Ma capacitor amagetsi opangidwa mwamakonda omwe amagwiritsidwa ntchito m'mabwalo a DC-link

Ma capacitor amphamvu opangidwa mwamakonda omwe amagwiritsidwa ntchito mu ma DC-link circuits Chithunzi Chowonetsedwa

Kufotokozera Kwachidule:

Mndandanda wa DMJ-PC

Ma capacitor a filimu opangidwa ndi zitsulo ndi ena mwa ma capacitor odziwika kwambiri omwe amagwiritsidwa ntchito m'mabwalo amagetsi amakono pomwe ma capacitor a filimu otsika mphamvu amagwiritsidwa ntchito kwambiri podula ndi kusefa.

Ma capacitor amagetsi amagwiritsidwa ntchito kwambiri m'ma DC-link circuits, pulsed lasers, X-ray flashes, ndi phase shifters

Tumizani imelo kwa ife Tsitsani ngati PDF

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

Kufotokozera

Makhalidwe a ma capacitor a filimu amasiyana makamaka kutengera zinthu zamagetsi zomwe zimagwiritsidwa ntchito komanso ukadaulo womanga womwe umagwiritsidwa ntchito. Zina mwa ma dielectric apulasitiki omwe amagwiritsidwa ntchito kwambiri ndi polyethylene naphthalate (PEN), polyethylene terephthalate (PET), ndi polypropylene (PP).

Ma capacitor a filimu ya pulasitiki amatha kugawidwa m'magulu awiri a ma capacitor a filimu/foil ndi metallized film capacitors. Kapangidwe koyambira ka capacitor ya filimu/foil kamakhala ndi ma electrode awiri achitsulo ndi dielectric ya filimu ya pulasitiki pakati pawo. Ma capacitor a filimu/foil amapereka kukana kwakukulu kwa kutenthetsa, kuthekera kwakukulu kogwira ntchito kwa pulse, kuthekera kwabwino konyamula mphamvu, komanso kukhazikika kwabwino kwa capacitance. Mosiyana ndi ma capacitor a filimu/foil, ma capacitor a filimu yachitsulo amagwiritsa ntchito mafilimu apulasitiki okhala ndi zokutidwa ndi zitsulo ngati ma electrode. Ma capacitor a filimu yachitsulo ali ndi kukula kochepa, ndipo amapereka mphamvu yayikulu ya volumetric, kukhazikika kwabwino kwa capacitance, kutayika kochepa kwa dielectric, komanso mphamvu zabwino zodzichiritsa. Ma capacitor ena ndi osakanikirana ndi ma capacitor a filimu/foil ndi ma capacitor a filimu yachitsulo ndipo ali ndi mawonekedwe amitundu yonse iwiri. Kapangidwe ka ma capacitor a filimu yachitsulo kamapangitsa kuti akhale abwino kwambiri pa ntchito zosiyanasiyana, kuphatikiza moyo wautali komanso ma circuits a benign failure mode.

Kudzichiritsa kwa ma capacitor a filimu yachitsulo

Ma dielectric a pulasitiki omwe amagwiritsidwa ntchito kwambiri popanga ma capacitor a filimu okhala ndi zitsulo ndi monga polypropylene (PP), polyphenylene sulfide (PPS), polyester, ndi pepala lopangidwa ndi zitsulo (MP). Zipangizo zamagetsi zimenezi zili ndi mphamvu zosiyanasiyana zodzichiritsira.

Pamene kusweka kwachitika mu capacitor ya filimu yachitsulo, kupingasa kwa waya kumapangitsa kuti chitsulo choonda chozungulira malo olakwika chikhale nthunzi. Njira yotulutsira nthunziyi imachotsa chitsulo chotulutsira nthunzi m'dera lozungulira chofookacho. Popeza zinthu zotulutsira nthunzi zimachotsedwa, mtunda waufupi sungachitike pakati pa mbale. Izi zimaletsa kulephera kwa gawolo.

Mphamvu yodzichiritsira yokha ya capacitor ya filimu yokhala ndi zitsulo imadalira zinthu zambiri kuphatikizapo makhalidwe a zinthu za dielectric ndi makulidwe a wosanjikiza wachitsulo. Njira yotulutsira nthunzi imafuna mpweya wokwanira ndi zinthu za dielectric zokhala ndi mpweya wambiri pamwamba zimakhala ndi makhalidwe abwino odzichiritsira yokha. Zina mwa zinthu za dielectric za filimu ya pulasitiki zomwe zimakhala ndi makhalidwe abwino odzichiritsira zokha ndi monga polypropylene, polyester ndi polycarbonate. Kumbali ina, zinthu za dielectric za filimu ya pulasitiki zomwe zimakhala ndi mpweya wochepa pamwamba zimakhala ndi makhalidwe oipa odzichiritsira. Polyphenylene sulfide (PPS) ndi chimodzi mwa zinthu za dielectric zotere.

Kupatula kulimbitsa kudalirika, mphamvu yodzichiritsa yokha ya ma capacitor opanga mafilimu opangidwa ndi zitsulo imathandiza kukulitsa moyo wawo wogwirira ntchito. Komabe, kudzichiritsa kokha kumayambitsa kuchepa kwa malo a electrode opangidwa ndi zitsulo pakapita nthawi.

Mu ntchito, zina mwa zinthu zomwe zingafulumizitse kulephera kwa chinthu ndi monga kutentha kwambiri, ma voltage ambiri, mphezi, chinyezi chambiri, ndi kusokoneza kwa ma electromagnetic (EMI).

Kupatulapo mphamvu zabwino zodzichiritsira, ma capacitor a polyester opangidwa ndi zitsulo alinso ndi mphamvu zambiri zoyezera kutentha, kukhazikika kwa kutentha, mphamvu zambiri zoyezera kutentha, komanso mphamvu yabwino kwambiri ya volumetric. Makhalidwe amenewa amapangitsa ma capacitor awa kukhala abwino kwambiri pa ntchito zonse. Ma capacitor a polyester opangidwa ndi zitsulo amagwiritsidwa ntchito kwambiri pa ntchito za DC monga kutsekereza, kuletsa, kusokoneza, ndi kuletsa phokoso.

Ma capacitor a polypropylene okhala ndi zitsulo amapereka kukana kwakukulu kwa kutentha, kuyamwa pang'ono kwa dielectric, kutayika kochepa kwa dielectric, mphamvu yayikulu ya dielectric, komanso kukhazikika kwa nthawi yayitali. Zigawo izi zogwiritsa ntchito bwino malo zimagwiritsidwa ntchito kwambiri m'magwiritsidwe olumikizidwa ndi mains monga ma circuits a fyuluta, ma ballasts a magetsi, ndi ma circuits a snubber. Ma capacitor a polypropylene okhala ndi zitsulo ziwiri amatha kupirira magetsi ambiri komanso kuchuluka kwa ma pulse, ndipo ndi oyenera kugwiritsa ntchito omwe ali ndi kuthekera kwakukulu kwa ma pulse otsetsereka. Ma capacitor awa amagwiritsidwa ntchito kwambiri mu ma motor controllers, snubbers, switch mode power supplies, ndi ma monitors.

Mapeto

Kudalirika ndi moyo wa ntchito wa ma capacitor kumadalira kwambiri makhalidwe awo odzichiritsa okha. Zigawo zopanda mphamvu zokhala ndi makhalidwe abwino odzichiritsa zokha zimakhala zodalirika kwambiri ndipo zimapereka moyo wautali wogwira ntchito. Makhalidwe abwino odzichiritsa okha a ma capacitor opanga mafilimu opangidwa ndi zitsulo amawonjezera kulimba kwawo ndikupangitsa kuti akhale oyenera kugwiritsidwa ntchito nthawi zambiri. Kuphatikiza apo, zigawo zolimba izi zimalephera kugwira ntchito momasuka, ndipo izi zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito zomwe zimafuna zigawo zomwe zili ndi njira yotetezeka yolephera.

Kumbali ina, mphamvu yodzichiritsira yokha ya ma capacitor a filimu yachitsulo imapangitsa kuti chinthu chotayika chiwonjezeke ndipo mphamvu yonse yamagetsi itsike. Kupatula mphamvu zabwino zodzichiritsira yokha, ma capacitor ambiri a filimu yachitsulo amaperekanso mphamvu yowononga kwambiri komanso mphamvu yayikulu ya voliyumu.

Kuti mudziwe zambiri za capacitor ya filimu, chonde tsitsani katalogu ya CRE.