Kubatsira kukuru kwe organometallic film capacitors ndeyekuti ivo vari kuzvirapa, izvo zvinoita kuti aya ma capacitor ave mumwe weanokurumidza kukura capacitors nhasi.

Kune nzira mbiri dzakasiyana dzekuzviporesa kwesimbi yefirimu capacitors: imwe ndeyekuzvibvisa kuzvipodza;imwe yacho ndeye electrochemical self-healing.Iyo yekutanga inoitika pamhepo yakakwira, saka zvakare inonzi yakakwira-voltage yekuzviporesa;nekuti iyo yekupedzisira inoitikawo pane yakaderera voltage, inowanzonzi yakaderera-voltage yekuzviporesa.

Discharge Self-Healing

Kuenzanisira nzira yekubudisa kuzviporesa, fungidzira kuti pane kukanganisa mufirimu yehupenyu pakati pemagetsi maviri ane metallized ane kupikisa kweR. Zvichienderana nemhando yehurema, inogona kunge iine metallic defect, semiconductor kana kuti isina kunaka. insulated defect.Zviripachena, kana chirema chiri chimwe chekare, iyo capacitor inenge yazviburitsa pachayo pa low voltage.Izvo chete mune yekupedzisira kesi iyo inonzi yakakwira voltage discharge inozviporesa.

Iyo nzira yekuzvibvisa yekuzvirapa ndeyekuti pakarepo mushure mekuisa voltage V kune metalized film capacitor, ohmic ikozvino I = V / R inopfuura nepakaremara.Naizvozvo, density iripo J=V/Rπr2 inoyerera nepakati pesimbi ye electrode, kureva, iyo inoswedera pedyo nenzvimbo kune chakakanganisika (iyo diki r iri) uye iyo yakakwirira density yazvino iri mukati memetalized electrode.Pamusana pekupisa kweJoule kunokonzerwa nekuremara kwekushandiswa kwesimba W = (V2 / R) r, kupikisa R kwe semiconductor kana insulating defect inoderera zvishoma nezvishoma.Naizvozvo, ikozvino I uye simba rekushandisa W rinowedzera nekukurumidza, semhedzisiro, ikozvino density J1 = J = V / πr12 inokwira zvakanyanya munzvimbo iyo iyo metallized electrode iri padyo nekuremara, uye kupisa kwayo kweJoule kunogona kunyungudutsa iyo metallized. layer mudunhu, zvichiita kuti arc pakati pema electrode ibhururuke pano.Iyo arc inokurumidza kubuda uye inorasa simbi yakanyungudutswa, ichiita nzvimbo yakavharidzirwa yekuzvimiririra isina simbi layer.Iyo arc inodzima uye kuzviporesa kunowanikwa.

Nekuda kwekupisa kweJoule uye arc inogadzirwa mukuzvibvisa-kuzviporesa maitiro, iyo dielectric yakatenderedza chirema uye nzvimbo yekuzviparadzanisa yega yenzvimbo ye dielectric inokuvadzwa zvisingadzivisiki nekukuvara kwemafuta uye magetsi, uye nekudaro kuparara kwemakemikari, gasification uye carbonization, uye kunyange. mechanical damage inoitika.

Kubva pane zviri pamusoro, kuti uwane kukwana kwakakwana kwekuzviporesa, zvinodikanwa kuve nechokwadi chenzvimbo yakakodzera yenzvimbo yakatenderedza chikanganiso, saka dhizaini yesimbi yakagadzirwa organic film capacitor inoda kuvandudzwa kuitira kuti uwane inonzwisisika yepakati kutenderedza. kuremara, ukobvu hwakakodzera hwesimbi yakasungirirwa, nharaunda yehermetic, uye yakakodzera yepakati voltage uye kugona.Izvo zvinonzi zvakakwana kubuda kwekuzvirapa ndeizvi: nguva yekuzvirapa ipfupi kwazvo, simba rekuzviporesa idiki, kuparadzanisa kwakanakisa kwekuremara, hapana kukuvadza kune yakapoteredza dielectric.Kuti uwane kuzvirapa kwakanaka, mamorekuru emufirimu weorganic anofanirwa kuve nereshiyo yakaderera yekabhoni kune maatomu ehydrogen uye mwero mwero weokisijeni, kuitira kuti kana kuparara kwemamorekuru emufirimu kunoitika mukuzvipodza kwekubuda, kwete. kabhoni inogadzirwa uye hapana kabhoni deposition inoitika kudzivirira kuumbwa kwemaitiro matsva ekuitisa, asi kuti CO2, CO, CH4, C2H2 uye mamwe magasi anogadzirwa kudzima arc nekukwira kwakanyanya kwegasi.
Kuti ave nechokwadi chokuti midhiya yakakomberedza chikanganiso hachina kukuvadzwa kana ichizviporesa, simba rekuzviporesa harifaniri kunge rakanyanya kukura, asiwo kwete duku, kuitira kuti abvise metallization layer yakapoteredza chikanganiso, kuumbwa kwekudzivirira. (high resistance) zone, chirema chichave chega, kuti uwane kuzvirapa.Zviripachena, iyo inodiwa yekuzvirapa simba ine hukama zvakanyanya nesimbi yesimbi yesimbi, ukobvu, uye nharaunda.Nokudaro, kuitira kuderedza simba rekuzviporesa uye kuwana kuzvirapa kwakanaka, metallization yemafirimu ehupenyu ane simbi yakaderera inonyunguduka inoitwa. Uyezve, iyo metallization layer haifaniri kunge isina kuenzana uye yakatetepa, kunyanya kudzivirira kukwenya, kana zvisina kudaro. , nzvimbo yekuzviparadzanisa yekudzivirira inozoita sebazi uye inotadza kuwana kuzvirapa kwakanaka.CRE capacitors ese anoshandisa mafirimu enguva dzose, uye panguva imwechete yakasimba inopinda inspection management, ichivharira mafirimu akaremara pamusuwo, kuitira kuti mhando yemafirimu epacitor inovimbiswa zvizere.

Kuwedzera pakuburitsa kuzvipodza, kune imwezve, inova electrochemical self-healing.Ngatikurukurei nzira iyi munyaya inotevera.