Fault-tolerant linear motor capable of reducing and saving permanent-magnet material

Abstract

The invention discloses a fault-tolerant linear motor capable of reducing and saving a permanent-magnet material, belonging to the technical field of motor manufacturing. The fault-tolerant linear motor capable of reducing and saving a permanent-magnet material comprises a primary stage and a secondary stage, wherein the secondary stage is in a projecting pole structure having equal tooth width; an air gap is formed between the primary stage and the secondary stage; the primary stage comprises armature teeth of a projecting pole structure and fault-tolerant teeth of a projecting pole structure; the armature teeth and the fault-tolerant teeth are alternately arranged in a staggered mode; each armature tooth is wound with a concentrated winding; a permanent magnet is adhered to the end part of each armature tooth; the width of the permanent magnet is half of the tooth width of the armature tooth; and the magnetizing directions of the permanent magnets on all the armature teeth are the same and are parallel to the central axis of each armature tooth. According to the invention, the problem of serious magnetic leakage of the traditional flux reversal linear motor is solved to some extent, the utilization ratio of the permanent magnet is improved, and the manufacturing cost of the motor is indirectly reduced; and meanwhile, the flux reversal linear motor is endued with high fault-tolerant property, and thus, the fault-tolerant linear motor has favorable application prospect in wheel-rail transportation having high reliability requirement.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and more precisely relates to a magnetic flux reverse linear motor, which is especially suitable for rail transit systems requiring high reliability and long travel. Background technique [0002] With the continuous deepening of my country's economic construction, the vast territory and many traffic problems brought about by the large population have posed a huge challenge to my country's wheel-rail transportation system. In the past, when linear motion was required, some intermediate transmissions were usually driven by a rotary motor to convert the rotary motion of the motor into linear motion. However, due to the complex structure of the intermediate mechanical transmission device, it is prone to friction and wear during long-term operation, resulting in a decrease in accuracy, which brings problems to improve control accuracy and motion reliability. At the same time, the position...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of existing motor technology, the present invention proposes a fault-tolerant linear motor that saves permanent magnet materials, which can solve the serious problem of magnetic flux leakage in traditional flux reversal linear motors, improve the utilization rate of permanent magnets, and indirectly reduce the manufacturing cost of motors. cost, while enabling flux-reversed linear motors to have high fault-tolerant performance

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