Kubatsira kukuru kwema capacitor e organometallic film ndekwekuti anozvirapa ega, izvo zvinoita kuti ma capacitor aya ave mamwe ema capacitor ari kukura nekukurumidza nhasi.

Kune nzira mbiri dzakasiyana dzekuzviporesa dzema capacitor efirimu ane metalized: imwe inozviporesa yega; imwe inozviporesa yega ne electrochemical. Yekutanga inoitika pamagetsi akakwira, saka inonziwo high-voltage self-healing; nekuti yekupedzisira inoitikawo pamagetsi akaderera kwazvo, inowanzonzi low-voltage self-healing.

Kubuda Mudumbu Uchizviporesa

Kuti tiratidze mashandiro ekuzviporesa kwega kwega kwega kwedhishi, ngatitii pane dambudziko riri mufirimu reorganic pakati pemaelectrode maviri esimbi ane resistance yeR. Zvichienderana nerudzi rwedambudziko racho, rinogona kunge riri dambudziko resimbi, semiconductor kana dambudziko risina kuputirwa zvakanaka. Zviri pachena kuti kana dambudziko racho riri rimwe reaya ekutanga, capacitor inenge yazviburitsa pamagetsi mashoma. Muchiitiko chekupedzisira chete ndipo panoporesa iro rinonzi discharge yemagetsi akawanda.

Maitiro ekuzviporesa ega ega ndeekuti mushure mekuisa voltage V kune metalized film capacitor, ohmic current I=V/R inopfuura nepakati pe defect. Nokudaro, current density J=V/Rπr2 inoyerera nepakati pe metallized electrode, kureva kuti, nzvimbo iri pedyo ne defect (r diki ndiyo) uye current density yayo iri mukati me metallized electrode. Nekuda kwekupisa kweJoule kunokonzerwa ne defect power consumption W=(V2/R)r, resistance R ye semiconductor kana insulating defect inoderera zvakanyanya. Naizvozvo, current I uye power consumption W inowedzera nekukurumidza, nekudaro, current density J1= J=V/πr12 inokwira zvakanyanya munzvimbo iyo metallized electrode iri pedyo zvikuru ne defect, uye Joule heat yayo inogona kunyungudutsa metallized layer munzvimbo, zvichiita kuti arc iri pakati pe electrodes ibhururuke pano. Arc inokurumidza kupwanyika uye inorasa simbi yakanyungudutswa, ichigadzira insulated isolation zone isina metal layer. Arc inodzimwa uye self-healing inowanikwa.

Nekuda kwekupisa kweJoule uye arc zvinogadzirwa mukuita kwekuzviporesa, dielectric yakakomberedza defect uye nzvimbo yekuparadzanisa insulation ye pamusoro pe dielectric zvinokuvadzwa zvisingadzivisike nekukuvara kwekupisa nemagetsi, uye nekudaro kuora kwemakemikari, gasification uye carbonization, uye kunyange kukuvara kwemakemikari kunoitika.

Kubva pane zvataurwa pamusoro apa, kuti tiwane kuzviporesa kwakakwana kwekubuda kwemhepo, zvakakosha kuve nechokwadi chekuti nharaunda yakakodzera yemuno yakapoteredza defect, saka dhizaini yesimbi organic film capacitor inoda kugadziriswa kuitira kuti pave ne medium inonzwisisika yakakomberedza defect, ukobvu hwakakodzera hwesimbi simbi, nharaunda ine hermetic, uye core voltage yakakodzera uye kugona. Iyo inonzi perfect discharge self-healing ndeye: nguva yekuzviporesa ipfupi kwazvo, simba rekuzviporesa idiki, kupatsanurwa kwakanaka kwezvikanganiso, hapana kukuvara kune dielectric yakapoteredza. Kuti pave nekuzviporesa kwakanaka, mamorekuru efirimu reorganic anofanira kunge aine chiyero chidiki chekabhoni kumaatomu ehydrogen uye huwandu hweoxygen huri pakati nepakati, kuitira kuti kana mamorekuru efirimu akaitika mukubuda kwega, hapana kabhoni inogadzirwa uye hapana carbon deposition inoitika kudzivirira kuumbwa kwenzira itsva dzinofambisa mhepo, asi pane CO2, CO, CH4, C2H2 nemamwe magasi anogadzirwa kuti adzime arc nekukwira kwakanyanya kwegasi.
Kuti zvive nechokwadi chekuti nzvimbo dzakatenderedza chikanganiso hadzikuvadzwi pakuzvirapa, simba rekuzvirapa harifanirwe kunge rakakura zvakanyanya, asiwo harifanirwe kunge diki zvakanyanya, kuti ribvise simbi yakatenderedza chikanganiso, kuumbwa kwenzvimbo yekudzivirira (high resistance), chikanganiso chichabviswa, kuti chigone kuzvirapa. Zviri pachena kuti simba rekuzvirapa rinodiwa rinoenderana zvakanyanya nesimbi yesimbi, ukobvu, uye nharaunda. Naizvozvo, kuti tideredze simba rekuzvirapa uye tigone kuzvirapa zvakanaka, simbi yemafirimu eorganic ane simbi dzakadzika dzinonyunguduka dzinoitwa. Pamusoro pezvo, simbi haifanirwe kunge yakakora uye yakatetepa zvisina kuenzana, kunyanya kudzivirira kukwenya, zvikasadaro, nzvimbo yekuparadzanisa insulation ichave yakaita sebazi uye inokundikana kuzvirapa zvakanaka. MaCRE capacitors ese anoshandisa mafirimu akajairwa, uye panguva imwe chete manejimendi yekutarisa zvinhu zvinopinda, achivhara mafirimu asina kunaka pamusuwo, kuitira kuti mhando yemafirimu e capacitor ive nechokwadi chakazara.

Pamusoro pekuzviporesa kwega, kune imwezve, iyo inonzi electrochemical self-healing. Ngatikurukurei nezvenzira iyi munyaya inotevera.