A multi-tooth permanent magnet embedded flux switching memory motor

Abstract

The invention discloses a multi-tooth type permanent magnet embedded type magnetic flux switching type memory motor, comprising a casing (9), a stator and a rotor (2) accommodated in the casing (9), and a non-magnetically conductive rotating shaft (8). ), which is characterized in that: the stator (1) is arranged outside the rotor (2); the rotor (2) is fixed on the non-magnetic rotating shaft (8) and is of a salient pole type; the stator includes a stator core (1) with one end open, a permanent The magnet (3), the three-phase armature winding (4) and the pulse winding (5); the permanent magnet (3) is arranged between the casing (9) and the stator core (1); the stator core (1) includes a stator yoke ( 1.2) and the sides extending vertically from the stator yoke, the stator core further comprises at least one stator tooth (1.1) arranged inside the stator core (1). The present invention improves the field weakening capability and rotational speed operating range of the motor, and the multi-tooth structure reduces the amount of permanent magnet material and increases the power density of the motor.

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 speed regulation range 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 spo...

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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