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Axial flux motor applying soft magnetic powder core with high saturation induction density

A technology of magnetic induction and axial flux, applied in the field of motors, to achieve high output power and low eddy current loss

Active Publication Date: 2016-03-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the stator and rotor core of the transverse flux motor with the traditional C-type topology that it is difficult to take into account the high magnetic permeability and low loss. Easy to manufacture

Method used

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  • Axial flux motor applying soft magnetic powder core with high saturation induction density
  • Axial flux motor applying soft magnetic powder core with high saturation induction density
  • Axial flux motor applying soft magnetic powder core with high saturation induction density

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Soft magnetic powder cores with high saturation magnetic induction are used in high-power iron cores, which in turn are used in high-power axial flux motors.

[0043] The iron core is composed of several fan-shaped iron core monomers distributed along the circumference, such as figure 1 As shown, the side of the fan-shaped iron core unit 1 is flat-wound with the coil 2, and the fan-shaped iron core unit 1 is made of a 1k101 high saturation magnetic induction intensity amorphous nanocrystalline soft magnetic powder core.

[0044]In this embodiment, the fan-shaped iron core unit 1 is long and fan-shaped, so that the motor can obtain more pole pairs. In addition, the rounded corners at both ends are tangent to the fan-shaped side, so as to facilitate winding and mold opening Press processing. If necessary, the two fan-shaped straight sides can also present a certain large arc, so as to be more suitable for winding winding. In addition, this embodiment adopts the method of...

Embodiment 2

[0046] Use 1k101 amorphous nanocrystalline soft magnetic powder cores with high saturation magnetic induction for high-power iron cores, such as figure 2 As shown, the iron core is composed of a planar ring gear 3 and a coil 2 wound on the planar ring gear. The coil 2 is made according to the shape of the upper teeth of the planar ring gear and then inserted into the planar ring gear. The planar ring gear is 1k101 high It is made of amorphous nanocrystalline soft magnetic powder core with saturation magnetic induction.

[0047] Such as image 3 As shown, the planar ring gear 3 is a single-sided ring gear, such as Figure 4 As shown, the planar ring gear 3 is a double-sided ring gear. For a double-sided ring gear, the teeth on both sides can be aligned or staggered. For small presses that cannot produce larger plane ring gears, the plane gear rings can be divided into smaller parts for forming and processing.

Embodiment 3

[0049] Such as Figure 5 As shown, the composite permanent magnet is composed of a permanent magnet layer 4 and an amorphous nanocrystalline soft magnetic powder core layer 5 with a high saturation magnetic induction of 1k101 in layers overlapping, and there are at least two layers. The attachment method can be through magnetic attraction, and adhesive bonding can be used if necessary. In this embodiment, the permanent magnet has the characteristics of high remanence (minimum about 1.3T), and is preferably a rare earth permanent magnet. And the thickness ratio of the permanent magnet layer to the soft magnetic powder core layer with high saturation magnetic induction is preferably 2:1.

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Abstract

The invention relates to an axial flux motor applying soft magnetic powder core with high saturation induction density, specifically, the soft magnetic powder core with the high saturation induction density is applied to a composite permanent magnet and / or an iron core. Compared with the prior art, when the soft magnetic powder core with the high saturation induction density is applied to the composite permanent magnet or the high-power iron core, a higher excitation magnetic field can be used under the same iron core material so as to excite stronger excitation flux density of a stator due to the high saturation induction density; and the maximum excitation flux density is obviously higher than that of the conventional amorphous iron core and the relatively new iron-coreless stator according to theoretical calculations and tests. Therefore, the motor is higher in the output power.

Description

technical field [0001] The invention relates to a motor, in particular to an axial flux motor using a soft magnetic powder core with high saturation magnetic induction. Background technique [0002] It is generally believed that in low-speed high-torque propulsion motors, the torque density of transverse flux permanent magnet motors can reach 3-6 times that of conventional motors. There is no electromagnetic coupling relationship between the phases of the transverse flux permanent magnet motor, and each phase can be powered independently, which means that even if a phase fails, it can be cut off without affecting other phases to continue to operate with reduced power. The reliability of the electric propulsion system is greatly improved. However, the common C-type topology transverse flux motor stator and rotor core is generally made of soft iron through machining or pressed by powder soft magnetic composite material SMC. The magnetic properties of these two materials are w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/02
Inventor 严彪严鹏飞
Owner TONGJI UNIV
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