Umgomo wokusebenza we-asynchronous motor yezinto ezintathu kufanele ube:
Lapho i-symmetrical yamanje eshintshashintshayo yamathemu amathathu idluliselwa ekujikeni kwe-stator yezigaba ezintathu, kukhiqizwa inkambu kazibuthe ezungezayo ezungeza njengokuya kwewashi endaweni engaphakathi eyindilinga ye-stator nerotha ngesivinini esivumelanayo esingu-n1.Njengoba inkambu kazibuthe ejikelezayo ijikeleza ngesivinini se-n1, umqhubi we-rotor umile ekuqaleni, ngakho-ke umqhubi we-rotor uzosika insimu yamagnetic ejikelezayo futhi akhiqize amandla e-electromotive induced (isiqondiso samandla e-electromotive induced kunqunywa isandla sokudla. umthetho).Njengoba zombili iziphetho ze-conductor zifinyezwa yindandatho ye-short-circuit, ngaphansi kwesenzo samandla e-electromotive eyenziwe, i-current induced izokhiqizwa kumqhubi we-rotor ngokuyisisekelo ehambisana nesiqondiso samandla e-electromotive.Amakhondaktha aphethe i-rotor asetshenziswa amandla kazibuthe endaweni kazibuthe ye-stator (isiqondiso samandla sinqunywa umthetho ongakwesokunxele).Amandla kazibuthe kagesi akhiqiza itorque ka-electromagnetic ku-rotor shaft, eshayela i-rotor ukuthi ijikeleze ngasendleleni yamagnetic field.
Ngokuhlaziya okungenhla, kungaphethwa ngokuthi isimiso sokusebenza semoto sithi: lapho ama-stator windings amathathu enjini (ngalinye elinomehluko wesigaba samadigri angu-120 ku-engeli kagesi) lihlinzekwa ngamaza amathathu ashintshanayo, inkambu kazibuthe ezungezayo. izokwenziwa.I-current induced ikhiqizwa ekujikeni (i-rotor winding iyindlela evaliwe).I-rotor conductor ephethe njengamanje izokhiqiza amandla kazibuthe kagesi ngaphansi kwesenzo senkundla kazibuthe ye-stator, ngaleyo ndlela yakhe itorque kagesi ku-motor shaft, ishayela injini ukuthi ijikeleze, futhi indlela yokuzungezisa yemoto ihambisana nenkundla kazibuthe ezungezayo.Isiqondiso esifanayo.
Izizathu: 1. Uma ama-windings wesigaba esisodwa noma ezimbili ze-motor ishiswa (noma ukushisa ngokweqile), ngokuvamile kubangelwa ukusebenza kokulahlekelwa kwesigaba.Ngeke kube nokuhlaziywa kwethiyori okujulile lapha, incazelo emfushane kuphela.Lapho injini ilahlekelwa isigaba nganoma yisiphi isizathu, nakuba injini isengaqhubeka nokugijima, isivinini siyehla futhi ukushelela kuba kukhudlwana.Izigaba B no-C ziba ubudlelwano bochungechunge futhi zixhunywe ngokuhambisana nesigaba A.Uma umthwalo uhlala ungashintshiwe, Uma i-current of phase A inkulu kakhulu, uma ihamba isikhathi eside, ukugoqa kwalesi sigaba kuzoshisa kakhulu futhi kushise.Ngemuva kokulahleka kwesigaba samandla, i-motor isakwazi ukuqhubeka nokusebenza, kodwa isivinini sibuye sehla kakhulu, isiliphu siba sikhulu, futhi izinga lensimu kazibuthe yokusika umqhubi liyakhula.Ngalesi sikhathi, ukujikajika kwesigaba se-B kuvulekile-i-circuited, futhi ama-windings wesigaba A no-C abe uchungechunge futhi adlule Ukusebenza okweqile kwamanje kanye nesikhathi eside kuzokwenza ukuthi ama-windings ezigaba ezimbili ashise ngesikhathi esisodwa. bonisa lapha ukuthi uma injini emile ingenawo isigaba esisodwa samandla futhi ivuliwe, ngokuvamile izokwenza umsindo obhuzayo kuphela futhi ayikwazi ukuqala.Lokhu kungenxa yokuthi i-symmetrical yezigaba ezintathu ezishintshayo zamanje ezinikezwa injini izokhiqiza inkambu yakazibuthe ezungezayo kumongo we-stator.Kodwa-ke, lapho isigaba esisodwa sokuphakelwa kwamandla singekho, inkambu kazibuthe enesigaba esisodwa ikhiqizwa kumongo we-stator, ongakwazi ukwenza ukuthi injini ikhiqize i-torque yokuqala.Ngakho-ke, injini ayikwazi ukuqala lapho isigaba sokunikezwa kwamandla singekho.Kodwa-ke, ngesikhathi sokusebenza, insimu yamagnetic ejikelezayo enezingxenye ezintathu eziphezulu ze-harmonic ikhiqizwa endaweni yomoya yemoto.Ngakho-ke, i-motor egijimayo isengakwazi ukusebenza ngemva kokulahlekelwa kwesigaba, kodwa insimu kazibuthe ihlanekezelwe futhi ingxenye yamanje eyingozi ikhula kakhulu., ekugcineni kubangele ukuvunguza kuphele.
Izinyathelo eziphikisanayo ezihambisanayo: Kungakhathaliseki ukuthi injini imile noma inamandla, ukulimala okuqondile okubangelwa ukusebenza kokulahlekelwa kwesigaba ukuthi amajika esigaba esisodwa noma ezimbili zenjini azoshisa ngokweqile noma ashise.Ngesikhathi esifanayo, ukusebenza kwe-overcurrent yezintambo zamandla kusheshisa ukuguga kwe-insulation.Ikakhulukazi esimweni esimile, ukuntuleka kwesigaba kuzokhiqiza i-rotor yamanje ekhiyiwe izikhathi ezimbalwa zamanje ezilinganiselwe ekujikeni kwemoto.Isivinini sokutubeka esimazombezombe siyashesha futhi sibi kakhulu kunokulahlekelwa kwesigaba okungazelelwe ngesikhathi sokusebenza.Ngakho-ke, lapho senza ukunakekelwa kwansuku zonke kanye nokuhlolwa kwemoto, kufanele senze ukuhlolwa okuphelele nokuhlolwa kweyunithi esebenzayo ye-MCC yenjini.Ikakhulukazi, ukwethembeka kokushintshwa komthwalo, izintambo zikagesi, noxhumana nabo abamile nabaguquguqukayo kufanele kubhekwe ngokucophelela.Vimbela ukusebenza kokulahlekelwa kwesigaba.
Isikhathi sokuthumela: Dec-04-2023
