1. Yuav ua li cas rov qab electromotive quab yuam?
Qhov tseeb, tiam ntawm rov qab electromotive quab yuam yog yooj yim to taub. Cov tub ntxhais kawm ntawv uas muaj kev nco zoo yuav tsum paub tias lawv tau raug nthuav tawm thaum ntxov li junior high school thiab high school. Txawm li cas los xij, nws tau hu ua induced electromotive force thaum lub sijhawm ntawd. Lub hauv paus ntsiab lus yog tias tus neeg xyuas pib txiav cov kab sib nqus. tsuav yog muaj ob tug txheeb ze zog txaus, txawm lub magnetic teb tsis txav thiab tus neeg xyuas pib txiav; Nws kuj tuaj yeem yog tus neeg xyuas pib tsis txav thiab qhov chaw sib nqus txav.
Rau cov hlau nplaum ruaj khov synchronouslub cev muaj zog, nws cov coils yog tsau rau ntawm stator (conductor), thiab cov hlau nplaum ruaj khov yog tsau rau ntawm rotor (magnetic field). Thaum lub rotor tig, lub magnetic teb generated los ntawm cov hlau nplaum tas mus li ntawm lub rotor yuav tig thiab yuav nyiam los ntawm stator. Lub kauj ntawm lub kauj yog txiav thiabrov qab electromotive quab yuamyog generated nyob rau hauv lub kauj. Vim li cas nws thiaj hu rov qab electromotive force? Raws li lub npe qhia, vim hais tias cov kev taw qhia ntawm lub rov qab electromotive quab yuam E yog opposite rau cov kev taw qhia ntawm lub davhlau ya nyob twg voltage U (raws li qhia nyob rau hauv daim duab 1).
2. Dab tsi yog qhov kev sib raug zoo ntawm lub zog hluav taws xob rov qab thiab qhov hluav taws xob davhlau ya nyob twg?
Nws tuaj yeem pom los ntawm daim duab 1 tias kev sib raug zoo ntawm lub zog hluav taws xob rov qab thiab qhov hluav taws xob davhlau ya nyob twg nyob rau hauv load yog:
Rau qhov kev ntsuam xyuas ntawm lub zog rov qab electromotive, nws feem ntau kuaj nyob rau hauv tsis muaj-load mob, tsis muaj tam sim no, thiab kev sib hloov ceev yog 1000rpm. Feem ntau, tus nqi ntawm 1000rpm yog txhais, thiab rov qab electromotive quab yuam coefficient = qhov nruab nrab tus nqi ntawm lub nraub qaum electromotive force / ceev. Lub nraub qaum electromotive quab yuam coefficient yog qhov tseem ceeb ntawm lub cev muaj zog. Nws yuav tsum tau muab sau tseg ntawm no hais tias lub nraub qaum electromotive quab yuam nyob rau hauv load yog tas li hloov ua ntej qhov ceev yog ruaj khov. Los ntawm kev sib npaug (1), peb tuaj yeem paub tias lub zog hluav taws xob rov qab nyob rau hauv kev thauj khoom tsawg dua qhov hluav taws xob davhlau ya nyob twg. Yog tias lub zog hluav taws xob rov qab ntau dua li qhov hluav taws xob hluav taws xob, nws dhau los ua lub tshuab hluav taws xob thiab tso tawm qhov hluav taws xob mus rau sab nraud. Txij li thaum qhov tsis kam thiab tam sim no hauv kev ua haujlwm tiag tiag me me, tus nqi ntawm lub zog hluav taws xob rov qab yog kwv yees li qhov sib npaug ntawm qhov hluav taws xob davhlau ya nyob twg thiab raug txwv los ntawm tus nqi ntsuas ntawm lub davhlau ya nyob twg voltage.
3. Lub ntsiab lus ntawm lub cev rov qab electromotive quab yuam
Xav txog dab tsi yuav tshwm sim yog tias tsis muaj zog electromotive rov qab? Nws tuaj yeem pom los ntawm qhov sib npaug (1) tias tsis muaj lub zog hluav taws xob rov qab, tag nrho lub cev muaj zog sib npaug rau cov khoom siv dawb huv thiab dhau los ua ib qho khoom siv uas tsim kom muaj cua sov tshwj xeeb. Qhov noyog qhov tsis sib xws rau qhov tseeb tias lub cev muaj zog hloov hluav taws xob rau hauvmechanical zog.
Nyob rau hauv lub zog hluav taws xob conversion kev sib raug zoo
, UI yog lub zog hluav taws xob input, xws li lub zog hluav taws xob input rau hauv lub roj teeb, lub cev muaj zog lossis transformer; I2Rt yog qhov hluav taws xob poob hluav taws xob hauv txhua qhov hluav taws xob, qhov hluav taws xob no yog hom hluav taws xob poob hluav taws xob, qhov me dua qhov zoo; input hluav taws xob lub zog thiab kub poob Qhov sib txawv ntawm lub zog hluav taws xob yog ib feem ntawm lub zog muaj txiaj ntsig zoo sib xws rau lub zog hluav taws xob rov qab.
, nyob rau hauv lwm yam lus, lub nraub qaum electromotive quab yuam yog siv los tsim lub zog muaj txiaj ntsig, uas yog inversely cuam tshuam rau lub tshav kub poob. Qhov ntau dua qhov kub poob lub zog, qhov me dua lub zog muaj txiaj ntsig uas tuaj yeem ua tiav.
Lub hom phiaj hais lus, lub zog hluav taws xob rov qab siv lub zog hluav taws xob hauv Circuit Court, tab sis nws tsis yog "poob". Ib feem ntawm lub zog hluav taws xob sib txuas nrog lub zog hluav taws xob rov qab yuav raug hloov mus rau lub zog muaj txiaj ntsig rau cov khoom siv hluav taws xob, xws li lub zog ntawm lub cev muaj zog thiab lub zog ntawm lub roj teeb. Chemical zog thiab lwm yam.
Nws tuaj yeem pom tau tias qhov loj ntawm lub nraub qaum electromotive quab yuam txhais tau hais tias lub peev xwm ntawm cov khoom siv hluav taws xob hloov pauv tag nrho cov khoom siv hluav taws xob rau hauv lub zog muaj txiaj ntsig, thiab qhia txog qib ntawm cov khoom siv hluav taws xob hloov pauv muaj peev xwm.
4. Qhov luaj li cas ntawm lub nraub qaum electromotive quab yuam nyob ntawm?
Ua ntej muab cov qauv kev suav ntawm rov qab electromotive quab yuam:
E yog lub zog hluav taws xob ntawm lub kauj, ψ yog qhov sib nqus sib nqus, f yog qhov zaus, N yog tus lej hloov, thiab Φ yog qhov sib nqus flux.
Raws li cov qauv saum toj no, kuv ntseeg tias txhua tus tuaj yeem qhia ob peb yam uas cuam tshuam rau qhov loj ntawm lub nraub qaum electromotive quab yuam. Nov yog cov ntsiab lus ntawm ib tsab xov xwm:
(1) Lub zog hluav taws xob rov qab yog sib npaug ntawm qhov hloov pauv ntawm qhov sib nqus sib nqus. Qhov siab dua qhov kev sib hloov ceev, qhov kev hloov pauv ntau dua thiab qhov ntau dua qhov rov qab electromotive quab yuam;
(2) Qhov sib nqus sib nqus nws tus kheej yog sib npaug rau tus lej ntawm qhov sib npaug ntawm qhov sib nqus ib zaug. Yog li ntawd, qhov ntau dua ntawm cov lem, qhov loj ntawm qhov sib nqus sib nqus thiab qhov ntau dua qhov rov qab electromotive quab yuam;
(3) Tus naj npawb ntawm cov lem muaj feem xyuam rau lub tswv yim winding, lub hnub qub-delta kev twb kev txuas, tus naj npawb ntawm lem ntawm ib lub qhov, tus naj npawb ntawm cov theem, tus naj npawb ntawm cov hniav, tus naj npawb ntawm cov ceg sib txuas, tag nrho-pitch lossis luv-pitch scheme;
(4) Qhov sib nqus sib nqus ib zaug yog sib npaug ntawm lub zog magnetomotive faib los ntawm kev sib nqus tsis kam. Yog li ntawd, lub zog magnetomotive ntau dua, qhov me dua qhov sib nqus tsis kam nyob rau hauv cov kev taw qhia ntawm kev sib nqus sib nqus, thiab lub zog rov qab electromotive ntau dua;
(5) Magnetic kujmuaj feem xyuam rau kev koom tes ntawm qhov sib txawv ntawm cov huab cua thiab cov ncej qhov. Qhov loj dua qhov sib txawv ntawm huab cua, qhov sib nqus ua haujlwm ntau dua thiab qhov me me ntawm lub zog hluav taws xob rov qab. Cov ncej-groove kev sib koom ua ke yog qhov nyuaj thiab yuav tsum tau soj ntsuam kom ntxaws;
(6) Lub zog magnetomotive muaj feem xyuam rau qhov remanence ntawm cov hlau nplaum thiab thaj chaw zoo ntawm cov hlau nplaum. Qhov loj dua qhov remanence, qhov siab dua qhov rov qab electromotive quab yuam. Qhov chaw zoo yog cuam tshuam nrog cov kev taw qhia magnetizing, qhov loj thiab qhov chaw ntawm cov hlau nplaum, thiab yuav tsum muaj kev tsom xam tshwj xeeb;
(7) Cov hlau nplaum seem muaj feem xyuam rau qhov kub thiab txias. Qhov siab dua qhov kub, qhov me me rov qab electromotive quab yuam.
Nyob rau hauv cov ntsiab lus, lub influencing yam tseem ceeb ntawm rov qab electromotive quab yuam muaj xws li kev sib hloov ceev, tus naj npawb ntawm lem ntawm ib lub qhov, tus naj npawb ntawm cov theem, tus naj npawb ntawm parallel ceg, luv zuag qhia tag nrho lub suab, lub cev muaj zog sib nqus Circuit Court, huab cua sib txawv ntev, ncej-slot coordination, hlau nplaum residual magnetism, thiab magnet placement position. Thiab hlau nplaum loj, hlau nplaum magnetization kev taw qhia, kub.
5. Yuav ua li cas xaiv qhov loj ntawm rov qab electromotive quab yuam hauv kev tsim lub cev muaj zog?
Hauv kev tsim lub cev muaj zog, rov qab electromotive force E yog qhov tseem ceeb heev. Kuv xav tias yog lub zog hluav taws xob rov qab tsim tau zoo (kev xaiv qhov loj me thiab qhov tsis tshua muaj qhov tsis sib haum xeeb), lub cev muaj zog yuav zoo. Cov teebmeem tseem ceeb ntawm rov qab electromotive quab yuam ntawm motors yog raws li nram no:
1. Qhov loj ntawm lub nraub qaum electromotive quab yuam txiav txim qhov chaw tsis muaj zog ntawm lub cev muaj zog, thiab qhov chaw tsis muaj zog ntawm qhov chaw txiav txim siab qhov kev faib tawm ntawm daim ntawv qhia kev ua haujlwm ntawm lub cev muaj zog.
2. Lub distortion tus nqi ntawm lub rov qab electromotive quab yuam waveform cuam tshuam lub ripple torque ntawm lub cev muaj zog thiab stability ntawm lub torque tso zis thaum lub cev muaj zog khiav.
3. Qhov loj ntawm lub nraub qaum electromotive quab yuam ncaj qha txiav txim siab torque coefficient ntawm lub cev muaj zog, thiab rov qab electromotive force coefficient yog ncaj qha proportional rau lub torque coefficient. Los ntawm qhov no peb tuaj yeem kos cov kev tsis sib haum xeeb hauv qab no hauv kev tsim lub cev muaj zog:
a. Raws li lub nraub qaum electromotive quab yuam nce, lub cev muaj zog tuaj yeem tswj tau siab torque hauv qabtus maub lostxwv tam sim no nyob rau hauv qhov chaw ua haujlwm qis, tab sis tsis tuaj yeem tso tawm torque ntawm kev kub ceev, lossis txawm tias ncav cuag qhov xav tau ceev;
b. Thaum lub zog hluav taws xob rov qab me me, lub cev muaj zog tseem muaj peev xwm tso tawm hauv qhov chaw siab ceev, tab sis lub zog torque tsis tuaj yeem ncav cuag nyob rau hauv tib tus maub los tam sim no ntawm qhov ceev.
Yog li ntawd, tus tsim ntawm lub nraub qaum electromotive quab yuam nyob ntawm qhov xav tau tiag tiag ntawm lub cev muaj zog. Piv txwv li, nyob rau hauv lub tsim ntawm ib tug me me lub cev muaj zog, yog hais tias nws yuav tsum tseem tso zis txaus torque ntawm tsawg ceev, ces lub rov qab electromotive quab yuam yuav tsum tau tsim kom loj.
Post lub sij hawm: Feb-04-2024