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synchronous motor
Sign in to saveAlso known as permanent-magnet synchronous AC electric motor
motor with rotation synchronized to the supply current frequency
~20 min read
Encyclopedic overview
Miniature synchronous motor used in analog clocks. The rotor is made of a permanent magnet. Small synchronous motor with integral stepdown gear from a microwave oven
A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current. Synchronous motors use permanent magnets or electromagnets for rotors, and electromagnets for stators. The stator creates a magnetic field that rotates in time with the oscillations of the current. The rotor turns in step with the stator field at the same rate and as a result, provides a second synchronized rotating magnet field.
Excerpted from Wikipedia’s “synchronous motor” article, available under the CC BY-SA 4.0 licence.