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Single-wire multi-layer winding distribution structure of motor and high-performance motor using same

A multi-layer winding, high-performance technology, applied to the shape/style/structure of the winding conductor, the shape/style/structure of the magnetic circuit, the static parts of the magnetic circuit, etc. Inconvenient line process and other problems

Pending Publication Date: 2021-06-25
JIANGSU JUCI ELECTRICAL DRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the winding slot fullness ratio of the motor is directly related to the working efficiency of the motor, however, due to the inevitable gap between the wires, the ratio of the net cross-sectional area of ​​the winding in the stator slot to the total area of ​​the stator slot (also known as the winding slot full Rate) is relatively low, according to statistics, the winding slot full rate of traditional motors is usually lower than 50%
In order to improve the slot fullness of the winding, the existing technology chooses to adopt a single-wire double-layer winding distribution structure, but the effect of improving the slot fullness is still limited
However, if the multi-layer winding distribution is adopted, it is not only inconvenient in the winding process, but also leads to the inability to realize the electrical connection between the windings of each phase, so the improvement in this direction is still at the level of double-layer winding technology

Method used

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  • Single-wire multi-layer winding distribution structure of motor and high-performance motor using same
  • Single-wire multi-layer winding distribution structure of motor and high-performance motor using same
  • Single-wire multi-layer winding distribution structure of motor and high-performance motor using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: see figure 1 and figure 2 As shown, a single-wire multi-layer winding distribution structure of a motor, the motor includes a stator and a rotor wound with three-phase (including U-phase, V-phase and W-phase) windings, wherein, in this embodiment, the winding adopts copper wire winding , the three-phase winding adopts the star connection method (of course, the delta connection method can also be used); the stator has 48 slots, and the number of slots for each phase winding in the stator is 16 (2a, where a=8), and at the same time Each phase winding adopts 2 (n=2) basic winding units of 2-layer-3-layer distribution structure, that is, each winding basic unit adopts 2-layer-3-layer-2-layer-3-layer distribution, this embodiment The number of winding basic units is 12; the 2-layer-3-layer-2-layer distribution structure in this embodiment refers to the first stator tooth 11a, the second stator tooth 11b, the first stator tooth 11a arranged in order. The third s...

Embodiment 2

[0032] Embodiment 2: The remaining technical solutions of this embodiment 2 are the same as those of embodiment 1, the difference is that please refer to image 3 and Figure 4 As shown, the stator has 12 slots, and the number of slots for each phase winding in the stator is 4 (2a, where a=6), and each winding basic unit 22 also adopts 2 layers-3 layers-2 layers- 3-layer distribution, the number of winding basic units 22 in this embodiment is 3; the double-layer winding 12a' on the stator tooth 21 is formed by winding a single wire at one time, and the three-layer winding 12b' on the stator tooth 21 also adopts a single wire Once wound into shape.

[0033] In order to realize the driving control of the motor, it is usually necessary to install a Hall magnetic element on the motor stator to sense and calculate the rotor position; however, since the Hall magnetic element installed on the stator teeth 21 will be affected by the electromagnetic force of the stator, in During the...

Embodiment 3

[0034] Embodiment 3: In this embodiment 3, the single-wire multi-layer winding distribution structure in the above embodiment 2 is applied as a high-performance motor for electric vehicles, please refer to Figure 5 and Figure 6 As shown, the motor stator 20 includes a stator core 20' formed by laminating several stator punches. The stator core 20' is provided with 12 stator teeth 21, and a semi-closed pear shape is formed between adjacent stator teeth 21. Stator slot 22; wherein, the stator tooth 21 is provided with a Hall slot for installing a Hall magnetic element (known structure, not shown in the figure);

[0035] Preferably, in this embodiment, the stator tooth width t1 is at least 1.5 times the stator core yoke height h1, and the sides of the stator teeth 21 are inclined, wherein the stator tooth width close to the inner peripheral direction of the stator core 20' t1 is greater than the stator tooth width close to the outer peripheral direction of the stator core 20',...

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Abstract

The invention discloses a single-wire multi-layer winding distribution structure of a motor, and a high-performance motor using the same. The motor comprises a stator wound with three-phase windings and a rotor, wherein the number of grooves of each phase winding in the stator is 2a, each phase winding adopts n winding basic units of a 2-to-3-layer distribution structure, a is a positive integer greater than or equal to 1, n is a positive integer greater than or equal to 1, and a ratio of a / n is a positive integer greater than or equal to 1. On the basis of ensuring the normal wiring function of each phase winding of the motor, the working efficiency and the torque of the motor can be effectively improved, and the copper loss and the temperature rise of the motor are reduced.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a single-wire multilayer winding distribution structure of the motor, and also relates to a high-performance motor to which the single-wire multilayer winding distribution structure is applied. Background technique [0002] In conventional motor manufacturing, the stator winding usually winds a plurality of enameled wires on each stator tooth of the motor. Since the winding slot fullness ratio of the motor is directly related to the working efficiency of the motor, however, due to the inevitable gap between the wires, the ratio of the net cross-sectional area of ​​the winding in the stator slot to the total area of ​​the stator slot (also known as the winding slot full Rate) is relatively low, according to statistics, the winding slot full rate of traditional motors is usually lower than 50%. In order to improve the slot fullness of the winding, the existing technology chooses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28H02K1/16
CPCH02K3/28H02K1/16
Inventor 王伟王庆花为李玉刚刘亚军卜言柱胡金龙程兴李升胡宜豹周建华周维张力王景瑜章恒亮刘竹园
Owner JIANGSU JUCI ELECTRICAL DRIVE TECH CO LTD