Enameled wire stator with low alternating current loss

Abstract

The invention discloses an enameled wire stator with low alternating current loss, the inner wall of the stator is provided with a plurality of mounting grooves for placing an enameled wire group, the enameled wire group comprises a plurality of first enameled wires and second enameled wires, the bottom of each second enameled wire is provided with a groove, and each second enameled wire is arranged at one end of a notch of the corresponding mounting groove. The first varnished wire is arranged at one end, away from the notch, of the second varnished wire, the varnished wire with the groove is placed at the notch position of the mounting groove or close to the notch position, and when an armature reacts, due to the fact that the magnetic potential is the strongest, leakage flux linkage in the groove is generated at the notch position most easily at the position close to the notch position. The enameled wire with the groove can effectively improve the current distribution uniformity of the notch wire, thereby achieving the effect of reducing the alternating current loss, and being simple in structure and convenient to use.

Description

technical field [0001] The invention relates to the field of enameled wire stators, in particular to an enameled wire stator with low AC loss. Background technique [0002] In order to further improve the power density of motor products, more and more square-section wires are used as motor components in high-power-density motors for new energy vehicle drive motors. There are always magnetic force lines passing along the circumferential direction, which leads to a large eddy current inside the wire, which also leads to a significant increase in the AC loss of the motor when it is working at high speed and high frequency. At present, in order to solve this problem, the wire in the motor slot The number of layers is designed more and more, but too many slots will not only lead to more and more insulation and air area, but also more and more expensive manufacturing equipment, so an enameled wire stator with low AC loss is required. Contents of the invention [0003] The techn...

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Problems solved by technology

[0002] In order to further improve the power density of motor products, more and more square-section wires are used as motor components in high-power-density motors for new energy vehicle drive motors. There are always magnetic force lines passing along the circumferential direction, which leads to a large eddy current inside the wire, which also leads to a significant increase in the AC loss of the motor when it is working at high speed and high frequency. At present, in order to solve this problem, the wire in the motor slot The number of layers is designed more and more, but too many slots will not only lead to more and more insulation and air area, but also more and more expensive manufacturing equipment, so an enameled wire stator with low AC loss is required

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