Double-winding motor stator

Abstract

The invention provides a double-winding motor stator. The double-winding motor stator comprises a stator body, windings A, windings B and an insulating layer; the stator body is of a centralized winding structure; even slots are formed in the stator body; each tooth part on the stator body is coiled with the windings A and the windings B; the windings A and the windings B of adjacent two tooth parts are alternatively coiled at the inner layer and the outer layer; the winding A and the winding B in each slot are separated through the insulating layer. According to the double-winding motor stator, the layers in the slots are separated through a polyimide film, the end parts are coiled with 556 tapes, and thus the two windings are completely isolated; the two sets of windings are alternatively coiled in the inner layer and the outer layer so as to ensure the consistency of the copper usage of the two sets of windings; the inner part of each slot between the coiled winding A and winding B sets is completely separated from the end part, so that the two sets of windings can be completely independent from each other; in addition, the resistance difference is small and less than 0.27%, and thus the requirement on symmetry of resistance of the two windings can be met.

Description

technical field [0001] The invention relates to the technical field of motor armature winding structure design, in particular to a double-winding motor stator. Background technique [0002] A driving motor requires high reliability of the motor, and the reliability is 0.999991. Considering that the winding is the key factor affecting the life of the motor, the design adopts the double winding structure to improve the reliability of the motor. At present, the design difficulties of double-winding motors mainly exist in the following two aspects: ① The two sets of windings are independent of each other, and the insulation performance between the windings is excellent. The failure of one winding will not affect the performance of the other winding, so as to achieve high reliability of the motor and high-performance stability; ②The resistance of the two sets of windings is required to be symmetrical, and the difference in resistance between the double windings must be controlle...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a double-winding motor stator, the double-winding motor stator simultaneously winds the winding A and the winding B on the teeth of the stator, and the winding A and the winding on the two adjacent teeth B The inner and outer layers are alternately wound to solve the problem that the two sets of windings cannot be independent and the resistance is asymmetrical

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