Ib theem peb-theem asynchronous electric tsav nrog squirrel-cage rotor tau tsim rov qab rau xyoo 1889, thaum Lub Peb Hlis 8, los ntawm tus kws tshawb fawb Lavxias nto moo thiab tus kws tshaj lij Mikhail Osipovich Dolivo-Dobrovolsky. Thiab tsuas yog ib xyoos tom qab, thaum Lub Kaum Ob Hlis 15, 1890, theem rotor lub cev muaj zog tau tsim thiab patented.
Peb-theem asynchronous electric motor yog ib qho ntawm cov khoom siv hluav taws xob ntau tshaj plaws hauv kev lag luam. Nws yog ib qho yooj yim siv, txhim khu kev qha thiab muaj tus nqi qis. Lub tshuab hluav taws xob asynchronous yog cuaj caum feem pua ntawm tag nrho cov motors thoob ntiaj teb. Nws tuaj yeem pom yuav luag txhua qhov chaw - los ntawm kev tsim lub tshuab ntxhua khaub ncaws zoo tib yam mus rau cov chaw ua haujlwm loj loj, tsis hais txog cov nroj tsuag hluav taws xob. Nws tau ua ib qho kev hloov kho thev naus laus zis hauv ntiaj teb kev lag luam.
Asynchronous lub cev muaj zog yog lub tshuab uas tsim los hloov hluav taws xob hluav taws xob rau hauv lub tshuab hluav taws xob. "Asynchronous" tsuas yog txhais tau tias "tsis yog tib lub sijhawm". Qhov no txhais tau hais tias rau lub tshuab zoo li no, qhov zaus uas cov hlau nplaum tsim los ntawm stator rotates yuav ib txwm muaj ntau dua qhov zaus uas qhov txav ntawm lub cav tig - lub rotor.
Ib lub tshuab hluav taws xob asynchronous muaj ib qho ruaj khov - lub stator, thiab ib qho txav txav - lub rotor.
Lub stator yog sib sau los ntawm cov ntawv xovxwm hluav taws xob thiab feem ntau yog cylindrical. Lub stator winding ua los ntawm cov hlau winding yog muab tso rau hauv cov grooves tshwj xeeb ntawm cov tub ntxhais. Lub stator muaj ob peb windings. Cov axes ntawm cov windings no feem ntau yog hloov ntawm lub kaum sab xis ntawm 120 degrees txheeb ze rau ib leeg. Qhov kawg ntawm cov windings no tuaj yeem txuas rau hauv lub hnub qub lossis lub delta (nyob ntawm seb qhov voltage siv li cas).
Cov rotors ntawm lub tshuab xws li lub cev muaj zog asynchronous yog luv luv thiab theem.
Thawj hom (squirrel-cage rotor) yog cov tub ntxhais uas ua los ntawm tooj liab lossis txhuas rods nrog winding nteg rau hauv lawv. Cov rods txuas nrog kawg rings, thiab lawv cov tsos zoo li ib tug squirrel tawb. Los ntawm txoj kev, yog vim li cas hom rotor no feem ntau hu ua "squirrel tawb". Lub rotor nyob rau hauv cov ntaub ntawv no yog rov sib sau los ntawm cov nplooj ntawv ntawm hluav taws xob hlau, nias thiab ntim nrog txhuas.
Theem rotor feem ntau hu ua lub nplhaib ntiv nplhaib rotor. Nws muaj peb-theem winding, uas qhov tseeb tsis txawv ntawm tag nrho cov stator windings. Yeej, qhov kawg ntawm windings ntawm xws li ib tug rotor nrog kev sib cuagrings (theem) txuas nrog hauv lub hnub qub. Qhov kawg pub dawb yog coj mus rau cov hlua khi no. Ib qho ntxiv resistor feem ntau ntxiv rau lub voj voog winding vim muaj cov txhuam tshwj xeeb txuas nrog lub nplhaib. Xws li ib tug resistor tsub kom lub active tiv thaiv nyob rau hauv lub hluav taws xob Circuit Court ntawm lub rotor, uas ua rau ib tug smoother pib thiab ib tug txo nyob rau hauv cov nqi ntawm cov pib tam sim no - qhov no tseem ceeb heev rau cov cav tov xws li peb-theem asynchronous motors.
