Zaus converters rau induction motors: hauv paus ntsiab lus ntawm cov lag luam thiab cov txij nkawm

Niaj hnub no, zaus converters rau induction motors yog feem ntau siv nyob rau hauv qhov kev lag luam. Nws yog ib nqi sau cia hais tias cov tshuab muaj nyob rau hauv lawv cov qauv peb windings, uas yog kev cob cog rua rau ib tug "lub hnub qub" los yog "daim duab peb sab". Tab sis lawv muaj ib tug drawback - kho cov rotor ceev yog heev yooj yim. Tab sis hais tias yog ua ntej. Tam sim no, thaum los txog rau cov kev pab ntawm micro thiab lub hwj chim electronics, qhov no ua hauj lwm yog yooj yim zog. Tig lub nce mus nce los resistor yuav hloov cov kev ceev nyob rau hauv ib tug ntau yam.

Vim li cas yuav tsum tau zaus converter?

Tso cai nyob rau hauv cov khoom no ntau ntau, tab sis feem ntau ntawm cov me me siv. Nyob rau hauv qhov tseeb, kom tswj tau tus asynchronous lub cev muaj zog yog tsim nyog yuav tsum tau mus kho tsis tau tsuas yog cov muab ceev tab sis kuj acceleration lub sij hawm, deceleration. Nyob rau hauv tas li ntawd, tej system yuav tsum tau kev tiv thaiv. Nws yog tsim nyog los noj mus rau hauv tus account tam sim no zaus converter, uas siv ib tug induction lub cev muaj zog.

Lug siv chastotniki nyob rau hauv cua tshuab. Dua li ntawm qhov khees yooj yim ntawm tus kiv cua log, lub load rau ntawm cov rotor yog heev loj. Thiab tseem muaj acceleration yog tsis yooj yim sua. Tsis tas li ntawd, muaj tej yam teeb meem nyob rau hauv uas qhov yuav tsum tau ua rau kom cov muab ceev, cov huab cua khiav yog ntau dua los yog tsawg dua. Tab sis qhov no tsuas yog ib qho piv txwv, ib zaus converter yog feem ntau siv nyob rau hauv lwm lub. Nrog chastotnika yuav synchronize cov kev ceev ntawm lub conveyor, muaj raws ntawm ob peb ribbons.

Lub hauv paus ntsiab lus ntawm cov lag luam ntawm lub zaus converter

Lub hauv paus yog lub microprocessor tswj thiab ntau yam circuits rau converting AC thiab DC voltages. Ob peb dab tshwm sim nrog rau voltage uas yog txhab khoom mus rau lub hwj chim tswv yim ntawm lub ntaus ntawv. Ua Hauj Lwm zaus converter yog yooj yim, nws suffices xav txog peb theem. Firstly, muaj yog wires. Ob, lub filtering. Peb, inversion - lub hloov dua siab tshiab ntawm DC rau AC.

Tsuas yog nyob rau hauv cov dhau theem yuav tau hloov lub zog thiab tam sim no muaj nqis. By ua tus yam ntxwv ntawm qhov tam sim no muaj peev xwm yuav tswj tau los ntawm lub rotor ceev ntawm lub asynchronous lub cev muaj zog. Nyob rau hauv lub inverter theem siv haib los ua ke ntawm transistors. Cov peb hais O - ob lub hwj chim thiab ib tug tswj. Los ntawm cov magnitude ntawm lub teeb liab thov mus rau yav tas nyob rau hauv lub tam sim no-voltage yam ntxwv ntawm cov qhov tso zis chastotnika.

Tus tsav yuav hloov?

Zaus converters rau asynchronous motors pib siv kuj ntev los no. Tab sis science yog maj thereto, thawj rotor muab ceev tau varied siv zog los yog variator. Txawm li cas los, xws tswj yog heev cumbersome, thiab tus tsav hwj chim yog lub sij hawm vim hais tias tsis tseem ceeb mechanisms. Siv kis tau tus mob yuav pab ua rau kom cov kev sib hloov ceev, tab sis hais tias yog raws nraim teem zaum kawg tsis yog heev yooj yim. Vim li no, lub VSD yog zoo npaum li cas, txij li thaum nws txhob lub hwj chim tsis tau. Tab sis feem ntau cov tseem ceeb - nws tso cai rau koj yuav hloov lub tsav tsis, tsis muaj kev hloov lub mechanics.

Uas inverter xaiv rau siv hauv tsev?

Nws yuav tsum tau muab sau tseg tias kev twb kev txuas yuav nqa tawm mus rau lub network ib thiab peb-theem tam sim no. Nws tag nrho cov nyob ntawm kev tsav qauv, thiab yog hais tias lawv, nyob rau hauv uas lub inverter Circuit Court ntawm lub induction lub cev muaj zog siv nyob rau hauv qhov. Yuav kom to taub cov ua hauj lwm hauv paus ntsiab lus, nws yog txaus los mus saib cov qauv ntawm cov ntaus ntawv. Tus thawj tsev - ib tug rectifier, uas yog yuav mus rau semiconductor diodes. Qhov no choj Circuit Court rau converting nkaus xwb los yog peb theem AC rau DC. Rau lub tsev siv koj yuav tsum xaiv cov neeg chastotnikov qauv uas nws inputs yog kev cob cog rua rau ib leeg-theem alternating tam sim no. Lwm yam kev xaiv uas nyob rau hauv private tsev tuaj coj ib lub peb-theem network yog problematic, thiab tsis muaj txiaj ntsim, vim hais tias koj yuav tsum siv ib tug ntau sophisticated account ntawm lub fais khoom siv.

Lub ntsiab tsav yam

Little tau hais tias cov Circuit Court yog ib qho inverter. Tab sis koj yuav tsum xav txog nws nyob rau hauv kom meej rau ncauj lus kom ntxaws txoj kev tshawb no. Nyob rau hauv thawj theem hloov dua siab tshiab - AC rectification. Tsis muaj teeb meem ntau npaum li cas ntawm lub tswv yim theem nkag (ib tug los yog peb), nyob rau lub tso zis ntawm lub rectifier koj tau txais ib qhov unipolar (ib ntxiv thiab ib tug rho tawm) voltage ntawm 220 volts. Nws yog li ntawd ntau npaum li cas ntawm theem thiab nruab nrab.

Qhov no yog ua raws li los ntawm ib lub lim unit, uas yuav pab tau tshem ntawm tag nrho cov nce mus nce los Cheebtsam ntawm lub rectified tam sim no. Thiab nyob rau hauv heev dhau theem yog tus inverted lub - los ntawm DC yog nce mus nce los los ntawm txoj kev ntawm lub hwj chim transistors, tswj los ntawm cov microcontroller. Feem ntau, inverters rau induction motors muaj ib tug monochrome LCD zaub, uas qhia txog cov yuav tsum tau tsis.

Yog nws ua tau kom cov ntaus ntawv rau koj tus kheej?

Qhuav ntawm lub ntaus ntawv yog txuam nrog ntau teeb meem. Koj yuav tsum kawm txog cov qauv ntawm programming microcontrollers mus cuag cov possibilities ntawm lub twj paj nruag. Nws yog ib qho tseem ceeb coj mus rau hauv tus account tag nrho cov yooj yim uas yuav tsum tau. Piv txwv li, lub automatic thaum muaj xwm ceev shutdown thaum tau siab tshaj lub siab tshaj plaws permissible tam sim no uas yog noj los ntawm lub cev muaj zog. Ua li no, koj yuav tau teem lub tso zis tam sim no transformers, uas yuav nqa tawm tas mus li xyuas. Tsis tas li ntawd, nws yuav tsum tau muab lub active thiab passive txias ntsiab ntawm lub hwj chim system - diodes thiab transistors, thiab kuj lov tes taw tus ntaus ntawv nyob rau hauv lub ntev cua kub. Tsuas yog nyob rau hauv cov ntaub ntawv no, zaus converters rau asynchronous motors yuav ua yam xyuam xim.