Distribution Transformer Muaj Core Losses
Distribution transformers yog ib qho tseem ceeb ntawm cov kab hluav taws xob hluav taws xob, siv los txo qis qhov hluav taws xob siab ntawm cov kab sib txuas mus rau qhov qis dua qhov xav tau los ntawm cov tsev neeg thiab cov lag luam. Txawm li cas los xij, cov transformers no tsis yog 100% ua haujlwm tau zoo, thiab lawv tau poob thaum lub sijhawm hloov pauv. Ib qho ntawm cov ntsiab lus tseem ceeb ntawm cov kev poob no yog lub hauv paus ntawm lub transformer.
Cov tub ntxhais sib nqus ntawm lub tshuab hluav taws xob faib khoom yog tsim los ntawm cov ntawv laminated ntawm cov khoom sib nqus, xws li hlau lossis hlau, uas tau muab tso ua ke thiab qhov txhab nrog tooj liab hlau. Thaum ib qho alternating tam sim no ntws los ntawm cov thawj winding, nws tsim ib tug magnetic teb nyob rau hauv lub core. Daim teb no ces induces ib tug tam sim no nyob rau hauv lub thib ob winding, uas yog siv rau lub hwj chim rau lub load txuas.
Txawm li cas los xij, raws li cov hlau nplaum hloov pauv, nws ua rau cov khoom siv tseem ceeb hloov pauv nws lub xeev sib nqus sai. Qhov no ua rau cov eddy tam sim no raug tsim nyob rau hauv cov khoom tseem ceeb, uas ua rau muaj cua sov. Cov cua sov uas tsim los ntawm cov eddy tam sim no raug xa mus rau qhov poob ntawm cov tub ntxhais, thiab nws sawv cev rau ib feem tseem ceeb ntawm tag nrho cov kev poob hauv ib qho kev faib tawm.
Cov tub ntxhais poob tuaj yeem raug txo los ntawm kev siv cov khoom siv zoo nrog cov hlau nplaum hysteresis thiab eddy tam sim no poob. Tsis tas li ntawd, cov ntaub ntawv laminated tuaj yeem coated nrog cov ntaub ntawv insulating kom txo cov eddy tam sim no. Txawm li cas los xij, cov kev ntsuas no yuav tsum sib npaug tiv thaiv tus nqi nce ntawm cov khoom siv thiab cov txheej txheem tsim khoom.
Nws kuj tseem tsim nyog sau cia tias qhov kev poob qis tsis tas li thiab yuav txawv nyob ntawm qhov chaw thauj khoom thiab kev ua haujlwm zaus ntawm lub transformer. Yog li ntawd, qhov tseeb qauv thiab kev soj ntsuam ntawm cov tub ntxhais poob yog ib qho tseem ceeb rau optimize transformer tsim thiab kev ua tau zoo.
Hauv cov ntsiab lus, thaum faib cov khoom siv hluav taws xob yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm daim phiaj hluav taws xob, lawv tsis yog 100% ua haujlwm tau zoo thiab muaj kev poob thaum lub sijhawm hloov pauv. Kev poob tseem ceeb yog qhov tseem ceeb ntawm cov kev poob no, thiab kev siv zog yuav tsum tau ua kom txo tau lawv los ntawm kev siv cov khoom siv zoo thiab rwb thaiv tsev. Kev tsim qauv thiab kev txheeb xyuas ntawm cov tub ntxhais poob tseem yog qhov tseem ceeb rau kev txhim kho kev tsim cov khoom siv hluav taws xob thiab txhim kho kev ua haujlwm tag nrho.
