Primary high-temperature super-conducting excitation linear motor with easy phase expansion

Abstract

The invention discloses a primary high-temperature super-conducting excitation linear motor with easy phase expansion. The motor adopts a structure with a short primary rotor and a long secondary stator; an air gap is formed between the primary part and the secondary part; the short primary rotor consists of multiple phase units arranged at intervals at equal spacings in the movement direction; each phase unit comprises a flat plate type primary iron core, a primary salient pole which is positioned at the middle position of the surface of the iron core and protrudes towards the secondary side, a high-temperature super-conducting excitation winding wound around the primary salient pole, primary teeth which protrude from the respective two end surfaces of the primary iron core and the primary salient pole towards the secondary side respectively, and a primary armature winding embedded on the primary teeth in a sleeving manner; and the long secondary stator comprises a flat plate type secondary iron core, and a plurality of secondary salient poles which protrude from the surface of the secondary iron core at equal distances towards the primary side. By adoption of high-temperature super-conducting excitation, strong magnetic field design can be realized and thrust density can be improved, so that the linear motor is suitable for the high-power application occasion; and the short primary rotor adopts the phase unit modular design, so that multiple-phase expansion can be realized easily, and high fault-tolerant performance is achieved.

Description

technical field [0001] The invention relates to a drive motor for rail transit, in particular to an easy-to-phase primary high-temperature superconducting excitation linear motor with an excitation winding and an armature winding placed on the primary side and adopting high-temperature superconducting excitation. Background technique [0002] The motor is an important part of the transmission part of the rail transit. According to the different application places, the selection of the appropriate motor type plays a very important role in improving the performance and efficiency of the entire transmission system. The traditional linear motion is to use a rotary motor to convert the rotary motion into a linear motion through balls, ball screws or pulleys. This method has many problems: the system is large in size, high in cost, difficult to maintain, and low in efficiency. The use of linear motors instead of rotary motors in rail transit can overcome most of the above defects,...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: In order to solve the problems of low efficiency, high manufacturing cost, poor fault tolerance and poor expandability of existing rail transit drive motors, the present invention provides a topology structure of primary high-temperature superconducting excitation linear motor with easy extension phase

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