Single/double-layer stator winding for 24-slot 2-pole three-phase alternating current motor

Abstract

The invention relates to a single / double-layer stator winding for a 24-slot 2-pole three-phase alternating current motor. The single / double-layer stator winding is evolved from a three-phase dual-layer short-distance distribution lap winding in which equal spans among 24-slot 2-pole coils are 10 slots; four coils are arranged in each phase of positive and negative phase belts; in each phase of positive and negative phase belts, upper and lower coil edges of coils in adjacent two slots belong to the phase; the upper coil edge of the coil in a small-number slot in the adjacent two slots is moved into a large-number slot, and the end part length is reduced; the lower coil edge of the coil in the large-number slot is moved into the small-number slot, and the end part length is reduced; the spans among the four coils of which the coil edges are moved in each phase are 9 slots; and the coils of which the four coil edges are moved and the four coils of which the coil edges are not moved construct four groups of coil groups consisting of two inner concentric-like coils and two outer concentric-like coils. Under the situation of not changing an electrodynamic force winding coefficient or a magnetomotive force winding efficient, an end-part copper wire is short; the loss is low; and the efficiency is high. When the total number of turns is constant, the number of turns of the coils which are 10 slots in spans is properly larger than the number of turns of the coils which are 9 slots in spans, and the motor performance can be further improved.

Description

technical field [0001] The invention belongs to the field of electrical engineering and relates to a single-layer and double-layer stator winding of a 24-slot, 2-pole, three-phase AC motor. Background technique [0002] At present, most of the 24-slot 2-pole three-phase AC motors with high speed and high power adopt three-phase double-layer short-distance distributed stacked windings with equal-span coils, or adopt the evolution of double-layer short-distance distributed stacked windings with equal-span coils. From the single-layer winding. [0003] The 24-slot 2-pole three-phase AC motor coil is an equal-span double-layer short-distance distributed stacked winding. The three-phase winding is divided into phases according to 60° phase belts. Each phase has a positive phase belt and a negative phase belt. Each phase belt There are 4 coils in each phase, the positive phase has 4 coils in series to form a phase winding coil group, the negative phase has 4 coils in series to fo...

AI Technical Summary

Problems solved by technology

However, since each coil group of the single-layer and double-layer windings is composed of 3 concentric coils, the total length of the copper wire at the end of the coil is still somewhat long, which limits the efficiency of the motor

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