Chastotnik lub cev muaj zog nrog koj ob txhais tes: lub tswvyim, cov kev qhia ntawv thiab kev twb kev txuas

Qhov tsab xov xwm yuav muab xam rau chastotnik lub cev muaj zog, nws ua hauj lwm hauv paus ntsiab lus thiab lub ntsiab Cheebtsam. Lub homphiaj yuav tsum yog nyob rau qhov kev tshawb xav tias koj to taub txoj ntsiab cai ntawm cov zaus converter , thiab yuav nyob rau hauv lub neej yav tom ntej mus nqa tawm vim thiab raug lawv tus kheej txhais tes. Tab sis nws yuav tsum tau pib ib tug me me hoob pib nyob rau hauv uas koj yuav kawm tau txog dab tsi yog chastotnik thiab rau dab tsi lub hom phiaj yog yuav tsum tau.

Lub zog ntawm cov zaus converter

Tus tsov ntxhuav lub sib qhia yog npaum li cas los muaj asynchronous motors. Thiab lawv tau yeej ib txwm tau yooj yim uas tswj, raws li lawv muaj ib qhov rotor ceev, thiab yog heev yooj yim mus hloov lub tswv yim voltage, thiab tej zaum kuj txawm tsis yooj yim sua. Tab sis chastotnik kiag li hloov daim duab. Thiab yog hais tias ua ntej lawm los mus hloov cov kev ceev ntawm lub zog ntawm lub conveyor, piv txwv li, siv ib tug ntau yam ntawm zog, tam sim no siv ib zaug xwb hluav taws xob ntaus ntawv yog txaus.

Nyob rau hauv tas li ntawd, chastotniki tau kom tau xwb tsis muaj peev xwm hloov tus tsav tsis, tab sis kuj yog ib tug ob peb ntxiv degrees ntawm kev tiv thaiv. Tshem tawm qhov xav tau rau electromagnetic starters, thiab tej zaum kuj tsis txawm yuav tau muaj ib tug peb-theem network los xyuas kom meej qhov qub lag luam ntawm lub induction lub cev muaj zog. Tag nrho cov dej num txuam nrog switching thiab switching Actuator, mus rau lub inverter. Nws pub hloov cov theem ntawm cov zis, ib tug tam sim no zaus (thiab chaw pib rotor ceev hloov), mus nqa tawm kev hloov ntawm pib thiab braking, thiab muaj peev xwm siv ib tug tswv tsev ntawm lwm yam kev khiav dej num. Tag nrho cov nyob ntawm lub microcontroller ua hauj lwm nyob rau hauv cov kev tswj Circuit Court.

hauv paus ntsiab lus ntawm cov lag luam

Ua chastotnik lub cev muaj zog nrog koj ob txhais tes, uas nws lub tswvyim yog muaj nyob rau hauv tsab xov xwm, yog yooj yim txaus. Nws tso cai rau rau converting ib tug tib theem peb. Yog li ntawd, nws yog tej zaum yuav siv nyob rau hauv lub neej txhua hnub induction lub cev muaj zog. Yog tsis muaj poob nws efficiency thiab lub hwj chim. Tom qab tag nrho, koj paub hais tias muaj yog ib tug yuav txo tau ntawm cov tsis yuav luag ob npaug thaum lub cev muaj zog yog hloov nyob rau hauv ib-theem network. Thiab qhov no ob peb transformations mus txog ntawm cov voltage tswv yim ntawm lub ntaus ntawv.

Tus thawj tswvyim yog ib tug rectifier unit. Ntau ntawm nws yuav tau los sib tham nyob rau hauv kom meej hauv qab no. Tom qab lub rectified voltage yog lim. Thiab nkag mus rau ib tug huv DC hwj chim mus rau lub inverter cov tswv yim. Nws converts DC rau AC nrog cov yam tus naj npawb ntawm theem. Qhov no yog ib tej zaum yuav raug mus rau ib tug cascade ntawm kev kho me ntsis. Nws muaj ib tug semiconductor, uas yog kev cob cog rua rau cov kev tswj Circuit Court nyob rau hauv microcontroller. Tab sis tam sim no tag nrho cov qhov chaw nyob rau hauv kom meej.

rectifier tsev

Nws yuav ua tau ntawm ob hom - ib thiab peb theem. Tus thawj hom converter yuav siv tau rau tej network. Yog hais tias koj muaj ib tug peb-theem, nws yog txaus kom tsim tau ib tug kev twb kev txuas mus rau ib. chastotnika Circuit Court rau lub cev muaj zog tsis yog tsis muaj tiav chav tsev. Txij li thaum muaj ib tug txawv nyob rau hauv lub xov tooj ntawm theem, ces koj yuav tsum tau siv ib tug tej yam muaj pes tsawg tus ntawm semiconductor diodes. Thaum nws los txog rau zaus converters, uas yog pub los ntawm ib tug tib theem, nws yuav tsum tau lub rectifier diodes ntawm plaub. Lawv muaj nyob rau hauv ib tug choj Circuit Court.

Nws tso cai rau kom txo qhov txawv nruab nrab ntawm tus voltage muaj nqis nyob rau lub tswv yim thiab cov qhov tso zis. Ntawm cov hoob kawm, tej zaum yuav siv ib tug ib nrab-yoj Circuit Court, tab sis nws yog ices, muaj yog ib tug loj tus naj npawb ntawm oscillations. Tab sis yog hais tias peb tham txog ib tug peb-theem kev twb kev txuas, nws yog tsim nyog los siv ib txwm ntawm rau semiconductors. Raws nraim tib yam qauv nyob rau hauv lub tsheb alternator rectifier, yog tsis muaj sib txawv. Qhov tshaj plaws xwb uas yuav muab ntxiv no, thiaj li hais tias yog peb ntxiv diode tiv thaiv rov qab voltage.

lim ntsiab

Tom qab lub rectifier yog lim. Nws lub ntsiab lub hom phiaj - nws yog tag nrho cov cut-off ib feem ntawm lub rectified tam sim no nce mus nce los. Rau ib tug ntau tseeb daim duab ntawm qhov yuav tsum tau mus ua ib tug hloov txawv. Yog li ntawd, ntxiv rau kis los ntawm tus kauj. Ces ntawm ntxiv thiab rho tawm muaj electrolytic capacitor. Ntawm no nws yog lub paj nyob rau hauv cov kev hloov tswvyim. Yog hais tias lub kauj yog hloov los ntawm reactance, lub capacitor nyob rau hauv lub xub ntiag ntawm txawv tam sim no yuav ua tau xws li ib tug neeg xyuas pib los yog kev sib tawg.

Raws li kuv hais, nyob rau hauv lub rectifier nyob rau DC tso zis. Thiab thaum ua ntawv thov mus rau lub electrolytic capacitor, tsis muaj dab tsi tshwm sim, txij thaum lub caij nyoog kawg no yog ib cov saw rupture. Tiam sis ntawm no yog ib tug me me nce mus nce los nyob rau hauv lub tam sim no. Yog hais tias ib tug alternating tam sim no ntws, nyob rau hauv qhov sib npaug Circuit Court ntawm lub capacitor ua ib tug neeg xyuas pib. Thiaj li, muaj ib tug Circuit Court ntxiv mus rho tawm. Cov kev tshawb nrhiav los ntawm cov kev cai ntawm Kirchhoff uas yog yooj yim nyob rau hauv hluav taws xob engineering.

Lub inverter hwj chim transistors

Thiab tam sim no mus txog lub tseem ceeb tshaj plaws ntawm - theem transistors. inverter dc rau ac - lawv tau ua lub inverter. Yog hais tias lub cev muaj zog no yog ua chastotnik tus kheej txhais tes, nws yog pom zoo kom siv cov los ua ke IGBT-transistors, koj yuav nrhiav tau lawv nyob rau hauv tej khw xov tooj cua Cheebtsam. Thiab tus nqi ntawm tag nrho cov Cheebtsam rau qhov siv thiab ua cov chastotnika yuav kaum lub sij hawm tsawg dua li tus nqi ntawm cov khoom tiav, txawm nyob rau hauv Tuam Tshoj.

Rau txhua theem siv ob transistors. Lawv muaj kev cob cog ntawm plus thiab rho tawm, raws li qhia nyob rau hauv daim duab nyob rau hauv tsab xov xwm. Tab sis muaj ib tug feature ntawm txhua tus ntawm cov transistor - cov tswj davhlau ya nyob twg. Nyob ntawm seb uas teeb liab yog thov mus rau nws, lub zog ntawm cov semiconductor caij hloov. Ntxiv mus, nws yog ua tau rau ua raws li siv phau ntawv ua haujlwm (e.g., ob peb microswitches tsim nyog mus thov ib tug voltage tswj terminals) thiab tsis siv neeg. Hais tias yog hais txog lub xeem thiab yuav tsum tau tham ntxiv.

Tus tswj Circuit Court

Thiab yog hais tias koj txuas lub inverter mus rau lub cev muaj zog yog yooj yim, tsuas yog yuav tsum tau txuas rau qhov tsim nyog cov lus xaus, txhua yam yog ntau npaum li cas yooj yim nrog lub tswj tswvyim. Qhov no yog hais tias muaj ib tug xav rau ib tug programming ntaus ntawv, mus cuag qhov zoo tshaj plaws tau hloov ntawm nws. Thaum cov tub ntxhais yog ib tug microcontroller rau nws yog txuas txawj nyeem ntawv thiab actuators. Yog li ntawd, koj yuav tsum muaj ib tug tam sim no transformer, uas yuav lossi saib xyuas lub hwj chim noj los ntawm lub fais tsav. Thiab nyob rau hauv cov ntaub ntawv ntawm tshaj yuav tsum tshwm sim chastotnika tawm.

Siv cov kev tswj Circuit Court

Nyob rau hauv tas li ntawd, nws muab kev tiv thaiv tiv thaiv overheating. Nyob rau hauv lub qhov zis ntawm lub microcontroller siv ib tug piv ntaus ntawv (los ua ke Darlington) yog txuas cov kev tswj davhlau ya nyob twg IGBT-transistors. Nyob rau hauv tas li ntawd, koj yuav tsum pom mus saib lub chaw, yog li ntawd koj yuav tsum muaj xws li nyob rau hauv lub tswvyim ntawm LED-zaub. Los ntawm kev nyeem ntawv li ntxiv cov nyees khawm uas tso cai rau tus tes hloov qhov ntawm programming hom thiab ib tug nce mus nce los kuj txawv nws kev sib hloov tus nqi ntawm lub rotor ntawm lub cev muaj zog.

xaus

Nws yog ib nqi sau cia hais tias koj yuav ua tau koj tus kheej thiab chastotnik rau lub electric tsav, tus nqi ntawm cov khoom tiav pib los ntawm 5000 rubles. Thiab nws yog rau cov hluav taws xob motors, lub hwj chim uas tsis pub tshaj 0.75 kW. Yog hais tias koj xav tau ib ce muaj zog tswj ib tug haib tsav, nws xav tau kev pab chastotnik kim heev. Rau tsev neeg siv txaus schemes sib tham hauv qab no. Yog vim li cas - tsis muaj yuav tsum tau rau ib tug loj tus naj npawb ntawm kev khiav dej num thiab tej chaw, cov tseem ceeb tshaj plaws - nws yog ib lub tseem hloov lub rotor ceev.