Cylinder-shaped polyphase linear permanent-magnet synchronous generator

A permanent magnet synchronous motor, cylindrical technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problem of limited selection, achieve the effect of improving the performance volume ratio, facilitating the processing technology, and increasing the output thrust

Inactive Publication Date: 2008-04-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the armature core pitch τ in the existing cylindrical multi-phase linear permanent magnet synchronous motor t The pole distance τ from the permanent magnet p T

Method used

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  • Cylinder-shaped polyphase linear permanent-magnet synchronous generator
  • Cylinder-shaped polyphase linear permanent-magnet synchronous generator
  • Cylinder-shaped polyphase linear permanent-magnet synchronous generator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] Embodiment 1: The cylindrical polyphase linear permanent magnet synchronous motor of this embodiment includes a primary, a secondary and an air gap. The primary includes an armature iron core 2 and an armature winding 3, and the armature iron core 2 is annular. The armature winding 3 is embedded in the slot of the armature core 2, the secondary includes a permanent magnet 4, the permanent magnet 4 is a circular structure, and the tooth pitch τ of the armature core 2 t Pole distance τ from permanent magnet 4 p 0.8τ is satisfied between t ≤τ p ≤1.2τ t , and τ t ≠τ p this relationship.

[0010] The permanent magnets 4 described in the cylindrical polyphase linear permanent magnet synchronous motor described in this embodiment are surface permanent magnet structures or embedded permanent magnet structures.

[0011] The cylindrical polyphase linear permanent magnet synchronous motor described in this embodiment is a structure in which the primary is sheathed outside th...

Example Embodiment

[0012] Embodiment 2: The difference between this embodiment and the cylindrical polyphase linear permanent magnet synchronous motor described in Embodiment 1 is that the tooth pitch τ of the armature core 2 t Pole distance τ from permanent magnet 4 p 0.8τ is satisfied between t ≤τ p t this relationship.

Example Embodiment

[0013] Embodiment 3: The difference between this embodiment and the cylindrical polyphase linear permanent magnet synchronous motor described in Embodiment 1 is that the tooth pitch τ of the armature core 2 t Pole distance τ from permanent magnet 4 p satisfy τ t p ≤1.2τ t this relationship.

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Abstract

A cylindrical multi-phase linear permanent magnet synchronous motor relates to the motor field. The motor resolves the question that the Taut of a teeth space of an iron core (Taut) is contained and limited with of the Taup of a pole space of a permanent magnet. The motor comprises a primary structure, a secondary structure and an air gap. And the primary structure includes the circular iron core and a winding of an armature embedded in the iron core slot of the armature. The secondary structure includes the circular permanent magnet. The teeth space of the iron core Taut and the pole space of the permanent magnet Taup can meet following correlation requirement: Taup is more than and equal to 0.8 Taut, but less than and equal to 1.2 Taut, and Taut is not equal Taup. The teeth space of the iron core Taut and the pole space of the permanent magnet (Taup) can be selected practically, with small difference therebetween. The invention reduces the positioning force caused by the slot effect, and upgrades the output of pulling force in unit volume. In addition, the motor can be utilized as a linear motor, as well as a linear generator.

Description

technical field [0001] The invention relates to the field of motors, in particular to a cylindrical multiphase linear permanent magnet synchronous motor. Background technique [0002] The structure of a traditional cylindrical multiphase linear permanent magnet synchronous motor is shown in Figure 6. The armature core pitch of the motor τ t The pole distance τ from the permanent magnet p between nmτ t =τ p This relationship (n is a natural number; m is the number of phases of the motor, m≥2), this structure is called an integer slot structure, that is, the number of slots per pole and phase of the motor is an integer. The main problems of the linear permanent magnet synchronous motor with integer slot structure are: on the one hand, the positioning force of the motor caused by the cogging effect is relatively large; on the other hand, the performance-to-volume ratio of the motor is low, which is mainly due to the p When the design is large, the yoke part of the permanen...

Claims

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Application Information

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IPC IPC(8): H02K41/03
Inventor 寇宝泉邵永实李立毅程树康
Owner HARBIN INST OF TECH
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