JPH0417020B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in three-phase armature windings used in AC rotating electric machines.

Conventionally, in order to wind a 32-pole two-layer three-phase armature winding around a 36-groove fixed core, as shown in Figure 5, adjacent pole windings of the same phase were connected in sequence. Moreover, the method of storing the winding wire in the groove is such that one winding wire is placed on the upper side and the lower side in the groove.

That is, in the winding connection configuration shown in FIG.
They are arranged as shown in FIGS. 6, 7, and 8, respectively. FIG. 6 is a diagram showing one wire ring, and the wire ring 101 has one terminal connected to each side on the left and right sides, and has a total of two terminals. FIG. 7 is a diagram showing the insulating interphase paper inserted into the stator winding end, and the insulating interphase paper 102 is arranged for each slot. Furthermore, FIG. 8 is a diagram showing a phase-specific arrangement within the slot, and the coils 101 shown in FIG. 6 are arranged on one side in adjacent slots,
The relationship is between the top and bottom in the slot. Further, the insulating interlayer paper 102 shown in FIG. 7 is inserted between the wire wheels to maintain insulation between adjacent wire wheels.

However, when the above-mentioned storage method is used, the windings in the same groove are of different phases, and insulating interphase paper is inserted individually, and the windings of the same phase are continuously connected and wound. For example,
Since there are 72 connection points in 36 grooves, there are problems in that it takes a lot of time to store the windings and to make connections.

The purpose of the present invention is to improve the method for storing armature windings, to use a single piece of insulating paper, to arrange the windings of each phase in a well-balanced manner, and to connect the windings of the same phase in succession. It is an object of the present invention to provide an extremely simple and inexpensive three-phase armature winding that can reduce the number of connection points and shorten the winding storage time and connection work time.

In order to achieve the above object, in the present invention, in a two-layer three-phase armature winding that forms 32 poles on a 36-groove stator core, a coil is formed by winding the winding wire and storing it in an adjacent groove. Then, the coil group formed by continuously winding this coil in series into multiple poles is sequentially stored in the lower side of the continuous groove at coil pitch 1, and the upper side of the continuous groove after providing a predetermined number of groove intervals. The coils are sequentially housed in a coil pitch 1, and the terminals extending from both sides of the coils of each wire ring group are connected to form each phase winding.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an example of the connection configuration of three-phase armature windings according to the present invention. That is, as shown in the figure, the windings of each phase are A1 (1-2), A2 (3-
4), Each winding of A3 (5-6) is continuously formed in the working process, and when it is stored, a plurality of windings are arranged sequentially from the bottom of the groove, and after being inserted into the bottom of the groove. , move to the upper side of the groove and similarly arrange a plurality of them one after another. As a result, the insulation between the upper side and the lower side of the groove is made using a belt-shaped member having a circumferential length.

That is, FIG. 2, FIG. 3, and FIG. 4 are diagrams showing the wire ring, the insulating interlayer paper, and the arrangement of each phase in the slot, respectively. First, as shown in Figure 2,
In wire ring group A, three wire wheels A1, A2, and A3 are connected in series, and on one side of wire wheels A1 and A3,
Each terminal has a total of two terminals. Also, the third
As shown in the figure, the insulating interlayer paper 102 has a band shape. Furthermore, as shown in FIG. 4, in the phase-specific arrangement within the slot, the wire ring groups A1 to A3 shown in FIG. 2 are sequentially accommodated in the slot. That is, focusing on the U phase, they are stored below slot numbers 1 to 60, above slot numbers 10 to 15, below slot numbers 19 to 24, and above slot numbers 28 to 33, respectively. Similarly, the V phase and W phase are also accommodated as shown in FIG. Furthermore, the insulating phase paper 102 shown in FIG. 3 is inserted into the stator winding end to maintain insulation, similar to the insulator inserted between the upper and lower slots.

In the three-phase armature winding having such a configuration, insulation between the upper and lower sides of the windings of different phases in the same groove can be achieved with a single belt-shaped piece with a circumferential length, which is different from the conventional method. In comparison, the time required to insert the insulating paper can be significantly reduced. Further, adjacent different-phase windings, for example, the upper windings of groove numbers 6 and 7, or the lower windings of groove numbers 9 and 10, do not need to be insulated because of their spatial distance.

On the other hand, the arrangement of the windings for each phase is the same as the conventional one, since the upper and lower sides of the groove are arranged in the order of U phase, V phase, and W phase. There is no difference in its characteristics from the conventional one. Furthermore, in the figure A1 (1-2), A2 (3-4), A3 (5
Winding group A consisting of -6) can be formed continuously in the work process, so there are 72 connection lead wires in the conventional system shown in Fig. 5. However, in FIG. 1 according to this embodiment, the connection lead wire is only 24
It becomes a book and can be made 1/3 the size of the conventional one.
This reduces errors in the winding connection work, reduces the effects of heat, and makes it possible to form a three-phase armature winding with extremely stable quality.

As described above, in this embodiment, in a two-layer three-phase armature winding that forms 32 poles on a 36-groove stator core, the winding is wound to form a coil that is housed in an adjacent groove, A wire ring group formed by continuously winding this coil in series into multiple poles is sequentially stored under the continuous grooves with a coil pitch 1, and after a predetermined number of grooves are provided, a coil pitch is placed above the continuous grooves. 1
The windings of each phase are constructed by connecting the terminals extending from both sides of the coils of each wire ring group.

Therefore, compared to the conventional three-phase armature winding, the insulation of the adjacent different-phase windings in the same groove is much simpler and can fully perform its function, while the continuity of the windings is much simpler. By employing windings, the working time for storing the windings and the working time for making connections can be extremely shortened. Additionally, the outside of each phase winding and groove,
Since the inside is arranged in a well-balanced manner, there is no unbalance of current between each phase, and it is possible to obtain characteristics no different from conventional ones.

This makes it possible to simplify insulation and obtain a three-phase armature winding with low product cost.

It should be noted that the present invention is not limited to the above embodiments, and for example, not only the 36 grooves and 32 poles according to the above embodiments, but also 18 grooves and 16 poles, 54 grooves and 32 poles, 27 grooves and 16 poles, and 36 grooves and 16 poles.
pole, 18 grooves 8 poles, 48 grooves 16 poles, 24 grooves 8 poles, 54 grooves 16 poles,
The present invention can be similarly applied to three-phase armature windings such as 27 grooves and 8 poles.

In addition, the present invention can be modified and implemented in various ways without changing the gist thereof.

As explained above, according to the present invention, in a two-layer three-phase armature winding that forms 32 poles on a 36-groove stator core, the coil is wound to form a coil that is housed in an adjacent groove. A wire ring group formed by continuously winding this coil in series into multiple poles is sequentially stored under the continuous grooves at coil pitch 1, and at the top of the continuous grooves after providing intervals of a predetermined number of grooves. The windings for each phase are constructed by storing the coils in sequence in pitch 1 and connecting the terminals coming out from both sides of the coils of each wire ring group, thereby shortening the time for storing and connecting the windings. It is possible to provide an extremely simple, high quality, and inexpensive three-phase armature winding that is capable of

[Brief explanation of drawings]

Fig. 1 is a connection configuration diagram showing one embodiment of the three-phase armature winding according to the present invention, Fig. 2 is a diagram showing a wire ring group in the same embodiment, and Fig. 3 is a diagram showing the insulating interphase paper in the same embodiment. Fig. 5 is a connection configuration diagram showing a conventional three-phase armature winding, Fig. 6 is a diagram showing the coils in Fig. 5, Fig. 7 is a diagram showing the arrangement of each phase in the slot in Fig. This figure shows the insulating interlayer paper in FIG. 5, and FIG. 8 shows the arrangement of each phase in the slot in FIG. 5. A1, A2, A3... wire ring, 102... insulating phase paper, A... wire ring group.

Claims (1)

[Claims] 1. In a two-layer three-phase armature winding that forms 32 poles on a 36-groove stator core, the winding is wound to form a coil stored in an adjacent groove, and this coil is A group of wire rings formed by continuous winding in series into multiple poles is stored one after another with a coil pitch of 1 below the continuous grooves, and after a predetermined number of grooves have been set apart, the wire rings are sequentially wound with a coil pitch of 1 above the continuous grooves. A three-phase armature winding, characterized in that each phase winding is constructed by connecting terminals protruding from both coil sides of each wire ring group.