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Cylinder type flux-reversal linear machine

A magnetic flux reversal and linear motor technology, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of motor dynamic characteristics that affect the current control accuracy, low efficiency of linear synchronous motors, and large eddy current losses of solid iron cores, etc., to achieve The effect of improving the control accuracy of current and electromagnetic force, simple structure and small secondary mass

Inactive Publication Date: 2009-10-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of low efficiency, large eddy current loss, complex laminated iron core process and high processing cost of the existing linear synchronous motor; greater eddy current loss in the solid iron core; and mutual inductance problems that affect the control accuracy of the current and the dynamic characteristics of the motor. , and proposed a cylindrical flux reversal linear motor

Method used

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  • Cylinder type flux-reversal linear machine
  • Cylinder type flux-reversal linear machine
  • Cylinder type flux-reversal linear machine

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1 to Figure 9 To illustrate this embodiment, the cylindrical flux inversion linear motor of this embodiment is composed of a primary, a secondary and an air gap;

[0008] The secondary includes secondary teeth 6, spacer rings 7 and shaft cylinder 8; the secondary teeth 6 and spacer rings 7 are arranged alternately and fixedly sleeved on the shaft cylinder 8; the characteristic is that the primary includes phase armature unit 1 and casing 2; The phase armature unit 1 is composed of the phase unit armature core 3 and the phase unit armature winding 4; the phase unit armature core 3 is a ring core with 2n teeth uniformly arranged on the inner circumference, where n is a natural number; the phase unit The armature winding 4 is a concentrated winding, and each coil of the phase unit armature winding 4 is correspondingly wound on each tooth of the phase unit armature core 3, and the winding directions of the coils on adjacent ...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 , figure 2 with image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the phase unit armature core 3 is an integral ring core, and it also includes a tile-shaped permanent magnet 5, and the phase unit armature core 3 is an integral For the ring core, the magnetization direction of the tile-shaped permanent magnet 5 is radial magnetization, and the inner surface of each tooth of the phase unit armature core 3 is sequentially adhered with 2i tile-shaped permanent magnets 5 along the axial direction, wherein i is a natural number, then there are 2n×2i tile-shaped permanent magnets 5 in each phase armature unit 1, and the magnetization directions of every two adjacent tile-shaped permanent magnets 5 along the axial direction are opposite; The magnetization directions of two adjacent tile-shaped permanent magnets 5 are opposite; the center distance τ between eac...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination Figure 4 with Figure 5 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is that it also includes a flat permanent magnet 51, and each phase unit armature core 3 is divided into j segments along the axial direction, wherein j is a natural number, j≥2; The magnetization direction of the flat permanent magnet 51 is axial magnetization, and a flat permanent magnet 51 is fixed between two adjacent sections of the armature core 3 in each phase unit armature core 3, then in each phase armature unit 1 There are 2n×(j-1) flat-shaped permanent magnets 51, and the magnetization directions of every two adjacent flat-shaped permanent magnets 51 in the axial direction are opposite; The magnetic direction is opposite; the circumferential width of the flat permanent magnet 51 is less than or equal to the width of the armature teeth, and the radial height of the flat permanent magnet 51 is less ...

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Abstract

The present invention relates to a cylinder type flux-reversal linear machine. The invention relates to the field of electric machine and settles the problems of low efficiency, large eddy current loss, complex technique and effect to control precision and dynamic characteristic in prior linear machine. The armature core of phase unit according to the nveition is an annular core which is uniformly installed with 2n teeth on the inner circumstance, wherein n is a natural number. The armature winding of phase unit is a concentrated winding. Each coil is corresponding winded on each tooth of armature core of phase unit. The winding directions of coils on adjacent teeth are opposite. All coils on the teeth of armature core of same phase unit are connected in series to a same phase unit armature winding. The phase unit armature windings are connected in series or in parallel to each phase armature winding. A permanent magnet is adhibited on the teeth of armature core of phase unit. The phase unit armature core center distance taut between two adjacent phase armature units in axial direction and the tooth pitch taup of secondary teeth along the axial direction satisfy a relationship: taut=ktaup+ / -(1 / m)taup, wherein k and m are natural numbers, and m is a phase number and is larger than or equal to 3. The cylinder type flux-reversal linear machine not only can be used as a motor, but also can be used as a generator.

Description

technical field [0001] The invention relates to motor technology, in particular to a cylindrical magnetic flux reverse linear motor. Background technique [0002] The structure of the existing cylindrical permanent magnet linear synchronous motor is as follows: Figure 10 shown. When the armature core is made of silicon steel sheets, since the direction of the laminations is axial, the direction of the armature magnetic field generated by the permanent magnet and the winding is partly in the same direction as the laminations, forming a large eddy current in the core, resulting in a larger Large eddy current loss, and the iron core lamination process is complicated, and the processing cost is high; if a solid iron core is used, although the process is simple and the cost is low, the iron core will generate greater eddy current loss, which greatly reduces the efficiency of the motor. At the same time, due to the magnetic coupling between phases, on the one hand, the existence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 寇宝泉谢大纲张赫张鲁
Owner HARBIN INST OF TECH
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