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Low-thrust ripple long primary permanent magnet synchronous linear motor

A permanent magnet synchronous linear, low-thrust technology, applied to electrical components, electromechanical devices, propulsion systems, etc., can solve problems such as large thrust fluctuations, and achieve the effect of reducing the impact

Inactive Publication Date: 2018-08-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of large thrust fluctuations of the existing long primary and short secondary permanent magnet synchronous linear motors, the present invention proposes a modular short secondary permanent magnet synchronous linear motor

Method used

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  • Low-thrust ripple long primary permanent magnet synchronous linear motor
  • Low-thrust ripple long primary permanent magnet synchronous linear motor
  • Low-thrust ripple long primary permanent magnet synchronous linear motor

Examples

Experimental program
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Effect test

Embodiment approach 1

[0016] Such as figure 1 As shown, the low-thrust fluctuation long-primary permanent magnet synchronous linear motor adopts a 9-slot and 12-pole structure, including primary components and secondary components. The primary assembly acts as a stator and consists of a primary iron core (1) and an armature winding (2). The longitudinal length of the primary assembly is much greater than that of the secondary assembly. A primary iron core (1) made of laminated silicon steel sheets is slotted, and the iron core (1) is divided into a tooth portion (1-1) and a yoke portion (1-2) after the slotting. The primary iron core (1) has 18 slots in total, and the armature winding (2) is arranged in the slot. The armature winding (2) adopts a double-layer centralized type, and the coils are connected in the order of A-X-B-Y-C-Z.

[0017] The secondary assembly is used as a mover, which is composed of a permanent magnet (4) and a secondary iron core (3). The permanent magnet (4) is magnetized a...

Embodiment approach 2

[0020] The difference between this embodiment and Embodiment 1 is: as image 3 As shown, the permanent magnet (4) of the motor adopts an embedded structure, the permanent magnet (4) is magnetized along the longitudinal direction, and is distributed alternately with the secondary iron core (3). The width of the magnetic isolation region (5) in the middle of the secondary iron core is smaller than the width of the pitch of the permanent magnets (4).

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Abstract

The invention provides a low-thrust ripple long primary permanent magnet synchronous linear motor, and belongs to the technical field of motors. The motor includes a primary assembly and a secondary assembly. The primary assembly is used as a stator and is composed of a primary iron core and armature windings. The longitudinal length of the primary assembly is much greater than that of the secondary assembly. Grooves are formed in the primary iron core, and the armature windings are arranged inside the grooves. The secondary assembly is used as a mover and is composed of permanent magnets anda secondary iron core. A magnetic isolation region is arranged in the middle of the secondary iron core. The distance between the permanent magnets is not affected by the magnetic isolation region. There is an air gap between the primary assembly and the secondary assembly. The structure is beneficial for suppressing the end effect and cogging effect of the motor and reducing the thrust ripple inthe long primary permanent magnet synchronous linear motor.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a low-thrust fluctuation long-primary permanent magnet synchronous linear motor. Background technique [0002] The characteristic of linear motor transmission technology is to save the intermediate complex transmission structure. The characteristics of permanent magnet motor are high power density, small size and light weight. Permanent magnet synchronous linear motor has the advantages of both, and its application field is gradually expanding. Linear motors can be either short primary and long secondary or long primary and short secondary. Compared with the short primary and long secondary type, the secondary (mover) of the long primary short secondary type motor has light weight and small positioning force, and is suitable for high-speed and high-precision applications. However, the linear motor in the form of long primary and short secondary still has end effect, which leads to the incr...

Claims

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Application Information

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IPC IPC(8): H02K41/03
CPCH02K41/031
Inventor 谭强李立毅王明义黄旭珍
Owner HARBIN INST OF TECH
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