The invention discloses a three-phase
doubly salient motor with non-uniform
stator pole width distribution. The three-phase
doubly salient motor comprises a
stator iron core, a rotor iron core, an excitation element, an armature winding and a rotating shaft, and is characterized in that the rotor iron core is arranged inside the
stator iron core, the rotating shaft is arranged inside the rotor iron core, the excitation element is arranged at the yoke part of the stator iron core, the armature winding is wound on the stator pole of the stator iron core, a rotor pole is arranged on the rotor iron core, the pole width of the stator pole is unevenly distributed, the pole width of the rotor pole is evenly distributed, the maximum pole width dmax of the stator pole is equal to the pole width of the rotor pole, the minimum pole width dmin is two thirds of the pole width of the rotor pole, the rotor iron core and the stator iron core are both of a salient pole structure, the number of the rotor poles is 4N, the pole-arc coefficient of the rotor is 0.5, the number of the
stator poles is 6N, and N is a positive integer. According to the invention, approximate sine of the induction
electromotive force of the armature winding of the
doubly salient motor is realized, so that the doubly salient motor can adopt
sine wave power supply, the
torque ripple of the doubly salient motor is reduced, and the iron core loss of the motor is reduced.