma miniaturization?
A: Ƙirƙirar fasahar fim mai ƙima tana ƙara ƙarfin kowane juzu'in raka'a, yana haifar da ƙarfin ƙarfin da ya wuce matsakaicin masana'antu, yana ba da damar ƙirƙira ƙirar tuƙi na lantarki.
Q15: Farashin farko na capacitors na fim ya fi na masu ƙarfin lantarki. Shin suna ba da fa'ida ta farashi fiye da zagayen rayuwa?
A: iya. Fim capacitors na iya dawwama har zuwa rayuwar abin hawa ba tare da maye gurbin ba, yayin da masu ƙarfin lantarki na buƙatar kulawa akai-akai. A cikin dogon lokaci, masu sarrafa fim suna ba da ƙarancin farashi gabaɗaya.
Lokacin aikawa: Oktoba-14-2025