Induction Cua Sov Sab Hauv Tsev

Induction Cua Sov Yooj Yim

Induction cua sov tshwm sim nyob rau hauv ib qho khoom siv hluav taws xob (tsis tas yuav muaj cov hlau nplaum sib xyaw) thaum cov khoom raug tso rau hauv qhov chaw sib txawv. Induction cua sov yog vim lub hysteresis thiab eddy-tam sim no poob.

Kev pib siv cua sov tsimInduction cua sov yog txheej txheem ntawm kev ua cua sov ib qho khoom siv hluav taws xob (feem ntau yog hlau) los ntawm kev siv hluav taws xob, los ntawm cov cua sov tsim nyob rau hauv lub nruas los ntawm cov dej taws xob. Lub tshuab cua sov siv hluav taws xob muaj lub tshuab siv hluav taws xob thiab hluav taws xob oscillator uas dhau los ua qhov siab hloov tam sim no (AC) los ntawm lub tshuab hluav taws xob. Kev hloov pauv ceev nrawm nkag mus rau hauv qhov khoom, ua kom muaj hluav taws xob hluav taws xob sab hauv tus neeg xyuas pib, hu ua eddy currents. Lub eddy dej ntws mus dhau ntawm qhov tsis kam ntawm cov khoom kom sov nws los ntawm Joule cua sov. Hauv cov khoom siv hlau tshuab (thiab ferrimagnetic) zoo li hlau, cua sov kuj tseem yuav tsim los ntawm kev sib nqus hysteresis poob. Qhov ntau zaus ntawm kev siv tam sim no nyob ntawm yam khoom loj, cov khoom siv hom, txuas (ntawm cov hlau txuas ua haujlwm thiab cov khoom yuav raug rhaub) thiab qhov tob tob.

Hysteresis losses tsuas yog tshwm sim hauv cov khoom sib nqus xws li hlau, xauv npauj npauj, thiab lwm cov neeg tsawg. Hysteresis poob hais tias qhov no yog tshwm sim los ntawm kev sib txhuam ntawm molecules thaum cov khoom magnetized thawj zaug nyob rau hauv ib qho kev coj, thiab tom qab ntawd ces nyob rau lwm. Cov lwg me me yuav suav tau tias yog cov hlau nplaum loj uas tig rov los nrog txhua qhov kev hloov ntawm kev sib nqus. Ua haujlwm (zog) yuav tsum tau xa lawv ib ncig. Lub zog hloov mus ua cua sov. Tus nqi ntawm kev siv zog (lub hwj chim) nce nrog qhov kev nce qib ntawm qhov hloov (zaus).

Kev hloov ntawm kev ploj ziag no tshwm sim hauv cov khoom siv hauv kev sib txawv ntawm kev sib nqus. Qhov no ua rau lub npe, txawm tias cov ntaub ntawv tsis muaj ib yam ntawm cov khoom sib nqus feem ntau yog txuam nrog hlau thiab hlau. Piv txwv yog tooj liab, tooj dag, txhuas, zirconium, nonmagnetic stainless hlau, thiab uranium. Eddy currents yog cov hluav taws xob cov hluav taws xob uas tau hloov los ntawm kev hloov ua cov khoom siv hauv cov khoom. Raws li lawv lub npe qhia, lawv tshwm sim los ntawm ib ncig ntawm cov swirls ntawm eddies hauv ib qho khoom loj ntawm cov khoom. Kev nyuab tshaj plaw yog qhov tseem ceeb tshaj li qhov muaj kev puas tsuaj ntawm cov cua kub qag induction. Nco ntsoov tias induction cua sov yog siv rau nonmagnetic cov ntaub ntawv, qhov twg tsis muaj hysteresis losses tshwm sim.

Induction cua sov kev tshawb xavRau cov cua sov ntawm cov cua ntawm qhov sib zog, forging, yaj, los yog lwm yam hom phiaj uas yuav tsum tau kub dua Curie qhov kub, peb tsis tuaj yeem vam khom nqi. Hlau loses nws cov khoom sib nqus saum toj no kub no. Thaum cov hlau rhuab hauv qab Curie taw tes, qhov txiaj ntsig ntawm hysteresis feem ntau yog li ntawd me me uas nws yuav tsum tau ignored. Rau tag nrho cov tswv yim, kuv2R ntawm cov kab dej ntawm tus cwj pwm yog tib txoj kev uas hluav taws xob ua hluav taws xob xa tau rau hauv tshav kub rau kev siv cua sov.

Ob qho yooj yim rau induction cua sov tshwm sim:

  • Ib tug hloov magnetic teb
  • Ib qho khoom siv hluav taws xob uas muab tso rau hauv cov hlau nplaum