A low-loss semi-closed slot fault-tolerant permanent magnet cylindrical linear motor and its processing method

Abstract

The invention discloses a low-loss half-closed trough type fault-tolerant permanent magnet cylinder linear motor and a machining method thereof. The system comprises a primary stage and a secondary stage. The length of the primary stage is smaller than the length of the secondary stage. An air gap is formed between the primary stage and the secondary stage. The primary stage is composed of a yoke part and teeth, wherein the teeth are composed of armature teeth and fault-tolerant teeth. The end portions of the teeth are provided with pole shoes. A coil winding is arranged in a tooth space. The armature teeth and the fault-tolerant teeth are the same in number and are arranged in a staggered manner. The primary stage is composed of a primary stator iron core and the primary stator iron core is composed of silicon steel sheets and an electrical pure iron. The secondary stage is composed of a permanent magnet and a secondary iron core. The permanent magnet is embedded in the secondary iron core. The secondary iron core is composed of axially laminated silicon steel sheets. Each silicon steel laminated sheet is divided into a plurality of fan-shaped laminated pieces. The inner diameter of each secondary silicon steel sheet is smaller than the inner diameter of the secondary permanent magnet. According to the invention, the low-loss half-closed trough type fault-tolerant permanent magnet cylinder linear motor is convenient to machine and manufacture, and the designing and machining cost of the motor is reduced. Meanwhile, the efficiency of the motor is improved on the basis that the performance of an original permanent magnet embedded cylindrical linear motor is ensured.

Description

technical field [0001] The invention belongs to the technical field of motor design, and more precisely relates to the design of a semi-closed groove cylindrical linear motor, especially suitable for automobile suspension systems and other systems requiring low loss, high reliability and high efficiency. Background technique [0002] With the development of society and the advancement of science and technology, people have higher and higher requirements for ride comfort, safety and stability. As an important part of modern cars, the performance of the suspension system has a great influence on the ride comfort and operation of the car. Stability has an extremely important impact. The research on the performance of the suspension system is highly valued by the industry. As the core component of the active electromagnetic suspension system, the cylinder motor has become the focus of research. [0003] Scholars at home and abroad have proposed many cylindrical motors with diffe...

AI Technical Summary

Problems solved by technology

Different from silicon steel sheets, electrical pure iron is not stacked by laminations, but directly processed into a whole shape. Although it is convenient to process the stator of cylindrical linear motors, it increases the eddy current loss

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