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An Axial Field Stator Yokeless Flux Inversion Permanent Magnet Motor

A magnetic field stator and permanent magnet motor technology, applied in synchronous machines, electromechanical devices, electrical components, etc., can solve the problems of large magnetic flux leakage and large torque ripple of permanent magnets, achieve high torque density and reduce motor magnetic flux leakage , The effect of lightweight permanent magnet utilization

Active Publication Date: 2021-10-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this motor also has many disadvantages, such as large flux leakage of permanent magnets, large torque ripple, etc.

Method used

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  • An Axial Field Stator Yokeless Flux Inversion Permanent Magnet Motor
  • An Axial Field Stator Yokeless Flux Inversion Permanent Magnet Motor

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] An axial field stator yokeless flux-inverted permanent magnet motor structure, such as figure 1 and 2 As shown, it includes two symmetrically arranged rotors 1 and a stator 2 placed in the middle of the two rotors 1, forming a sandwich structure. Both the rotor 1 and the stator 2 are annular structures and the rotor 1 and the stator 2 are connected coaxially to form a two-layer plane. air gap.

[0025] The rotor 1 includes a rotating shaft and a rotor core...

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Abstract

The invention relates to the field of motor design, in particular to an axial magnetic field stator yokeless flux reversal permanent magnet motor, which includes two symmetrically arranged rotors and a stator placed between the two rotors, both of which are annular structures And the rotor and the stator are coaxially connected to form two plane air gaps. The rotor includes a rotating shaft and a rotor core with circumferential grooves on the side wall. The stator includes a first stator core, a second stator core, and an armature winding. The first stator core and the second stator core are arranged alternately and equidistantly in the circumferential direction. A stator groove is formed at the center of the tooth crowns on both sides of the first stator core, a first permanent magnet is embedded in the stator groove, and a second permanent magnet is attached to the surface of the second stator core axially on both sides. The invention adopts the yokeless structure of the double-rotor single-stator stator, supplemented by the special structure of the large and small stator cores, which reduces the magnetic flux leakage of the motor and improves the torque characteristics of the motor, so that the motor has high torque density, light weight and high Characteristics of permanent magnet utilization.

Description

technical field [0001] The invention relates to the field of motor design, in particular to an axial magnetic field stator yokeless flux reversal permanent magnet motor. Background technique [0002] Stator permanent magnet motors place permanent magnets in the stator, and the rotor structure is similar to switched reluctance motors. It has the characteristics of simple structure, strong robustness, and easy manufacturing. Moreover, the heat generated by the permanent magnet can be directly transmitted to the casing through the stator core, which is beneficial to the heat dissipation of the stator. Flux reversal permanent magnet (FRPM) motor is a kind of stator permanent magnet motor, and its structure is similar to the traditional rotor surface-mounted permanent magnet motor, and the permanent magnets are surface-mounted. However, this motor also has many disadvantages, such as large flux leakage of permanent magnets, large torque ripple and so on. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/02H02K1/17H02K21/44
Inventor 林明耀贾伦林克曼乐伟屠逸翔
Owner SOUTHEAST UNIV
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