Permanent magnet reluctance motor with double-stator non-uniform tooth structure

Abstract

The invention discloses a permanent magnet reluctance motor with a double-stator non-uniform tooth structure, and belongs to the field of motors. The permanent magnet reluctance motor comprises a rotating shaft, an inner stator, a rotor, an outer stator and a plurality of permanent magnets. The inner stator is provided with a plurality of first teeth and second teeth which are alternately and uniformly distributed; coils are wound on the first teeth to generate a first magnetic field when electrified; the outer stator is provided with a plurality of third teeth and fourth teeth which are alternately and uniformly distributed; coils are wound on the third teeth to generate a third magnetic field when electrified; the third magnetic field is opposite to the first magnetic field; in the inner stator, a permanent magnet is used for generating a second magnetic field, and the direction of the second magnetic field is the same as that of the first magnetic field to establish an inner air-gap magnetic field; and in the outer stator, a permanent magnet is used for generating a fourth magnetic field, and the fourth magnetic field and the third magnetic field are identical in direction to establish an outer air-gap magnetic field. The internal space of the motor is utilized to generate torque, the coils are wound on the large teeth of the stator, the ends of the coils are very short, all phases are not overlapped, and the winding utilization rate is high.

Description

technical field [0001] The invention belongs to the field of motors, and more specifically relates to a permanent magnet reluctance motor with a double-stator non-uniform tooth structure. Background technique [0002] The stator and rotor of the switched reluctance motor have a double-salient pole structure, and the rotor has no windings. It has the advantages of simple structure, low cost, high reliability, strong fault tolerance, and wide constant power speed regulation range. However, the power density of switched reluctance motors is not as good as that of conventional permanent magnet motors. In order to improve the performance of the motor and obtain higher torque performance and power density, people have proposed a segmented rotor structure or added permanent magnets to assist the formation of a hybrid excitation reluctance motor. [0003] At present, the whole-pitch winding block rotor switched reluctance motor researched in the world adopts the stator winding with...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a permanent magnet reluctance motor with a double-stator non-uniform tooth structure. The purpose is to effectively improve the efficiency and power density of the motor while avoiding long winding ends, Problems such as low stator space utilization

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