Yuav kom txhim kho qhov zoo ntawm lub cev muaj zog, nyob rau xyoo tas los no, lub suab nrov ntawm lub cev muaj zog tau suav nrog hauv ib qho ntawm cov ntsuas kev ntsuas zoo, tshwj xeeb tshaj yog rau qhov chaw ua haujlwm ntawm lub cev muaj zog thiab kev sib cuag ntawm tib neeg ze rau qhov xwm txheej, lub suab nrov ntawm lub cev muaj zog tau dhau los ua qhov yuav tsum tau ntsuas tseem ceeb heev.
Yuav kom tswj tau qhovlub cev muaj zog asynchronoussuab nrov, ntxiv rau qhov tsim ntawm lub stator thiab rotor qhov nrog rau kev xaiv qhov tsim nyog ntawm lub stator thiab rotor qhov tshwj tsis yog qhov slant qhov tuaj yeem siv los txo qhov suab nrov electromagnetic ntawm lub cev muaj zog. Tab sis qhov ntau npaum li cas qhov slope yog qhov tsim nyog dua, kev sim ntxiv yog qhov yuav tsum tau ua kom paub tseeb.
Feem ntau, qhov nqes ntawm lub rotor ntawm cov asynchronous motors tuaj yeem coj los ua ib qho stator hniav pitch, uas kuj tuaj yeem ua tau raws li qhov yuav tsum tau ua. Txawm li cas los xij, txhawm rau txhim kho lub suab nrov ntawm lub cev muaj zog, nws yog qhov tsim nyog los tshawb nrhiav qhov nqes ntawm qhov zoo tshaj plaws, uas xav tau ntau qhov kev xam thiab kev txheeb xyuas.
Los ntawm qhov pom ntawm kev tsim khoom, kev tsim khoom thiab kev ua tiav ntawm lub cev muaj zog ncaj qha yuav yooj yim heev, tab sis thaum tsim nyog, nws yuav tsum tau ua kom lub stator lossis rotor torsion. Lub stator torsion nyuaj heev, yog li ntawd, feem ntau, lub rotor tilting. Feem ntau, lub rotor torsion raug ua los ntawm kev ua haujlwm ntawm lub qhov (keyway) kom ua tiav, cov khoom siv siab heev, siv cov kauv punching, hauv cov txheej txheem tsim khoom ntawm lub rotor core kom ua tiav.
Cov ua rau muaj suab nrov electromagnetic thiab kev tiv thaiv
Lub suab nrov ntawm lub cev muaj zog yeej ib txwm yog ib qho teeb meem nyuaj rau daws, nws feem ntau yog tsim los ntawm electromagnetic, mechanical, thiab ventilation peb qho laj thawj. Lub suab nrov electromagnetic hauv lub cev muaj zog asynchronous yog vim muaj cov dej ntws ntawm stator thiab rotor hauv qhov sib txawv ntawm huab cua uas tau tsim los ntawm kev sib cuam tshuam ntawm harmonic magnetic field thiab electromagnetic force wave uas tshwm sim los ntawm kev co ntawm lub core yoke, yuam kom muaj kev co ntawm ib puag ncig.kev co ntawm huab cuathiab tsim tawm. Qhov ua rau tseem ceeb yog vim qhov tsis haum ntawm qhov chaw, stator thiab rotor eccentricity lossis qhov sib txawv ntawm huab cua me dhau.
Suab nrov electromagnetic yog tshwm sim los ntawm kev sib nqus sib nqus uas ua rau muaj kev hloov pauv hauv lub sijhawm thiab qhov chaw thiab raug ua los ntawm ntau qhov ntawm lub cev muaj zog. Yog li ntawd, rau cov cav asynchronous, cov ua rau muaj suab nrov electromagnetic suav nrog:
● Cov nthwv dej radial hauv qhov chaw sib nqus ntawm huab cua ua rau muaj kev hloov pauv radial thiab kev co ntawm lub stator thiab rotor.
● Cov nthwv dej radial uas muaj cov harmonics siab hauv qhov sib nqus ntawm huab cua ua rau lub stator thiab rotor cores, ua rau lawv hloov pauv radial thiab co tas li.
● Qhov kev hloov pauv ntawm cov kev txiav txim sib txawv ntawm lub stator core muaj cov zaus sib txawv, thiab resonance tshwm sim thaum lub zaus ntawm lub zog radial nthwv dej ze rau lossis sib npaug rau ib qho ntawm cov zaus intrinsic ntawm lub core.
Qhov kev hloov pauv ntawm stator ua rau huab cua nyob ib puag ncig co, thiab feem ntau ntawm cov suab nrov electromagnetic yog suab nrov.
Thaum lub hauv paus yog saturated, qhov thib peb harmonic tivthaiv yog nce, thiab lub suab nrov electromagnetic nce.
Cov qhov stator thiab rotor yog qhib tag nrho, thiab muaj ntau "qhov qhib nthwv dej" tsim nyob rau hauv qhov kev ua ntawm lub zog nthwv dej tseem ceeb hauv qhov sib txawv ntawm huab cua, thiab qhov me dua qhov sib txawv ntawm huab cua, qhov dav dua qhov sib txawv, qhov loj dua lawv qhov amplitude.
Yuav kom tsis txhob muaj teeb meem, lub chaw ua haujlwm nyob rau theem tsim ntawm cov khoom los ntawm qee txoj kev zoo ntawm kev txhim kho, xws li: xaiv qhov sib nqus flux density tsim nyog, xaiv hom winding tsim nyog thiab tus lej ntawm cov kev cuam tshuam, nce tus lej ntawm stator punching slots, txo cov coefficient faib harmonic ntawm stator windings, kev ua tiav ntawm lub cev muaj zog stator-rotor cua sib txawv, xaiv lub stator thiab rotor groove nrog lub rotor slant groove, kev siv lub rotor, thiab lwm yam kev ntsuas tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Rau Hli-14-2024