1. Hom kev tsheb ciav hlau hluav taws xob hloov tsheb lub cev muaj zog
Rail hluav taws xob hloov tsheb thauj khoom yog ib hom khoom siv rau kev tuav thiab kev thauj mus los. Lawv hom motors feem ntau muab faib ua ob pawg: DC motors thiab AC motors. DC motors yog qhov yooj yim thiab yooj yim rau kev tswj thiab tau siv dav hauv kev tsheb ciav hlau hluav taws xob hloov tsheb; AC motors muaj qhov zoo ntawm kev siv hluav taws xob thiab lub peev xwm thauj khoom, thiab tau siv dav hauv xyoo tas los no.
2. Lub hauv paus ntsiab lus ua haujlwm ntawm DC motors
DC electric tsheb motors yog ib hom khoom siv uas hloov hluav taws xob hluav taws xob rau hauv lub tshuab hluav taws xob. Thaum ncaj qha tam sim no dhau los ntawm armature winding, armature winding rotates nyob rau hauv qhov kev txiav txim ntawm lub magnetic teb, thiab cov xov hlau nyob rau hauv armature winding yuav induce ib tug induced muaj peev xwm nyob rau hauv lub magnetic teb, uas ua rau cov kev taw qhia ntawm lub armature winding tam sim no hloov, ua rau lub rotating magnetic teb nyob rau hauv lub armature. Ntawm qhov tod tes, lub rotating magnetic teb tsav lub armature tig, thiab ntawm qhov tod tes, nws cuam tshuam nrog cov hlau nplaum mus tas li kom lub cev muaj zog ua haujlwm ib txwm.
Muaj ob txoj kev tswj hwm rau DC motors: direct voltage tswj thiab PWM tswj. Kev tswj hluav taws xob ncaj qha tsis muaj txiaj ntsig thiab tsim nyog rau cov xwm txheej uas qhov ceev tsis hloov ntau; PWM tswj tuaj yeem ua tiav qhov sib npaug ntawm kev ua haujlwm siab thiab muaj peev xwm thauj khoom loj. Yog li ntawd, rail hluav taws xob hloov tsheb lub cev muaj zog feem ntau yog tsav los ntawm PWM tswj kom muaj kev sib npaug ntawm kev ua haujlwm thiab kev ua haujlwm.
3. Txoj Cai Ua Haujlwm ntawm AC Motor
AC lub cev muaj zog yog ib qho khoom siv uas tau tsav los ntawm kev hloov tam sim no. Raws li cov yam ntxwv ntawm peb-theem alternating tam sim no, lub hauv paus rotating ib feem (ie, rotor) ntawm AC lub cev muaj zog yuav tig los ntawm cov hluav taws xob ywj pheej. Thaum lub hwj chim tso zis sim rub lub rotor, nws yuav tsim rotor tam sim no nyob rau hauv stator winding, uas ua rau lub cev muaj zog theem tsim ib tug tej theem sib txawv, li no generating ntau dua torque thiab tsav tsheb rail hluav taws xob hloov lub laub khiav.
AC motors tuaj yeem tswj tau los ntawm vector tswj thiab induction tswj. Vector tswj tuaj yeem ua tiav ntau qhov tso zis torque thiab txhim kho qhov nrawm thiab lub peev xwm thauj khoom ntawm lub cev muaj zog; induction tswj yog tsim rau cov xwm txheej tsis tshua muaj suab nrov, tab sis kuj muaj cov yam ntxwv ntawm lub suab nrov. Hauv kev tsheb ciav hlau hluav taws xob hloov tsheb, vim qhov xav tau ntawm kev thauj khoom siab, kev siv hluav taws xob siab, tsis tshua muaj suab nrov thiab lwm yam ntxwv, vector tswj feem ntau yog siv los ua kom tau txais txiaj ntsig zoo thiab txhim khu kev qha.
Post lub sij hawm: May-30-2024
