Maitiro ekudzikisa kurasikirwa kweinductor core | GETWELL

Isu tinoziva kuti inductance musimboti chigadzirwa chichashandiswa mune zvakawanda zvigadzirwa zvemagetsi, zvigadzirwa zvemagetsi zvinoburitsa kumwe kurasikirwa mukushandiswa, uye inductance musimboti ndizvozvo. Kana kurasikirwa kweinductor core kwakakura zvakanyanya, zvinokanganisa hupenyu hwebasa reiyo inductor core.

Hunhu hweinductor core kurasikirwa (kunyanya kusanganisira hysteresis kurasikirwa uye eddy ikozvino kurasikirwa) ndeimwe yeakanyanya kukosha zviratidzo zvemagetsi zvinhu, izvo zvinokanganisa uye kunyange kuona kushanda zvakanaka, kukwira kwekushisa uye kuvimbika kwemuchina wese.

Inductor core kurasikirwa

1. Hysteresis kurasikirwa

Kana iyo yepakati zvinhu iine magineti, kune zvikamu zviviri zvesimba zvinotumirwa kune iyo magineti, imwe yacho inoshandurwa kuita simba ringaite, ndiko kuti, kana yekunze magnetization ikozvino yabviswa, iyo magineti simba rinogona kudzoserwa kudunhu. , nepo chimwe chikamu chinopedzwa nekukunda friction, iyo inonzi hysteresis kurasikirwa.

Nharaunda yechikamu chemumvuri chemagnetization curve inomiririra kurasikirwa kwesimba kunokonzerwa nehysteresis mune magnetization process yemagnetic core mukushanda kutenderera. Iwo maparamendi anokanganisa nzvimbo yekurasikirwa ndeye yakanyanya kushanda magineti flux density B, iyo yakanyanya magineti kusimba H, iyo remanence Br uye inomanikidza simba Hc, umo iyo magineti flux density uye magineti simba remunda zvinoenderana nekunze kwenzvimbo yemagetsi mamiriro uye core size parameters, nepo Br neHc zvinoenderana nemidziyo yezvinhu. Kune yega yega nguva yemagineti yeinductor core, zvinodikanwa kurasikirwa nesimba rakaenzana nenzvimbo yakakomberedzwa neiyo hysteresis loop. iyo yakakwira frequency, iyo yakakura kurasikirwa kwesimba, iyo yakakura iyo magineti induction swing iri, yakakura nzvimbo yakavharirwa, iyo yakakura kurasikirwa kwehysteresis.

2. Eddy ikozvino kurasikirwa

Kana iyo AC voltage yawedzerwa kune iyo magineti musimboti coil, iyo yekunakidzwa ikozvino inoyerera kuburikidza necoil, uye ese magineti flux anogadzirwa nekunakidzwa ampere kutendeuka anopfuura nepakati magineti musimboti. Iyo magineti musimboti pachayo ndeye conductor, uye ese magineti flux akatenderedza muchinjiko chikamu cheiyo magineti musimboti akabatanidzwa kugadzira imwe-inotendeuka yechipiri coil. Nekuti iyo resistivity yemagnetic core material haina magumo, kune kumwe kupokana kwakatenderedza pakati, uye iyo induced voltage inoburitsa ikozvino, kureva, eddy current, iyo inoyerera kuburikidza nekupikisa uku, zvichikonzera kurasikirwa, ndiko kuti, kurasikirwa kwezvino.

3. Kurasikirwa kwasara

Iko kurasikirwa kwasara kunokonzerwa nemagnetization relaxation effect kana magnetic hysteresis effect. Iko kunonzi kuzorora kunoreva kuti mukuita kwemagnetization kana anti-magnetization, iyo magnetization mamiriro haachinjike pakarepo kusvika kune yekupedzisira mamiriro nekuchinja kwe magnetization intensity, asi inoda maitiro, uye iyi "nguva mhedzisiro" ndiyo inokonzera kurasikirwa kwasara. Iyo inonyanya muyepamusoro-frequency 1MHz pamusoro pekurasikirwa kwekuzorodza uye kutenderera magineti resonance uye zvichingodaro, mukuchinja kwemagetsi mazana eKHz emagetsi emagetsi, chikamu chekurasikirwa kwakasara kwakadzikira zvakanyanya, chinogona kuregererwa.

Paunenge uchisarudza yakakodzera magineti musimboti, akasiyana macurves uye frequency maitiro anofanirwa kutariswa, nekuti iyo curve inosarudza yakakwira frequency kurasikirwa, saturation curve uye inductance yeinductor. Nekuti iyo eddy iripo kune rumwe rutivi inokonzeresa kurasikirwa, inokonzeresa kuti magineti apise, uye inokonzera iyo excitation ikozvino kuti iwedzere, kune rimwe divi inoderedza inoshanda magineti conduction nzvimbo yeiyo magineti core. Naizvozvo, edza kusarudza magineti zvinhu zvine yakakwira resistivity kana muchimiro chetambo yakatenderedzwa kuderedza eddy ikozvino kurasikirwa. Naizvozvo, iyo itsva platinum zvinhu NPH-L inokodzera yakaderera kurasikirwa simbi poda cores yeakakwira frequency uye yakakwirira simba zvishandiso.

Iko kurasikirwa kwepakati kunokonzerwa nealternating magnetic field mu core material. Kurasikirwa kunokonzerwa nechimwe chinhu ibasa rekushanda frequency uye yakazara flux swing, nokudaro kuderedza kunobudirira conduction kurasikirwa. Iko kurasikirwa kwepakati kunokonzerwa neiyo hysteresis, eddy ikozvino uye yakasara kurasikirwa kweiyo core material. Naizvozvo, iyo yakakosha kurasikirwa ndiyo huwandu hwekurasikirwa kwe hysteresis, kurasikirwa kwazvino eddy uye kurasikirwa kweremanence. Hysteresis kurasikirwa ndiko kurasikirwa kwesimba kunokonzerwa nehysteresis, iyo inofananidzwa nenzvimbo yakakomberedzwa ne hysteresis loops. Kana iyo magineti inopfuura nepakati pepakati inochinja, eddy ikozvino inoitika mukati, uye kurasikirwa kunokonzerwa ne eddy ikozvino kunonzi eddy ikozvino kurasikirwa. Kurasikirwa kwasara ndiko kurasikirwa kwese kunze kwekurasikirwa kwehysteresis uye kurasikirwa kwazvino eddy.