Cov hluav taws xob ntawm lub qag hauv cov cav yog ib qho teeb meem uas feem ntau ua rau muaj kev puas tsuaj sai sai thiab kev kho kim heev. Kev nkag siab txog cov ua rau muaj cov hluav taws xob ntawm lub qag thiab yuav ua li cas tiv thaiv thiab kho lawv yog qhov tseem ceeb rau kev tswj hwm kev ua haujlwm zoo thiab lub neej ntev ntawm cov kab ke ntawm lub cav.
Qhov hluav taws xob ntawm lub ncej yog qhov hluav taws xob uas ntws los ntawm lub cev muaj zog thiab tuaj yeem tshwm sim vim ntau yam xws li qhov hluav taws xob nce siab, qhov hluav taws xob tsis sib npaug, thiab kev hloov pauv zaus siab. Qhov xwm txheej no tuaj yeem ua rau lub cev muaj zog cov kabmob, cov ncej thiab lwm yam khoom tseem ceeb puas tsuaj, thaum kawg ua rau lub sijhawm tsis ua haujlwm thiab cov nqi kho ntxiv.
Cov cavtuaj yeem tsim cov hluav taws xob ntawm lub cev muaj zog vim ntau yam laj thawj. Ib qho ntawm cov laj thawj tseem ceeb yog qhov muaj cov capacitance stray ntawm stator thiab rotor windings, uas tuaj yeem tsim txoj hauv kev rau cov hluav taws xob ntws los ntawm lub cev muaj zog. Tsis tas li ntawd, cov hluav taws xob nce siab thiab cov hluav taws xob tsis sib npaug hauv lub cev muaj zog kuj tseem tuaj yeem ua rau cov hluav taws xob ntawm lub cev muaj zog tshwm sim.
Yuav kom tiv thaiv cov hluav taws xob ntawm lub ncej kom tsis txhob tshwm sim, yuav tsum muaj cov txheej txheem txo qis kom tsim nyog. Ib txoj hauv kev zoo yog los nruab ib lub cuab yeej av ntawm lub ncej xws li txhuam av lossis lub nplhaib tiv thaiv kabmob. Cov khoom siv no muab txoj hauv kev qis-impedance rau cov hluav taws xob ntws, ua kom cov hluav taws xob tig mus deb ntawm lub cev muaj zog thiab tiv thaiv kev puas tsuaj rau cov kabmob.
Ntxiv rau kev tiv thaiv ua ntej, nws tseem ceeb heev rau kev daws cov teeb meem tam sim no hauv lub cev muaj zog. Kev daws teeb meem tam sim no ntawm lub cev muaj zog suav nrog kev txiav txim siab qhov ua rau muaj teeb meem thiab ua cov kauj ruam kho. Qhov no yuav suav nrog kev daws teeb meem tsis sib npaug ntawm lub zog, kev teeb tsa lub kaw lus rwb thaiv tsev, lossis kev txhim kho lub cev muaj zog lub kaw lus av.
Kev saib xyuas thiab saib xyuas cov tshuab hluav taws xob tsis tu ncua kuj tseem ceeb heev rau kev nrhiav thiab daws cov teeb meem tam sim no ntawm lub qhov (shaft current) ua ntej lawv loj hlob tuaj. Los ntawm kev ua kev tshuaj xyuas tsis tu ncua thiab siv cov kev ntsuas kev saib xyuas tiv thaiv xws li kev siv roj thiab kev saib xyuas kub, cov teeb meem tam sim no ntawm lub qhov (shaft current) uas yuav tshwm sim tuaj yeem txheeb xyuas thiab daws tau thaum ntxov.
Hauv kev xaus lus, kev nkag siab txog qhov ua rau muaj hluav taws xob hauv lub cev muaj zog thiab kev siv cov kev ntsuas tiv thaiv yog qhov tseem ceeb rau kev tswj hwm kev ntseeg tau thiab kev ua haujlwm zoo ntawm cov tshuab hluav taws xob. Los ntawm kev daws cov hauv paus ntsiab lus thiab kev siv cov txheej txheem txo qis kom zoo, cov teebmeem tsis zoo ntawm hluav taws xob hauv lub cev muaj zog tuaj yeem txo qis, thaum kawg ua rau kev ua haujlwm ntawm lub cev muaj zog zoo dua thiab txo cov nqi kho.
Lub sijhawm tshaj tawm: Lub Yim Hli-20-2024