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Bilateral permanent magnet staggered type modularized continuous pole permanent magnet synchronous linear motor

A permanent magnet synchronous linear and permanent magnet technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of large thrust fluctuations of double primary permanent magnet synchronous linear motors, etc., to improve the utilization rate, improve the performance of the control system, Effect of suppressing thrust fluctuations

Active Publication Date: 2021-06-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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 double-primary permanent magnet synchronous linear motor, the present invention proposes a bilateral permanent magnet interleaved modular continuous pole permanent magnet synchronous linear motor

Method used

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  • Bilateral permanent magnet staggered type modularized continuous pole permanent magnet synchronous linear motor
  • Bilateral permanent magnet staggered type modularized continuous pole permanent magnet synchronous linear motor
  • Bilateral permanent magnet staggered type modularized continuous pole permanent magnet synchronous linear motor

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The bilateral permanent magnet interlaced type modular continuous pole permanent magnet synchronous linear motor of the present invention includes a plurality of unit motors arranged in parallel, each unit motor includes an upper primary assembly and a lower primary assembly symmetrically arranged on both sides of the secondary assembly, each The unit motors share the secondary components, and there is an air gap between the upper and lower primary components and the secondary components; a magnetic isolation structure is provided between the primary components of adjacent unit motors; both the upper and lower primary components include iron core yokes, Iron core teeth and armature winding, armature winding adopts concentrated winding structure; secondary components include yoke plate, permanent magnet and iron pole;

[0042] Both sides of the yoke plate of the secondary assembly are alternately provided with permanent magnets and iron stages, and the permanent magnets o...

Embodiment 2

[0045] The further optional design of this example is that the length of the magnetic isolation structure between the primary components of adjacent unit motors is S-L, and S is the distance between the left ends of the two upper primary components, and S=(2k±1 / 2 )τ, k is an integer; L is the length of the primary component of the unit motor; the winding settings of the upper and lower primary components of each unit motor are exactly the same; through the symmetrical setting of the upper and lower primary components of each unit motor and the magnetic isolation structure length S-L The setting is used to suppress the thrust fluctuation of the motor.

Embodiment 3

[0047] The bilateral permanent magnet interlaced type modular continuous pole permanent magnet synchronous linear motor of the present invention, such as Figure 1 to Figure 5As shown, it includes multiple unit motors arranged in parallel, each unit motor includes an upper primary assembly 1 and a lower primary assembly 2 symmetrically arranged on both sides of the secondary assembly, each unit motor shares the secondary assembly, and the upper core of the upper primary assembly is set The upper core of the upper primary assembly is slotted 1-4, the upper core of the lower primary assembly is slotted 2-4, and two sets of air gaps 4 are left between the upper and lower primary assemblies and the secondary assembly 3 respectively; In adjacent unit motors, a magnetic isolation structure 1-5 is provided between the upper primary components, and a magnetic isolation structure 2 2-5 is provided between the lower primary components; in this example, the magnetic isolation structure ad...

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Abstract

The invention discloses a bilateral permanent magnet staggered type modular continuous pole permanent magnet synchronous linear motor. Bilateral permanent magnets are arranged in a staggered manner, the end force waveform and fluctuation rule of a continuous pole motor are adjusted, and a positioning force period is adjusted to take an electrical angle of 180 degrees as a period due to the arrangement manner that the permanent magnets are arranged in a staggered manner; meanwhile, positioning force harmonic waves generated by the end effect are basically eliminated, and the positioning force generated on the unit motor is counteracted due to reverse phases due to the arrangement of the length of the magnetic isolation structure, so the thrust fluctuation of the continuous pole motor is inhibited. By adjusting the phase sequence of the three-phase windings among the unit motors, on one hand, the electrical angles of the same-phase windings on different unit motors are basically the same, so that the average value of output thrust is not influenced; on the other hand, the magnetic field distribution of the end parts of the unit motors is adjusted, so that the relative positions of each phase winding on each unit motor and the end parts are different, the influence of the end part effect on the asymmetry of the three-phase windings is adjusted, the thrust fluctuation is finally inhibited, and the performance of a control system is improved.

Description

Technical field: [0001] The invention belongs to the field of motors, and in particular relates to a bilateral permanent magnet interlaced modular continuous pole permanent magnet synchronous linear motor. Background technique: [0002] The double-sided flat permanent magnet synchronous linear motor adopts two primary components and one secondary component. The normal force formed between the primary and secondary can basically cancel each other on the middle part, eliminating the influence of the normal force. It has the advantages of high thrust and thrust density, so it has broad application prospects in various high-precision, high-thrust density linear motion control occasions. However, due to the joint influence of end effect, cogging effect and armature reaction, as well as the differences between its positioning force characteristics and thrust fluctuation characteristics compared with traditional NS pole motors, traditional optimization methods cannot effectively su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K41/031
Inventor 丁徐哲黄珺李静黄旭珍
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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