Unganciphisa kanjani ukulahleka kwe-inductor core | ULULAME

Siyazi ukuthi i - inductance core ingumkhiqizo ozosetshenziswa emikhiqizweni eminingi ye-elekthronikhi, imikhiqizo ye-elekthronikhi izokhiqiza ukulahlekelwa okuthile ngesikhathi sokusebenzisa, futhi indikimba ye- inductance . Uma ukulahlekelwa kwe-inductor core kukukhulu kakhulu, kuzothinta impilo yesevisi ye-inductor core.

Isici sokulahlekelwa kwe-inductor core (ikakhulukazi kuhlanganise nokulahlekelwa kwe-hysteresis kanye nokulahlekelwa kwamanje kwe-eddy) kungenye yezinkomba ezibaluleke kakhulu zezinto zamandla, ezithinta futhi zinqume ngisho nokusebenza kahle kokusebenza, ukunyuka kwezinga lokushisa nokuthembeka kwawo wonke umshini.

Ukulahlekelwa okuyinhloko kwe-Inductor

1. Ukulahlekelwa yi-Hysteresis

Lapho izinto eziwumgogodla zisebenza uzibuthe, kunezingxenye ezimbili zamandla athunyelwa endaweni kazibuthe, enye yazo iguqulwa ibe amandla angaba namandla, okungukuthi, lapho kususwa amandla kazibuthe angaphandle, amandla kazibuthe angabuyiselwa kumjikelezo. , kuyilapho enye ingxenye idliwa ukunqoba ukungqubuzana, okubizwa ngokuthi ukulahlekelwa kwe-hysteresis.

Indawo yengxenye yesithunzi yejika lamagnetization imelela ukulahlekelwa kwamandla okubangelwa i-hysteresis enqubweni ye-magnetization yengqikithi kazibuthe emjikelezweni wokusebenza. Amapharamitha athinta indawo yokulahlekelwa wubukhulu obusebenzayo bukazibuthe obuguquguqukayo obunamandla B, amandla kazibuthe aphezulu kakhulu H, i-remanence Br namandla aphoqayo Hc, lapho ukuminyana kazibuthe namandla kazibuthe kuncike ezimweni zensimu kagesi yangaphandle kanye amapharamitha kasayizi oyinhloko, kuyilapho i-Br ne-Hc incike ezintweni ezibonakalayo. Isikhathi ngasinye samagnetization we-inductor core, kuyadingeka ukulahlekelwa amandla ngokulingana nendawo ezungezwe i-hysteresis loop. lapho imvamisa iphezulu, amandla amakhulu okulahlekelwa, ukushwibeka kukazibuthe kukhulu, indawo ebiyelwe inkulu, ukulahleka kwe-hysteresis kukhulu.

2. Ukulahlekelwa kwamanje kuka-Eddy

Lapho i-voltage ye-AC yengezwa kukhoyili kazibuthe, amandla amanje avusa amadlingozi ageleza kukhoyili, futhi wonke amandla kazibuthe akhiqizwa i-ampere turn ejabulile adlula kumongo kazibuthe. Isizinda kazibuthe ngokwaso siyi-conductor, futhi yonke i-flux kazibuthe ezungeze ingxenye yesiphambano somongo kazibuthe ixhunywe ukwenza ikhoyili yesibili yokujika okukodwa. Ngenxa yokuthi i-resistivity ye-magnetic core material ayipheli, kukhona ukumelana okuthile okuzungezile, futhi i-voltage eyenziwe ikhiqiza okwamanje, okungukuthi, i-eddy current, egeleza ngalokhu kumelana, okubangela ukulahlekelwa, okungukuthi, ukulahlekelwa kwamanje kwe-eddy.

3. Ukulahlekelwa okusele

Ukulahlekelwa okusele kubangelwa umphumela wokuphumula wamagnetization noma umphumela we-magnetic hysteresis. Okubizwa ngokuthi ukuphumula kusho ukuthi ohlelweni lwe-magnetization noma i-anti-magnetization, isimo samagnetization asishintshi ngokushesha esimweni saso sokugcina ngokushintsha kwamandla kazibuthe, kodwa kudinga inqubo, futhi lokhu "umphumela wesikhathi" yimbangela ukulahlekelwa okusele. Ikakhulukazi imvamisa ephezulu engu-1MHz ngaphezu kokulahlekelwa okuthile kokukhululeka nokuzulazula kazibuthe nokunye, ekushintsheni kwamandla kagesi amakhulu e-KHz, ingxenye yokulahlekelwa okuyinsalela iphansi kakhulu, cishe ingashaywa indiva.

Lapho ukhetha i-core magnetic efanelekile, ama-curve ahlukene kanye nezici zemvamisa kufanele kucatshangelwe, ngoba ijika linquma ukulahleka kwemvamisa ephezulu, ijika lokugcwala kanye ne-inductance ye-inductor. Ngenxa yokuthi i-eddy current ngakolunye uhlangothi ibangela ukulahlekelwa ukumelana, ibangela ukuthi izinto zikazibuthe zishise, futhi ibangele ukwanda kwamanje okuvusa amadlingozi, ngakolunye uhlangothi inciphisa indawo yokusebenza kazibuthe esebenzayo yengqikithi kazibuthe. Ngakho-ke, zama ukukhetha izinto kazibuthe ezinokumelana okuphezulu noma ngendlela yomugqa ogoqiwe ukuze unciphise ukulahleka kwamanje kwe-eddy. Ngakho-ke, into entsha ye-platinum i-NPH-L ifaneleka ukulahlekelwa okuphansi kwe-powder cores yensimbi yemvamisa ephezulu kanye namadivayisi anamandla aphezulu.

Ukulahlekelwa okuyinhloko kubangelwa inkambu kazibuthe eshintshanayo endaweni eyinhloko. Ukulahlekelwa okubangelwa into ethile kuwumsebenzi wemvamisa yokusebenza kanye nokushwibeka okuphelele kwe-flux, ngaleyo ndlela kunciphisa ukulahleka kokuqhuba okusebenzayo. Ukulahlekelwa okuyinhloko kubangelwa i-hysteresis, i-eddy current kanye nokulahlekelwa okuyinsalela kwezinto eziyinhloko. Ngakho-ke, ukulahlekelwa okuyinhloko kuyisamba sokulahlekelwa kwe-hysteresis, ukulahlekelwa kwamanje kwe-eddy kanye nokulahlekelwa kwe-remanence. Ukulahleka kwe-Hysteresis ukulahlekelwa amandla okubangelwa i-hysteresis, elingana nendawo ezungezwe amaluphu e-hysteresis. Lapho inkambu kazibuthe edlula kumongo ishintsha, i-eddy current iyenzeka kumongo, futhi ukulahlekelwa okubangelwa i-eddy current kubizwa ngokuthi ukulahlekelwa kwamanje kwe-eddy. Ukulahlekelwa okuyinsalela yikho konke ukulahlekelwa ngaphandle kokulahlekelwa yi-hysteresis nokulahlekelwa kwamanje kwe-eddy.