DC hluav taws xob rub thiab AC lub cev muaj zog rub tau yug los hauv xyoo pua 19th, uas muaj keeb kwm ntau dua 100 xyoo thiab tau dhau los ua lub ntsiab tsav tsheb ntawm lub tshuab fais fab. Vim yog cov teeb meem kev lag luam nyob rau lub sijhawm ntawd, rau lub sijhawm ntev, lub luag haujlwm uas xav tau kev tswj ceev yog qhov pib ntawm DC lub cev muaj zog.
Cov kev tsis zoo hauv qab no ntawm DC motors yog vim muaj cov txheej txheem:
1. Vim yog lub commutation spark ntawm DC lub cev muaj zog, nws yog ib qho nyuaj rau siv lub inverter mus rau qhov hnyav ib puag ncig uas muaj nplaim taws thiab tawg gases;
2. Nws yog ib qho tsim nyog los hloov cov txhuam hniav thiab cov commutators tsis tu ncua, uas yog qhov nyuaj rau kev tswj thiab muaj lub neej luv luv;
3. Cov qauv yog complex, thiab nws yog ib qho nyuaj rau tsim DC motors nrog loj muaj peev xwm, kev kub ceev thiab high voltage.
Piv nrog DC motors, AC motors muaj qhov zoo hauv qab no:
1. Tsis muaj hluav taws xob sib txuas, uas tuaj yeem siv rau qhov hnyav ib puag ncig uas muaj cov pa taws kub hnyiab thiab hluav taws kub;
2. Nws yog ib qho yooj yim los tsim AC motors nrog lub peev xwm loj, kev kub ceev thiab siab voltage;
3. Cov qauv tsim, txhim khu kev qha, ua haujlwm yooj yim.
Vim li no, kev nce qib thiab kev siv ntawm AC high-speed systems yog txwv. Tom qab qhov teeb meem roj thib ob hauv nruab nrab-70s ntawm lub xyoo pua 20th thiab kev txhim kho ntawm cov tshuab hluav taws xob, lub tshuab inverter ntawm AC high-speed system tau tsim los ntawm kev kub ceev.
