A split-tooth modular vernier permanent magnet linear motor

Abstract

The invention discloses a split tooth modular vernier permanent magnet linear motor. The split tooth modular vernier permanent magnet linear motor includes a primary iron core, armature windings, a secondary iron core and permanent magnets, wherein the primary iron core is in an inverted U shape, and split teeth (virtual grooves) are arranged at the tail ends of the iron teeth of the primary ironcore; the armature windings wind around the primary iron core; the secondary iron core is of a tooth groove structure, an air gap is arranged between the secondary iron core and a rotor iron core at acertain distance, and the secondary iron core and the rotor iron core can move mutually; the permanent magnets are arranged in the virtual grooves of the primary iron core and secondary iron core grooves correspondingly, and the permanent magnets are magnetized in the same direction (both north pole or both south pole). According to the split tooth modular vernier permanent magnet linear motor, the permanent magnets are arranged in the primary and secondary of a motor, and meanwhile the primary and secondary permanent magnets and iron teeth mutually form working magnetic density to conduct electromechanical energy conversion according to the principle of magnetic field modulation motors; since the principle of bilateral magnetic field modulation is adopted, the motor thrust density is increased; at the same time, since no coupling exists in the magnetic circuit of each phase winding in the motor primary, the unbalance of electromagnetic parameters of each phase of a linear motor is weakened, and the fault-tolerance performance of the motor is enhanced.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet motors, and more specifically relates to a split-tooth modular vernier permanent magnet linear motor. Background technique [0002] Compared with the solution of rotating motor and ball screw to form linear motion, the solution of using linear motor to directly generate linear motion has a simpler structure, higher efficiency and better stability. Therefore, linear motors are becoming more and more popular in industrial fields that require linear motion. Among many linear motors, the vernier permanent magnet linear motor using the principle of permanent magnet and vernier motor has the characteristics of simple structure and high efficiency of permanent magnet motor and the characteristics of low speed and high torque of vernier motor, so it has attracted much attention in recent years. [0003] Patent CN105553222 discloses a fault-tolerant permanent magnet vernier linear motor without e...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a split-tooth modular vernier permanent magnet linear motor, thereby solving the negative impact of the edge-end effect in the prior art and the thrust of the vernier permanent magnet linear motor Technical problems that make it difficult to further increase the density

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