Three-phase motor stator and motor

Abstract

The invention discloses a three-phase motor stator, which comprises a stator iron core and a stator winding, wherein the inner side wall of the stator iron core is provided with a plurality of mounting grooves, two effective edges of the stator winding are stacked in each mounting groove, the stator winding comprises a plurality of stator coils, each stator coil comprises a first coil and a secondcoil, the pitch of the first coil is larger than that of the second coil, the multiple first coils in the same phase are uniformly arranged on the inner side wall of the stator iron core in a surrounding manner, the effective edges of every two adjacent first coils are stacked in the same mounting groove, the multiple second coils in the same phase are uniformly arranged on the inner side wall ofthe stator iron core in a surrounding manner, and the second coils and the corresponding first coils are concentrically arranged. The invention also discloses a motor. With the three-phase motor stator, the end portions of two adjacent stator coils are not overlapped, so that the manufacturing difficulty is reduced, the industrial production is facilitated, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a stator of a three-phase motor, in particular to a stator of a permanent magnet synchronous motor, and also to a motor with the stator. Background technique [0002] The general electromagnetic scheme of the existing new energy drive motor (three-phase motor) is 48 slots and 8 poles, and the stator has 48 slots. Generally, double-layer windings are used, and there are 48 sets of coils in total. The coil pitch (commonly called the number of cross-slots) is 5 slots. Before the stator inserts the wires, the multi-strand copper wires are wound into a nearly rectangular coil. A rectangular coil has four sides, and only the two straight-line sides in the stator core slot work. There are 16 coils per phase, and every 4 coils in series is the smallest branch. The coil connection can be paralleled with up to 4 branches, or two branches can be connected in parallel, or 16 coils can be connected in series in one circuit. The existing ...

AI Technical Summary

Problems solved by technology

The existing stator coil structure layout scheme is difficult to machine winding, requiring skilled professional workers to operate manually, with high labor intensity and low productivity

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