High temperature superconducting magnetic suspension vehicle driven by permanent magnet linear synchronous motor without gear grooves

Abstract

The invention relates to a high temperature superconducting magnetic suspension vehicle driven by a permanent magnet linear synchronous motor without gear grooves. The high temperature superconducting magnetic suspension vehicle comprises a vehicle body, a high temperature superconducting suspension system and a linear motor propulsion system. The linear motor propulsion system is arranged at the two sides at the lower portion of guiding rail beam or the middle upper portion of the guiding rail beam. A winding of the permanent magnet synchronous motor is fixed by non-ferromagnetic materials and the like, which has the advantages of good heat conduction performance, convenient installation and the like; a vehicle permanent magnet secondary does not need vehicle power supply, the secondary is light in weight and the vehicle effective loading is large; when a single-side permanent magnet linear synchronous motor without the gear grooves is used, the magnetic attraction between the permanent magnet and a back iron of a long stator can be used as suspension force for the magnetic suspension vehicle system, and the overall suspension capacity of the magnetic suspension vehicle is improved; when a double-side permanent magnet linear synchronous motor without the gear grooves is used, the vehicle permanent magnet is subjected to small lateral force and no vertical force; the linear motor propulsion system has little disturbance to the vehicle suspension system, and the system runs dynamically and has good stability.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a high-temperature superconducting magnetic levitation vehicle driven by a permanent magnet synchronous linear motor without cogging. Background technique [0002] Maglev train is a land non-contact rail vehicle without wheels, which uses electromagnetic levitation and electric traction. According to the principle of electromagnetic levitation, this kind of train can be divided into two categories: constant conduction suction levitation and superconducting repulsion levitation. [0003] The existing high-temperature superconducting maglev vehicle systems all adopt linear induction motor drive schemes. Linear induction motor has the advantages of simple structure, low cost, simple and reliable control system, etc., but it also has disadvantages such as small thrust, low efficiency, low power factor, and poor high-speed performance, so it is more suitable for medium and low-speed magnetic ...

AI Technical Summary

Problems solved by technology

However, the commonly used permanent magnet synchronous linear motor has a large normal magnetic attraction force, and the normal force is about 10 times the thrust force, and there are large fluctuations in the normal force and thrust of the motor during the movement, and the normal force fluctuation will affect the suspension. The stability of the system causes disturbance, and the thrust fluctuation will affect the operating comfort of the magnetic levitation vehicle, so the cogged iron core permanent magnet synchronous linear motor is not suitable for the high temperature superconducting magnetic levitation drive system

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