The latest achievements in high-energy permanent magnet materials, strong magnetic materials, and power electronics technology have greatly promoted the application fields of permanent magnet motors, such as robots, aerospace, electric tools, generators, new energy, various medical equipment, and electric or hybrid vehicles... etc. Permanent magnet motors are everywhere, and without exception, they demonstrate the fact that permanent magnet motors have many advantages over traditional motors such as brushed commutation DC motors, synchronous motors, and induction (asynchronous) motors.

(1) The copper loss of the rotor is zero, resulting in higher natural efficiency;

(2) High driving torque and output power per unit volume make compact design solutions possible;

(3) Eliminating slip rings, phase converters, carbon brushes, etc. simplifies motor structure and maintenance;

(4) The air gap magnetic flux density is relatively high compared to traditional motors, resulting in better dynamic performance;

(5) Can operate at high power factor;

(6) A simple six phase switching voltage source can achieve precise torque, speed, and position control.