An AC servo motor is a two-phase induction motor. This motor has a stator and rotor, like a usual induction motor. The stator of this servo motor consists of laminate. This stator has two windings that are 90 degrees apart. This phase change results in a rotating magnetic field.

The aluminum bars in the rotor of this motor are fixed in slots and short-circuited through end rings, making it a cage-type rotor. Minimizing the air gap ensures optimal flux connection. Generally, a drag cup is used where the inertia of the rotating system decreases. As a result, this helps to lower power consumption.