A stator winding, a motor stator and a motor

Abstract

A stator winding of the present invention, a motor stator and a motor, each phase winding is connected in parallel with 6Y branches, and the number of slots per pole and phase is 2; and at least a plurality of conductor groups 1 arranged at intervals along the circumferential direction of the stator core; There are also several conductors 1 and / or several conductor groups 2 in the circumferential direction of the stator core; the conductor group 1 is arranged on the radially innermost and outermost layers of the stator core; the conductors placed on the radially innermost layer of the stator core Group 1 and the conductor group 1 placed on the radially outermost layer of the stator core are dislocated along the circumferential direction of the stator core; the other layers in the same radial direction as the conductor group 1 are conductor 1 and / or conductor group 2; Other layers not in the same radial direction are all conductor one or conductor group two; adjacent conductor group one and / or conductor group two and / or conductor one stacked radially along the stator core are inserted into adjacent slots of the stator core The two slot inner segments are arranged in different layers of two adjacent slots in the same radial direction of the stator core. The invention has simple structure and symmetrical magnetic circuit, and eliminates loop current.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a stator winding, a motor stator and a motor. Background technique [0002] In the prior art, the stator winding includes various types of conductors, and the various types of conductors include U-shaped conductors and S-shaped conductors. The coils of various types of conductors are inserted into the slots of the stator iron core according to a certain arrangement to form all types of conductors. Windings for polyphase motors required. There are many types of hairpin coils used in the prior art, the manufacturing process is complicated, the production cost is high, and the processing efficiency is low. At the same time, due to the mixed arrangement of various types of conductors, it is easy to cause problems such as large loop current, use of more bridge wires, and uneven heat dissipation, resulting in low motor power and low torque, which increases production and ma...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a stator winding, a motor stator and a motor, and is especially suitable for a stator winding composed of a single U-shaped conductor, which solves the problem of unreasonable structural design of hairpin coils formed by mixed arrangement of multiple conductors in the prior art. The resulting high loop current, many bridge wires and uneven heat dissipation lead to technical problems of low motor power and small torque

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