Halbach-like magnetic pole array structural body for rotating motor

A technology of rotating electrical machines and structures, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, electrical components, etc., can solve the problems of increasing the difficulty of motor installation, large secondary mass of motor, and reducing motor torque density, etc., to achieve Large output torque, improved torque density, and the effect of simplifying the difficulty of magnetization

Inactive Publication Date: 2021-11-05
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will lead to a large secondary mass of the motor, reduce the torque density of the motor, and increase the difficulty of installing the motor

Method used

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  • Halbach-like magnetic pole array structural body for rotating motor
  • Halbach-like magnetic pole array structural body for rotating motor
  • Halbach-like magnetic pole array structural body for rotating motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 The rotating electric machine that the isosceles triangle magnet and the parallelogram magnet combine

[0049] see figure 1 , Figure 1A , Figure 1B , Figure 1C , Figure 1D , figure 2 with image 3 As shown, Embodiment 1 is a Halbach-like magnetic pole array structure composed of four sets of magnetic structures that are concentric, that is, the number of pole pairs of the magnetic ring is four. Each group of magnetic structures is assembled according to the magnetic circuit sequence of the magnetization angle: magnetization oblique 45 degrees - parallelogram magnet, outer ring 90 degrees magnetization - parallelogram magnet, magnetization oblique 135 degrees - parallelogram magnet, Clockwise isosceles triangle magnet, 225 degrees magnetization oblique - parallelogram magnet, inner ring 270 magnetization - parallelogram magnet, magnetization 315 degrees oblique direction - parallelogram magnet, counterclockwise isosceles triangle magnet.

[005...

Embodiment 2

[0062] Embodiment 2 The rotating electric machine that the right triangle magnet and the parallelogram magnet combine

[0063] The difference between Embodiment 2 and Embodiment 1 is that one isosceles triangle magnet arranged on the outer ring surface 9A of the structure is divided into two right triangle magnets. see Figure 5 , Figure 5A , Figure 5B shown.

[0064] The first group of magnetic structures are assembled according to the magnetic circuit sequence of the magnetization angle: A magnetization oblique 45 degrees - parallelogram magnet 3A, A outer ring 90 degree magnetization - parallelogram magnet 4A, A magnetization oblique 135 degrees - Parallelogram magnet 5A, AA clockwise right-angle triangle magnet 11A 1, AB clockwise right-angle triangle magnet 11A2, A magnetization obliquely 225 degrees - Parallelogram magnet 6A, A inner ring 270 magnetization - Parallelogram magnet 7A, A charge Magnetic oblique direction 315 degrees - parallelogram magnet 8A, AA cou...

Embodiment 3

[0069] Embodiment 3 The rotating electric machine with the combination of isosceles trapezoidal magnet and parallelogram magnet

[0070] see Figure 6 , Figure 6A , Figure 6B As shown, embodiment 3 is a Halbach-like magnetic pole array structure formed by two sets of magnetic structures conjoining circles, that is, the number of pole pairs of the magnetic ring is 2. Each group of magnetic structures is assembled according to the magnetic circuit sequence of the magnetization angle: 45 degree magnetization oblique - parallelogram magnet, 90 degree magnetization of the outer ring - isosceles trapezoidal magnet, 135 degree magnetization oblique - parallelogram magnet , Clockwise isosceles trapezoidal magnet, magnetization oblique 225 degrees - parallelogram magnet, inner ring 270 magnetization - isosceles trapezoidal magnet, magnetization oblique 315 degrees - parallelogram magnet, counterclockwise isosceles trapezoidal magnet.

[0071] The magnetic pole layout is along the ...

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Abstract

The invention discloses a Halbach-like magnetic pole array structural body for a rotating motor. The Halbach-like magnetic pole array structural body is composed of magnets with triangular cross sections and a magnet with a parallelogram cross section. The triangular magnet and the parallelogram-shaped magnet are combined, and the magnets with different magnetizing directions are assembled to construct structural bodies with different configurations, so a strong magnetic field above a magnetic pole array can be generated. The cross section is in a parallelogram shape, inclined magnetizing is adopted, magnetic poles are arranged in the clockwise direction, and magnets are distributed at intervals of 45 degrees in the magnetizing direction. The structural body is advantaged in that special magnetic steel arrangement and magnetization direction arrangement are designed, under the condition that the size of the permanent magnet is not increased, the advantage that leakage flux of one side of the Halbach array is small is better played, use of back iron can be avoided, the cost is reduced, meanwhile, the high-performance requirement is met, secondary mass of a permanent magnet motor is reduced, torque density is improved, and the method can be used in the high-precision motor driving field.

Description

technical field [0001] The present invention relates to a rotating electrical machine, more particularly, to a Halbach-like magnetic pole array structure for a rotating electrical machine. Background technique [0002] People's daily life is inseparable from motors. Motor technology is very mature. How to further improve the performance of motors is a problem that must be faced in the development of modern science and technology. With its strong magnetic field on one side and weak magnetic field on the other side, the Halbach array is used to make a small number of magnets produce a stronger magnetic field in a permanent magnet motor, and at the same time produce a magnetic shielding effect outside the motor. [0003] The permanent magnet assisted synchronous reluctance motor is changed by inserting permanent magnets in the rotor slot of the synchronous reluctance motor. Its structure includes stator core, stator winding, rotor core and permanent magnet. By adding a perman...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02K1/27
CPCH02K1/274H02K2213/03
Inventor孙启昕严亮
OwnerBEIHANG UNIV