Asynchronous ea mekhahlelo e merarokoloike mofuta oa enjene ea induction e tsamaisoang ka nako e le 'ngoe ho hokahanya 380V ea mekhahlelo e meraro ea AC hajoale (phapang ea mekhahlelo ea likhato tse 120).Ka lebaka la hore rotor le stator e potolohang matla a khoheli ea motlakase oa mekhahlelo e meraro ea asynchronous e potoloha ka tsela e le 'ngoe le ka lebelo le fapaneng, ho na le sekhahla sa ho thella, kahoo se bitsoa motlakase oa mekhahlelo e meraro.
Lebelo la rotor ea karolo e meraro ea asynchronous motor e tlase ho feta lebelo la matla a khoheli a potolohang.Maqhubu a rotor a hlahisa matla a motlakase le a hona joale ka lebaka la ho sisinyeha ho amanang le matla a khoheli, 'me a sebelisana le matla a khoheli ho hlahisa torque ea motlakase, ho fihlela phetoho ea matla.
Ha ho bapisoa le karolo e le 'ngoe ea asynchronousmakoloi, mekhahlelo e meraro ea asynchronousmakoloie na le ts'ebetso e ntle ea ts'ebetso mme e ka boloka lisebelisoa tse fapaneng.
Ho latela meaho e fapaneng ea rotor, li-motor tse tharo tsa asynchronous li ka aroloa ka mofuta oa cage le mofuta oa maqeba.
Enjene ea asynchronous e nang le cage rotor e na le sebopeho se bonolo, ts'ebetso e tšepahalang, boima bo bobebe, le theko e tlase, e sebelisitsoeng haholo.Bothata ba eona bo ka sehloohong ke bothata ba ho laola lebelo.
Rotor le stator ea leqeba la mekhahlelo e meraro ea asynchronous motor le tsona li na le li-winding tse tharo-mohato le ho hokahanngoa le rheostat e ka ntle ka mehele e thellang, borashe.Ho fetola khanyetso ea rheostat ho ka ntlafatsa ts'ebetso ea ho qala ea koloi le ho fetola lebelo la koloi.
Molao-motheo o sebetsang oa motlakase oa asynchronous oa mekhahlelo e meraro
Ha symmetrical mekhahlelo e meraro alternating current e sebelisoa ho stator ea mekhahlelo e meraro, ho hlahisoa matla a khoheli a potolohang a pota-potileng sebaka se ka hare sa chitja sa stator le rotor ka lebelo la synchronous n1.
Kaha matla a khoheli a potolohang a potoloha ka lebelo la n1, mokhanni oa rotor o eme qalong, kahoo mokhanni oa rotor o tla khaola stator e potolohang matla a khoheli ho hlahisa matla a electromotive a susumelitsoeng (tataiso ea matla a motlakase a susumetsoang ke motlakase e khethoa ke Letsoho le letona. puso).
Ka lebaka la potoloho e khutšoanyane ea mokhanni oa rotor lipheletsong tse peli ka lesale le lekhutšoanyane la potoloho, tlas'a ketso ea matla a motlakase a susumelitsoeng ke motlakase, mokhanni oa rotor o tla hlahisa motlakase o entsoeng ka tsela e ts'oanang le matla a electromotive a susumelitsoeng.Mokhanni oa hona joale oa rotor o tlas'a matla a motlakase sebakeng sa stator magnetic field (tataiso ea matla e ikemiselitse ho sebelisa molao oa letsoho le letšehali).Matla a motlakase a hlahisa torque ea motlakase holim'a shaft ea rotor, e tsamaisang rotor hore e potolohe ka lehlakoreng la matla a khoheli a potolohang.
Ka tlhahlobo e kaholimo, ho ka fihleloa qeto ea hore molao-motheo oa ts'ebetso ea mochini oa motlakase o tjena: ha mehato e meraro ea stator windings ea enjene (e 'ngoe le e' ngoe e na le phapang ea angle ea motlakase ea 120 degree) e feptjoa ka mekhahlelo e meraro ea symmetrical alternating current. , ho hlahisoa matla a khoheli a pota-potileng, a fokotsang maqhubu a rotor mme a hlahisa hona joale ka har'a maqhubu a rotor (ho potoloha ha rotor ke potoloho e koetsoeng).Mokhanni oa hona joale oa rotor o tla hlahisa matla a motlakase tlas'a ts'ebetso ea stator e potolohang matla a khoheli, Ka hona, torque ea motlakase e thehoa holim'a shaft ea motlakase, e khanna koloi ho potoloha ka tsela e ts'oanang le matla a khoheli a potolohang.
Setšoantšo sa mohala oa motlakase oa mekhahlelo e meraro ea asynchronous
Wiring ea mantlha ea li-motor tsa mekhahlelo e meraro ea asynchronous:
Lithapo tse ts'eletseng tse tsoang ho matsoelintsoeke a motlakase oa mekhahlelo e meraro li ka aroloa ka mekhoa e 'meli ea mantlha ea khokahano: khokahano ea delta delta le khokahano ea linaleli.
Lithapo tse tšeletseng = li-motor windings tse tharo = lihlooho tse tharo li qetella + lipheletsong tse tharo tsa mehatla, tse nang le multimeter e lekanyang kamano pakeng tsa hlooho le mohatla oa mapheo a tšoanang, ke hore U1-U2, V1-V2, W1-W2.
1. Triangle delta kgokelo ya mokhoa bakeng sa likarolo tse tharo asynchronous Motors
Mokgwa wa kgokelo ya kgutlotharo delta ke ho hokela dihlooho le mehatla ya mapheo a mararo ka tatelano ho etsa kgutlotharo, jwaloka ha ho bontshitswe setshwantshong:
2. Mokhoa oa ho hokahanya ha linaleli bakeng sa li-motor tse tharo tsa asynchronous motors
Mokhoa oa ho hokahanya ha linaleli ke ho hokahanya mohatla kapa lipheletsong tsa hlooho tsa mapheo a mararo, 'me likhoele tse ling tse tharo li sebelisoa e le likhokahano tsa matla.Mokhoa oa ho hokahanya joalo ka ha o bonts'itsoe setšoantšong:
Tlhaloso ea Setšoantšo sa Wiring sa Three Phase Asynchronous Motor ka Figures le Text
Lebokose la mateano a motlakase a mekhahlelo e meraro
Ha motlakase oa asynchronous oa mekhahlelo e meraro o hokahane, mokhoa oa ho hokahanya oa sekhechana se hokelang ka lebokoseng la mateano o tjena:
Ha enjene ea mekhahlelo e meraro ea asynchronous e hokahane, mokhoa oa khokahano oa sekhechana sa khokahano ea lebokose la junction o tjena:
Ho na le mekhoa e 'meli ea ho hokahanya bakeng sa li-motor tse tharo tsa asynchronous: khokahano ea linaleli le khokahano ea kgutlotharo.
Mokhoa oa triangulation
Likhoeleng tse tsoelipanang tse nang le motlakase o tšoanang le bophara ba terata, mokhoa oa khokahanyo ea naleli o na le makhetlo a mararo a fokolang ho potoloha mohato ka mong (makhetlo a 1.732) le matla a fokolang ka makhetlo a mararo ho feta mokhoa oa khokahanyo ea khutlotharo.Mokhoa oa ho hokahanya oa enjene e phethiloeng o lokiselitsoe ho mamella voltage ea 380V mme ka kakaretso ha e ea lokela ho fetoloa.
Mokhoa oa ho hokahanya o ka fetoloa feela ha boemo ba motlakase oa mekhahlelo e meraro bo fapane le bo tloaelehileng ba 380V.Ka mohlala, ha boemo ba motlakase oa mekhahlelo e meraro e le 220V, ho ka sebetsa ho fetola mokhoa oa ho hokahanya ha linaleli oa motlakase oa mekhahlelo e meraro oa 380V ho ea ho mokhoa oa ho hokahanya khutlotharo;Ha boemo ba motlakase oa mekhahlelo e meraro e le 660V, mokhoa oa pele oa motlakase oa mekhahlelo e meraro oa 380V delta o ka fetoloa mokhoa oa ho hokahanya ha linaleli, 'me matla a oona a lula a sa fetohe.Ka kakaretso, li-motor tse nang le matla a tlase li hokahane le linaleli, ha li-motor tse matla haholo li hokahane le delta.
Ka voltage e lekantsoeng, mochini o hokahantsoeng oa delta o lokela ho sebelisoa.Haeba e fetotsoe ho enjene e hokahaneng ea linaleli, ke ea ts'ebetso e fokotsehileng ea motlakase, e bakang ho fokotseha ha matla a motlakase le ho qala hona joale.Ha u qala motlakase o matla haholo (mokhoa oa ho kopanya delta), hona joale o phahame haholo.E le ho fokotsa tšusumetso ea hona joale ea ho qala moleng, ho qala ho theoha ho tloaelehile ho amoheloa.Mokhoa o mong ke oa ho fetola mokhoa oa mantlha oa khokahanyo ea delta hore e be mokhoa oa khokahanyo ea linaleli bakeng sa ho qala.Ka mor'a hore mokhoa oa ho hokahanya naleli o qaliloe, o khutlisetsoa mokhoeng oa khokahanyo ea delta bakeng sa ts'ebetso.
Setšoantšo sa mohala oa motlakase oa mekhahlelo e meraro ea asynchronous
Setšoantšo sa 'mele sa mehala ea phetisetso e eang pele le ea morao bakeng sa li-motor tsa mekhahlelo e meraro:
Ho fihlella taolo ea enjene pele le ho khutlisetsa morao, mekhahlelo efe kapa efe e 'meli ea phepelo ea eona ea matla e ka fetoloa ho latela e ngoe (re e bitsa commutation).Hangata, karolo ea V e lula e sa fetohe, 'me karolo ea U le W e fetoloa ho latela e mong.E le ho etsa bonnete ba hore tatellano ea karolo ea motlakase e ka fapanyetsanoa ka botšepehi ha li-contactor tse peli li sebetsa, mohala o lokela ho lumellana le boema-kepe bo ka holimo ba ho kopana, 'me mohato o lokela ho lokisoa boema-kepeng bo ka tlaase ba contactor.Ka lebaka la ho fapanyetsana ha tatellano ea mekhahlelo ea mekhahlelo e 'meli, hoa hlokahala ho etsa bonnete ba hore li-coil tse peli tsa KM li ke ke tsa tsamaisoa ka nako e le' ngoe, ho seng joalo ho ka etsahala hore ho be le mefokolo e tebileng ea potoloho e khutšoanyane.Ka hona, ho kopanya ho tlameha ho amoheloa.
Bakeng sa mabaka a ts'ireletso, potoloho ea bobeli e thibelang pele le ea ho khutlisetsa morao ka konopo ea konopo (mechine) le ho kopanya li-contactor (motlakase) hangata ho sebelisoa;Ka ho sebelisa konopo ea ho koala, le haeba likonopo tse ka pele le tse ka morao li hatelloa ka nako e le 'ngoe, li-contact tse peli tse sebelisetsoang ho fetola mohato li ke ke tsa sebelisoa ka nako e le' ngoe, ka mokhoa o ts'oanelang ho qoba mekhahlelo e khutšoanyane ea mekhahlelo.
Ho phaella moo, ka lebaka la ho hokahanngoa ha li-contactors tse sebelisitsoeng, hafeela e 'ngoe ea li-contact e ntse e sebelisoa, nako e telele e koetsoeng e ke ke ea koala.Ka tsela ena, ts'ebelisong ea li-interlocking tse peli tsa mochini le tsa motlakase, sistimi ea phepelo ea motlakase ea enjene e ke ke ea ba le lipotoloho tse khutšoane tsa mohato ho isa mohatong, ho sireletsa koloi ka nepo le ho qoba likotsi tse bakiloeng ke lipotoloho tse khutšoane tsa phaseto nakong ea modulation ea mohato, e ka chesa mokopanyi.
Nako ea poso: Aug-07-2023
