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Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles

A permanent magnet synchronous linear and asymmetric technology, applied in electrical components, electromechanical devices, electric components, etc., to achieve the effects of positioning force and thrust fluctuation suppression, easy batch and automated production, and good thrust characteristics

Active Publication Date: 2020-06-02
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the average value of the electromagnetic thrust is greatly reduced when the inclined pole or the wrong pole method is used to suppress the thrust fluctuation in the bilateral permanent magnet linear synchronous motor, and a kind of bilateral asymmetric V-shaped magnetic pole is proposed. The permanent magnet linear synchronous motor is designed to use the effect of V-shaped magnetic poles and bilateral misalignment to reduce the thrust fluctuation of the motor while ensuring that the electromagnetic thrust will not drop sharply, so as to achieve good thrust characteristics

Method used

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  • Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles
  • Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles
  • Permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles

Examples

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Embodiment 1

[0029] Embodiment 1: as figure 1 As shown, a permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles is composed of a secondary, a primary armature, and an air gap between the primary armature and the secondary; the bilateral secondary is located on both sides, and the primary motor pivot in the middle;

[0030] The setting secondary is composed of a flat yoke plate 1 and bilateral magnetic poles 2 arranged in parallel, and the polarity of each side of the bilateral magnetic poles 2 is N and S arranged alternately. Each side of the double-sided magnetic pole 2 is composed of multiple permanent magnets to form a V-shaped structure, and the magnetization direction of each permanent magnet of each side of the V-shaped magnetic pole is the same, and is perpendicular to the plane of the flat yoke plate.

[0031] The two-sided magnetic pole 2 is set to be mirror-symmetrical in spatial position, and the inclination directions of the permanent mag...

Embodiment 2

[0038] Embodiment 2: as image 3 As shown, the difference from Embodiment 1 is that in each V-shaped magnetic pole, the inclination angles of the first segment of the parallelogram permanent magnet 5 and the second segment of the permanent magnet 6 are not equal, α 1 ≠α 3 , α 2 ≠α 4 , the value range of each angle is the same as Embodiment 1; the length of the hypotenuse of the first segment permanent magnet 5 and the second segment permanent magnet 6 of the V-shaped magnetic pole is unequal L 1 ≠ L 3 , L 2 ≠ L 4 , the side length in the width direction still satisfies L 5 = L 6 .

Embodiment 3

[0039] Embodiment 3: as Figure 4As shown, the difference from Embodiment 1 is that each V-shaped magnetic pole is composed of three permanent magnets, and the magnetization direction of each permanent magnet is the same, but the inclination angle is different. The permanent magnet 7 in the middle section has no inclination angle, and the inclination angles of the first permanent magnet 5 and the second permanent magnet 6 need to satisfy: α 1 = α 3 = α 2 = α 4 . The side lengths of the first permanent magnet 5 and the second permanent magnet 6 satisfy L 1 = L 2 = L 3 = L 4 , L 6 = L 7 .

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Abstract

The invention discloses a permanent magnet synchronous linear motor with bilateral asymmetric V-shaped magnetic poles. A flat-plate-shaped secondary pole of the motor is composed of a yoke plate and bilateral magnetic poles, wherein each magnetic pole is in a V shape formed by a plurality of sections of permanent magnets, the inclination directions of V-shaped magnetic pole sections located at mirror symmetry positions are different, that is, the directions of V openings are different, a bilateral asymmetric state is formed, and the inclination angles and the side lengths of the V-shaped magnetic pole sections located at the mirror symmetry positions are equal; a primary armature is composed of an iron core and windings, wherein the current directions of the bilateral windings at mirror symmetry positions are opposite, and the primary armature and bilateral magnetic poles form a series magnetic circuit and interact to generate same-direction electromagnetic thrust. According to the invention, the asymmetric V-shaped skewed poles have multiple combination forms, so it is guaranteed that electromagnetic thrust does not drop drastically while thrust fluctuation of the motor is reduced, and good thrust characteristics are achieved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a permanent magnet synchronous linear motor with bilateral asymmetrical V-shaped magnetic poles. Background technique [0002] Compared with the single-sided flat linear motor, the double-sided linear motor has a higher thrust density, and has attracted widespread attention in the fields of automated transportation lines, processing lines, and electromagnetic emissions. The electromagnetic force fluctuation problem of permanent magnet linear synchronous motor has always been the bottleneck of its extended application, and the suppression of the electromagnetic force fluctuation of the motor has become a hot spot in the research of this type of motor. The method of using tilted permanent magnets is easy to implement and becomes one of the most effective and widely used methods, such as Figure 7a shown. However, after the permanent magnet has a certain inclination angle, not only the harmon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K41/031
Inventor 马明娜陶伟徐正阳胡琦张旭
Owner HEFEI UNIV OF TECH
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