Umgaqo wokusebenza we-asynchronous motor yezinto ezintathu kufuneka ube:
Xa i-symmetrical ye-alternating current ye-alternating current igqithiselwa kwi-stator-term winding ye-stator, i-field magnetic ejikelezayo iyenziwa ejikeleza i-clockwise ecaleni kwendawo yangaphakathi yesetyhula ye-stator kunye ne-rotor kwi-synchronous speed n1.Ekubeni intsimi yamagnetic ejikelezayo ijikeleza ngesantya se-n1, umqhubi we-rotor umile ekuqaleni, ngoko umqhubi we-rotor uya kunqumla i-stator ejikelezayo intsimi yamagnetic kwaye enze i-electromotive force induced (isalathiso samandla e-electromotive induced sigqitywe ngesandla sokunene. umthetho).Ekubeni zombini iziphelo zomqhubi zifutshane-zijikelezwe yi-short-circuit ring, phantsi kwesenzo sokunyanzeliswa kwe-electromotive force, i-current induced current iya kuveliswa kumqhubi we-rotor ohambelana ngokusisiseko kunye nolwalathiso lwamandla ombane owenziweyo.Abaqhubi be-rotor abakhoyo ngoku basebenza ngamandla e-electromagnetic kwintsimi yamagnetic ye-stator (ulwalathiso lwamandla lunqunywe ngumthetho wesandla sasekhohlo).Amandla ombane we-electromagnetic avelisa i-torque ye-electromagnetic kwi-rotor shaft, eqhuba i-rotor ukuba ijikeleze kwicala lendawo yamagnetic ejikelezayo.
Ngolu hlalutyo lungentla, kunokugqitywa ukuba umgaqo osebenzayo wemoto yile: xa i-stator windings ezintathu ze-motor (nganye inomahluko wesigaba se-120 degrees kwi-angle yombane) inikezelwa ngemisinga emithathu etshintshanayo, intsimi yamagnetic ejikelezayo. iya kwenziwa.Umsinga owenziweyo uveliswa kwi-winding (i-rotor winding yindlela evaliweyo).I-rotor conductor yangoku iya kuvelisa amandla e-electromagnetic phantsi kwesenzo semagnethi ejikelezayo ye-stator, ngaloo ndlela yenze i-torque ye-electromagnetic kwi-motor shaft, ukuqhuba i-motor ukujikeleza, kunye nomzila wokujikeleza we-motor uhambelana nentsimi yamagnetic ejikelezayo.Indlela efanayo.
Izizathu: 1. Ukuba enye okanye ezimbini i-motor phase windings itshiswa ngaphandle (okanye i-overheated), idla ngokubangelwa yinkqubo yokulahleka kwesigaba.Akusayi kubakho lucazululo olunzulu lwethiyori apha, kuphela ingcaciso emfutshane.Xa i-motor ilahlekelwa yisigaba ngenxa yaso nasiphi na isizathu, nangona i-motor isenokuqhubeka iqhuba, isantya siyehla kwaye isiliphu siba sikhulu.Izigaba ze-B kunye ne-C ziba luchungechunge lobudlelwane kwaye zidityaniswe ngokuhambelana nesigaba A.Xa umthwalo uhlala ungatshintshi, Ukuba i-current yesigaba A inkulu kakhulu, ukuba iqhube ixesha elide, ukuvuthwa kwesi sigaba kuya kudlula ngokugqithiseleyo kwaye kutshise.Emva kokuba isigaba samandla silahlekile, i-motor isenokuqhubeka nokusebenza, kodwa isantya sibuye sehla kakhulu, isiliphu siba sikhulu, kwaye isantya semagnethi sokusika umqhubi siyenyuka.Ngeli xesha, i-B-phase winding ivuliwe-ijikelezwe, kwaye i-A kunye ne-C yesigaba se-windings iba kwi-series kwaye idlule Ukusebenza ngokugqithisileyo kunye nexesha elide kuya kubangela ukuba i-windings yezigaba ezimbini zitshise ngexesha elifanayo. bonisa apha ukuba ukuba imoto emileyo ayinayo inqanaba lobonelelo lwamandla kwaye ilayitiwe, iyakwenza kuphela isandi esingxolayo kwaye ayikwazi ukuqala.Oku kungenxa yokuba i-symmetrical yesigaba sesithathu esitshintshanayo sangoku esinikezelweyo kwi-motor siya kuvelisa indawo ejikelezayo yemagnethi kumbindi we-stator.Nangona kunjalo, xa elinye inqanaba lonikezelo lwamandla lilahlekile, inqanaba elinye le-pulsating magnetic field iveliswa kwi-stator core, engenakubangela ukuba i-motor ivelise i-torque yokuqala.Ke ngoko, i-motor ayikwazi ukuqala xa inqanaba lonikezelo lwamandla lingekho.Nangona kunjalo, ngexesha lokusebenza, i-elliptical ejikelezayo intsimi yamagnetic enezigaba ezithathu ze-harmonic eziphezulu zenziwa kwi-gap yomoya we-motor.Ke ngoko, i-motor esebenzayo isenokuthi iqhube emva kokulahleka kwesigaba, kodwa indawo yamagnetic igqwethiwe kwaye icandelo eliyingozi langoku liyanda kakhulu., ekugqibeleni ibangele ukuba i-winding ivuthe.
Imilinganiselo ehambelanayo yokuchasana: Kungakhathaliseki ukuba i-motor imile okanye iguquguqukayo, umonakalo othe ngqo obangelwa yinkqubo yelahleko yesigaba kukuba inqanaba elinye okanye ezibini ze-motor ziya kutshisa okanye zitshise.Kwangaxeshanye, ukusebenza ngokugqithisileyo kweentambo zamandla kukhawulezisa ukuguga kwe-insulation.Ngokukodwa kwimeko emileyo, ukunqongophala kwesigaba kuya kuvelisa i-rotor etshixiweyo yangoku amaxesha amaninzi ireyithingi yangoku kwi-motor winding.Isantya sokutshisa sihamba ngokukhawuleza kwaye sibi kakhulu kunokulahleka kwesigaba ngequbuliso ngexesha lokusebenza.Ke ngoko, xa sisenza ugcino lwemihla ngemihla kunye nokuhlolwa kwemoto, kufuneka siqhube uhlolo olubanzi kunye novavanyo lweyunithi esebenzayo ye-MCC yemoto.Ngokukodwa, ukuthembeka kokutshintsha komthwalo, imigca yamandla, kunye noqhagamshelwano olusisigxina kunye noluguquguqukayo kufuneka lujongwe ngononophelo.Ukuthintela ukusebenza kwelahleko yesigaba.
Ixesha lokuposa: Dec-04-2023
