A primary permanent magnet maglev linear motor

Abstract

A primary permanent magnet maglev linear motor is disclosed, consisting of primary and secondary components, Between primary and secondary there is an air gap, the length of the secondary is greater than that of the primary, the primary is composed of n armature modules, n+1 suspension module and 2n magnetic barrier, n is a positive integer and n is equal to or greater than 3, and a first suspension module, a first magnetic barrier, a first armature module, a second magnetic barrier, a second suspension module, a third magnetic barrier, a second armature module, a fourth magnetic barrier, a third suspension module,..., an nth suspension module, a 2nth suspension module and n+1th suspension module are sequentially arranged in a primary stage. The linear motor realizes the decoupling of thesuspension magnetic field and the armature magnetic field, and the magnetic conductance of the magnetic circuit through which the suspension winding magnetic field passes is independent of the secondary position, so that the levitation force control of the linear motor does not need to know the secondary position information, and the control system is greatly simplified.

Description

technical field [0001] The invention belongs to the field of linear motors, in particular to a primary permanent magnet magnetic levitation linear motor. Background technique [0002] With the development of industrial applications, linear motors are used more and more widely. In the case of linear drive, compared with rotary motors, linear motors directly convert electrical energy into mechanical energy for linear motion without intermediate conversion links. The structure is simple, the dynamic response is fast, the efficiency is high, and the construction cost is low. The combination of magnetic levitation and linear motor leads to some new technologies, such as magnetic levitation train, production conveyor line and so on. In the selection of linear motors, linear induction motors or permanent magnet linear motors can be used. The efficiency and power factor of linear induction motors are relatively low. etc. have significant advantages. [0003] However, the windings...

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Problems solved by technology

[0005] In the prior art, there are problems that the floating magnetic field of the primary permanent magnet linear motor is coupled with the thrust magnetic field, the structure of the motor is complex, and the levitation control needs to know the secondary position information. In order to overcome these shortcomings, the present invention proposes a primary permanent magnet linear motor with a two-dimensional structure Magnetic levitation linear motor, through the special design of the levitation module, the control of the levitation force is not affected by the thrust control, and has nothing to do with the secondary position

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