Permanent magnet assisted synchronous reluctance motor for increasing minimum electromagnetic torque

A permanent magnet assisted synchronous reluctance motor for increasing minimum electromagnetic torque, comprising a stator and a rotor;

• said stator comprises a stator iron core and windings;
• wherein,
• the rotor comprises a rotor iron core and permanent magnets;
• in a radial direction of the rotor, each magnetic pole of the rotor iron core is provided with multiple layers of arc-shaped permanent magnet grooves;
• a q-axis magnetic flux path is formed between two neighboring magnetic poles or between each two neighboring inner and outer layers of adjacent permanent magnet grooves;
• the permanent magnets are disposed in the permanent magnet grooves;
• two neighboring magnetic poles of the rotor are respectively a first magnetic pole and a second magnetic pole, the first and second magnetic poles have opposite polarities;
• an outer endpoint of a permanent magnet arranged in the first magnetic pole is a first outer endpoint, said first outer endpoint is farther from the q-axis;
• an outer endpoint of a permanent magnet arranged in the second magnetic pole is a second outer endpoint, said second outer endpoint is farther from the q-axis;
• an included angle A between the first outer endpoint and the second outer endpoint with respect to a center of the rotor is less than an electrical angle of 80 degrees;
• wherein number of stator slots is N;
• number of pairs of rotor poles is P;
• number of rotor poles is 2P, wherein 2P is 2 multiplied by P;
• number of phases of windings is m;
• and number of stator slots per pole per phase (N/2P/m) is an integer;
• one endpoint of the q-axis magnetic flux path directly faces a center of a stator tooth, and another endpoint of the q-axis magnetic flux path directly faces a center of a slot opening of one of the stator slots, and the slot opening is provided in a radial direction of the stator slot.