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A Stator Homopolar Hybrid Permanent Magnet Memory Motor

A hybrid permanent magnet and memory motor technology, applied in synchronous machines, synchronous machine parts, electromechanical devices, etc., can solve the problems of difficult implementation of the excitation current control system, increasing the complexity of electromagnetic characteristics, and easy mutual coupling, etc. Achieve the effect of easy heat dissipation and cooling, high space utilization, and widening operating range

Active Publication Date: 2021-03-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The stator permanent magnet hybrid excitation motor realizes the adjustability of the air gap magnetic field, improves the permanent magnet utilization rate and power density, and reduces the cogging torque. However, this motor has two magnetic potential sources at the same time. The magnetic flux is easy to couple and influence each other, which increases the complexity of the electromagnetic characteristics, and has weaknesses such as large excitation loss and difficulty in implementing the excitation current control system.

Method used

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  • A Stator Homopolar Hybrid Permanent Magnet Memory Motor
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  • A Stator Homopolar Hybrid Permanent Magnet Memory Motor

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Embodiment 1

[0031] The technical scheme of the present invention is as follows: a stator homopolar hybrid permanent magnet memory motor, comprising a stator 1, a rotor 2 and a motor shaft 7, the stator 1 is arranged outside the rotor 2, the motor shaft 7 is located in the rotor 2, and the rotor 2 includes rotor teeth 21 and rotor core 22, the stator 1 includes an outer stator yoke 11, a middle stator core 12 and an inner stator tooth 13, and several Alnico permanent magnets 4, several Alnico permanent magnets 4 are distributed along the radial direction of the stator 1, and each Alnico permanent magnet 4 is wound with a charge and demagnetization winding 3; the stator teeth 13 are located at the Between the magnetic winding 3 and the rotor 2, two parallel NdFeB permanent magnets 5 are arranged in the stator teeth 13, one end of the NdFeB permanent magnet 5 faces the rotor 2, and the other end faces the charging and demagnetizing winding 3 and AlNiCo In the area between the permanent magne...

Embodiment 2

[0035] The technical scheme of the present invention is as follows: a stator homopolar hybrid permanent magnet memory motor, comprising a stator 1, a rotor 2 and a motor shaft 7, the stator 1 is arranged outside the rotor 2, the motor shaft 7 is located in the rotor 2, and the rotor 2 includes rotor teeth 21 and rotor core 22, the stator 1 includes an outer stator yoke 11, a middle stator core 12 and an inner stator tooth 13, and several Alnico permanent magnets 4, several Alnico permanent magnets 4 are distributed along the radial direction of the stator 1, and each Alnico permanent magnet 4 is wound with a charge and demagnetization winding 3; the stator teeth 13 are located at the Between the magnetic winding 3 and the rotor 2, wherein the number of charging and demagnetizing windings 3 is twice the number of stator teeth 13, every other charging and demagnetizing winding 3 is provided with a stator tooth 13, and two stator teeth 13 are arranged inside Parallel NdFeB perman...

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Abstract

The invention discloses a stator homopolar hybrid permanent magnet memory motor, which comprises an armature winding, a stator, a charging and demagnetizing winding, a rotor and a rotating shaft. The stator includes stator yoke, stator iron core, stator teeth, AlNiCo, NdFeB and iron core poles; radially magnetized AlNiCo and iron core poles are embedded between the stator yoke and stator iron core, and tangentially magnetized neodymium The iron-boron permanent magnets are embedded on the stator teeth, and the mixed permanent magnets on the same stator pole are distributed in an "n" type concentrating magnetic distribution, and the polarities are all "SNS" distribution; the armature windings are set on the stator, and the The magnetic windings are wound on AlNiCo permanent magnets; the salient-pole rotor includes a rotor core and rotor teeth. When the magnetization is increased, the AlNiCo and the NdFeB permanent magnets form a concentrating effect to provide the main magnetic flux of the air gap; while in the weak magnetic operation, the NdFeB magnetic potential will be short-circuited by the AlNiCo inside the stator core. The invention improves the power density of the motor by setting the magnetization type of the stator homopolar hybrid permanent magnet, and applies a pulse current to adjust the AlNiCo magnetization state and direction, so as to realize the efficient regulation of the no-load air gap magnetic field of the motor.

Description

technical field [0001] The invention relates to an adjustable magnetic flux permanent magnet memory motor technology, which belongs to the technical field of adjustable magnetic flux permanent magnet motors. Background technique [0002] Due to the inherent characteristics of the rare earth permanent magnet materials (such as NdFeB) used in traditional permanent magnet synchronous motors (PMSM), the air gap magnetic field of the motor is difficult to change, and the speed regulation range is very limited during electric operation. Therefore, it is used in electric vehicles, aerospace The application of equal-width speed-regulating direct drive occasions is subject to certain restrictions. The adjustable flux permanent magnet motor with the goal of effectively adjusting the air gap magnetic field of the permanent magnet motor has always been a hot and difficult point in the field of motor research. The memory motor is a new type of flux-controllable permanent magnet motor. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/44H02K21/04
CPCH02K21/04H02K21/44
Inventor 阳辉秦岭房淑华林鹤云
Owner SOUTHEAST UNIV
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