CN204231039U - A kind of modified generator stator - Google Patents

Abstract

The utility model discloses an improved generator stator, which comprises an iron core and a stator winding. The iron core is provided with 96 rectangular slots at equal intervals. Inner upper layer, inner lower layer, outer lower layer and outer upper layer; the stator windings are distributed in four layers, and there is a layer of insulating paper between the adjacent two layers of the four layers; the stator windings are divided into two symmetrical groups, each group consists of 6 sets of stators It is composed of flat coil groups, and the number of magnetic pole pairs of each stator flat coil group is P=8; among the 6 sets of stator flat coil groups in each group, three groups are connected with triangles at the head and tail, and the tail ends of the other three groups are respectively connected with three triangles. end-to-end connection. The stator winding is distributed in four layers, and there is a layer of insulating paper between the adjacent two layers of the four layers, that is, there are three layers of insulating paper in every four layers. The insulation between the coils is good, and the windings are connected in delta and star. The cooperation realizes orderly and compact distribution, and the full rate of the entire stator coil slot is high, which brings high output power.

Description

An Improved Generator Stator

technical field

The utility model relates to a stator structure design, in particular to an improved generator stator. the

Background technique

The generator stator disclosed in the prior art can realize compact design, high power and low noise. The stator core is equidistantly provided with 96 rectangular slots, and the stator winding is composed of a plurality of conductor segments of enamelled flat copper wires. , the conductor segments are connected to each other in different layers of different rectangular slots in order to form a winding with a high space factor and a low electrical resistance. However, no matter whether the existing stator winding adopts the star connection method or the delta connection method, the problem of too low power generation of the generator still occurs, and the insulation between the copper wires of the stator winding still has the problem of poor reliability. In view of this, the present inventor has carried out in-depth research to the stator of generator, and this case arises thus. the

Utility model content

The purpose of the utility model is to provide an improved generator stator, which has the characteristics of compact structure, good insulation of flat copper wires and high output power. the

In order to achieve the above object, the solution of the utility model is:

An improved generator stator, including an iron core and a stator winding wound on the iron core, 96 rectangular slots are equally spaced on the iron core, and each rectangular slot is formed according to the radial direction of the iron core. From the inside to the outside, it is divided into inner upper layer, inner lower layer, outer lower layer and outer upper layer; the stator winding is distributed in four layers, and a layer of insulating paper is arranged between the adjacent two layers of the four layers; the stator winding is divided into symmetrical Two groups, each group is composed of 6 sets of stator flat coil groups, and the number of magnetic pole pairs of each group of stator flat coil groups is P=8; among the 6 groups of stator flat coil groups in each group, three groups of head and tail triangles are connected, The tail ends of the other three groups are respectively connected to the three head-to-tail joints of the triangle. the

After adopting the above scheme, the beneficial effect of the new model compared with the prior art is that the flat wire stator of the new generator has 96 slots, the stator windings are distributed in four layers, and a layer of insulating paper is arranged between adjacent two layers of the four layers. That is to say, there are three layers of insulating paper sandwiched in every four layers, and the insulation between each coil is good. The winding adopts the combination of delta and star connection to realize orderly and compact distribution. The full rate of the entire stator coil slot is high, which brings high output. power. the

Description of drawings

Fig. 1 is a schematic diagram of the iron core structure of the novel flat wire stator;

Fig. 2 is a schematic diagram of the novel upper and lower coils straddling the iron core;

Fig. 3 is a side view of the novel stator;

Fig. 4 is a schematic diagram of partial winding of the new single-phase one-coil group corresponding to the upper and lower coils;

Fig. 5 is a schematic diagram of winding part of the stator winding of the present invention. the

Label description

Iron Core 1 Rectangular Slot 10

Inner upper layer 101 Inner lower layer 102

Lower outer layer 103 Upper outer layer 104

Stator coils 2 lower coils 21

Upper coil 22 Winding lead wire 23

Detailed ways

The present case will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. the

This case involves an improved generator stator, as shown in Figure 1-5, which mainly includes an iron core 1 and a stator winding 2 wound on the iron core 1. the

As shown in Figure 1, 96 rectangular slots 10 are provided at equal intervals on the iron core 1, and a slot insulating paper (not shown in the figure) matching the rectangular slot 10 is laid along its rectangular slot wall in each rectangular slot 10. marked). As shown in Figure 2, it is assumed that each rectangular slot 10 is divided into four layers according to the arrangement of the stator coils 2 therein, which are the inner upper layer 101, the inner lower layer 102, the outer The lower layer 103 and the outer upper layer 104 . Corresponding to the four-layer design, the stator winding 2 is distributed in four layers. As shown in Figure 3, a layer of insulating paper 3 is provided between two adjacent layers of the four layers, that is, three layers of layers are sandwiched between the four-layer coils. Insulating paper 3, that is, use a layer of insulating paper 3 to separate adjacent two layers of enameled wire coils, so as to avoid the possibility of burning the coil enameled layer during welding and causing breakdown between turns or phases of the stator, so as to ensure the excellent quality of the stator coil work performance. the

Figure 4-5 shows the winding design of the stator winding 2. The stator winding 2 is divided into two symmetrical groups, and each group is composed of 6 sets of stator flat coil groups. The coil group is a single coil group, correspondingly distributed in each corresponding 16 rectangular slots, including 7 upper layer coils 21 , 8 lower layer coils 22 and 2 winding lead-out wires 23 . The schematic diagram of each corresponding iron core rectangular slot number in the new three-phase winding is as follows:

As shown in Fig. 2 and Fig. 4, the pitch of the lower coil 21 is 6, which is a stacked coil between the inner lower layer 102 and the outer lower layer 103 of the two rectangular slots; the pitch of the upper coil 22 is 6, which is A wave-wound coil straddling the inner upper layer 101 and the outer upper layer 104 of the two rectangular slots. As shown in Figure 5, after the phase coils are connected in series according to the above-mentioned rules, the corresponding head and tail ends each lead to a winding lead-out line 23. Among the 6 sets of stator flat coil groups in each group, three groups of the head and tail are connected in a triangle, and in addition The tail ends of the three groups are respectively connected to the three head-to-tail connections of the triangle, that is, the three connection nodes C, D, and E in Fig. 5 are formed, and the head ends (A, B, F) of the other three groups are drawn out as winding lead-out lines . the

The above descriptions are only preferred embodiments of the present invention, and all equal changes and modifications made in accordance with the claims of the present invention shall fall within the scope of the claims of the present invention. the

Claims (1)

1. An improved generator stator, comprising an iron core and a stator winding wound on the iron core, characterized in that: the iron core is equidistantly provided with 96 rectangular slots, and each rectangular slot is as described The radial direction of the iron core is divided into inner upper layer, inner lower layer, outer lower layer and outer upper layer sequentially from inside to outside; the stator winding is distributed in four layers, and a layer of insulating paper is arranged between adjacent two layers of the four layers; The stator windings are divided into two groups of symmetry, and each group is composed of 6 sets of stator flat coil groups, and the number of magnetic pole pairs of each set of stator flat coil groups is P=8; among the 6 sets of stator flat coil groups in each group, three of them The triangles at the head and tail of one group are connected, and the tails of the other three groups are respectively connected with the three connecting points of the triangles at the head and tail.