Matoorada aan is-raacin ee saddex-waji ahwaa waxa aynu inta badan u naqaan AC motors
Shuruuda wareegitaanka matoorada saddex-waji ah ee asynchronous waa in la helo goob magnet ah oo wareegeysa. Dabaylaha istator-ka ee matoorada asynchronous ee saddex-waji ah ayaa loo isticmaalaa in lagu dhaliyo goobo birlab ah oo wareegta. Sida aynu wada ognahay, danabyada weji-ilaa-weji ee u dhexeeya wejiyadu waxay ku kala duwan yihiin 120 digrii, iyo jihooyinka boosaska ee saddexda dabaysha ee stator ee matoor saddex-waji ah oo aan caadi ahayn waxay sidoo kale ku kala duwan yihiin 120 darajo. Sidan oo kale, marka dabaylaha stator-ku dhaafo, marka sahayda saddexda weji ee korontada la shido, dabaylaha stator-ku waxa uu abuuraa goob magnet ah oo wareegta.
Goobta birlababka ah ee wareegta waxay ku wareegtaa hal mar meel bannaan marka wakhtigan xaadirka ah uu wareego hal mar. Si kale haddii loo dhigo, xawaaraha wareega ee meerka birlabeedka wareegta ayaa la mid ah isbeddelka hadda. Xawaaraha wareega ee goob magnetic wareegta waa sida soo socota. n=60f/P Halkan, f waa inta jeer ee korontada, P waa tirada lammaane tiirka ee goobta magnetic, iyo unugga n waa tirada wareegyada daqiiqadii. Marka loo eego qaaciddada, xawaaraha matoorku wuxuu la xiriiraa inta jeer ee tirarka birta ah iyo inta jeer ee sahayda korontada.
Dabaysha hal wejimatoor aan asynkronous saddex waji ahwaa 1, rotor-kuna waa qaab sedan. Marka qulqulka sinusoidal-ka-hal-waji ah uu dhex maro dabaylaha istator-ka, matoorku waxa uu abuuraa goob magnetic AC. Xoogagga iyo jihada goobta magnetic-kan ayaa si sinusoid ahaan isbeddelaya waqti ka dib, laakiin sababtoo ah waxay ku go'an tahay meel bannaan, goobtan magnetic waxaa sidoo kale loo yaqaannaa goob magnet ah oo is-dhexgal ah. Goobtan birlababka ah ee garaaca is dhexgalka leh waxa loo kala qaybin karaa laba goobood oo birlabeed ah oo wareegta oo leh xawaare isku mid ah iyo jihooyin wareeg oo iska soo horjeeda. Marka uu rotor-ku taagan yahay, labadan goobood ee magnet-ka ah ee wareegaya waxay dhaliyaan laba wareeg oo rotor-ka ah, kuwaas oo kala fidsan oo ka soo horjeeda jihada, markaa wareeggu waa 0 marka la sameeyo, markaa matoorku ma wareegi karo.
Marka xoog dibadda ah loo isticmaalo in lagu beddelo3-waji induction ac motorjihada gaarka ah (wareejinta saacada, iwm), dhaqdhaqaaqa goynta magnetic field ee u dhexeeya goobta magnetic wareega iyo wareegga magnetic ee jihada saacadu waxay noqotaa mid yar. Dhaqdhaqaaqa xadhkaha birlabeedka xoogga ayaa goynaya inta u dhaxaysa goobta magnetic-wareega ah iyo goobta magnetic-wareega ee saacada ka soo horjeeda ayaa noqda mid weyn. Sidan oo kale, dheelitirku wuu dumaa, wadarta guud ee korantada korantada ee uu dhaliyo rotor ma noqon doonto eber, rotor-kuna wuxuu u wareegayaa jihada kicinta.