Yakajairwa Modhi Yazvino: Peya yezviratidzo (kana ruzha) ine hukuru hwakafanana negwara pane maviri emitsara yemasaini ekusiyanisa. Mudunhu.Kazhinji, ruzha rwepasi rinowanzofambiswa nenzira ye common mode current, saka inonziwo common mode noise.
Kune nzira dzakawanda dzekudzvinyirira common-mode ruzha. Pamusoro pekudzikisira yakajairika-modhi ruzha kubva kunobva, iyo inonyanya kushandiswa nzira yekudzvinyirira yakajairika-modhi ruzha ndeye kushandisa yakajairwa-modhi inductors kusefa kunze kwakajairwa-modhi ruzha, ndiko kuti, kuvharira-yakajairika-modhi ruzha kubva kune chinangwa. circuit. . Ndiko kuti, yakajairika mode choke mudziyo wakabatana munhevedzano mumutsara. Chinangwa cheichi ndechekuwedzera impedance yeyakajairika-mode loop kuitira kuti yakajairika-modhi ikozvino iparadzwe uye yakavharwa (inoratidzirwa) nekudzipwa, nekudaro ichidzvinyirira yakajairika-modhi ruzha mumutsara.
Nheyo dzeCommon Mode Chokes kana Inductors
Kana mapeya emakoiri ari munzira imwechete akakuvadzwa pane rengi remagineti rakagadzirwa neimwe magineti, kana alternating current ichipfuura, magineti flux inogadzirwa mumakoiri nekuda kweelectromagnetic induction. Kune masaini emhando yekusiyanisa, iwo anogadzirwa magineti fluxes ehukuru hwakafanana uye akapesana munzira, uye anodzima mumwe nemumwe kunze, saka iyo yekusiyanisa modhi impedance inogadzirwa nemagnetic mhete idiki kwazvo; nepo kune zvakajairika masaini masaini, ukuru uye kutungamira kweiyo inogadzirwa magineti fluxes akafanana, uye maviri akaiswa pamusoro peumwe neumwe. Iyo magineti mhete ine yakakura yakajairika mode impedance. Ichi ficha chinoita kuti yakajairika modhi inductor isanyanya pesvedzero pane yekusiyanisa modhi siginecha uye ine yakanaka kusefa kuita kune yakajairika modhi ruzha.
(1) Iyo yekusiyanisa modhi ikozvino inopfuura neyakajairwa modhi coil, kutungamira kwemitsara yemagineti yakatarisana, uye iyo induced magineti inodzikira. Inogona kuonekwa kubva kune nzira yemitsara yemagineti mumufananidzo unotevera - museve wakasimba unoratidza kutungamirirwa kwezvino, uye mutsara wedoti unoratidza kutungamirirwa kwemagnetic field.
(2) Iyo yakajairwa modhi ikozvino inopfuura neyakajairwa modhi coil, kutungamira kwemitsara yemagineti yakafanana, uye iyo induced magineti inosimbiswa. Inogona kuonekwa kubva kune nzira yemitsara yemagineti mumufananidzo unotevera - museve wakasimba unoratidza kutungamirirwa kwezvino, uye mutsara wakajeka unoratidza kutungamirirwa kwemagnetic field.
Iyo inductance yeyakajairika mode coil inozivikanwawo seye self-inductance coefficient. Isu tinoziva kuti inductance kugona kugadzira magineti. Kune yakajairwa modhi coil kana yakajairika modhi inductance, kana iyo yakajairika modhi ikozvino ichiyerera kuburikidza necoil, sezvo kutungamira kwemagineti mitsara yakafanana, iyo leakage inductance haina kutariswa. Panyaya ye, iyo magineti flux inokwidziridzwa, uye musimboti ndeye mutual inductance. Iwo magineti emunda mitsetse inogadzirwa neiyo tsvuku coil mumufananidzo uri pazasi anopfuura nepakati pebhuruu coil, uye mitsara yemagineti inogadzirwa neblue coil inodarikawo nepakati peiyo tsvuku coil uye inonyengererana.
Kubva pakuona kweiyo inductance, iyo inductance zvakare yakapetwa kaviri, uye iyo flux yekubatanidza inomiririra iyo yakazara magineti flux. Kune common mode inductors, kana iyo magineti inoyerera yakapetwa kaviri yekutanga, nhamba yekutendeuka haichinji, uye ikozvino haichinji, zvino zvinoreva kuti Sezvo inductance ichiwedzerwa ne2 nguva, zvinoreva kuti yakaenzana magineti permeability. zvakapetwa kaviri.
Sei iyo yakaenzana yemagineti permeability yakapetwa kaviri? Kubva pane inotevera inductance formula, sezvo nhamba yekutendeuka N isingashanduke, iyo magineti yedunhu uye muchinjiko-chikamu nharaunda yemagineti musimboti inotemerwa nehukuru hwemuviri hweiyo magineti musimboti, saka haichinji, iyo chete. chinhu chiri magineti permeability. u yakapetwa kaviri, saka mamwe magineti flux anogona kugadzirwa
Naizvozvo, kana iyo yakajairika modhi ikozvino ichipfuura, iyo yakajairika modhi inductance inoshanda mune mutual inductance modhi. Pasi pekuita kweiyo mutual inductance, iyo yakaenzana inductance inowedzerwa nemutengo, saka iyo yakajairika mode inductance ichapetwa kaviri, saka ine mhedzisiro yakanaka pane yakajairika mode chiratidzo. Mhedzisiro yekusefa ndeyekuvharira iyo yakajairika modhi siginecha ine yakakura impedance uye kuidzivirira kuti ipfuure neyakajairwa modhi inductor, ndiko kuti, kudzivirira iyo chiratidzo kubva pakuendeswa kune inotevera nhanho yedunhu. Izvi zvinotevera inductive reactance ZL inogadzirwa neinductor.
Kuti unzwisise inductance ye common mode inductors in common mode mode, chikuru clue ndechekunzwisisa mutual inductance, ese magineti zvikamu, zvisinei kuti zita ripi, chero iwe uchibata shanduko yesimba remagineti uye woona hunhu hwe. iyo magnetic field inoshandura kuburikidza nechiitiko, zvichava nyore kunzwisisa, uye ipapo Tinofanira kugara tichibata magnetic field line, iyo ndiyo intuitive fomu yekunzwisisa kwedu kwemagnetic field. Fungidzira kuti zvisinei nepfungwa yezita rimwe chete kana zita rakasiyana kana mutual inductance kana iyo magnetic field phenomenon, isu tinogara tichidhirowa iyo magnetic field line kuti tivazive - tenzi "magnetic rod" yakatsanangurwa kare. Winding method".
Nguva yekutumira: Mar-16-2022
