Cylinder-shaped polyphase linear permanent-magnet synchronous generator

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...

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 The problem that the two parameters are mutually restrained and the selection is limited, the present invention provides a cylindrical multi-phase linear permanent magnet synchronous motor

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