Yuav txiav txim seb lub cev muaj zog yog qhov zoo lossis tsis zoo los ntawm digital multimeter
1. Kev tiv thaiv hauv av (siv cov qib siab ohm iav): cov rwb thaiv tsev tiv thaiv ntawm lub cev muaj zog winding (peb-theem) thiab cov casing feem ntau yuav tsum siab tshaj 2M, thiab qhov yuav tsum tau txo qis raws li qhov tsim nyog rau kev siv hauv av. , acid-base thiab lwm yam ib puag ncig. Feem ntau tsis tsawg dua 0.5M.
2. Phase-rau-theem tsis kam (siv qib siab ohms): cov rwb thaiv tsev tiv thaiv ntawm windings ntawm cov theem sib txawv feem ntau yuav tsum tau siab tshaj 2M, thiab cov kev xav tau tuaj yeem txo qis raws li qhov tsim nyog rau kev siv hauv av, acid-base thiab lwm yam. ib puag ncig, feem ntau tsis tsawg dua 0.5M.
3. Peb-theem tsis kam tus nqi (siv cov iav qis ntawm ohm iav): tus nqi tsis kam ntawm peb-theem winding nws tus kheej xav tau tias tus nqi tsis kam ntawm peb-theem winding yog roughly balanced (cov ntaub ntawv raug tsuas yog tau los ntawm Kev ntsuas nrog lub ntsuas ntsuas digital, thiab qhov yuav tsum tau ua rau lub cev muaj zog sib txawv yog qhov sib txawv. yuav tsum tsis pub tshaj 2 feem pua).
220v lub cev muaj zog yuav ua li cas thim txoj cai
1. Schematic daim duab rau pem hauv ntej thiab rov qab tswj ntawm ib-theem AC lub cev muaj zog nrog reversing hloov: kho ib kawg ntawm cov xov hlau winding txuas nrog series nrog lub capacitor mus rau lwm kawg ntawm lub hwj chim mov, thiab hloov cov kev taw qhia ntawm lub rotating. magnetic teb ntawm lub cev muaj zog.
2. Centrifugal hloov, khiav lub capacitor, txuas nrog lub pib capacitor los tswj qhov zoo thiab qhov tsis zoo ntawm kev sib hloov txoj cai: U1U2 yog lub ntsiab winding ntawm lub cev muaj zog, V1V2 yog lub built-in centrifugal hloov ntawm lub cev muaj zog, thiab Z1Z2 yog qhov thib ob winding. "V1Z1 txuas nrog lub capacitor khiav (me), thiab V2Z1 txuas nrog lub pib capacitor (loj).
Ib-theem lub cev muaj zog feem ntau yog hais txog lub zog qis ib-theem asynchronous lub cev muaj zog los ntawm ib-theem AC fais fab mov (AC220V). Hom lub cev muaj zog no feem ntau muaj ob-theem windings ntawm lub stator thiab lub rotor yog hom squirrel-cage. Kev faib tawm ntawm ob-theem windings ntawm lub stator thiab cov khoom siv hluav taws xob sib txawv tuaj yeem tsim cov yam ntxwv sib txawv pib thiab khiav.
Ib-theem lub cev muaj zog yog hais txog lub cev muaj zog asynchronous uas yog siv los ntawm 220V AC ib-theem fais fab mov. Vim hais tias 220V fais fab mov yog yooj yim heev thiab pheej yig, thiab hluav taws xob siv nyob rau hauv tsev neeg lub neej kuj yog 220V, yog li ib-theem lub cev muaj zog tsis yog tsuas yog siv nyob rau hauv ib tug loj npaum li cas ntawm ntau lawm, tab sis kuj muaj feem xyuam rau tib neeg lub neej txhua hnub, tshwj xeeb tshaj yog nrog kev txhim kho ntawm tib neeg txoj kev ua neej nyob, tus nqi ntawm ib-theem motors siv hauv cov khoom siv hluav taws xob hauv tsev kuj nce ntxiv.
Nyob rau hauv cov nqe lus ntawm kev tsim, muaj micro twj, refiners, threshers, pulverizers, woodworking machinery, kho mob, thiab lwm yam. Nyob rau hauv cov nqe lus ntawm lub neej, muaj hluav taws xob kiv cua, cov plaub hau tshuab ziab khaub ncaws, cua kiv cua, tshuab ntxhua khaub ncaws, tub yees, thiab lwm yam. hom. Tab sis lub hwj chim tsawg dua.
Hauv txoj kev xav, yog tias kev ntsuas tau ua kom AC tam sim no ntws hauv ob pawg ntawm windings ntawm ib-theem lub cev muaj zog muaj qee theem sib txawv, nws tuaj yeem pib. Yuav ua li cas ua kom muaj qee theem sib txawv ntawm ob lub peev xwm sib nqus los yog sib nqus fluxes uas tau staggered los ntawm qee lub kaum sab xis hauv qhov chaw yog qhov pib ntawm kev daws qhov teeb meem pib. Raws li qhov no, ib-theem AC asynchronous motors tuaj yeem muab faib ua ob pawg: cais-theem hom thiab hom ncej ncej.
Split-phase ib-theem lub cev muaj zog
Kev sib cais-theem ib-theem lub cev muaj zog siv cov capacitors lossis resistors hauv series nrog cov inductive pib winding los ua lub luag haujlwm hloov theem, kom cov theem tam sim no ntawm kev pib winding thiab kev ua haujlwm winding yog staggered, uas yog hu ua "theem kev sib cais".
(1) Capacitive split-phase ib-theem lub cev muaj zog
Txij li cov theem-hloov nyhuv ntawm lub capacitor yog qhov pom tseeb, tsuav yog lub capacitor ntawm lub peev xwm tsim nyog (feem ntau txog 20-50μF) txuas nrog hauv series hauv qhov pib winding, qhov tam sim no theem sib txawv ntawm ob windings yuav ua tau. nyob ze rau 90 degree, thiab cov hluavtaws rotating magnetic teb nyob rau lub sij hawm no yog ze rau Vim hais tias ntawm lub voj voog rotating magnetic teb, qhov pib torque yog loj thiab cov pib tam sim no me me.
Hom no ib-theem lub cev muaj zog yog dav siv thiab yuav khaws cia (hu ua capacitor khiav lub cev muaj zog) los yog txiav tawm (hu ua capacitor pib lub cev muaj zog, uas yog tua los ntawm ib tug centrifugal hloov nyob rau hauv lub cev muaj zog) raws li xav tau tom qab pib. Yog tias tsim nyog los hloov cov kev taw qhia ntawm kev sib hloov ntawm lub cev muaj zog, nws tsuas yog yuav tsum tau thim rov qab qhov hluav taws xob kawg ntawm ib qho winding, thiab lub sijhawm tam sim no theem kev sib raug zoo ntawm ob lub windings yog qhov sib txawv.
(2) Resistive split-phase ib-theem lub cev muaj zog
Qhov pib winding ntawm hom no lub cev muaj zog muaj tsawg dua thiab cov xov hlau nyias nyias. Piv nrog rau kev khiav winding, lub reactance yog me me thiab qhov tsis kam yog loj. Thaum pib nrog kev sib cais ntawm kev sib cais, qhov tam sim no ntawm qhov pib winding yog ua ntej ntawm kev khiav winding, thiab cov khoom sib nqus sib nqus yog ib qho elliptical rotating magnetic teb nrog lub loj ellipticity, thiab qhov pib torque yog me me. Qhov pib winding ntawm qhov tsis kam sib cais-theem ib-theem lub cev muaj zog feem ntau yog tsim los rau kev ua haujlwm luv luv. Tom qab pib, nws raug txiav tawm los ntawm kev hloov centrifugal thiab tswj los ntawm kev ua haujlwm winding.
