Vim lawv cov compactness thiab siab torque ceev, mus tas li hlau nplaum synchronous motors yog dav siv nyob rau hauv ntau yam kev siv, tshwj xeeb tshaj yog rau high-kev ua tau zoo tsav systems xws li submarine propulsion systems.Cov hlau nplaum ruaj khov synchronous lub cev muaj zog tsis tas yuav tsum tau siv cov hlua khi rau kev zoo siab, txo cov rotor tu thiab poob.Cov hlau nplaum ruaj khov synchronous lub cev muaj zog muaj txiaj ntsig zoo thiab tsim nyog rau kev ua haujlwm siab ua haujlwm xws li CNC tshuab cuab yeej, neeg hlau thiab cov tshuab tsim hluav taws xob hauv kev lag luam.
Feem ntau, kev tsim thiab tsim cov hlau nplaum ruaj khov synchronous motors yuav tsum xav txog ob qho tib si stator thiab rotor qauv thiaj li yuav tau txais lub cev muaj zog.
Cov qauv ntawm cov hlau nplaum ruaj khov synchronous lub cev muaj zog
Air-gap magnetic flux ceev:Kev txiav txim siab raws li qhov tsim ntawm asynchronous motors, thiab lwm yam, kev tsim cov hlau nplaum ruaj khov rotors thiab kev siv cov kev cai tshwj xeeb rau kev hloov stator windings. Nyob rau hauv tas li ntawd, nws yog assumed tias lub stator yog ib tug slotted stator.Cov huab cua sib txawv flux ceev yog txwv los ntawm qhov saturation ntawm stator core.Hauv particular, lub ncov flux ceev yog txwv los ntawm qhov dav ntawm cov hniav iav, thaum lub nraub qaum ntawm stator txiav txim siab qhov siab tshaj plaws flux.
Tsis tas li ntawd, qhov tso cai saturation theem nyob ntawm daim ntawv thov.Feem ntau, high-efficiency motors muaj qhov qis dua flux ceev, thaum lub cev muaj zog tsim los rau qhov siab tshaj plaws torque ntom muaj qhov ntom ntom ntom dua.Lub ncov huab cua sib txawv flux ceev feem ntau yog nyob rau hauv thaj tsam ntawm 0.7-1.1 Tesla.Nws yuav tsum raug sau tseg tias qhov no yog tag nrho cov flux ntom, piv txwv li cov lej ntawm cov rotor thiab stator fluxes.Qhov no txhais tau hais tias yog hais tias armature cov tshuaj tiv thaiv quab yuam yog tsawg, nws txhais tau hais tias lub alignment torque yog siab.
Txawm li cas los xij, txhawm rau txhawm rau ua tiav qhov tsis txaus siab ntawm lub zog loj, lub stator cov tshuaj tiv thaiv yuav tsum loj.Tshuab tsis qhia tau hais tias loj m thiab me inductance L yog tsuas yog yuav tsum tau kom tau txais kev sib raug zoo torque.Qhov no feem ntau yog tsim nyog rau kev ua haujlwm hauv qab lub hauv paus ceev vim qhov siab inductance txo lub zog.
Cov khoom siv hlau nplaum ruaj khov:
Cov hlau nplaum ua lub luag haujlwm tseem ceeb hauv ntau yam khoom siv, yog li ntawd, kev txhim kho kev ua haujlwm ntawm cov ntaub ntawv no yog qhov tseem ceeb heev, thiab tam sim no tsom ntsoov rau lub ntiaj teb tsis tshua muaj thiab hloov cov ntaub ntawv hlau uas tuaj yeem tau txais cov hlau nplaum ruaj khov nrog cov khoom sib nqus zoo.Raws li kev siv tshuab, cov hlau nplaum muaj cov khoom sib nqus thiab cov khoom siv sib txawv thiab muaj qhov sib txawv corrosion kuj.
NdFeB (Nd2Fe14B) thiab Samarium Cobalt (Sm1Co5 thiab Sm2Co17) cov hlau nplaum yog cov khoom lag luam zoo tshaj plaws nyob rau niaj hnub no.Hauv txhua chav kawm ntawm cov hlau nplaum uas tsis tshua muaj hauv ntiaj teb muaj ntau ntau qib.NdFeB hlau nplaum tau luam tawm thaum xyoo 1980s.Lawv tau dav siv niaj hnub no hauv ntau daim ntawv thov sib txawv.Tus nqi ntawm cov khoom siv hlau nplaum no (ib qho khoom siv hluav taws xob) piv rau cov hlau nplaum ferrite, thiab ntawm ib kilogram hauv paus, NdFeB hlau nplaum raug nqi li 10 txog 20 npaug ntau npaum li cov hlau nplaum ferrite.
Qee cov khoom tseem ceeb siv los sib piv cov hlau nplaum ruaj khov yog: remanence (Mr), uas ntsuas lub zog ntawm cov hlau nplaum ruaj khov hlau nplaum, lub zog quab yuam (Hcj), lub peev xwm ntawm cov khoom siv los tiv thaiv demagnetization, cov khoom siv hluav taws xob (BHmax), lub zog sib nqus sib nqus. ; Curie kub (TC), qhov kub ntawm cov khoom poob nws cov hlau nplaum.Neodymium hlau nplaum muaj ntau dua remanence, siab dua coercivity thiab zog khoom, tab sis feem ntau yog cov qis Curie kub hom, Neodymium ua hauj lwm nrog Terbium thiab Dysprosium thiaj li tswj nws cov khoom sib nqus ntawm qhov kub thiab txias.
Permanent Magnet Synchronous Tsav Tsim
Hauv kev tsim cov hlau nplaum ruaj khov synchronous lub cev muaj zog (PMSM), kev tsim kho ntawm cov hlau nplaum ruaj khov rotor yog nyob ntawm stator thav duab ntawm peb-theem induction lub cev muaj zog yam tsis hloov cov geometry ntawm stator thiab windings.Specifications thiab geometry muaj xws li: lub cev muaj zog ceev, zaus, tus naj npawb ntawm tus ncej, stator ntev, sab hauv thiab sab nraud diameters, tus naj npawb ntawm rotor slots.Tus tsim ntawm PMSM suav nrog tooj liab poob, rov qab EMF, hlau poob thiab nws tus kheej thiab kev sib nrig sib inductance, sib nqus flux, stator tsis kam, thiab lwm yam.
Kev suav ntawm tus kheej inductance thiab kev sib nrig sib inductance:
Inductance L tuaj yeem txhais tau tias yog qhov piv ntawm kev sib txuas ntawm flux mus rau flux-tsim tam sim no I, hauv Henrys (H), sib npaug rau Weber ib ampere. Ib qho inductor yog ib yam khoom siv los khaws lub zog hauv qhov chaw sib nqus, zoo ib yam li cas lub capacitor khaws lub zog hauv qhov hluav taws xob. Inductors feem ntau muaj cov coils, feem ntau raug mob nyob ib ncig ntawm lub ferrite lossis ferromagnetic core, thiab lawv cov nqi inductance tsuas yog cuam tshuam nrog lub cev qauv ntawm tus neeg xyuas pib thiab qhov permeability ntawm cov khoom uas cov hlau nplaum dhau mus.
Cov kauj ruam los nrhiav qhov inductance yog raws li nram no:1. Piv txwv tias muaj tam sim no kuv nyob rau hauv tus neeg xyuas pib.2. Siv Biot-Savart txoj cai lossis Ampere txoj cai voj voog (yog tias muaj) los txiav txim siab tias B yog qhov sib npaug txaus.3. Xam tag nrho cov flux txuas tag nrho cov circuits.4. Muab tag nrho cov hlau nplaum sib nqus los ntawm cov xov tooj ntawm cov loops kom tau txais cov flux linkage, thiab ua tiav cov qauv tsim ntawm cov hlau nplaum ruaj khov synchronous lub cev muaj zog los ntawm kev ntsuas qhov yuav tsum tau ua.
Txoj kev tshawb nrhiav pom tias kev tsim qauv siv NdFeB raws li AC cov khoom siv hlau nplaum ruaj khov rotor nce cov hlau nplaum sib nqus tsim nyob rau hauv qhov sib txawv ntawm huab cua, ua rau txo qis hauv lub voj voog sab hauv ntawm stator, thaum lub vojvoog sab hauv ntawm stator siv samarium cobalt mus tas li. cov khoom siv hlau nplaum rotor loj dua.Cov txiaj ntsig tau pom tias qhov poob tooj liab zoo hauv NdFeB raug txo los ntawm 8.124%.Rau samarium cobalt raws li cov khoom siv hlau nplaum tas mus li, cov hlau nplaum sib nqus yuav yog qhov sib txawv ntawm sinusoidal.Feem ntau, kev tsim thiab tsim cov hlau nplaum ruaj khov synchronous motors yuav tsum xav txog ob qho tib si stator thiab rotor qauv thiaj li yuav tau txais lub cev muaj zog.
nyob rau hauv xaus
Cov hlau nplaum ruaj khov synchronous lub cev muaj zog (PMSM) yog lub cev muaj zog synchronous uas siv cov khoom siv sib nqus zoo rau kev sib nqus, thiab muaj cov yam ntxwv ntawm kev ua haujlwm siab, qauv yooj yim, thiab tswj tau yooj yim.Cov hlau nplaum ruaj khov synchronous lub cev muaj zog muaj kev siv hauv traction, automotive, robotics, thiab aerospace technology. Lub hwj chim ceev ntawm cov khoom siv hlau nplaum tas mus li yog siab dua li qhov kev ntaus nqi ntawm tib txoj kev ntaus nqi ntawm qhov kev ntsuas hluav taws xob zoo ib yam kom tsim cov ntawv sib nqus. .
Tam sim no, tus tsim ntawm PMSM yuav tsum tsis yog tsuas yog lub zog siab dua, tab sis kuj txo qis thiab qis lub sijhawm ntawm inertia.
Lub sij hawm xa tuaj: Plaub Hlis-01-2022