Qhov sib txawv ntawm synchronous motor thiab asynchronous motor
Lub hauv paus ntsiab lus ua haujlwm ntawm lub tshuab asynchronous(induction lub cev muaj zog) yog tsim kom muaj qhov cuam tshuam tam sim no hauv lub rotor los ntawm kev sib nqus sib nqus ntawm lub stator, tsim hluav taws xob torque, thiab cov hlau nplaum tsis ncaj qha rau hauv lub rotor. Yog li ntawd, qhov kev sib hloov ceev ntawm lub rotor yuav tsum tsawg tshaj li qhov synchronous ceev (tsis muaj qhov sib txawv, uas yog, tus nqi qis, tsis muaj rotor induced tam sim no), yog li nws yog hu ua asynchronous motor: thiab synchronous motor rotor. Nws tus kheej tsim ib qho chaw ruaj khov magnetic teb (siv cov hlau nplaum ruaj khov lossis DC tam sim no tsim tawm. Lub stator rotating magnetic teb "dras" lub rotor magnetic teb (rotor) tig, yog li lub rotor ceev yuav tsum sib npaug rau synchronous ceev, uas tseem hu ua synchronous motor.
Thaum siv los ua lub tshuab hluav taws xob, feem ntau lawv siv cov tshuab asynchronous; cov generators yog tag nrho cov tshuab synchronous. Qhov txawv ntawm synchronous lub cev muaj zog thiab asynchronous lub cev muaj zog:
Thaum peb-theem alternating tam sim no dhau los ntawm winding ntawm ib tug qauv, ib tug rotating magnetic teb yog generated. Nyob rau hauv qhov kev txiav txim ntawm rotating magnetic teb, lub rotor rotates nrog rotating magnetic teb. Yog hais tias lub rotating ceev ntawm lub rotor yog raws nraim tib yam li lub rotating magnetic teb, nws yog ib tug synchronous lub cev muaj zog; Yog hais tias qhov kev sib hloov ceev ntawm lub rotor yog me dua lub magnetic teb Qhov ceev, uas yog hais tias ob yog tsis synchronized, yog lub asynchronous lub cev muaj zog. Lub tshuab asynchronous muaj cov qauv yooj yim thiab siv dav. Lub tshuab hluav taws xob synchronous xav kom lub rotor kom muaj cov hlau nplaum ruaj khov (cov hlau nplaum tas mus li lossis hluav taws xob), xws li lub tshuab hluav taws xob thiab lub tshuab hluav taws xob synchronous AC. Lub stator ceev yog tsawg dua qhov kev sib hloov ceev ntawm rotating magnetic teb thiab yog li hu ua asynchronous motor. Nws yog qhov pib zoo ib yam li lub cev muaj zog induction.
s=(ns - n) / ns. s yog qhov sib piv, ns yog qhov sib nqus nrawm, thiab n yog qhov rotor ceev.
Yam Tseem Ceeb:
(1) Thaum peb-theem asynchronous lub cev muaj zog txuas nrog peb-theem AC lub zog, peb-theem stator winding ntws los ntawm peb-theem magnetomotive force (stator rotational magnetomotive force) tsim los ntawm peb-theem symmetrical tam sim no thiab generates ib rotating magnetic teb.
(2) Lub rotating magnetic teb muaj ib tug txheeb ze txiav suab nrog lub rotor conductor, thiab raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, rotor conductor generates ib tug induced electromotive quab yuam thiab generates ib tug induced tam sim no.
(3) Raws li txoj cai ntawm electromagnetic quab yuam, tam sim no-nqa rotor conductor yog raug rau electromagnetic quab yuam nyob rau hauv magnetic teb los tsim electromagnetic torque, uas tsav lub rotor tig. Thaum lub cev muaj zog ncej muaj ib tug neeg kho tshuab load, nws outputs mechanical zog sab nraud.
Nta:
Qhov zoo: cov qauv yooj yim, kev tsim khoom yooj yim, tus nqi qis thiab ua haujlwm yooj yim.
Disadvantages: Fais fab mov lag luam, lub teeb load fais fab tuag yog tsawg, thiab ceev tswj kev ua tau zoo me ntsis zuj zus. Feem ntau yog siv rau cov tshuab hluav taws xob, feem ntau tsis ua cov tshuab hluav taws xob!
Lub cev muaj zog asynchronous yog AC lub cev muaj zog uas nws qhov sib piv ntawm qhov ceev ntawm qhov thauj khoom mus rau qhov zaus ntawm daim phiaj sib txuas tsis tas li. Asynchronous motors muaj xws li induction motors, doubly-fed induction motors, thiab AC commutator motors. Induction motors yog feem ntau siv, thiab feem ntau, induction motors yog asynchronous motors tsis ua rau kev nkag siab yuam kev lossis tsis meej pem.
Lub stator winding ntawm ib qho asynchronous lub cev muaj zog txuas nrog AC daim phiaj, thiab lub rotor winding tsis tas yuav txuas nrog lwm qhov chaw siv hluav taws xob. Yog li ntawd, nws muaj qhov zoo ntawm cov qauv yooj yim, yooj yim siv, siv thiab txij nkawm, txhim khu kev qha lag luam, tsis zoo thiab tus nqi qis. Asynchronous motors muaj kev ua haujlwm siab dua thiab cov yam ntxwv ua haujlwm zoo dua, thiab lawv nyob ze rau kev ua haujlwm ceev tsis tu ncua los ntawm tsis muaj kev thauj khoom mus rau tag nrho cov khoom thauj, uas tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm feem ntau cov khoom lag luam thiab kev ua liaj ua teb. Asynchronous motors kuj yog ib qho yooj yim los tsim ntau yam kev tiv thaiv qauv kom haum rau ib puag ncig sib txawv. Thaum lub asynchronous lub cev muaj zog khiav, lub zog reactive yuav tsum tau kos los ntawm daim phiaj kom lub zog ntawm daim phiaj tsis zoo. Yog li ntawd, synchronous motors feem ntau yog siv rau kev tsav tsheb siab, cov cuab yeej siv hluav taws xob qis xws li pob zeb thiab compressors. Txij li qhov ceev ntawm lub asynchronous lub cev muaj qhov sib txawv hauv kev sib hloov ceev nrog lub rotating magnetic teb, cov kev tswj ceev kev ua haujlwm tsis zoo (tshwj tsis yog AC commutator motor). Nws yog kev lag luam thiab yooj yim siv DC motors rau kev thauj mus los machinery, dov mills, cov cuab yeej siv tshuab loj, luam ntawv thiab dyeing thiab papermaking machinery uas yuav tsum tau muaj ntau yam ceev thiab du. Txawm li cas los xij, nrog rau kev txhim kho cov khoom siv hluav taws xob siab thiab AC ceev tswj cov tshuab, kev tswj xyuas kev ua haujlwm ceev thiab kev lag luam ntawm asynchronous motors tam sim no haum rau kev tswj ceev nrawm yog piv rau cov DC motors.
Synchronous motors, zoo li induction motors, yog ib hom AC lub cev muaj zog. Tus yam ntxwv yog: nyob rau hauv kev ua haujlwm tsis tu ncua, muaj kev sib raug zoo ntawm rotor ceev thiab daim phiaj zaus n=ns=60f/p, ns yog hu ua synchronous ceev. Yog hais tias qhov zaus ntawm daim phiaj yog tas li, qhov ceev ntawm lub synchronous lub cev muaj zog ntawm lub xeev khov kho yog qhov tsis tu ncua thiab ywj siab ntawm qhov loj ntawm qhov load.
