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Flux-switching hybrid permanent magnet memory motor with high power density

A technology of high power density and magnetic flux switching, applied in synchronous machines, electrical components, 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 of magnetic fluxes. Achieve the effect of increasing the constant power speed range, improving power density and torque capacity, and reducing end length

Active Publication Date: 2014-08-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Flux-switching hybrid permanent magnet memory motor with high power density
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  • Flux-switching hybrid permanent magnet memory motor with high power density

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment mode, the patent of the present invention is described in further detail:

[0030] The invention discloses a magnetic flux switching type hybrid permanent magnet memory motor with high power density. The motor includes a stator 1, a rotor 2 and a non-magnetic rotating shaft 9. The stator 1 is arranged outside the rotor 2, and the rotor 2 is fixed on the non-magnetic On the rotating shaft 9, it is a salient pole type.

[0031] The stator includes a stator yoke 1.1, a stator core 1.2 arranged between the stator yoke 1.1 and the rotor, a three-phase armature winding 5 and a pulse winding 6, there is a gap between the stator yoke 1.1 and the nail core 1.2, and two permanent The magnets are jointly excited, that is, the AlNiCo permanent magnet 3 and the NdFeB permanent magnet 4.

[0032] The stator core 1.2 includes a number of stator teeth connected end to end, and there is a gap between adjacent stator teeth. T...

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Abstract

The invention discloses a flux-switching hybrid permanent magnet memory motor with high power density. The motor comprises a stator (1), a rotor (2) and a non-magnetic revolving shaft (9), wherein the stator (1) is arranged outside the rotor (2); the rotor (2) is fixed to the non-magnetic revolving shaft (9), and is of a salient pole form; the stator comprises a stator yoke (1.1), a stator core (1.2) arranged between the stator yoke (1.1) and the rotor, a three-phase armature winding (5) and a pulse winding (6); a gap is formed between the stator yoke (1.1) and the stator core (1.2), and two types of permanent magnets, namely, an aluminum-nickel-cobalt permanent magnet (3) and a neodymium-iron-boron permanent magnet (4), are arranged in the gaps respectively for exciting together. Through the arrangement of the stator hybrid permanent magnets, high power density is realized; moreover, the residual magnetizing strength and magnetizing directions of the permanent magnets are adjusted by applying pulse current, so that efficient adjustment of the no-load gap magnetic field of the motor is realized, and the rotating speed running range is expanded.

Description

technical field [0001] The invention relates to an adjustable magnetic flux permanent magnet motor, in particular to a new type of magnetic flux switching hybrid permanent magnet memory motor, which can improve the power density and torque capacity of the motor, and at the same time ensure a certain weakening magnetic capacity, and is suitable for The wide speed regulation operation occasion 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 o...

Claims

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Application Information

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IPC IPC(8): H02K21/44
Inventor 林鹤云阳辉房淑华黄允凯
Owner SOUTHEAST UNIV
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