Primary permanent magnet type linear motor for urban railway traffic

Abstract

The invention provides a primary permanent magnetic linear motor used for urban rail transit, comprising a primary structure (1) and a secondary structure (2), both of which adopt salient structures; wherein, the primary structure (1) comprises a primary iron core (5), a permanent magnet (3) and an armature winding (4); the permanent magnet (3) is arranged on the primary iron core (5); the armature winding (4) is wound on a primary gear; the primary structure (1) is arranged on a train; and the secondary structure (2) is a magneto-conductive steel rail which is arranged on a train rail. The armature winding (4) adopts an integrated winding structure; and the permanent magnet (3) is arranged between the primary gears or on the surface of the primary yoke part or the primary gear part and can be used for the field of urban rail transit. The primary permanent magnetic linear motor comprises a primary structure with the armature winding, the permanent magnetic pole and the iron core which are arranged on the train, and a primary steel rail which is laid along the guideway line; the structure is simple so that the installation and maintenance are convenient. The primary permanent magnetic linear motor can reduce the cost of the rail transit, improve the efficiency of the motor and have extremely high theoretic and practical values.

Description

technical field [0001] The invention relates to the fields of electrician, motor and rail transit, in particular to a novel permanent magnet linear motor suitable for urban rail transit. Background technique [0002] With the acceleration of urbanization and the density of urban buildings, urban rapid rail transportation such as subways and light rails play an important role in the sustainable development of cities with their advantages of low energy consumption, less pollution, and punctuality. At the same time, the research on traction motors for urban rail transit has also received more and more attention from scholars in related fields. [0003] In terms of technology, electrified urban rail traction motors can mainly adopt two technical approaches: rotary motors and linear motors. Urban rail trams using linear motors directly convert electrical energy into mechanical energy for linear motion without any transmission device for intermediate conversion mechanisms, which ...

AI Technical Summary

Problems solved by technology

However, it also has some disadvantages, such as the need to lay winding wires or permanent magnets on the side of the rail, which greatly increases the project cost

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