A common mode inductorzvinoreva kuti makoiri maviri akakuvadzwa papakati pesimbi mumwechete, aine mahwindi akapesana, nhamba yekutenderera nechikamu chimwe chete. Inowanzo shandiswa mukuchinja magetsi kusefa zvakajairwa-modhi electromagnetic kupindira masiginecha, EMI mafirita anoshandiswa kudzvanya mafungu emagetsi anogadzirwa neakakwira-kumhanya masaini mitsara kubva pakupenya kunze. Iyo yakajairika modhi inductance pakuiswa kweiyo module yemagetsi kazhinji kudzikisa radiation uye yakakwirira frequency yakajairika modhi ruzha. Zvisinei, huru yakajairika-mode inductance ine maitiro akanaka ekuderedza kukanganiswa kwepasi-frequency, uye yakakwirira-frequency inogona kuipa, asi kunzwa kuduku kune hurombo hwekudzvinyirira hunoita pakukanganiswa kwepasi-frequency.
Iyo ine pachena kudzvinyirira mhedzisiro pane yakajairika mode ruzha. Nheyo yekushanda ndeyekuti kana yakajairika mode ikozvino ichipfuura nepakati pechikamu, inductances yeaviri inductors anopindirana. Asi kune yekusiyanisa modhi ruzha, iwo maviri inductances akaenzana nekutora mutsauko, kukosha kweiyo inductance kunodzikira, uye kudzvanyirira mhedzisiro kuchaderera.
Saizi yeyakajairwa modhi inductance ichakanganisa zvakananga EMC kuita. Basa guru nderekuparadzanisa iyo yakajairwa modhi siginecha uye attenuate yekunze yakajairika modhi kupindira, nekudaro kuderedza kukanganiswa kwemagetsi. Iyo inogona zvakare kuderedza iyo yemukati yakajairika modhi siginecha uye kuderedza kukanganiswa kwemagetsi grid. Zvisinei, huru yakajairika-mode inductance ine maitiro akanaka ekuderedza kukanganiswa kwepasi-frequency, uye yakakwirira-frequency inogona kuipa, asi kunzwa kuduku kune hurombo hwekudzvinyirira hunoita pakukanganiswa kwepasi-frequency.
Zvatinowanzo shandisa pamagumo ekuisa emagetsi module ndeye x huwandu, y huwandu uye zvakajairika modhi inductance. Iyo simba ine yakaderera impedance kune iyo chiratidzo, iyo inoshanda seyekupfuura uye yekubatanidza chiratidzo. Iyo inductance yakakwira impedance kune iyo chiratidzo uye inoita basa mukuratidza uye kutora yakakwirira-frequency kupindira masaini.
Kupindira pakati petambo mbiri dzemagetsi pasi kunonzi common mode interference, uye kupindira kwetambo dzemagetsi kunonzi differential mode interference. Kana iyo inductance uye capacitance zvakasanganiswa kuita sefa, iyo yekusefa iri nani, uye frequency bhendi uko inductance uye capacitance inoita basa. Uyewo zvakasiyana. Iyo Y capacitor uye Y capacitor inoita basa mukusefa yakajairika mode kupindira, uye iyo X capacitor inonyanya kuita senge pfupi-yedunhu chiratidzo, ichidzikisa nzira iyo iyo yekusiyanisa modhi chiratidzo inoyerera, nekudaro ichidzikisa oscillation inokonzerwa neparasitic paramita mu. dunhu uye zvichikonzera high-frequency emission.
Kana iyo inductance kana capacitance inobviswa mukugadzira, chikamu chakasara chicharamba chichishanda, asi mhedzisiro yacho ichave yakanyanya kuipa. Kazhinji kutaura, iyo yakakura iyo yakajairika-modhi impedance, zviri nani. Paunosarudza yakajairika-modhi inductor, sarudzo inonyanya kuenderana neiyo impedance frequency curve. Panguva imwecheteyo, kutarisisa kunofanirwa kubhadharwa kune pesvedzero yekusiyanisa mode impedance pachiratidzo.
Nguva yekutumira: Aug-16-2021
