Raws li cov qauv thiab kev ua haujlwm tau muab faib ua: DC tsav, asynchronous motor, synchronous engine.
1 lub tshuab synchronous muaj peev xwm muab faib ua: Cov ntawv npliag magnet synchronous motor, reluctance synchronous lub cev thiab hysteresis synchronous lub cev.
2 asynchronous lub cev tau muab faib ua: kev siv pa taws thiab AC commutator lub cev muaj zog.
Induction motors yuav muab faib ua peb theem asynchronous tsav, ib-theem asynchronous lub cev thiab shaded ncej induction lub cev.
AC commutator lub cev muaj peev xwm muab faib ua: ib-theem series excitation lub cev muaj zog, AC-DC siv cav thiab thawb-thiab-scold lub cev.