Linear coreless winding, preparation technology and linear permanent magnet motor with winding

Abstract

The invention discloses a linear coreless winding. A wire of the winding is a strip-shaped copper sheet with the section long edge perpendicular to the movement direction of the linear motor, the strip-shaped copper sheets are concentrically wound to form a coil, and a plurality of coils are arranged adjacent to each other so as to form a linear winding structure; a concentrated winding can be adopted in the structure, and interference-free arrangement of end parts of the coils can be realized; or the coils are obtained through further processing, wherein the end parts of the coils are all located on one side of an effective part, and the coils are called an upper coil (100); the upper coil is overturned by 180 degrees along a geometric symmetry line to obtain lower coils (200, 300); the upper coil (100) and the lower coils (200, 300) are alternately arranged with each other to form the linear winding. The invention further discloses a preparation method of the winding and a linear permanent magnet motor with the winding. According to the linear coreless winding disclosed by the invention, an eddy current path is effectively cut off, the eddy current loss of the winding is inhibited, the copper cross section ratio in the air gap space is obviously improved, the power density of the motor is effectively improved, and the weight of the motor is reduced.

Description

technical field [0001] The invention belongs to the technical field of ironless windings, and more specifically relates to a linear ironless winding, a preparation process and a permanent magnet motor with the winding. Background technique [0002] In recent years, due to the non-renewability of fossil energy and increasingly severe environmental problems, as well as the requirements of modern control systems for positioning accuracy and continuous working time, the research and development of linear motors has attracted the attention of scholars and related manufacturers from various countries, and related technologies have also made progress. Great progress. Due to its simple structure, high positioning accuracy, small footprint, safety and reliability, and high response speed and followability, linear motors are widely used in high-speed magnetic levitation trains, urban rail transit, elevators, semiconductor processing equipment, numerical control processing, medical ind...

AI Technical Summary

Problems solved by technology

Traditional rotary motors must convert rotary motion into linear motion by using balls, pulleys, or roller screws. Under heavy loads and the drive shaft is on a vertical plane is the best method, but there are some problems: (1 ) There are many parts and maintenance is complicated; (2) Sintering damage may occur when the speed exceeds the limit; (3) The moving parts are worn and noisy

On the one hand, the actual electromagnetic air gap needs to take into account the thickness of the winding. In order to reduce the cost and weight, the thickness of the winding needs to be reduced; on the other hand, the reduction of the thickness of the winding will increase the resistance and electrical density, which will increase the copper loss , leading to a decrease in efficiency and the risk of overheating, so how to increase the proportion of the copper section in the air gap and reduce the normal thickness of the armature has become an urgent problem to be solved

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