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Armature coil of rotating electrical machinery

A technology of armature winding and rotating electrical machine, applied in the field of armature winding, can solve problems such as reducing the effect of circulating current

Active Publication Date: 2013-11-20
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this patent, there are references that the variation of the voltage of each parallel circuit is within 0.4%, and the variation of the phase angle is within 0.15 degrees. The voltage variation is 0.12%, and the phase angle variation is 0 degrees. This standard also shows a high degree of balance, and the effect of reducing the circulating current is considered to be sufficient.

Method used

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  • Armature coil of rotating electrical machinery
  • Armature coil of rotating electrical machinery
  • Armature coil of rotating electrical machinery

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0085] figure 1 It is a schematic development diagram showing one phase of the armature winding of the rotating electric machine according to the first embodiment of the present invention.

[0086] Such as figure 1 As shown, an armature 11 of a rotating electrical machine has 72 slots 13 in an armature core 12 composed of laminated cores, and armature windings of a 2-pole, 3-phase, 6-parallel circuit are accommodated in the slots 13 in two layers.

[0087] The armature windings of each phase have an upper coil piece 15 housed in the slot and a lower coil piece 16 housed in the slot, and are connected in series to connect the ends of these upper and lower coil pieces 15 and 16 to each other. The connection side coil terminal 19a to the winding lead part and the opposite connection side coil terminal 19b not connected to the winding lead part on the axially opposite side are constituted.

[0088] Furthermore, the armature winding has a first phase band 17 in which the upper ...

no. 2 Embodiment approach

[0106] figure 2 It is a schematic development diagram showing one phase of the armature winding of the rotating electric machine according to the second embodiment of the present invention.

[0107] Such as figure 2 As shown, an armature 11 of a rotating electrical machine has 72 slots 13 in an armature core 12 composed of laminated cores, and armature windings of a 2-pole, 3-phase, 6-parallel circuit are accommodated in the slots 13 in two layers.

[0108] The armature windings of each phase have an upper coil piece 15 housed in the slot and a lower coil piece 16 housed in the slot, and the ends of these upper and lower coil pieces 15, 16 are connected in series to each other and connected to the The connection side coil end 19a on the winding lead part and the opposite connection side coil end 19b not connected to the winding lead part on the axially opposite side are constituted.

[0109] Furthermore, the armature winding has the first phase belt 17 in which the upper a...

no. 3 Embodiment approach

[0127] image 3 It is a schematic development diagram showing one phase of the armature winding of the rotating electric machine according to the third embodiment of the present invention.

[0128] Such as image 3 As shown, an armature 11 of a rotating electrical machine has 72 slots 13 in an armature core 12 composed of laminated cores, and armature windings of a 2-pole, 3-phase, 6-parallel circuit are accommodated in the slots 13 in two layers.

[0129] The armature windings of each phase have an upper coil piece 15 housed in the slot and a lower coil piece 16 housed in the slot, and the ends of these upper and lower coil pieces 15, 16 are connected in series to each other. The connection side coil end 19a on the winding lead part and the opposite connection side coil end 19b not connected to the winding lead part on the axially opposite side are constituted.

[0130] Furthermore, the armature winding has a first phase band 17 in which the upper and lower coil pieces 15 a...

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Abstract

A double-layer winding armature coil that is fitted into 72 three-phase two-pole slots, wherein; each of the phases has six parallel circuits that are divided into two phase belts (17,18); each of the parallel circuits consist of two coil pieces, an upper coil piece (15) and a lower coil piece (16), which are mutually and serially connected at the connecting-side coil end and the non-connecting-side coil end. The upper coil pieces of the first and fourth parallel circuits are connected, when indicating the relative positions of the upper and lower coils (15,16) within a phase belt as positions counted sequentially from the pole center, to the third, fourth, seventh and 12 th positions from the pole center, and the lower coil pieces are connected to the first, sixth, ninth and 10 th positions from the pole center; the upper and lower coil pieces (15,16) of the second and fifth parallel circuits are connected to the second, fifth, eighth and 11th positions from the pole center; the upper coil pieces of the third and sixth parallel circuits are connected to the first, sixth, ninth and 10 th positions from the pole center, and the lower coil pieces are connected to the third, fourth, seventh and 12 th positions from the pole center.

Description

technical field [0001] The present invention relates to an armature winding having six parallel circuits used in a rotating electric machine having three phases, two poles and 72 slots. Background technique [0002] In a large-capacity rotating electrical machine, armature windings are arranged in two layers of upper coil pieces and lower coil pieces in the slots provided on the laminated core, and the generated voltage is increased by connecting them in series to increase the size of the equipment. capacity. However, if the voltage of the armature wire becomes higher, the thickness of the main insulation of the armature wire becomes thicker to withstand the voltage, and as a result, the cross-sectional area of ​​the conductor portion decreases and the current density increases, resulting in an increase in loss. [0003] In addition, especially in equipment of an indirect cooling method in which the armature wire is cooled from the outside of the main insulation, the thickn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/28
CPCH02K3/28H02K3/12
Inventor 德增正藤田真史上田隆司垣内干雄
Owner KK TOSHIBA