JPS5953047A - 3-phase armature coil - Google Patents

Abstract

PURPOSE:To shorten the connecting work of a 3-phase armature coil and to facilitate the insulation of the coil ends by continuously forming a plurality of coils concentrically and without cutting a conductor to form a coil group and reducing the connecting positions between the coils. CONSTITUTION:A coil A1 to be contained in slots 1, 4 is formed of a conductor, and a coil A2 to be contained in slots 2, 3 are continuously formed without cutting the condutor. The coils A1, A2 are respectively contained in the slots 1, 4 and 2, 3 in such a manner that one coil is inverted. The coil side which is disposed at the outermost end of the coil group U1 formed of the coils A1, A2, i.e., at the outermost end of the coil group W4 of the same structure adjacent to the coil group U1 is contained in the slot 4. Other coil group is provided adjacently in the similar method. A power terminal is connected to the open ends U, V, W of the respective coil groups, and the open ends X, Y, Z are coupled in a Y-connection.

Description

[Detailed Description of the Invention] [Field of Field of Invention] The present invention relates to a positive-phase rotor winding force α used in a father-flow rotating shaft.Technical Background of the Invention ] In general, AC rotating parts are eliminated! 7.1 Gunjo + Sebo C-.

Increase the design force level when the rating is determined. For the purpose of suppressing or eliminating harmonic waves. fF number of slots are purchased and the layered winding structure is many. 14, fractional slot volume <4, 4]
3: (Set {fj: The number of 4th cut slots q is q=a+c/
b (a, b, c: firefly e・
c/'b ; irreducible fraction) 'JO anti-C- (own)
The temperature is high on the 10-street line, where there are a large number of applicants. In some cases, {1['' of the number q of the first Caslot in the v yoyu toggle above becomes smaller than <7.4 as shown in the following formula. Among the windings, the three-phase armature winding C2 whose number of slots q is represented by, for example.

36 slots'r 32h (n=t), Js slot tblIilIc n=t), so slot 28
T! 1ii (n = 2), 42 slots ao (!
There are winding methods such as 1ll (n = , q ) ◎ Among these, the solid foot core f 22-layer winding 32 poles with 36 slots (n = l, q =, ?//8) (
Figure 1 shows a connection development diagram when winding a 7JE phase electric winding.

As shown in Figure 11, a pair of slots that are in contact with IS*,
Fortunately, the 56 unit coils are arranged consecutively so that the slots accommodating the coil sides adjacent to each other are shared. Inside the slot (2. The other side is placed outside the slot. As shown in Fig. - Next, connect one end of the connected 3-phase coil (X, Y, Z) and connect the power terminal to the other end (TJ, V, W) to form a 3-phase small bubble winding. ◎ [Nine points in the background art] However, from the engineering, there was a problem such as the three-phase armature winding with the above-mentioned ζ-configuration. Because the unit coils are not arranged in instantaneous contact, a coil must be formed for each unit coil, so there will be no C fluctuation.Also, each unit coil is connected separately by 1 unit, so each unit coil phase For example, in the case of a three-phase armature winding in which the stator core C with 36 slots in FIG.

Therefore, there are 33 interpole connection points.

In the manufacturing process of the same winding (-), there is a problem that the time required to connect the unit coils becomes longer and the manufacturing cost of the three-phase armature winding 17J increases. Since the two coil sides have different phases from each other, the insulation process is complicated, the work time for accommodating the coil in the slot is long, and the manufacturing cost of the three-phase armature winding is further increased. [Objective of the Invention] The present invention has been made based on the above-mentioned circumstances≦2, and its purpose is to reduce the electromagnetic balance of the windings of each phase. Connection between each coil instead?,!I'iPl
The object of the present invention is to provide a three-phase armature winding that can reduce (1) and reduce phase separation (i), and as a result, shorten the opening force during manufacturing and reduce manufacturing costs. ] In order to achieve the above object, the three-phase armature winding of the present invention (C21) is a coil group formed by concentrically winding (n+1) coils (two embedded windings) for each of the three phases. - P per phase /
(6n + t) CP; End with 3 poles, I!
The above-mentioned coil groups are arranged so that some of the coil sides of the above-mentioned coil groups of different phases share the same slot. ◎ [Embodiment of the invention] Figure 2 is from this book. This is an expanded connection diagram of a three-phase armature winding according to one embodiment of the invention +; Ill Im, and FIG. 3 is a layout diagram showing the arrangement state of the winding in slot C2. C, similar to the conventional example.

36 slots 32 poles (n = t, q = 3/8
) It forms a three-phase armature winding of 445M.
The coil AJ accommodated in C slot 2.4 is molded from one conductor, and the coil A2 accommodated in C slot 2.3 is continuously formed without cutting the above conductor.Then, each of the above coils AJJ
A2 in slot lI4 and slot 2.3 respectively
In this case, by inverting and accommodating the coil A7. The (2) property of AZ is set so that 20,000 times ≦ 2 such a coil At is adjacent to the coil group LIJ at the outermost end of the coil group JKI consisting of 2, that is, within the slot 4. It also accommodates the outermost coil side of the coil group W4 having the same -ta configuration as the coil group IJt. Coil group V7 is installed in contact with coil group Wit in a similar manner, and further.

Slot No. 0 to Slot, 76 output J: Il- structure 5y, (7J coil group, U2.W), ν2, U
,? , W2.

V3. Ul, W3. Arranged in the order of v4 ◎Each coil group IJI-IJ4, v7-V4o and W7-W4
are connected to two tooth rows C in the order of vertical numbers, and each coil group [J7. V), the open end of W7 (Ll.

A gravity terminal is connected to each coil group U4. ν4, W 40v open end (X, Y, Z) is Y
wired.

Also, the arrangement of each coil side in the slot of the stator core is as follows:
As shown in FIG. 3, slots i, 4, 7, 10, . ....

In 31.34, two OJ on both sides of each coil A7
The coil side OJ-10 is located inside the slot C2, and the other side is located outside the slot.

However, in the figure, 00 ports and △ are three-phase inverters.

ゞ, open the W phase. indicates that the paper was wound from the back side to the front side, and X indicates that it was wound from the front side to the back side.

The number of turns of the '6 coil A2 is set to be greater than the number of turns of A7, so that the total number of turns of each phase is equal to that of the first conventional example.

If the three-phase armature winding has such a configuration.

Coil A7 of the coil group. Because the coil A2tx and # wire are continuously wound without cutting.

An example of how it is possible to reduce the number of connection points between each coil is that in Example 2, there are 9 connection points for poles 1i and iJ, compared to 33 connection points for poles 1i and iJ in No. 112.10J. Comparatively, it can be reduced to nearly 1/4〇 Therefore, the coil jχ continuation time can be significantly shortened (2 shortened), and incorrect connections can also be reduced, reducing manufacturing costs. , reliability can be achieved as above.

In addition, with such a configuration, the arrangement of the windings of each phase that are momentarily connected to each other is such that the U phase, V phase, W phase, and J1 phase are well arranged, and the position of each phase winding in the slot is The conditions are exactly the same. This can be confirmed from the pressure vector diagram shown in Fig. 4.In other words, Fig. 4 shows the case where the three-phase armature winding of the above structure is installed in an AC rotating heavy machine. The restraining vehicle pressure cabertle exerted by the coil side f of each coil of the wire is expressed in degrees Celsius using the slot number.

As can be understood from the figure, the vector sum of each phase of f2 is completely point symmetrical.In the past, the Kameyama balance of each phase winding is similar to that of the small to conventional cases, as shown in Figure 1. □ In addition, the winding coefficient, which indicates the unique content of each harmonic component and subharmonic component for the fundamental component ≦ 2 of the voltage waveform induced in each phase of the armature winding, is Two 36-slot, 324!11-force Example C (not shown in Figure 2) were used. Table 1 shows 32 poles and 16? lX force 8 wires θq + pair of winding coefficients,
The winding coefficient for an 8-pole, 4th-order C is shown in FIG. 1 as a comparison with the conventional example.

From Table 1, there are 32 poles in the example.

The winding coefficient for the 16th order fundamental waveform C2 was reduced to the conventional 0.83.
Adding J from 12 to 0.9452 is 1J meeting. Therefore, the three force wave force components other than the basic 7Bl included in the hypothetical pressure form induced in each phase can be relatively reduced, and finally several ``pressure pump forms'' can be set.

Furthermore, the torque-slip characteristics of the motor were determined while the three-phase armature winding of the example was used for a month. The results are compared with the conventional example and are shown in Fig. 5. In the conventional example torque characteristic 1', regeneration side 1
In the torque characteristics T and l2 of the example, it was possible to control the above-mentioned 8-pole parasitic torque DC (DC) and the width C of the 8-pole. ◎What is this power?

Post 1 on the T3PJ1 table. As shown, the winding coefficient of the 8-pole, 4th order of the example was changed from the conventional 0.1536 to 0.06066-\
(This is due to two factors.)

In addition, in the embodiment, the coils AI and A of the coil group
2 is continuously wound, so the length of the insulating paper wrapped around each coil is lengthened, and the position 1.2 is placed outside the slot. By covering the ends of the coil.

When accommodating two coil sides in the same slot, the coil ends can be insulated between different phases. Therefore, there is no need to prepare separate insulating paper for the different phases M (1) at the end of the coil.

It is possible to reduce material costs and shorten one working time.

In addition, in the case of a slot (-) in which only one side of the force coil is accommodated, the above-mentioned effects can be further enhanced by the force that allows insulation treatment to be performed on each coil.

Note that the present invention is not limited to the above-mentioned Embodiment C2, but is not limited to the force. In other words, the inside of 813 of the slots 1 to 36,
Part of the outer arrangement may be modified as shown in Figure 2.

U4, shi,, W, are all accommodated in the slot j+2, ・U,, V,, Wl ・U3, ν3, and W3 are housed outside (−) in the above slot. .

They may be arranged as shown in FIGS. 7 and 8. However, in Figures 7 and 81, only the parts that are different from Figure 6 are described. When using the C2 device as shown in Figures 7 and 8, the positions of each phase within the slot are not necessarily balanced.・Shiki)
Sh.

In a multi-pole machine, the influence on the unbalance caused by the unbalance of the housing position in the slot is small (-1\ upstream is not a problem. In the example, 36 slots and 32 Although the three-phase winding wire has been explained, it may be a three-phase military armature winding such as 16 poles in 1B slot, 28 poles in 30 slots, 40 poles in 42 slots, etc. [Effects of the Invention] As explained above. (-1 The present invention (-The twist is caused by the force of making multiple coils concentrically and continuously without cutting the conductor wires to form one coil group.)
- Compared to the conventional Ov armature winding C2, in which the connections between the coils are made after the coils are molded and accommodated in each slot, the number of connection points between each coil can be reduced by 18 (2). It is possible to shorten the work time for accommodating the same winding wire in the clog 1 (2) and the work time for connecting the coils.Furthermore, it is possible to easily unload the thread 1 at the end of the coil, resulting in the above effect. In addition, if the present invention is applied to a 36-slot, 32-pole three-phase heavy mechanization winding,
It is possible to significantly improve the winding coefficient of the basic magnetic pole (32 poles, 1 m) and to improve the torque characteristics.

As described above, according to the present invention, it is possible to provide a three-phase armature winding that can reduce manufacturing costs and improve reliability.

4. Diagram (Ill 0J il simple explanation) The first reason is the expanded connection diagram of a conventional three-phase military armature winding.

Figure 2 is a developed connection diagram of a three-phase winding according to an embodiment of the present invention, and Figure 3 is the arrangement of the same winding in slot C2]
Figure 4 is a medium voltage vector diagram showing the characteristics of the same winding, Figure 5 is a medium voltage vector diagram showing the characteristics of the same winding.
The figure is a torque characteristic diagram of a magnetic motor using the same winding, Figure 6.
FIGS. 7 and 8 are layout diagrams of three-phase military armature windings in slots according to other embodiments of the present invention, respectively, A7
, A2・'J(ru, TJj-[Jl, V7-U4°W 1-W 4...Coil group 111., +11.
...Torque characteristics O

Claims (1)

[Claims] (11 The number of casslots per pole and per phase is Q ” (z n +
1) / (6n + t) [n; random number] Three-phase military armature winding (2) A coil group consisting of (n+1) coils wound in two concentric C strings is Each phase of the phase P/ (6n + 7) (P, f of different phases with 3 poles and instantaneous contact) -gll coil sides of each coil group share the same slot (a Sankan single machine female wire characterized by arranging a group of coils described in -n II). Said coil # forms a group of coils (n+
(I
II side is outside the slot internal force (1ill position i!1LTQ
(3) Tomo bL
:． The number of slots per pole is q or q = 3/8 and j
l. And the range of γ &14' + il'l, which is characterized in that the number of poles P is Pg32, is the younger brother mar
Three-phase □ Middle 1 Asako winding as described in l