Doubly salient double squirrel cage outer rotor structure of stator permanent magnet dual-rotor motor

Abstract

The invention discloses a doubly salient double squirrel cage outer rotor structure of a stator permanent magnet dual-rotor motor. The doubly salient double squirrel cage outer rotor structure comprises an outer rotor body, outer squirrel cage bars, inner squirrel cage bars and an end ring, wherein the outer rotor body is of an internal-external doubly salient structure formed by overlying silicon steel laminations, the outer rotor body is provided with an outer slotted hole group and an inner slotted hole group which are formed by a plurality of through holes uniformly distributed along the peripheral direction, the through holes of the outer slotted hole group are close to an outer circumference of a yoke part of an external salient pole in the radial direction and located at the tangential middle position of two adjacent salient poles of the external salient pole in the tangent direction, the through holes of the inner slotted hole group are close to an inner circumference of a yoke part of an internal salient pole in the radial direction and located at the tangential middle position of two adjacent salient poles of the inner salient pole in the tangent direction, each of the through holes of the outer slotted hole group is fixedly embedded with one outer squirrel cage bar, each of the through holes of the inner slotted hole group is fixedly embedded with one inner squirrel cage bar, and the end parts of the inner squirrel cage bars and the outer squirrel cage bars are all fixedly connected with the end ring, thereby being capable of not only reducing the rotor loss, but also improving the rigidity and the strength.

Description

technical field [0001] The invention relates to a double-rotor motor, in particular to an outer rotor structure of the double-rotor motor, and belongs to the field of motor design. Background technique [0002] The structural feature of the double-rotor motor is that it has a stator and two inner and outer rotors. There are permanent magnets on the outer rotor of most dual-rotor motors. In addition to the problems of difficult fixing and heat dissipation, there is also the problem that the inner and outer magnetic fields are easy to influence each other. In order to overcome these problems, a stator permanent magnet dual rotor motor is proposed. The outer rotor of the stator permanent magnet dual rotor motor has no permanent magnets and no windings. It is a double salient pole structure. The magnetic field of the inner and outer motors is a non-uniform magnetic field type. To solve the problem of magnetic field coupling of internal and external motors, whether to de...

AI Technical Summary

Problems solved by technology

Because the lamination structure cannot be used, the rotor loss is relatively large

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