16 valve cav nqi hauv pakistan dynamo rau hluav taws xob tsim
Single-theem lub cev muaj zog capacitance:
(1) Muaj qhov hluav taws xob ntau dua 220v * 1.41 ＝ 310V, 400V
(2) Electrodeless capacitor yuav tsum xaiv rau polarity
(3) Capacitor muaj peev xwm / ntsuas lub zog ≥ 10nf / 100w
Yog tias koj lub cev muaj zog yog 370w * 10nf / 100w = 37nf
Peb theem asynchronous lub cev muaj zog yog ib yam ntawm lub cev muaj zog los ntawm 380V peb-theem AC fais fab mov (theem sib txawv ntawm 120 °). Vim hais tias lub rotor thiab stator rotating magnetic teb ntawm peb-theem asynchronous lub cev muaj zog tig nyob rau hauv tib txoj kev thiab nyob rau hauv sib txawv speeds, muaj plam, yog li nws yog hu ua peb-theem asynchronous lub cev muaj zog.
txoj haujlwm ua haujlwm
Muaj ntau hom ntawm lub cev muaj zog, tab sis nws txoj haujlwm ua haujlwm yog raws li txoj cai ntawm electromagnetic induction thiab txoj cai ntawm electromagnetic force. Yog li ntawd, lub hauv paus ntsiab lus ntawm nws cov qauv yog siv cov khoom sib nqus thiab cov khoom siv hluav taws xob tsim nyog los tsim ib lub voj voog sib nqus thiab Circuit Court rau kev sib nrig sib electromagnetic induction, thiaj li tsim hluav taws xob electromagnetic thiab ua tiav lub hom phiaj ntawm lub zog hloov dua siab tshiab.
Peb-theem asynchronous lub cev muaj zog yog induction lub cev muaj zog. Tom qab lub stator muab tam sim no, ib feem ntawm cov magnetic flux dhau los ntawm lub nplhaib luv luv thiab generates induced tam sim no. Cov tam sim no nyob rau hauv lub luv luv-circuit nplhaib cuam tshuam qhov kev hloov ntawm magnetic flux, uas ua rau ib theem sib txawv ntawm cov hlau nplaum flux generated los ntawm ib feem nrog thiab tsis muaj lub luv luv-circuit nplhaib, yog li tsim ib tug rotating magnetic teb. Tom qab lub hwj chim rau thiab pib, lub rotor winding induces electromotive quab yuam thiab tam sim no vim qhov txheeb ze txav ntawm lub rotor winding thiab magnetic teb, uas yog, lub rotating magnetic teb muaj ib tug txheeb ze ceev nrog lub rotor, thiab interacts nrog cov hlau nplaum. teb los tsim electromagnetic torque, uas ua rau lub rotor tig thiab paub lub zog hloov dua siab tshiab.
Kev faib tawm ntawm lub cev muaj zog
1. Kev faib tawm los ntawm kev ua haujlwm fais fab
Raws li kev ua haujlwm sib txawv ntawm lub cev muaj zog, nws tuaj yeem muab faib ua DC lub cev muaj zog thiab AC lub cev muaj zog. AC lub cev muaj zog kuj tau muab faib ua ib-theem lub cev muaj zog thiab peb-theem lub cev muaj zog.
2. Kev faib tawm raws li cov qauv thiab cov qauv kev ua haujlwm
Raws li cov qauv sib txawv thiab kev ua haujlwm ntawm lub cev muaj zog, nws tuaj yeem muab faib ua DC lub cev muaj zog, lub cev muaj zog asynchronous thiab synchronous lub cev muaj zog.
Synchronous lub cev muaj zog tuaj yeem muab faib ua cov hlau nplaum ruaj khov synchronous lub cev muaj zog, tsis kam synchronous lub cev muaj zog thiab hysteresis synchronous lub cev muaj zog.
Asynchronous lub cev muaj zog tuaj yeem muab faib ua induction motor thiab AC commutator motor. Induction lub cev muaj zog yog muab faib ua peb-theem asynchronous lub cev muaj zog, ib-theem asynchronous lub cev muaj zog thiab ntxoov ntxoo ncej asynchronous lub cev muaj zog. AC commutator lub cev muaj zog yog muab faib ua ib-theem series excitation motor, AC / DC dual-lub hom phiaj lub cev muaj zog thiab repulsion lub cev muaj zog.
Raws li cov qauv thiab kev ua haujlwm, DC lub cev muaj zog tuaj yeem muab faib ua brushless DC lub cev muaj zog thiab txhuam DC lub cev muaj zog. Txhuam DC lub cev muaj zog tuaj yeem muab faib ua cov hlau nplaum ruaj khov DC lub cev muaj zog thiab electromagnetic DC lub cev muaj zog. Electromagnetic DC lub cev muaj zog yog muab faib ua series zoo siab DC lub cev muaj zog, thaum uas tig mus zoo siab DC lub cev muaj zog, cais DC lub cev muaj zog thiab sib xyaw ua ke zoo siab DC lub cev muaj zog. Cov hlau nplaum ruaj khov DC lub cev muaj zog tau muab faib ua lub ntiaj teb tsis tshua muaj hlau nplaum DC lub cev muaj zog, ferrite ruaj khov hlau nplaum DC lub cev muaj zog thiab txhuas nickel cobalt mus tas li hlau nplaum DC lub cev muaj zog.
3. Kev faib tawm los ntawm kev pib thiab kev ua haujlwm
Raws li qhov sib txawv pib thiab kev khiav hauj lwm hom ntawm lub cev muaj zog, nws muaj peev xwm muab faib mus rau hauv capacitor pib ib-theem asynchronous lub cev muaj zog, capacitor kev khiav hauj lwm ib-theem asynchronous lub cev muaj zog, capacitor pib ua hauj lwm ib-theem asynchronous lub cev muaj zog thiab phua theem ib-theem asynchronous lub cev muaj zog.
16 valve cav nqi hauv pakistan dynamo rau hluav taws xob tsim
4. Kev faib tawm los ntawm kev siv
Nws tuaj yeem muab faib ua tsav tsav thiab tswj lub cev muaj zog.
Lub cev muaj zog rau kev tsav tsheb tau muab faib ua lub cev muaj zog rau cov cuab yeej hluav taws xob (xws li drilling, polishing, polishing, slotting, txiav, reaming thiab lwm yam cuab yeej) Lub cev muaj zog rau cov khoom siv hauv tsev (xws li tshuab ntxhua khaub ncaws, hluav taws xob kiv cua, tub yees, cua txias, cua txias, daim kab xev kaw, video recorders, DVD players, lub tshuab nqus tsev nqus tsev vacuum, koob yees duab, tshuab plaub hau, hluav taws xob shavers, thiab lwm yam) thiab motors rau lwm yam me me txhua yam khoom siv (xws li ntau yam me me machinery, machinery me me, khoom siv kho mob, electronics, thiab lwm yam).
Tswj lub cev muaj zog muab faib ua stepping motor thiab servo motor.
5. kev faib tawm raws li cov qauv rotor
Raws li cov qauv ntawm lub rotor, lub cev muaj zog tuaj yeem muab faib ua lub tawb induction lub cev muaj zog (hu ua squirrel tawb induction lub cev muaj zog hauv cov qauv qub) thiab lub qhov txhab rotor induction lub cev muaj zog (hu ua qhov txhab rotor induction lub cev muaj zog hauv cov qauv qub).
6. Kev faib tawm los ntawm kev khiav ceev
Raws li kev khiav ceev ntawm lub cev muaj zog, nws tuaj yeem muab faib ua lub cev muaj zog, lub cev muaj zog qis, lub cev muaj zog tsis tu ncua thiab ceev tswj lub cev muaj zog.
Tsawg ceev motors tau muab faib ua iav txo motors, electromagnetic txo motors, torque motors thiab claw ncej synchronous motors.
Ntxiv nrog rau cov kauj ruam tsis tu ncua lub cev muaj zog, lub cev tsis muaj zog tsis tu ncua, lub cev muaj zog tsis sib xws thiab lub cev tsis muaj zog tsis hloov pauv ceev, lub cev muaj zog kuj tseem tuaj yeem muab faib ua hluav taws xob sib txawv ntawm lub cev muaj zog, DC hloov pauv ceev lub cev muaj zog, PWM Kev hloov pauv zaus hloov pauv ceev lub cev muaj zog thiab switched reluctant variable speed motor.
Lub rotor ceev ntawm asynchronous lub cev muaj zog yog ib txwm qis dua lub synchronous ceev ntawm rotating magnetic teb.
Lub rotor ceev ntawm lub tshuab synchronous yog ib txwm khaws cia ntawm qhov ceev synchronous tsis hais lub nra.
Basic txheej txheem ua haujlwm:
(1) Thaum peb-theem asynchronous lub cev muaj zog txuas nrog peb-theem AC fais fab mov (txhua qhov sib txawv ntawm 120 degrees), peb-theem stator winding ntws los ntawm peb-theem magnetomotive force (stator rotating magnetomotive force) generated los ntawm peb-theem symmetrical tam sim no thiab generates ib rotating magnetic teb, uas rotates clockwise raws lub puab ncig qhov chaw ntawm lub stator thiab rotor ntawm lub synchronous ceev N0.
(2) Lub rotating magnetic teb muaj txheeb ze txiav suab nrog lub rotor neeg xyuas pib. Raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, lub rotor conductor (rotor winding yog ib txoj kev kaw) generates induced electromotive force thiab induced tam sim no (kev taw qhia ntawm induced electromotive quab yuam yog txiav txim los ntawm txoj cai sab xis).
(3) Raws li txoj cai ntawm electromagnetic quab yuam, nyob rau hauv qhov kev txiav txim ntawm induced electromotive quab yuam, rotor neeg xyuas pib yuav tsim ib tug induced tam sim no yeej raws li cov kev taw qhia ntawm induced electromotive quab yuam. Tam sim no nqa rotor tus neeg xyuas pib cuam tshuam los ntawm lub zog hluav taws xob hauv cov hlau nplaum tsim los ntawm stator (kev taw qhia ntawm lub zog yog txiav txim los ntawm txoj cai sab laug). Lub electromagnetic quab yuam tsim ib qho hluav taws xob torque ntawm lub cev muaj zog rotor ncej, tsav lub cev muaj zog rotor kom tig raws cov kev taw qhia ntawm rotating magnetic teb. Thaum lub cev muaj zog ncej loaded nrog mechanical load, nws yuav tso tawm txhua yam zog sab nraud. Txij li thaum lub nplhaib sib nqus ntawm qhov tsis muaj lub nplhaib luv luv yog ua ntej ntawm qhov nrog luv-circuit nplhaib, kev sib hloov ntawm lub cev muaj zog yog tib yam li qhov sib nqus sib nqus.
16 valve cav nqi hauv pakistan dynamo rau hluav taws xob tsim
Yog vim li cas asynchronous lub cev muaj zog
Vim hais tias qhov induced tam sim no nyob rau hauv lub rotor kauj ntawm peb-theem asynchronous lub cev muaj zog yog generated vim lub txheeb ze txav ntawm lub rotor neeg xyuas pib thiab lub magnetic teb. Lub rotor ceev ntawm peb-theem asynchronous lub cev muaj zog yuav tsis tau synchronized nrog rotating magnetic teb, thiab nws yuav tsis tshaj qhov ceev ntawm rotating magnetic teb. Yog hais tias lub rotating ceev ntawm lub rotor ntawm peb-theem asynchronous lub cev muaj zog yog sib npaug zos rau rotating ceev ntawm rotating magnetic teb, yuav tsis muaj txheeb ze txav ntawm lub magnetic teb thiab lub rotor, thiab tus neeg xyuas pib tsis tuaj yeem txiav txoj kab sib nqus ntawm lub zog. , yog li qhov induced electromotive quab yuam thiab tam sim no yuav tsis raug generated nyob rau hauv lub rotor kauj, thiab rotor neeg xyuas pib ntawm peb-theem asynchronous lub cev muaj zog yuav tsis raug cuam tshuam los ntawm lub electromagnetic quab yuam nyob rau hauv lub magnetic teb kom lub rotor tig. Yog li ntawd, lub rotor kev sib hloov ceev ntawm peb-theem asynchronous lub cev muaj zog tsis tuaj yeem zoo ib yam li qhov sib nqus sib nqus, thiab ib txwm tsawg dua li qhov sib nqus nrawm ntawm qhov sib nqus sib nqus. Txawm li cas los xij, nyob rau hauv hom kev ua haujlwm tshwj xeeb (xws li lub zog tsim hluav taws xob), lub rotor ceev ntawm peb-theem asynchronous lub cev muaj zog tuaj yeem siab dua qhov ceev synchronous.
Peb theem asynchronous lub cev muaj zog torque
Symmetrical 3-theem winding txuas nrog symmetrical 3-theem tam sim no los ua kom muaj qhov sib nqus sib nqus. Lub magnetic teb hlau txiav lub rotor winding. Raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, e thiab kuv yog generated nyob rau hauv lub rotor winding. Lub rotor winding yog cuam tshuam los ntawm electromagnetic quab yuam nyob rau hauv lub magnetic teb, uas yog, electromagnetic torque yog generated los ua kom lub rotor tig. Lub rotor outputs mechanical zog thiab tsav cov neeg kho tshuab load tig.
Hauv AC lub cev muaj zog, thaum lub stator winding dhau los ntawm AC tam sim no, lub armature magnetomotive quab yuam raug tsim, uas muaj kev cuam tshuam zoo rau lub zog hloov pauv thiab kev ua haujlwm ntawm lub cev muaj zog. Yog li ntawd, peb-theem AC winding yog txuas nrog peb-theem AC los tsim lub zog ntawm lub zog magnetomotive, uas tuaj yeem decomposed rau hauv ob lub zog magnetomotive nrog sib npaug amplitude thiab opposite ceev, thiaj li tsim tau rau pem hauv ntej thiab thim rov qab magnetic teb nyob rau hauv cov huab cua sib txawv. Ob qhov kev sib nqus sib nqus no txiav cov rotor tus neeg xyuas pib thiab tsim kom muaj zog hluav taws xob thiab induced tam sim no nyob rau hauv lub rotor conductor feem.
Cov tam sim no cuam tshuam nrog lub magnetic teb los tsim qhov zoo thiab tsis zoo electromagnetic torque. Lub pem hauv ntej electromagnetic torque sim ua kom lub rotor tig rau pem hauv ntej; Qhov rov qab electromagnetic torque sim thim rov qab lub rotor. Lub superposition ntawm ob lub torque no yog cov hluavtaws torque uas tsav lub cev muaj zog tig.
16 valve cav nqi hauv pakistan dynamo rau hluav taws xob tsim
Peb theem asynchronous lub cev muaj zog ceev
Peb alternating tam sim no txuas nrog lub stator ntawm lub cev muaj zog los ua kom muaj qhov sib nqus sib nqus ntawm qhov ceev ntawm N0. Cov ncej sib txawv P, nyob rau hauv qhov kev txiav txim ntawm AC nrog tib zaus f = 50hz, yuav tsim sib txawv synchronous speeds N0, n0 = 60f / p.
Qhov ceev ntawm lub cev muaj zog rotor yog tsawg dua li ntawm qhov sib nqus sib nqus, uas yog qhov pib zoo ib yam li lub cev muaj zog induction. s = (ns-n) / ns. S yog tus nqi swb,
NS yog qhov sib nqus nrawm thiab N yog qhov ceev rotor.
Hom peb-theem asynchronous lub cev muaj zog
Raws li cov qauv sib txawv rotor, peb-theem asynchronous motors tuaj yeem muab faib ua hom tawb thiab hom kab mob.
Cage rotor asynchronous lub cev muaj zog tau siv dav vim nws cov qauv yooj yim, kev lag luam txhim khu kev qha, lub teeb yuag thiab tus nqi qis. Nws lub ntsiab tsis zoo yog qhov nyuaj ntawm kev ceev ceev.
Lub rotor thiab stator ntawm lub qhov txhab peb-theem asynchronous lub cev muaj zog kuj tau nruab nrog peb-theem windings thiab txuas nrog sab nraud rheostat los ntawm lub nplhaib plam thiab txhuam. Kho qhov rheostat kuj tuaj yeem txhim kho qhov pib ua haujlwm ntawm lub cev muaj zog thiab kho qhov ceev ntawm lub cev muaj zog.
Peb theem asynchronous lub cev muaj zog nta:
Qhov zoo: piv nrog ib-theem asynchronous lub cev muaj zog, peb-theem asynchronous lub cev muaj qhov zoo ntawm cov qauv yooj yim, siv tau yooj yim, kev ua haujlwm zoo, txuag ntau yam ntaub ntawv thiab tus nqi qis.
Disadvantages: lagging fais fab tuag, tsis tshua muaj lub teeb load zog yam tseem ceeb thiab tsis zoo ceev tswj kev ua tau zoo.
Siv peb-theem asynchronous lub cev muaj zog
Lub zog ntawm peb-theem asynchronous lub cev muaj zog yog loj, thiab nws yog tsuas yog ua rau lub cev muaj zog loj. Nws feem ntau yog siv rau hauv cov khoom siv loj loj nrog lub zog triple theem. Ua ntej tshaj plaws, peb-theem asynchronous lub cev muaj zog tsuas yog siv los ua lub cev muaj zog, tsis tshua muaj lub tshuab hluav taws xob, thiab txhua lub tshuab hluav taws xob synchronous yog siv rau kev tsim hluav taws xob.
Rau lub zog me me peb-theem asynchronous lub cev muaj zog hauv qab 1kW, nws tuaj yeem tsis tsuas yog ua haujlwm peb-theem, tab sis kuj tseem ua haujlwm ib-theem.
Classification ntawm DC motors
Lub excitation hom ntawm DC lub cev muaj zog hais txog qhov teeb meem ntawm yuav ua li cas muab lub zog rau lub excitation winding thiab tsim excitation magnetic flux los tsim lub ntsiab magnetic teb. Raws li kev sib txawv excitation hom, DC motors tuaj yeem muab faib ua hom hauv qab no.
Excitation hom ntawm DC lub cev muaj zog
1. cais DC lub cev muaj zog
Lub excitation winding tsis txuas nrog armature winding, tab sis DC lub cev muaj zog muab los ntawm lwm cov khoom siv hluav taws xob DC rau lub excitation winding yog hu ua cais DC lub cev muaj zog, thiab cov xaim yog qhia hauv daim duab (a). Hauv daim duab, M sawv cev rau lub cev muaj zog, thiab yog tias nws yog lub tshuab hluav taws xob, G sawv cev rau nws. Cov hlau nplaum tas mus li DC lub cev muaj zog kuj tuaj yeem suav tias yog cais DC lub cev muaj zog.
2. Shunt DC lub cev muaj zog
Lub excitation winding thiab armature winding ntawm Shunt DC lub cev muaj zog yog txuas nrog nyob rau hauv parallel, thiab cov xaim muaj nyob rau hauv daim duab (b). Raws li shunt excitation generator, lub davhlau ya nyob twg voltage los ntawm lub cev muaj zog nws tus kheej muab lub zog rau lub excitation winding; Raws li ib tug shunt lub cev muaj zog, lub excitation winding thiab armature qhia tib lub hwj chim mov, uas yog tib yam li hais tias tus cais excitation DC motor nyob rau hauv cov nqe lus ntawm kev ua tau zoo.
3. series zoo siab DC lub cev muaj zog
Lub excitation winding ntawm lub series zoo siab DC lub cev muaj zog yog txuas nrog rau hauv series nrog armature winding, thiab ces txuas nrog DC fais fab mov. Cov kab hluav taws xob tau pom hauv daim duab (c). Lub excitation tam sim no ntawm DC lub cev muaj zog yog armature tam sim no.
16 valve cav nqi hauv pakistan dynamo rau hluav taws xob tsim
4. compound DC lub cev muaj zog
Lub compound excitation DC lub cev muaj zog muaj ob lub excitation windings, thaum uas tig mus excitation thiab series excitation, thiab cov hlau yog qhia nyob rau hauv daim duab (d). Yog hais tias qhov sib nqus flux generated los ntawm series excitation winding thiab parallel excitation winding muaj tib cov kev taw qhia, nws yog hu ua cumulative compound excitation. Yog tias ob qhov sib nqus fluxes muaj qhov sib txawv, nws yog hu ua qhov sib txawv ntawm qhov sib txawv.
DC motors nrog ntau hom excitation muaj cov yam ntxwv sib txawv. Feem ntau, lub ntsiab excitation hom ntawm DC lub cev muaj zog yog thaum uas tig mus excitation, series excitation thiab compound excitation. Lub ntsiab excitation hom ntawm DC generator yog cais excitation, parallel excitation thiab compound excitation.
Cov yam ntxwv ntawm DC lub cev muaj zog
(1) Kev tswj ceev ceev ua haujlwm tau zoo. Lub npe hu ua "kev tswj hwm kev ua tau zoo" yog hais txog qhov ceev ntawm lub cev muaj zog yog hloov pauv raws li qhov xav tau hauv qee yam kev thauj khoom. DC lub cev muaj zog tuaj yeem paub txawm thiab du stepless ceev tswj nyob rau hauv hnyav load, thiab cov kev tswj ceev yog dav.
(2) Loj pib torque. Kev tswj ceev tuaj yeem pom tau zoo ib yam thiab kev lag luam. Yog li ntawd, tag nrho cov tshuab uas pib nyob rau hauv hnyav load los yog xav tau kev hloov ceev, xws li loj reversible steel dov zeb, winch, hluav taws xob locomotive, tram, thiab lwm yam, yog tsav los ntawm DC lub cev muaj zog.
Txoj haujlwm ua haujlwm ntawm DC lub cev muaj zog
Txoj haujlwm ua haujlwm ntawm DC lub cev muaj zog
Lub hauv paus ntsiab lus ntawm "lub zog ua haujlwm ntawm lub zog hluav taws xob hauv qhov chaw sib nqus" yog siv roughly. Ob qhov kawg ntawm cov xov hlau excitation coil muaj tib qhov tam sim no nyob rau hauv qhov sib txawv, uas ua rau tag nrho cov coil tsim lub torsion nyob ib ncig ntawm lub ncej thiab ua rau lub kauj tig.
Ua kom lub armature tau txais ib qho hluav taws xob torque nrog tib cov kev taw qhia, qhov tseem ceeb nyob rau hauv yuav ua li cas hloov cov kev taw qhia ntawm lub tam sim no ntws los ntawm lub kauj nyob rau hauv lub sij hawm thaum lub coil sab nyob rau hauv lub sib nqus ncej ntawm txawv polarity, uas yog, yog li ntawd. hu ua "commutation". Yog li ntawd, ib tug ntaus ntawv hu ua commutator yuav tsum tau ntxiv. Lub commutator thiab txhuam tuaj yeem ua kom ntseeg tau tias tam sim no nyob rau hauv lub coil sab hauv qab txhua tus ncej yog ib txwm nyob rau hauv tib txoj kev, kom lub cev muaj zog tuaj yeem tig tsis tu ncua. Qhov no yog lub hauv paus ntsiab lus ntawm DC lub cev muaj zog.
