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Staggered continuous pole permanent magnet synchronous linear motor

A permanent magnet synchronous linear, interlaced and continuous technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of expensive rare earth permanent magnets, increased motor costs, etc., to facilitate installation and fixing, optimize thrust performance, reduce The effect of dosage

Inactive Publication Date: 2017-08-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an interleaved continuous pole permanent magnet synchronous linear motor, which solves the problem that the cost of the existing permanent magnet synchronous linear motor increases due to the high price of rare earth permanent magnets, and improves the utilization rate and The economical availability of motors

Method used

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  • Staggered continuous pole permanent magnet synchronous linear motor
  • Staggered continuous pole permanent magnet synchronous linear motor
  • Staggered continuous pole permanent magnet synchronous linear motor

Examples

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the interleaved continuous pole permanent magnet synchronous linear motor of the present invention includes primary, secondary and air gap. The primary is composed of a multi-tooth primary iron core 1-1 and a primary armature winding 2-1, every other primary iron core is wound with a primary armature winding, and the primary iron cores at both ends are not wound. The secondary is composed of a secondary back yoke core 3, a permanent magnet-iron pole array and a magnetic isolation material 5, and there is an air gap of 0.5 mm between the primary and secondary. In the permanent magnet-iron pole array, the permanent magnets 4-1, 4-2 and iron poles 3-1 are alternately arranged, and are divided into two groups of equal length along the transverse direction, and a magnetic isolation material 5 is arranged in the middle of the two groups, and the polarity of one group is according to N-iron poles-N are arranged alternately, and the other set of pola...

Embodiment 2

[0029] Such as Figure 5 As shown, the primary structure of Embodiment 2 is exactly the same as that of Embodiment 1, the difference is that the secondary permanent magnet-iron pole array of Embodiment 2 is expanded into multiple groups of combinations, that is, expanded from 2 groups to 3 groups, 4 groups, and 5 groups , ..., N groups of combinations, wherein the permanent magnet-iron pole arrays of the odd groups are all arranged in the same arrangement as the first group, and the permanent magnet-iron pole arrays of the even groups are all arranged in the same arrangement as the second group. The combination of multiple groups is suitable for large-thrust linear motors, which helps to reduce process difficulty, reduce material costs and improve thrust performance.

Embodiment 3

[0031] Such as Figure 6 As shown, the primary structure of the third embodiment is exactly the same as that of the first embodiment, the difference is that the two sides of the secondary side of the third embodiment can be formed by two primary structures with the same groove structure, and the upper primary is composed of a multi-tooth primary iron core 1-1 Composed of primary armature winding 2-1, the lower primary is composed of multi-tooth primary iron core 1-2 and primary armature winding 2-2, the upper and lower secondary primary are staggered by a certain distance, and the staggered tooth structure is used to effectively weaken the Positioning power. The upper and lower surfaces of the secondary back yoke iron core are provided with permanent magnet-iron pole arrays with opposite polarities.

[0032] Such as Figure 7 Shown is the interleaved permanent magnet array in the bilateral interleaved continuous pole permanent magnet synchronous linear motor. Such as Figu...

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Abstract

The invention discloses a continuous staggered pole permanent magnet synchronous linear motor which comprises a primary, a secondary and an air gap formed between the primary and the secondary. The primary comprises multi-tooth primary iron cores and primary armature windings. The secondary comprises a secondary back yoke iron core, a permanent magnet-iron pole array, and a magnetic isolation material. The permanent magnet-iron pole array is arranged at the upper surface of the secondary back yoke iron core and is laterally divided into two groups with a same length, each group of iron pole and secondary back yoke iron core are integratedly formed, and a magnetic isolation material is arranged between the two groups. The polarities of one group are alternately arranged according to a sequence of N-iron pole-N, the polarities of the other group are alternately arranged according to a sequence of iron pole-S-iron pole, permanent magnets used by the two groups have opposite polarities and are arranged in staggered way, the distance between adjacent secondary permanent magnets is 2tau, and an array is formed according to a cycle of 2tau. Compared with a conventional permanent magnet synchronous linear motor, the continuous staggered pole permanent magnet synchronous linear motor has the advantages of less permanent magnets, a high utilization ratio of the permanent magnets, good thrust performance, high economy and practicability and can be applied in industrial occasions with low speed movement.

Description

technical field [0001] The invention relates to an interlaced continuous pole permanent magnet synchronous linear motor and belongs to the technical field of permanent magnet synchronous linear motors. Background technique [0002] The linear motor eliminates the intermediate conversion mechanism, directly converts electrical energy into mechanical energy of linear motion, and directly generates thrust. It has outstanding advantages such as large stroke, high precision, and high speed, and has become the preferred motor type for direct drive linear servo systems. With the development and application of rare earth permanent magnet materials, permanent magnet synchronous linear motors have smaller volume and mass than electromagnetic motors. Due to a series of advantages such as small size, light weight, high efficiency and energy saving, the application field of permanent magnet synchronous linear motor is gradually expanding to various fields of production and life. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K41/031H02K2213/03
Inventor 李静黄旭珍谭强钱振宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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