Ibyiza by'ibicuruzwa bya capacitor ya filime
Capacitors za kera zishyigikira DC zose zakoreshaga capacitors za electrolytic. Nyuma y’iterambere ry’ikoranabuhanga rya capacitors za filime, cyane cyane iterambere ry’ikoranabuhanga rya filime y’ibanze n’ivuka ry’ikoranabuhanga ryo gutandukanya ibyuma, ntabwo ari ingano ya capacitors za filime gusa yarushijeho kuba nto, ahubwo urwego rw’amashanyarazi yo kwihanganira ibicuruzwa narwo rwagumye ku rwego runini. Ubu amasosiyete menshi akoresha capacitors za filime za polypropylene zishyushye cyane nk’acapacitors za DC. Urugero rusanzwe ni iterambere rya moderi ya Toyota ya RIUS; kandi abahagarariye amasosiyete y’imodoka zo mu rugo ni BYD F3DM na E6, zombi zikoresha capacitors za filime nk’acapacitors za DC. Capacitors za filter zakoreshejwe mu gisekuru cya mbere cya Toyota Prius ni capacitors za electrolytic. Guhera mu gisekuru cya kabiri, capacitors za filter za filime za DC-LINK zarakoreshejwe.
A. Umutekano mwiza w'ibicuruzwa n'ubudahangarwa bukomeye bw'amashanyarazi
Kubera ko capacitors za filime zifite ubushobozi bwo kwivura kandi zakozwe hakurikijwe ibipimo ngenderwaho bya 1EC61071, imbaraga za capacitor ziruta 1.5 by'imbaraga za volteji. Byongeye kandi, capacitor ikoresha ikoranabuhanga rya filime igabanyijemo ibice, bityo capacitor ntizatera ikibazo cy'uruziga rugufi mu buryo bw'imitekerereze, ibyo bikaba byongera cyane umutekano w'ubu bwoko bwa capacitors. Uburyo busanzwe bwo gutsindwa ni uruziga rufunguye. Mu bikorwa byihariye, imbaraga za capacitors ziruta volteji ni ikimenyetso cy'ingenzi cyo gusuzuma capacitors. Mu by'ukuri, kuri capacitors za electrolytic, ingufu ntarengwa za volteji zemerwa ni inshuro 1.2, ibyo bikaba bituma abayikoresha batekereza ku mbaraga za volteji aho gutekereza ku ngufu za volteji.
B. Imiterere myiza y'ubushyuhe, ubushyuhe bw'ibicuruzwa ni bwinshi, kuva kuri -40C-105C
Filimi ya polypropylene ifite ubushyuhe bwinshi ikoreshwa muri capacitor ya DC ifite ubushyuhe buhamye kurusha filimi ya polyester na capacitors za electrolytic zidafite. Uko ubushyuhe bugenda bwiyongera, ubushobozi bwa filimi ya polypropylene bugenda bugabanuka muri rusange, ariko igipimo cyo kugabanuka ni gito cyane, hafi 300PPM/C; mu gihe ubushobozi bwa filimi ya polyester buhinduka cyane bitewe n'ubushyuhe, haba mu cyiciro cy'ubushyuhe bwinshi cyangwa mu cyiciro cy'ubushyuhe buke, ari cyo +200~+600PPM/C.
C. Imiterere y'umuvuduko uhoraho, imiterere myiza y'umusaruro ugaragara ku buryo bwo hejuru
Muri iki gihe, imirongo myinshi yo guhinduranya ibikoresho by'ikoranabuhanga (controller switching frequencies) ni hafi 10K HZ, ibi bikaba bisaba ko ibicuruzwa bigira imikorere myiza ya frequency yo hejuru. Kuri capacitors za electrolytic na capacitors za polyester film, iki kibazo ni ikibazo.
D. Nta polarity, ishobora kwihanganira voltage isubira inyuma
Electrode za capacitors za filime ni ibyuma binini bishyirwa kuri filime nto. Iki gicuruzwa nta polarity gifite, bityo biroroshye cyane ku bakoresha, kandi nta mpamvu yo gutekereza ku miterere myiza n'imirongo mibi. Kuri capacitors za electrolytic, iyo voltage irenze inshuro 1.5 Un ikoreshejwe kuri capacitors za electrolytic, bizatera reaction ya chemical imbere muri capacitors. Iyo iyi voltage imaze igihe gihagije, capacitors izaturika, cyangwa electrolyte izasohoka uko umuvuduko w'imbere wa capacitors urekurwa.
E. Voltage ifite urwego rwo hejuru, nta miterere n'ibirwanya uburinganire bikenewe
Kugira ngo hongerwe ingufu zisohoka, ingufu za bisi z’imodoka zivanze n’izikoresha lisansi zigenda ziyongera. Imbaraga za bateri zisanzwe zihabwa moteri ku isoko ni 280V, 330V na 480V. Capacitors zihuye nazo zitandukanye n’inganda zitandukanye, ariko muri rusange ni 450V, 600V, 800V, kandi ubushobozi bwazo buri hagati ya 0.32mF na 2mF. Imbaraga za capacitors zikoresha amashanyarazi ntabwo zirenze 500V, bityo iyo ingufu za bisi zirenze 500V, sisitemu ishobora kongera urwego rwa voltage rwo kwihanganira capacitors binyuze mu guhuza capacitors zikoresha amashanyarazi mu buryo bukurikiranye. Muri ubu buryo, si ingano n’igiciro cya capacitors byongewe gusa, ahubwo n’ubwiyongere bw’amashanyarazi na ESR mu muyoboro birakongerwa.
F. ESR nkeya, ubudahangarwa bukomeye bw'umuyoboro w'amazi
Capacitor ya filime irenga 200mA/μF, kandi capacitor ya electrolytic ifite ubushobozi bwo guhindagurika bwa 20mA/μF. Iyi miterere ishobora kugabanya cyane ubushobozi bwa capacitor ikenewe muri sisitemu.
G. Ikimenyetso cyo hasi cya ESL
Imiterere y’ingufu nke za inverter isaba ko igice cyayo cy’ingenzi, capacitor ya DC-Link, gifite inductance nke cyane. Capacitors za DC-Link DC filter film zikora neza zihuza busbar muri capacitor module kugira ngo zigabanye inductance yayo bwite (<30nH), bigabanya cyane ingaruka zo guhindagurika ku muvuduko ukenewe wo guhindura. Kubwibyo, capacitor yo kwinjiza ihujwe mu buryo buhuye na capacitor ya DC-Link ikunze kubura, kandi electrode ya capacitor ihuzwa na IGBT.
H. Ubudahangarwa bukomeye bw'umuraba w'amazi
Ishobora kwihanganira imiraba minini ako kanya. Ikoranabuhanga ryo gukata imiraba n'ikoranabuhanga ryo gukaza umuvuduko wa capacitor bishobora kunoza ubushyuhe bw'umuvuduko w'amashanyarazi n'ubushobozi bwo gukubita ibyuma.
J. Igihe kirekire cyo gukorera
Imiterere ya filime idasaza igaragaza ko capacitor ya filime imara igihe kirekire cyane, cyane cyane iyo ikoze ku muvuduko w’amashanyarazi n’ubushyuhe bw’imikorere, igihe cyo kuyikora kirenze amasaha 15000-20000; niba impuzandengo ari 30Km/H, ishobora kugira 450000Km mu gihe cyo kuyikora, kandi igihe cyo kuyikora kirahagije ku rwego rw’urugendo rw’imodoka.
Capacitors za DC-LINK zikora neza cyane ni capacitors zikoresha inzira nshya zo gukora n'ikoranabuhanga rya filime ry'icyuma. Zongera ingufu nyinshi za capacitors za filime zisanzwe, bivuze ko ingano ya capacitors nayo igabanuka. Ku rundi ruhande, ihuza capacitor core na busbar kugira ngo ihuze n'ibisabwa n'abakiriya ku bunini bworoshye, ibyo bigatuma inverter module yose iba nto, ahubwo inagabanya cyane inductance ya straif muri circuit yo gukoreshwa, bigatuma imikorere ya circuit irushaho kuba myiza. Igishushanyo mbonera cya circuit gikoreshwa mu modoka zikoresha amashanyarazi gifite voltage nyinshi, amashanyarazi menshi, overvoltage, reverse voltage, amashanyarazi menshi, n'ibisabwa kugira ngo birambe igihe kirekire. Capacitors za filime nta gushidikanya ko ari zo modoka zikoresha amashanyarazi nk'ama capacitors ashyigikira DC.
CRE itanga ibisubizo bya capacitor by’umwuga ku modoka zikoresha amashanyarazi n’imodoka zikoresha amashanyarazi zivanze. Serivise zacu za DKMJ-AP na serivise za DMJ-PC bitanga imikorere y’ingenzi yo kuyungurura DC-Link muri moteri za EV na HEV. Zifite ubushobozi bunini bw’ingufu mu bunini buto bw’umubiri n’ikinyuranyo kinini cya bandgap (WGB) kugira ngo zuzuze ibisabwa mu gukora.
Kuramo Amadosiye
