ALTERNATING-POLE VERNIER PERMANENT MAGNET MACHINE

The present invention belongs to the technical field of electrical machines, and particularly relates to an alternating-pole vernier permanent magnet machine. The alternating-pole vernier permanent magnet machine includes a stator and a rotor arranged outside the stator. An air gap is formed between the stator and the rotor; the stator includes a stator iron core and a stator winding arranged on the stator iron core; the stator iron core includes stator teeth and a stator yoke, and the stator teeth and the stator yoke form a stator slot for accommodating the stator winding; a rotor iron core includes rotor teeth and a rotor yoke, and the rotor teeth and magnetic pole units are alternately distributed in a circumferential direction to form an alternating pole structure. According to the present invention, under a condition that torque density is basically unchanged or improved, a use amount of permanent magnets in a vernier permanent magnet machine can be reduced, so as to effectively reduce cost of the vernier permanent magnet machine, and besides, a moderate power factor is obtained, thereby facilitating application of a large vernier permanent magnet machine.