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stator

A stator and winding technology, applied in the stator field, can solve the problems of increasing the overall copper wire loss, reducing the effective cross-sectional area, and reducing the copper wire slot ratio, so as to reduce the influence of the proximity effect, reduce the slot ratio, and reduce AC The effect of loss

Active Publication Date: 2020-07-31
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will lead to a decrease in the slot ratio of the copper wire, a decrease in the effective cross-sectional area of ​​the copper wire, and an increase in the DC resistance, thereby increasing the loss of the overall copper wire

Method used

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Embodiment Construction

[0036] A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some conventional structures and components in the prior art will be shown in a simple and schematic manner in the drawings.

[0037] Please refer to Figure 1 to Figure 3 . figure 1 It is a perspective view illustrating a stator 100 according to an embodiment of the present invention. figure 2 for illustration figure 1 Another perspective view of the stator 100 in . image 3 for illustration figure 1 A partial cross-sectional view of the stator 100 along line 3-3 in FIG.

[0038] like figure 1 and figure 2 As sh...

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Abstract

The invention relates to a stator. The stator is applied to an electric motor. The stator includes a hollow core and a plurality of windings; the hollow core has two opposite surfaces and a pluralityof accommodating slots which extend towards the surfaces in a through manner; the accommodating slots are arranged annularly; each winding contains a plurality of wires which are accommodated and wound in the accommodating slots; the portions of the wires of the windings, which are located in the accommodating slots, are radially arranged concentrically so as to form a plurality of wire wound layers; and in at least one of the accommodating slots, the sectional area of the wires of the wire wound layer distributed at the innermost side of the accommodating slot is smaller than the sectional area of the wires of the wire wound layer distributed the outermost side of the accommodating slot.

Description

technical field [0001] The invention relates to a stator used in a motor Background technique [0002] On the stator used in electric motors, due to low-voltage applications or high-power requirements, the wires wound in its accommodating slots usually need sufficient cross-sectional area to withstand large currents. The current existing technology is to use Stranded wires with the same cross-sectional area or a single copper wire with a larger cross-sectional area. A single copper wire has the advantage of a higher slot ratio, but due to the relationship between the skin effect and the proximity effect, the AC loss of the copper wire with a large cross-sectional area will increase rapidly as the motor speed increases. In order to solve this problem, a common practice at present is to use multi-strand wires with a smaller cross-sectional area of ​​copper wires to reduce the AC loss of copper wires by reducing the cross-sectional area of ​​a single copper wire. However, thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K3/16H02K3/28H02K3/34
CPCH02K1/16H02K3/16H02K3/28H02K3/34
Inventor 许宏成林欣政简嘉兴
Owner DELTA ELECTRONICS INC