A 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, belonging 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; There are a plurality of first and second teeth that are evenly distributed alternately; the first teeth are wound with coils that generate a first magnetic field when energized; the outer stator is provided with a plurality of third and fourth teeth that are evenly distributed alternately; A coil is wound around the teeth to generate a third magnetic field when energized; the direction of the third magnetic field is opposite to that of the first magnetic field; in the inner stator, the permanent magnet is used to generate the second magnetic field, and the direction of the second magnetic field is the same as that of the first magnetic field to establish an internal Air-gap magnetic field; in the outer stator, a permanent magnet is used to generate a fourth magnetic field, and the direction of the fourth magnetic field is the same as that of the third magnetic field to establish an outer air-gap magnetic field. The invention utilizes the space inside the motor to generate torque, and the coil is wound on the large teeth of the stator, the coil ends are very short, there is no overlap between phases, and the winding utilization rate is high.

Description

technical field [0001] The invention belongs to the field of motors, and more particularly, 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 are of double salient pole structure, and the rotor has no winding, which has the advantages of simple structure, low cost, high reliability, strong fault tolerance, and wide range of constant power speed regulation. 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 block rotor structure or added permanent magnets to assist to form a hybrid excitation reluctance motor. [0003] The current international research on the switch reluctance motor with full-pitch winding and block rotor, because of the stator windin...

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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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