A Flat Type Transverse Flux Switching Permanent Magnet Linear Motor

Abstract

The invention discloses a flat type transverse magnetic flux switching permanent magnet linear motor, comprising a flat type motor primary and a flat type motor secondary, the motor primary and the motor secondary are installed oppositely, an air gap surface is left in the middle, and the motor primary is installed with a Permanent magnets and windings work on the principle of magnetic flux switching; it is characterized in that: the motor primary includes more than one primary unit, the primary unit includes a primary unit iron core, and the primary unit iron core consists of two primary unit cores perpendicular to the direction of motion v Composed of unit core blocks, the primary unit core block is formed by laminating primary electrical steel sheets along the moving direction v; the secondary of the motor is formed by laminating secondary electrical steel sheets along the moving direction v. The motor provided by the invention has a simple structure and production process, both primary and secondary can be laminated to reduce iron loss, high utilization rate of permanent magnet and winding, uniform permeance of permanent magnet magnetic circuit, small positioning force, small eddy current, and electric thrust only It is related to the length of the motor and can be designed in rapid batches and other beneficial effects.

Description

technical field [0001] The invention relates to a flat-plate transverse magnetic flux switching permanent magnet linear motor, which belongs to a linear servo motor. Background technique [0002] There are a large number of linear motion modes in the industrial field, and many of these motion modes still use rotary motors as drives, and then convert them into linear motion with a large number of mechanical components such as crankshafts and reduction gears. These intermediate conversion components not only consume a lot of energy, increase the risk of system failure and maintenance costs, but also mostly make the working mode control single and difficult to change. Direct drive technology was created to solve such difficulties, and in order to simplify the conversion mechanism of the system, the linear drive needs to have better electrical and control performance than the rotary drive. Existing linear actuators are mainly divided into several types of motors according to th...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the insufficient utilization of the existing magnetic flux switching permanent magnet linear motor windings, permanent magnets, and iron cores, the uneven change of permanent magnet reluctance introduces thrust fluctuations, and the coupling between the pole pitch and the motor cogging size causes the motor with small pole pitch to be relatively heavy. It is difficult to design, and the lamination scheme is not ideal, or the reluctance jumps or cannot be laminated, resulting in large core loss; the invention provides a flat-plate transverse flux switching permanent magnet linear motor, which adopts the Properly matching the bent stator core can make the structure of the secondary stator core simple, the lamination and assembly of the primary armature are not complicated, and the side ends of the motor winding are small, the permanent magnet reluctance changes evenly, and the permanent magnet utilization rate is improved. , The decoupling of motor pole pitch and tooth slot size is convenient for motor design, and finally achieves the beneficial effects of better control performance of flux switching permanent magnet linear motor, improved material utilization rate, reduced loss, and simple processing

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