Ngokuthandwa kombane ohamba rhoqo oguquguqukayo, ingxaki yokuqala yeemoto iye yaba lula ukuyisombulula, kodwa kwizixhobo zombane eziqhelekileyo, ukuqalai-rotor yekheji ye-squirrelIimoto ezingasebenziyo rhoqo bezisoloko ziyingxaki. Ukusuka kuhlalutyo lokusebenza kokuqala nokusebenza kweemoto ezingasebenziyo, kunokubonwa ukuba ukuze kwandiswe i-torque yokuqala kwaye kuncitshiswe umbane ngexesha lokuqalisa, kufuneka ukuba kubekho ukumelana ne-rotor enkulu; ngelixa xa imoto isebenza, ukuze kuncitshiswe ukulahleka kobhedu lwe-rotor kwaye kuphuculwe ukusebenza kakuhle kwemoto, kufuneka ukuba kubekho ukumelana ne-rotor encinci; oku ngokucacileyo kuyaphikisana.
Kwiimoto ze-wound rotor, ekubeni i-resistor inokudityaniswa ngochungechunge ngexesha lokuqalisa ize isuswe ngexesha lokusebenza, le mfuneko iyafezekiswa. Nangona kunjalo, i-wound rotor asynchronous motor inesakhiwo esintsonkothileyo, iindleko eziphezulu, kunye nokugcinwa okungahambi kakuhle, okuthintela ukusetyenziswa kwayo ukuya kwinqanaba elithile; oku kukhuthaza abantu ukuba baqale kwimo ye-rotor slot yekheyiji ye-squirrel.imoto engangqamaniyokwaye uzame ukusebenzisa "isiphumo sesikhumba" ukufezekisa injongo yokumelana okukhulu kokuqala kunye nokuxhathisa okuncinci ngexesha lokusebenza. Iimoto ze-rotor ze-deep slot kunye ne-double squirrel cage zinolu hlobo lokusebenza kokuqala. Namhlanje, masithethe ngeemoto ze-deep slot rotor.
Injini engenazintlu ezinzulu
Ukuze kuphuculwe isiphumo sesikhumba, imilo yesloti ye-deep slot asynchronous motor rotor inzulu kwaye incinci, kwaye umlinganiselo wobunzulu besloti ukuya kububanzi besloti ukwisithuba se-10-12. Xa umbane udlula kwiibha zerotor, i-leaking flux edibene nezantsi kweebhari inkulu kakhulu kune-leaking flux edibene ne-sloti. Ke ngoko, ukuba iibhari zithathwa njengenani lee-conductors ezincinci ezahlulwe kubude besloti ezidityaniswe ngaxeshanye, ii-conductors ezincinci ezikufutshane nezantsi kwesloti zine-leaking reactance enkulu, kwaye okukhona ikufutshane ne-sloti, kokukhona i-leaking reactance incinci.
Ekuqaleni, ekubeni i-rotor current frequency iphezulu kwaye i-leak reactance inkulu, ukusasazwa kwe-current kwi-conductor nganye encinci kuya kuxhomekeka kwi-leak reactance enkulu. Okukhona i-leak reactance inkulu, kokukhona i-leak current incinci. Ngale ndlela, phantsi kwesenzo se-potential efanayo ebangelwa yi-magnetic flux ephambili ye-air gap, i-current density kufutshane nezantsi kwe-slot kwi-bars iya kuba ncinci kakhulu, kwaye okukhona ikufutshane nokuvulwa kwe-slot, kokukhona i-current density inkulu.
Ngenxa yempembelelo yesikhumba, emva kokuba uninzi lwamandla ombane lucinezelwe kwinxalenye ephezulu yebha yomqhubi, indima yebha yomqhubi esezantsi kwesithuba incinci kakhulu, nto leyo elingana nokunciphisa ukuphakama kunye necandelo elinqamlezileyo lebha yomqhubi, ngoko ke ukumelana kwerotor kuyanda, kwaye kuyahlangabezana neemfuno zokuxhathisa okukhulu ekuqaleni. Xa i-motor iqaliswa kwaye i-motor isebenza ngokuqhelekileyo, ngenxa yesantya esiphantsi samandla ombane ojikelezayo, ukusabela kokuvuza kwe-rotor winding kuncinci kakhulu kunokumelana kwe-rotor, ngoko ke ukusasazwa kwamandla ombane kwii-conductors ezincinci ezikhankanyiweyo apha ngasentla kuya kuxhomekeka kakhulu kukumelana.
Ekubeni ukumelana komqhubi ngamnye omncinci kufana, umbane kwibha yomqhubi uya kusasazwa ngokulinganayo, ngoko ke isiphumo sesikhumba siyanyamalala, kwaye ukumelana komqhubi webha yomqhubi werotor kuya kuba mncinci kwakhona, kufutshane nokuxhathisa kweDC. Kuyabonakala ukuba ukusebenza okuqhelekileyo kokuxhathisa kwerotor kuya kuncipha ngokuzenzekelayo, ngaloo ndlela kuhlangatyezwane nesiphumo sokunciphisa ukulahleka kobhedu kunye nokuphucula ukusebenza kakuhle.
Iyintoni impembelelo yesikhumba?
Isiphumo sesikhumba sikwabizwa ngokuba sisiphumo sesikhumba. Xa umsinga otshintshanayo udlula kwi-conductor, umsinga uya kugxila kumphezulu we-conductor. Le meko ibizwa ngokuba sisiphumo sesikhumba. Xa umsinga okanye i-voltage iqhutywa kwi-conductor ngee-electron eziphindaphindayo, iya kuqokelelana kumphezulu we-conductor iyonke endaweni yokuba isasazwe ngokulinganayo kwindawo enqamlezileyo ye-conductor iyonke.
Isiphumo sesikhumba asichaphazeli kuphela ukumelana ne-rotor, kodwa sichaphazela nokusabela kokuvuza kwe-rotor. Ukusuka kwindlela ye-slot leakage flux, kunokubonwa ukuba umbane odlula kwi-conductor encinci uvelisa kuphela ukuvuza okuvela kwi-conductor encinci ukuya kwi-slot, kodwa kungekhona ukusuka kwi-conductor encinci ukuya ezantsi kwe-slot, kuba le yokugqibela ayinanxibelelwano nombane. Ngale ndlela, kumbane ofanayo, okukhona usondela ezantsi kwe-slot, kokukhona ukuvuza okungaphezulu kuveliswa, kwaye okukhona usondela kwi-slot, kokukhona ukuvuza okuncinci kuveliswa. Kunokubonwa ukuba xa isiphumo sesikhumba sicinezela umbane kwi-conductor ukuya kwi-slot, ukuvuza kwe-slot okubangelwa ngumbane ofanayo kuyancitshiswa, ngoko ke ukuphendula kokuvuza kwe-slot kuyancitshiswa. Ke ngoko, isiphumo sesikhumba sonyusa ukumelana kwe-rotor kwaye sinciphise ukuphendula kokuvuza kwe-rotor.
Amandla esiphumo sesikhumba axhomekeke kwimvamisa ye-rotor current kunye nobukhulu be-slot. Okukhona imvamisa iphezulu kwaye i-slot inzulu, kokukhona isiphumo sesikhumba siya kuba sibaluleke ngakumbi. Kwi-rotor efanayo, ukuba imvamisa yahlukile, isiphumo sesikhumba siya kwahluka, kwaye iiparameter ze-rotor nazo ziya kwahluka. Ngenxa yoku, ukumelana ne-rotor kunye nokusabela kokuvuza ngexesha lokusebenza okuqhelekileyo kunye nokuqala kufuneka kwahlulwe ngokungqongqo kwaye akunakubhideka. Kwimvamisa efanayo, isiphumo sesikhumba se-deep groove rotors sinamandla kakhulu, kodwa isiphumo sesikhumba sikwanefuthe elithile kwi-rotors ze-squirrel cage zesakhiwo esiqhelekileyo. Ke ngoko, nokuba kwi-rotor ye-squirrel-cage enesakhiwo esiqhelekileyo, iiparameter ze-rotor ekuqaleni kunye nokusebenza kufuneka zibalwe ngokwahlukeneyo.
Impendulo yokuvuza kwerotor yomjelo onzuluimoto engangqamaniyo, ngenxa yesimo se-groove enzulu ye-rotor, iyancipha ngenxa yesiphumo sesikhumba, kodwa emva kokunciphisa, i-reactance yokuvuza kwe-rotor isenkulu kune-rotor eqhelekileyo ye-squirrel cage. Ke ngoko, amandla kunye ne-torque ephezulu yee-deep groove motors ziphantsi kancinci kunezo zee-squirrel cage motors eziqhelekileyo.
Ixesha leposi: Julayi-05-2024