Kuphulika kwa ma capacitor a ceramic okwera kwambiri amatha kugawidwa m'magulu atatu. Pogwiritsa ntchito ma capacitor awa, amatha kusweka, zomwe nthawi zambiri zimadabwitsa akatswiri ambiri. Ma capacitor awa adayesedwa ma voltage, dissipation factor, kutulutsa pang'ono, komanso kukana kwa insulation panthawi yogula, ndipo onse adapambana mayeso. Komabe, patatha miyezi isanu ndi umodzi kapena chaka chogwiritsidwa ntchito, ma capacitor ena okwera kwambiri a ceramic adapezeka kuti adasweka. Kodi fractures izi zimayambitsidwa ndi ma capacitor okha kapena zinthu zakunja zachilengedwe?
Nthawi zambiri, kung'ambika kwa ma capacitor a ceramic okwera kwambiri kumatha kutsatiridwa ndi izi zotheka zitatu:
Chotheka choyamba ndi kuwonongeka kwa kutentha. Pamene ma capacitor akugwiritsidwa ntchito nthawi yomweyo kapena nthawi yayitali kwambiri komanso yogwira ntchito kwambiri, ma capacitor a ceramic angapangitse kutentha. Ngakhale kuti kutentha kwa kutentha kumachepa, kutentha kumakwera mofulumira, zomwe zimapangitsa kuwonongeka kwa kutentha pa kutentha kwakukulu.
Kuthekera kwachiwiri ndi kuwonongeka kwa mankhwala. Pali mipata pakati pa mamolekyu amkati a ma capacitor a ceramic, ndipo zolakwika monga ming'alu ndi voids zimatha kuchitika panthawi yopanga capacitor (zowopsa zomwe zingatheke popanga zinthu zotsika). M’kupita kwa nthaŵi, zochita zina za mankhwala zimatha kutulutsa mpweya monga ozone ndi carbon dioxide. Mipweya iyi ikaunjikana, imatha kukhudza gawo lakunja la encapsulation ndikupanga mipata, zomwe zimapangitsa kuti pakhale ming'alu.
Kuthekera kwachitatu ndi kuwonongeka kwa ion. Ma voteji apamwamba a ceramic capacitor amadalira ma ion akuyenda mwachangu mothandizidwa ndi gawo lamagetsi. Pamene ma ion amaperekedwa kumunda wamagetsi wautali, kuyenda kwawo kumawonjezeka. Pankhani yaposachedwa kwambiri, wosanjikiza wotsekemera amatha kuwonongeka, zomwe zimapangitsa kuwonongeka.
Nthawi zambiri, zolephera izi zimachitika pakatha pafupifupi miyezi isanu ndi umodzi kapena chaka. Komabe, zopangidwa kuchokera kwa opanga omwe ali ndi khalidwe loipa akhoza kulephera pakangopita miyezi itatu yokha. Mwanjira ina, nthawi yamoyo ya ma capacitor apamwamba a ceramic ndi miyezi itatu yokha mpaka chaka chimodzi! Chifukwa chake, mtundu uwu wa capacitor nthawi zambiri siwoyenera zida zofunikira monga ma gridi anzeru ndi ma jenereta okwera kwambiri. Makasitomala a Smart grid nthawi zambiri amafuna ma capacitor kuti azikhala zaka 20.
Kukulitsa moyo wa ma capacitor, malingaliro otsatirawa angaganizidwe:
1)Sinthani zida za dielectric za capacitors. Mwachitsanzo, mabwalo omwe amagwiritsira ntchito X5R, Y5T, Y5P, ndi zoumba zina za Class II zitha kusinthidwa ndi zoumba za Class I monga N4700. Komabe, N4700 ili ndi kagawo kakang'ono ka dielectric, kotero ma capacitor opangidwa ndi N4700 adzakhala ndi miyeso yokulirapo yamagetsi omwewo ndi mphamvu. Zoumba zamtundu wa Class I nthawi zambiri zimakhala ndi zotchingira zopinga kuwirikiza kakhumi kuposa zoumba za Gulu II, zomwe zimapatsa mphamvu zotchinjiriza zamphamvu kwambiri.
2)Sankhani opanga ma capacitor okhala ndi njira zabwino zowotcherera mkati. Izi zimaphatikizapo kusalala ndi kuperewera kwa mbale za ceramic, makulidwe a plating ya siliva, kudzaza kwa m'mphepete mwa mbale za ceramic, mtundu wa soldering wa lead kapena ma terminals achitsulo, komanso kuchuluka kwa epoxy coating encapsulation. Zambirizi zimagwirizana ndi mawonekedwe amkati ndi mawonekedwe a ma capacitors. Ma capacitor okhala ndi mawonekedwe abwino nthawi zambiri amakhala ndi mapangidwe abwinoko amkati.
Gwiritsani ntchito ma capacitor awiri mofanana m'malo mwa capacitor imodzi. Izi zimalola kuti magetsi oyendetsedwa ndi capacitor imodzi agawidwe pakati pa ma capacitor awiri, ndikupangitsa kuti ma capacitor azikhala olimba. Komabe, njirayi imawonjezera ndalama ndipo imafuna malo ochulukirapo oyika ma capacitor awiri.
3) Kwa ma capacitor apamwamba kwambiri, monga 50kV, 60kV, kapena 100kV, mwambo umodzi ceramic mbale Integrated dongosolo akhoza m'malo ndi awiri wosanjikiza ceramic mbale mndandanda kapena dongosolo kufanana. Izi zimagwiritsa ntchito ma capacitor a ceramic awiri osanjikiza kuti apititse patsogolo mphamvu yamagetsi. Izi zimapereka malire okwera kwambiri, ndipo kuchuluka kwa voteji kumapangitsa kuti ma capacitor akhale otalikirapo. Pakadali pano, kampani yokhayo ya HVC imatha kukwaniritsa mawonekedwe amkati amagetsi apamwamba a ceramic capacitors pogwiritsa ntchito mbale zosanjikiza ziwiri za ceramic. Komabe, njirayi ndi yokwera mtengo ndipo imakhala ndi zovuta zambiri zopanga. Kuti mudziwe zambiri, chonde funsani gulu logulitsa ndi uinjiniya la kampani ya HVC.
