Dab tsi yog Qhov Ua Rau Transformer Overcurrent?

Yog hais tias qhov hu ua overcurrent yog hais txog qhov overcurrent ntawm transformer input tam sim no, tej zaum yuav muaj cov hauv qab no yog vim li cas:

1. Lub transformer yog saturated. Raws li peb txhua tus paub, transformer winding yuav inductive nyob rau hauv alternating tam sim no, nws alternating impedance yog loj, thiab nws impedance yog proportional rau cov permeability. Nyob rau tib lub sijhawm, cov khoom sib nqus muaj qhov sib nqus sib nqus flux ceev. Yog hais tias lub transformer tsis tsim kom zoo los yog qhov kev tsis ncaj ncees tshwm sim, qhov ua hauj lwm sib nqus ntawm lub transformer yuav siab dhau. Thaum nws yog ntau tshaj qhov saturation magnetic density, qhov sib nqus permeability yuav poob mus rau 0. Qhov seem kuj yog sib npaug ncaj qha rau kev txuas ncaj qha rau qhov zoo thiab qhov tsis zoo ntawm cov khoom siv hluav taws xob rau ib lub xaim, thiab qhov tshwm sim tuaj yeem xav txog. Nyob rau hauv lub switching fais fab mov, qhov tshwm sim no feem ntau tshwm sim nyob rau hauv lub laub-rub topology. Feem ntau, lub capacitor txuas nrog hauv cov kab ntawm thawj sab los daws qhov teeb meem sib nqus sib nqus.

2. Thauj khoom luv luv! !

3. Cov rwb thaiv tsev ntawm cov transformer windings tsis ua kom zoo, thiab muaj ib qho luv luv ntawm cov lem los yog cov thawj thiab theem nrab windings.

4. Qee cov khoom siv tseem ceeb, piv txwv li, tus qauv tsim tsis xav txog qhov cuam tshuam ntawm DC kev tsis ncaj ncees thiab qhov kub ntawm qhov permeability. Nyob rau hauv qhov kub thiab txias DC siab, qhov impedance ntawm transformer winding yog txo thiab overcurrent tshwm sim.