Multi-tooth magnetic flux switching permanent magnetic memory motor

Abstract

The invention discloses a multi-tooth magnetic flux switching permanent magnetic memory motor comprising a casing, and a stator, a rotor (2) and a non-magnetic conduction rotating shaft (8) which are contained in the casing; the stator (1) is arranged outside the rotor (2); the rotor (2) is fixedly arranged on the non-magnetic conduction rotating shaft (8), and is of a salient pole type; the stator comprises a stator iron core (1), permanent magnetic bodies (3), a three-phase armature winding (4) and pulse windings (5); the stator iron core (1) comprises a plurality of stator yokes and stator poles which are protruded from the stator yokes to the center of the stator iron core; the three-phase armature winding (4) is wound on the stator poles; the permanent magnetic bodies (3) are embedded in the stator poles; cavities (6) are arranged between the permanent magnetic bodies (3) and the non-magnetic conduction rotating shaft (8); the pulse windings (5) are arranged in the cavities (6); and magnetic conduction bridges (7) are arranged between the pulse windings (5) and the casing. According to the multi-tooth magnetic flux switching permanent magnetic memory motor, the weak magnetic capability of the rotating speed operation scope of the motor are improved, and the air gap flux density of the motor is improved.

Description

technical field [0001] The invention relates to an adjustable magnetic flux permanent magnet motor, in particular to a novel magnetic flux switching permanent magnet memory motor, which can improve the magnetic field weakening capability of the motor, is suitable for wide speed regulation operation occasions, and belongs to the technical field of motor manufacturing. Background technique [0002] In the field of motors, due to the inherent characteristics of ordinary permanent magnet materials (such as NdFeB), the air gap magnetic field in the motor is basically kept constant, and the range of speed regulation is very limited when operating as an electric motor. The application of wide-speed adjustable direct drive applications such as electric vehicles and aerospace is limited to a certain extent. Therefore, the adjustable flux permanent magnet motor aimed at realizing the effective adjustment of the air gap magnetic field of the permanent magnet motor has always been a hot ...

AI Technical Summary

Problems solved by technology

However, this kind of motor has two magnetic potential sources at the same time, and the magnetic fluxes of the two are easy to couple and influence each other, which increases the complexity of electromagnetic characteristics, and has weaknesses such as increased excitation loss and difficulty in implementing the excitation current control system.

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