Stator modular double-rotor doubly salient permanent magnet motor

Abstract

The invention discloses a stator modular double-rotor doubly salient permanent magnet motor, which comprises an inner salient pole rotor, an outer salient pole rotor and a stator located between the inner salient pole rotor and the outer salient pole rotor, wherein independent air gaps are formed between the inner salient pole rotor and the stator and between the outer salient pole rotor and the stator respectively; the stator comprises a plurality of stator modules, each stator module comprises a stator yoke part, outer stator teeth and inner stator teeth, the outer stator teeth and the innerstator teeth are connected with the outer side and the inner side of the middle position of the stator yoke part respectively, and the stator yoke parts of the stator modules are connected through permanent magnets to form a complete stator; armature windings are wound on the outer stator teeth and the inner stator teeth of each stator module; and positive and negative alternating counter electromotive forces are induced in armature windings of the inner and outer stators of the motor along with synchronous rotation of the inner and outer rotors and change of relative positions of the stators. The problem of serious stator side flux leakage of the traditional single-rotor doubly salient permanent magnet motor is solved, and the permanent magnet utilization rate and the motor torque density are improved.

Description

technical field [0001] The invention belongs to the field of permanent magnet motors, in particular to a dual-rotor double-convex permanent magnet motor. Background technique [0002] Both the permanent magnet and the armature winding of the biconvex permanent magnet motor are located on the stator, which is easy to realize the cooling of the winding and permanent magnet, and it is easy to realize the temperature rise control of the motor to ensure the reliable operation of the motor. The rotor of the biconvex permanent magnet motor adopts a salient pole iron core structure, and has neither armature winding nor permanent magnet. It has high mechanical strength and is suitable for high-speed operation. It is very suitable for high-speed electric drive applications such as aerospace and electric vehicles. However, the inner rotor (outer rotor) of double-convex permanent magnet motor has serious magnetic flux leakage outside the stator (inside the stator), which leads to low ut...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems mentioned in the above-mentioned background technology, the present invention proposes a stator modular double-rotor double-convex permanent magnet motor, which solves the problem of magnetic flux leakage on the stator side of the traditional single-rotor double-convex permanent magnet motor and improves the utilization rate of permanent magnets.

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