Hauv kab lus koj yuav kawm tias AC motors yog dab tsi, xav txog lawv cov cuab yeej, lub hauv paus ntsiab lus ntawm kev ua haujlwm, kev ua haujlwm. Nws yog ib nqi sau cia hais tias niaj hnub no nyob rau hauv kev lag luam ntau tshaj 95 feem pua ntawm tag nrho cov siv motors yog asynchronous tshuab. Lawv tau dhau los ua qhov dav vim tias lawv muaj kev ntseeg siab, lawv tuaj yeem ua haujlwm tau ntev heev vim lawv kev tswj xyuas.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm induction motors
Kom nkag siab tias lub tshuab hluav taws xob ua haujlwm li cas, koj tuaj yeem ua qhov kev sim me ntsis. Tau kawg, qhov no yuav tsum muaj cov cuab yeej tshwj xeeb. Txhim kho horseshoe hlau nplaum kom nws tau tsav los ntawm tus kov. Raws li koj paub, ib tug hlau nplaum muaj ob tug ncej. Nruab nrab ntawm lawv nws yog ib qhov tsim nyog los tso ib lub tog raj kheej ua los ntawm tooj liab. Nrog rau kev cia siab tias nws tuaj yeem tig tau ywj pheej ntawm nws qhov axis. Tam sim no qhov kev sim nws tus kheej. Koj pib tig cov hlau nplaum, qhov no tsim ib daim teb uasyog tsiv. Eddy tam sim no pib tshwm nyob rau hauv lub tog raj kheej tooj liab, uas tiv thaiv cov hlau nplaum.
Vim li no, lub tog raj kheej tooj liab pib tig mus rau qhov kev taw qhia uas cov hlau nplaum mus tas li. Ntxiv mus, nws ceev yog me ntsis qis. Yog vim li cas rau qhov no yog hais tias nyob rau hauv sib npaug zos ceev, cov kab ntawm quab yuam tsis cuam tshuam nrog lub teb ntawm cov hlau nplaum. Lub magnetic teb rotates synchronously. Tab sis qhov ceev ntawm cov hlau nplaum nws tus kheej tsis synchronous. Thiab yog tias koj luv lub ntsiab lus me ntsis, ces nws yog asynchronous. Li no lub npe ntawm lub tshuab hluav taws xob - lub tshuab hluav taws xob asynchronous. Hais lus kwv yees, AC lub cev muaj zog Circuit Court yog kwv yees li tib yam li hauv qhov kev sim saum toj no. Tsuas yog cov hlau nplaum yog tsim los ntawm stator winding.
DC Motors
Lawv txawv me ntsis ntawm AC induction motors. Ua ntej, nws muaj ib lossis ob lub stator windings. Qhov thib ob, txoj kev hloov ntawm rotor ceev yog qhov txawv me ntsis. Tab sis cov kev taw qhia ntawm kev sib hloov ntawm lub rotor yog hloov los ntawm polarity reversal (rau asynchronous machines, cov theem ntawm lub mains yog thim rov qab). Koj tuaj yeem hloov lub rotor ceev ntawm DC lub cev muaj zog los ntawm kev nce lossis txo qhov voltage thov rau stator winding.
A DC lub cev muaj zog tsis tuaj yeem ua haujlwm yam tsis muaj qhov ua kom muaj zog uas nyob ntawm lub rotor. Qhov hluav taws xob yog kis tau los ntawm kev siv txhuam txhuam. Qhov no yog qhov tsis ntseeg siab tshaj plaws ntawm kev tsim. Cov txhuam hniav ua los ntawm graphite hnav dhau sijhawm, ua rau tsis ua haujlwm.cav xav tau kev kho. Nco ntsoov tias AC thiab DC motors muaj tib yam khoom, tab sis lawv cov qauv tsim txawv heev.
Electric motor design
Zoo li lwm lub tshuab hluav taws xob tsis zoo li qub, lub tshuab hluav taws xob induction muaj ob qhov tseem ceeb - stator thiab rotor. Thawj lub ntsiab yog tsau, peb windings tau muab tso rau ntawm nws, uas yog kev cob cog rua raws li ib tug tej yam tswv yim. Lub rotor yog txav tau, nws tsim yog hu ua "squirrel tawb". Yog vim li cas rau lub npe no yog hais tias lub internal qauv yog heev zoo li ib tug squirrel log.
Qhov kawg, tau kawg, tsis nyob hauv lub tshuab hluav taws xob. Lub rotor yog nruab nrab siv ob lub hau mounted rau ntawm stator. Lawv muaj cov kabmob uas ua rau kev sib hloov yooj yim dua. Lub impeller yog ntsia rau sab nraum qab ntawm lub cev muaj zog. Nrog nws cov kev pab, qhov txias ntawm lub tshuab hluav taws xob yog nqa tawm. Lub stator muaj ribs uas txhim kho cua sov dissipation. Yog li, AC motors ua haujlwm nyob rau hauv ib txwm thermal tej yam kev mob.
Induction motor stator
Nws tsim nyog sau cia tias lub stator ntawm niaj hnub asynchronous electric motors muaj cov ncej uas tsis tau nthuav tawm. Txhawm rau muab nws yooj yim, sab hauv ntawm tag nrho saum npoo yog zoo kawg nkaus du. Txhawm rau txo qhov poob tam sim no, cov tub ntxhais yog tsim los ntawm cov ntawv nyias nyias ntawm cov hlau. Cov nplooj ntawv no tau nyob ze rau ib leeg thiab tom qab ntawd tau kho nyob rau hauv ib lub vaj tsev ua los ntawmua. Lub stator muaj qhov rau tso windings.
Cov windings yog ua los ntawm tooj liab hlau. Lawv kev sib txuas yog ua nyob rau hauv "lub hnub qub" lossis "daim duab peb sab". Nyob rau hauv lub Upper ib feem ntawm cov ntaub ntawv muaj ib tug me me daim ntaub thaiv npog, kiag li insulated. Nws muaj kev sib cuag rau kev sib txuas thiab txuas cov windings. Ntxiv mus, koj tuaj yeem txuas cov windings siv jumpers ntsia hauv daim ntaub thaiv no. Cov cuab yeej ntawm AC lub cev muaj zog tso cai rau koj txuas cov windings mus rau qhov xav tau Circuit Court.
Induction lub cev muaj zog rotor
Muaj me ntsis twb hais txog nws. Nws zoo li ib tug squirrel tawb. Cov qauv rotor yog sib sau ua ke los ntawm cov ntawv nyias nyias, zoo li stator. Muaj ib qho winding hauv grooves ntawm rotor, tab sis nws tuaj yeem ua tau ntau yam. Nws tag nrho nyob ntawm seb lub theem lossis squirrel-cage rotor. Cov qauv tsim tshiab tshaj plaws. Thick tooj liab rods haum rau hauv grooves yam tsis muaj cov khoom siv insulating. Ob qhov kawg ntawm cov pas nrig no txuas nrog tooj liab rings. Qee lub sij hawm cam khwb cia rotors yog siv es tsis txhob squirrel tawb.
Tab sis kuj tseem muaj AC motors nrog rau theem rotor. Lawv tau siv ntau tsawg zaus, feem ntau yog rau cov tshuab hluav taws xob, uas muaj zog heev. Qhov thib ob qhov teeb meem uas yuav tsum tau siv cov theem rotors nyob rau hauv hluav taws xob motors yog tsim los ntawm ib tug loj quab yuam thaum lub sij hawm tso tawm. Muaj tseeb, rau qhov no koj yuav tsum tau siv rheostat tshwj xeeb.
Txoj kev pib lub tshuab asynchronous
Pib lub AC induction lub cev muaj zog yog ib qho yooj yim, tsuas yog txuas cov stator windings mus rau peb-theem network. Kev sib txuas yog tsim los ntawm kev sib nqus pib. Ua tsaug rau lawv, koj yuav luag automate lub community launch. Txawm tias qhov thim rov qab tuaj yeem ua tiav yam tsis muaj kev nyuaj ntau. Tab sis qee zaus nws yog ib qho tsim nyog los txo qhov voltage uas tau muab rau hauv stator windings.
Qhov no yog ua tiav los ntawm kev siv "daim duab peb sab" txoj kev txuas. Nyob rau hauv rooj plaub no, qhov pib yog ua thaum lub windings txuas nrog raws li "hnub qub" tswvyim. Nrog rau kev nce ntawm tus naj npawb ntawm cov kiv puag ncig, ncav cuag tus nqi siab tshaj ntawm winding, nws yog ib qho tsim nyog los hloov mus rau "daim duab peb sab" tswvyim. Hauv qhov no, kev noj tam sim no raug txo los ntawm peb zaug. Tab sis nws yuav tsum raug coj mus rau hauv tus account tias tsis yog txhua tus stator tuaj yeem ua haujlwm ib txwm muaj thaum txuas nrog raws li "delta" scheme.
Kev tswj ceev
Nyob hauv kev lag luam thiab lub neej niaj hnub, zaus hloov pauv tau nrov zuj zus. Nrog lawv cov kev pab, koj tuaj yeem hloov qhov ceev ntawm kev sib hloov ntawm lub rotor nrog me ntsis txav ntawm koj txhais tes. Nws yog ib nqi sau cia hais tias AC motors yog siv nyob rau hauv kev sib txuas nrog zaus converters nyob rau hauv feem ntau mechanisms. Nws tso cai rau koj los kho cov tsav tsheb zoo, thaum tsis tas yuav siv cov pib sib nqus. Tag nrho cov tswj tau txuas nrog cov neeg nyob ntawm lub zaus hloov pauv. Cov chaw tso cai rau koj hloov lub sijhawm ntawm kev nrawm ntawm lub rotor ntawm lub tshuab hluav taws xob, nws nres, lub sijhawm ntawm qhov tsawg kawg nkaus thiab siab tshaj plaws, nrog rau ntau yam kev tiv thaiv.functions.
Zoo kawg
Tam sim no koj paub tias AC lub cev muaj zog ua haujlwm li cas. Peb txawm kawm txog qhov tsim ntawm lub tshuab asynchronous nrov tshaj plaws. Nws yog qhov pheej yig tshaj ntawm txhua yam uas nyob hauv khw. Tsis tas li ntawd, rau nws txoj haujlwm ib txwm muaj, tsis tas yuav siv ntau yam khoom siv pabcuam. Hauv particular, rheostats. Thiab tsuas yog ib qho ntxiv raws li qhov hloov pauv zaus tuaj yeem pab txhawb kev ua haujlwm ntawm lub tshuab hluav taws xob asynchronous, nthuav dav nws lub peev xwm.
