Three Phase Synchronous AC Motor

Similar to the BLDC motor, the rotor of a permanent magnet synchronous AC motor consists of permanent magnets. The stator has 3 phase windings distributed sinusiodally as opposed to the salient pole distribution found in a BLDC motor. The stator when energised by a 3 phase alternating current creates a synchronously rotating flux which causes the rotor to rotate synchronously with it. Due to the sinusoidal excitation of the windings the resultant torque generated by this motor is much smoother than that of the BLDC motor. Applications include compressors, pumps, fans, dishwashers, washing machines, servo controls.

See detailed circuit diagrams below and device recommendations.

3 Phase Motor Control