A C-shaped permanent magnet linear motor with double stator arc and auxiliary slot hybrid structure

Abstract

The invention discloses a C-shaped tooth permanent magnet linear motor with a mixed structure of double stator arcs and auxiliary grooves. The sub-set is set on the output shaft, and the output shaft is provided with a support ring, and the support ring is provided with a mover bracket. The mover bracket is provided with a first permanent magnet and a symmetrically distributed second permanent magnet. The inner wall of the housing is fixed with an outer Stator, the outer stator is equipped with armature windings; the mover of the permanent magnet linear motor of the present invention adopts three permanent magnet structures, which has a larger output force than the traditional single permanent magnet structure; compared with the traditional double stator motor , there are three auxiliary slots on the inner stator, and the length is shortened, the total mass of the motor is reduced, which not only reduces the material cost of the motor, but also improves the power density of the motor; compared with the motor without optimized inner stator , which greatly reduces the positioning force of the motor, and at the same time makes the motor have a longer effective stroke.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a C-shaped tooth permanent magnet linear motor with a mixed structure of double stator arcs and auxiliary slots. Background technique [0002] The traditional compressor drive technology mostly uses rotating motors to connect cranks and shafts, ball screws and other driving methods. Due to mechanical friction and energy transmission during the transmission process, the efficiency is low, and the complex mechanical structure also reduces the reliability and reliability of the system. Increased maintenance difficulty. The linear motor saves the complicated mechanical structure in the compressor because of its unique motion mode, which not only reduces the cost, simplifies the system structure, but also increases the reliability and efficiency of the system. [0003] Among the linear oscillating motors, the permanent magnet linear oscillating motor has been widely concerned and used...

AI Technical Summary

Problems solved by technology

When the motor uses a single permanent magnet as the mover, the mover inertia is small, and the positioning force can be ignored within the effective stroke, but the shortcomings of its relatively small output force and the effective stroke being limited by the axial length of the motor cannot be ignored.

When using three permanent magnet structures, although the output force has been greatly improved, the larger positioning force affects the quality of the output force and increases the difficulty of motor control.

Images