JPS5953048A - 3-phase armature coil - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to improvements in three-phase armature windings used in AC rotating electric machines.

[Technique of invention++lii background]

In a three-phase AC rotating electrical machine, a convex strip is provided along the circumference of the armature core, and the armature is wound around it. There are many ways of winding the armature winding, but in conventional 34-way AC rotary city machines, the 2J winding method was often adopted.

However, the -i4!I-Nj winding method is often adopted in multi-pole near +12 (4-way rotary type).The reason for this is that, as mentioned above, in the Physiology in creation of windings such as reduction of image, reduction of connection points between coil A1.I TJt, ease of edge to coil 14, ease of storage in slot This is because you can improve your performance.

Furthermore, there are fractional slot winding and integer slot winding in the winding method for electric (f tatami winding, 14).In other words, 1F5 (
・iji, 'The number of slots q of m phase is Q''= m-4
-'% (where 1 is an irreducible non-a) is a fractional slot winding, while a case where q=m is expressed is a 1≦unslot winding.

0 [1 Fractional slot winding has a narrower range of parallel circuits than integer slot winding, but 4 = number of...J11
Since it is possible to select a slot JAM for each phase per phase that is not double,
If the rating of the rotary wheel leg is given, a large amount of design freedom I■ can be taken. Furthermore, it is possible to reduce distortion of the dielectric waveform caused by the slot wave. Therefore, up to the previous z:s L/ta 41+, ij case,
Times +1! For i<7ff machines, upper 819 minutes 11
Attack slot volumes are often used.

The present invention relates to %-% of the above H1], 9 cases, specifically: 30 slots 4 small II rice, 42 slots 4
(1 permanent, 45 slots (5 pins, 60 slots 8 poles, 90
Applies to three-phase types such as 12 slot slot poles, 63 slot 6 poles, etc., and <9° child windings.

(Tonoyo) will explain an example of a three-phase-i machine I winding with single-layer gold 1' winding and fractional slot winding using drawings.

That is, 1゛1λ11・'Iζ3L, 45 slot 6
The state of the three-phase 'F of one wheel is ',']'i! (j) l
This is a 1VH open connection diagram, and in this case, the number of switches q for each pole and each phase is q = 2 + 4 - (n = 1). t+
, V, and W, for example U4]], then the first coil (for example, coil U) formed by one coil (n=1') and the two A second group of coils (for example, coils U2 and U8) in which coils are wound concentrically in series are arranged adjacent to each other alternately on the circumference of the armature core. And the arrangement 1111 ru l (Ul r 2 y
U3 + U4 .

Other v 4th, w phase also upper 1, 111th similar to L″1
It is complete.

However, the lead wire to the outside of the ■phase should be connected to the above U-phase coil U1.
Connect to coils that are 120 degrees apart in phase in terms of electrical angle,
This file is set as vl.

Note that the creeping electrical angle here is one magnetic pole pitch (360°/
It is an angle expressed with the number of poles) as 180°. For example, in Fig. 1, the distance between 1 slot is 24°, and the total circumference is 180°.
It becomes 080°. Furthermore, W-phase drawer 1 (“d is 240” electrical angle higher than the above coil U1) fl! : Connected to a coil that has been removed. Then, the terminals of each phase are connected in 11 rows every 7F (the terminals of the coils U, V, W are x, y, and z).

and each 1'fl (U, V, W) is l'r;il
Internal details of the coil group 2 to the adjacent I"1' Since the coils 1 share one of the slots, the tolerance of the coils is set to about half that of the other coils.

[・Background technology; ■5 points] However, as mentioned above, the three-phase armature winding made in (1) had the following problems.

If the terminals x, y, and z of each phase in the Zunawaji and Melo 1 diagram are Y-connected, the coil 11111 of the second coil group (
u, ) Ue l U9 g U3 + U
1i of 6 + VOpW3g Wal W9)
iii 1t11! Both the coil side and the coil side are placed in the same slot as the 4th coil side, although they are different.
It is necessary to insert an insulator between the sides of each coil in the slot to strengthen the insulation between the coils.

Figure 2 shows three-phase alternating current with a source voltage EO of 111 from the lead wires of each phase (U, V, W), and X, Y, and Z connected in a Y-connection. ifi to reduce the 1n position difference between the coil phase and the roof tiles by 21! , which is a distribution map. However, the diagonal M'l in the figure! As mentioned above, in the coil shown by , the length of the coil 9 is approximately half that of the other coils, so the potential difference between both ends of the coil is also calculated as half of that of the coil.

ij If, the voltage is 1 and 0, and the Y-connection is now - Aoishi l
, the heavy bodies are at 120 degrees, indicated by A and B, respectively.
is calculated using a geometric method as shown in FIG. 3, and becomes the following equation.

For example, U-phase coil U6 housed in slot No. 24 (!: 111 between W-phase coil W3);
Position 7'li': E 24 is the shaded coil Us
t UQ +w, , w6 , both jffia of WS
Since the potential difference of ' is half that of other coils, = -0.57F;

Tonai).

Table 1 shows the potential difference E between the coils in all the slots in which two coils having different phases are housed.

As shown in Table 1, No. 1::j□f:, the maximum W between the coils of different sizes, Ii is i, +1', 12'A 'i:
Alt Yul: Add 7 to 0.734B of o. As a result, when storing co and il of different types in the same slot, as in 1lfJ nod:, special +d',
It is necessary to insert the edge 'I>/l and acclimatize the i rudder (child) between the fill super Ei. Therefore, the work of storing the fill in the skit - 1st officer [・self! 1jlJ] It became difficult and the storage work time was reduced.
, +゛iJ was added))).

[Object of the invention j The present invention was made based on the above circumstances,
The purpose of this is to calculate the potential between two coils housed in the same slot, 11" zrk "'・i':
, :r, by reducing the top to ++ between the locoils
[..., to make the binding process easier, 1.゛Cause ÷
・The purpose is to provide three 4'l'l' Hi Ryozi windings that can be used at a cost o) i + sa, in, table 1 s 1 r).

[Answering 41 of 4 Ming] In order to achieve the above purpose, the three-phase L
f'+, add a child to +, and add shi to 11 as follows! ;It is characterized by what has been achieved.

If '4 &'m phase slot number q
q=m+6. In the three-phase military machine winding of the outer machine slot winding expressed as (m; a random number of 2 or more),
Connect the lead wires of each phase to the outside γ and IS to the first coil of the number! a first coil group that is used as a reference among jF;
They are placed at positions having a phase difference of 240" and 480 degrees in electrical angle with respect to this first coil group. [Invention', :'4 J1+Example] Fig. 4 It, ,;E!;a is a three-phase 11°C situation related to 16 examples of Ming's ability.It is a development 1 concubinage diagram of Volume 5.

This real hili I:'ll-,'F-A'll I
I-Is the white shikoko-maki honge back the same as the above-mentioned promotion? lkA
Similarly, it has 45 slots and 6 poles, and is a famous slot machine.
The coils housed in 1 to 45 are also arranged in the same manner as the conventional winding shown in Fig. a'↓1. However, the external lead wires of each phase (U, V, W) are connected as follows. That is, the winding start m' of the coil U, which is based on the U-phase lead wire, is
ift (slot Nα1), and drawer 1 of phase ■
The winding start position of the coil whose phase is 480 degrees (20 slots apart) from the coil Ut is 1 meter (
slot No. 21), and this coil is set as vl. In addition, the W-phase drawer is the coil U as in Fig. 1, and the coil W1 is located 240 degrees apart in electrical angle from the coil W1 at its starting position (thrower) Nα11)? This contact is R.

Then, each phase (1), v, w) '1. jf
%Af4 connected in series to
, Vo t Wo's y; 15 end is x, y, z
It is said that

In this way, the third Ame city-like winding of f, f implantation has a phase shift of - (U).

V, W) 0) +':iA end'a2 Y Q
11jN (!: L/, each Af4 (Up ” r
W) from drawer 4'-1'', E.

When a three-phase alternating current is applied, the position distribution of the first position is L
1↓5 l-/]. Next, 1 in figure 7132
The following example and the turn measurement (by the r method (r: rl, the coil (eye') in the slot containing two coils with different jils)
E1. If we calculate the difference E between t and t, we will get something like the table X2.

As shown in Table 2, the maximum voltage between the four different-phase coils in the same slot is ゛Itt source voltage E.o) 0.57 (r
Since the maximum stress of the conventional winding shown in Figure 2 of Mul'2 was 0673 times E., the maximum voltage can be reduced by more than 2001+ compared to the conventional one.

As mentioned above, each 4t+ (U, V,
w ) outside t (l ≦ drawer evening,! 4g8 ulI
L, 'r1. The positions of the coils are shifted from each other so that the coils at the direct white U position are not arranged in the same slot.

Shitakatsude, above)! 11, the maximum voltage between the coils can be lowered compared to that of the conventional coil, so the dielectric strength IF between the fillers 11 in the slot can be lowered. Therefore, the insulation treatment must be done! By simplifying step 6, it is also possible to reduce the work of storing the coils in the slots, and in the end, it is possible to reduce the amount of time it takes to build a three-phase armature. Enter with.

Pi! Figure 6 kl G 3 S [1t 6-pole three-phase Ti
The state of the winding is shown in Figure 5, and in this case,
Slots A' to 114J', -q"" 3
+ 4- (n = l). Therefore, each pole has two coils that do not share a slot;
1′! A second coil IL (") having two coils sharing a part of the slot with the first coil group is formed as a second coil IL ("). V, W) drawer: 3:+; to the coil U1 of the first coil 1f-
4800 and 240 degrees electrical angle are connected to 1i'ij (7)': J, B/V, and W1, respectively. How to connect 4 coils to each other [?
It is the same as the real Jrtji example of iJ fi12.

In this embodiment, the coil Nn sharing the slot
are U4 − U8, UI2 + v, v,
TV+2, W4 J Ws * W12 'T
! Al. 6. Make a power supply box pressure circle using the same method as in the embodiment shown in Fig. 5 by dividing the vertical position difference between both ends of the coil into half of the other coils. If we calculate the frost level difference between each coil in the case of

43 Table 3-J, %? 1-2r As usual, the Jl・1 large voltage between different phase coils in the same slot is 'b source 111
．． Pressure E. (1) 0.56 times, and the second. The power output was equivalent to or better than that of the embodiment shown in I.

[Effect of the invention 1 As explained above, according to the present invention, a three-phase 'Flj' winding with 9 slots is wound) 1'' in 11!''6
Since the 1st drawer to the outside is connected to the 1st coil group of the same configuration, which is placed at a position shifted by 240 degrees in electrical angle, the coils are housed in the same slot size. 51 from the connecting point of the Y crystal 1 of the coils with different phases
By shifting the L positions from each other, it is possible to prevent the coils at positions 1'l'6'It from being located within the same thrower I. Therefore, the potential j6 between the coils can be kept low, so that the coils 411i, 1-i
219 edge processing of l, and eventually three-phase Iλ
Manufacturing of machine windings I! (can be reduced).

Furthermore, in the present invention, since the second coil group that shares the slot is tangentially connected to the first coil F that does not share the slot, on average, it is closer to the Y junction point.
1'22: Coil group Y 7h average from 100: (
;'I'm going to make Jin lie down. Therefore, the above coil +14
Between M (, I)'(', (the phase difference can be further lowered, nf
, +Improve the effectiveness of your statements.

[Brief explanation of the drawing]

Figure 1 shows the conventional three-phase turtle;
The figure is a potential distribution diagram for the same winding number, FIG. The development diagram of the three-phase 'formation 4D wire network,;
FIG. 6 is a connection development diagram of a three-phase I-DO winding shaft according to another embodiment of the present invention. Ul * Utr..., U, 2... U phase coil, v, , v, , -, v, 2-
v O-eye coil, WI. W2,..., W, 2...W phase coil.

Claims (1)

[Claims] (11) A first coil group consisting of one or more coils that do not share a slot with coils having different phases;
4f! A second coil group consisting of one or more coils that share some slots together with coils of different phases are mutually arranged, and the number of slots q for each pole and each phase is q=!
Three-phase 'if' expressed as n0% (m; a natural number of 2 or more)
In the t machine wire, the 1-8 phase lead wire taken out to the outside is used as a reference for one of the first coil groups of r7ψ number, and this ε+S 1 coil group. The Sanwa electric coil is connected to two other first coil groups which are arranged at positions having a phase difference of 240' and 480 degrees in electrical angle. Child winding i -0 (21i'+il rhyming period 1 coil group and second coil group are each pole in each O-th slot t,'+i q is Q=
21+3A (n: natural number), the patent R'? is composed of n and (n + 1) 1+'il coils, respectively. J's request:
11) Three-phase 1 described in item (1) (Isogo winding. (3) The first coil group and the second coil 1
The number of slots q for each pole and each phase is q = 2 n+
When expressed as 10% (n; natural number), each (n
+1) Three-phase electric power for MiJ battle, Kaikomaki+
ijd.