JPS61278112A - Winding for stationary induction electric apparatus - Google Patents

Abstract

PURPOSE:To equalize electromagnetic force in the left and right radial directions, and to prevent the deformation of a low-voltage winding by forming a dislocation section so as to generate electromagnetic force approximately the same as electromagnetic force in the radial direction of the lead wire side on the low-voltage winding side on the side reverse to a dislocation section. CONSTITUTION:In a low-voltage winding 8, dislocation sections 22A, 22B are shaped to a right coil section 11A and a left coil section 11B. The size of the dislocation sections 22A, 22B are formed so that electromagnetic force PHL in the left and right radial directions is brought to approximately equal magnitude. Electromagnetic force PHL(PHH) in the radial direction and electromagnetic force PHL'(PHH') are approximately the same in electromagnetic force generated when currents are flowed through the low-voltage winding 8 and a high-voltage winding 7. Accordingly, the low-voltage winding 8 is difficult to be deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a static induction electrical winding, which is an improved low voltage winding, particularly for a vehicle transformer.

[Background of the invention]

FIG. 4 shows a conventional vehicle transformer, in which an outer iron core 4 is placed inside a tank 1 with insulating spacers 2 and 3 interposed therebetween. As shown in FIG. 5, the outer iron type iron core 4 has a central leg 4A and side legs 4B disposed on both sides thereof, and the two legs are connected by a yoke 4C to constitute the iron core 4. The rectangular winding 5 attached to the central leg 4A is formed by alternately stacking an insulating plate 6, a high voltage winding 7, and a low voltage winding 8. As shown in FIG. 6(A), the high voltage and low voltage windings 7 and 8 have a low voltage winding side with a zero output wire 10 from which a lead wire 9 and 10 are drawn out on one side, and a right coil portion 11A, The low-voltage winding side opposite to this is referred to as a left coil portion 11B.

As shown in FIGS. 7(A) and 7(B), the low voltage winding 8 has a lead wire 10 with five parallel conductors 10A and IOA' in the upper and lower stages.
are formed by stacking them in two stages and winding them, but during the formation, transposition is performed in the right coil part 11A to form a transposition part 12. As shown in the same figure (C), the transposed part 12 has five parallel conductors 10
A. Twist the IOB and dislocate it as shown in the same figure (D). Therefore, when the dislocation portion 12 is formed, the conductors 10A and IOB protrude through the insulating spacer 13 in the direction of the lead wire, as shown in FIG. Therefore, as shown in FIG. 6(A), the right coil portion 11A has a width equal to the dislocation dimension m due to the dislocation portion 12 and the width dimension a due to the lead line 10.
This means that it is formed larger than the width dimension of B. In other words, while the width dimension of the left coil portion 11B is t,
The dimensions of the right coil portion 11A are t+m+Q.

When current is applied to the high-voltage winding 7 and the low-voltage winding 8 in this state, the current 149 iII flows in the opposite direction, and the direction of the current becomes as indicated by O as shown in FIG. ? ii
The magnetomotive force distribution AT of the winding is (C) in the axial direction and (C) in the radial direction.
D), and the size at that time is β.

The direction of the electromagnetic force generated in the winding from the resulting leakage magnetic flux, indicated by γ, is in the axial direction P as indicated by the arrow in the figure. ,P□
and radial direction (P+=L-Pmm). The axial electromagnetic forces PvL and PvII are generated in the main coil portion 11B in which the high and low voltage windings 7 and 8 have the same external shape, as shown in FIG.
On the sides, the axial magnetomotive forces almost completely cancel each other out, so that no radial electromagnetic forces occur or are very small. However, for the radial electromagnetic force P□, the fourth
As shown in the figure, since no external support could be provided and only the iron core 4 was supported, there was a risk that the low voltage coil 8 in particular would be pulled toward the exit side and deformed. Incidentally, related windings of this type include, for example, JP-A-47-26618, JP-A-52-116862, and JP-A-57-16.
Publication No. 7611 is cited.

[Purpose of the invention]

An object of the present invention is to provide a stationary induction electric appliance winding in which the radial electromagnetic force on the lead wire side is reduced to prevent deformation of the low voltage winding.

[Summary of the invention]

In the winding of the present invention, if the transposed part is formed so as to generate an electromagnetic force approximately equal to the radial electromagnetic force on the lead wire side on the low-voltage winding side opposite to the transposed part, the left and right radial electromagnetic The forces become equal and deformation of the low voltage winding can be prevented.

[Embodiments of the invention]

Embodiments of the present invention will be described below using a vehicle winding shown in FIG. 1(A).

The low voltage winding 8 includes a right coil portion 11A and a left coil portion 11.
Dislocation portions 22A and 22B are formed at B.

The sizes of the dislocation portions 22A and 22B are formed so that the electromagnetic forces PIIL in the left and right radial directions are approximately equal in size. Also, in place of one of the dislocation parts 22B, as shown in FIG.
intervene. The insulating spacer 23 is adjusted so as to generate an electromagnetic force of approximately the same magnitude as the radial electromagnetic force generated at the dislocation portion 22A.

Next, the electromagnetic force generated when current is passed through the low-voltage winding 8 and the high-voltage winding 7 is shown in (B) and (C) in the same figure.

As shown in (D), the radial electromagnetic force PIL (P□)
and the electromagnetic forces P, L'(Pfi,') are almost equal. Therefore, the low voltage winding 8 is difficult to deform, and therefore,
If the low voltage winding 8 of the present invention is used as shown in FIG.
Since the side dimensions can be reduced by the amount of one transposed portion 22, the transformer can be made smaller.

Furthermore, dividing into dislocation parts 22A and 22B means that if the conventional electromagnetic force pH & in FIG. It can be done. As a result 1, the mechanical strength of the low voltage winding 8 of the present invention is only about half that of the conventional one, and the conductor constituting the winding may be made of annealed copper wire, or the mechanical strength of the face to which the conductor is fixed may be reduced. does not need to be very strong, improving workability.

Further, in the above-described embodiment, the dislocation portion 23 shown in FIG. 1 only needs to be dislocated during the winding of the conductor, and the winding operation can be performed continuously, so that the work efficiency can be improved. In FIG. 2, by using the insulating spacer 23,
Reduces the amount of conductor used.

Furthermore, in this embodiment, as shown in FIG. 3(A), one of the transposed portions 22A is located between the inside and outside of the right coil IIA, so the number of turns N is N uni N. In a relationship. However, since the other transposition position 22B is half a turn from the winding start conductor 111A of the right coil IIA,
The number of turns N between the transposed part 22B and the inside and outside of the left coil 11B is, for example, N1' = 4.5 turns, N,'
= 5.5 turns, and there is a possibility that circulating current may flow.

Therefore, as a specific example, the number of windings is 10 turns, and the number of parallel conductors is 6.
(2 stages) and the number of dislocations of six times is assumed to be two times at the dislocation position 22A and four times at the dislocation position 22B, and will be explained with reference to FIGS. The figure (B) shows the low voltage winding left side 11B, which is wound with 10 turns like IOA to IOJ. By dislocating the dislocation position 22B to 22B' and 22B', two of the four dislocations occur at the dislocation position 22B with respect to the conductor 2-hole, as shown in Figure (C).
'(IOE, 4.5 turns), and the remaining two times were performed at the conductor opening, hole, chi, and ri at the dislocation part 922B' (IOF, 5 turns).
．． If the number of windings is 5 turns, which is half of the 10 turns, there will be -0, 5 turns, +O, and S turns, respectively, and the circulating current can be canceled out. That is,
Circulating current can be offset by making approximately half of the number of turns made in the dislocation portion 1122B minus 0.5 turns and the remaining half plus 0.5 turns relative to the number of turns of 172.

〔Effect of the invention〕

As described above, the transformer winding of the present invention prevents deformation of the low-voltage winding, thereby making it possible to downsize the transformer.

[Brief explanation of drawings]

FIG. 1 (A) is a plan view of a vehicle transformer winding shown as an embodiment of the present invention, and FIG. 1 (CB) is a sectional view taken along lines A-A and B-B in FIG. (C) and (D) are axial and radial ampere-turn AT characteristics diagrams of (B), and FIG. 2 is a plane view of a vehicle transformer winding shown as another embodiment of the present invention. Figure 3 (A) is a plan view of the vehicle transformer winding similar to Figure 1, and Figures (B) and (C) are the same figure (
A) Main part diagram, Figure 4 is a side sectional view of a conventional vehicle transformer,
Figure S is a side sectional view and side view of the vicinity of the iron core stored in Figure 4,
Figures (C) and (D) are axial and radial ampere turn AT characteristics of Figure (B), and Figure 7 (A) is a perspective view of the conductor used in Figure 6 (A). , CB in the same figure is a layout diagram of (A) in the same figure. (C) is an explanatory diagram showing the dislocation of the same figure (B), the same figure (D) is a layout diagram when the same figure CB) is transposed, and the same figure 1 (E) is an explanation of the same figure (D). be. , to 10...Conductor, 7...High voltage winding, 8...Low voltage winding, 10...Lead wire, 22A, 22B...Transposition part, 2
3...Insulating spacer.

Claims (1)

[Claims] 1. A conductor is wound to form a high voltage winding and a low voltage winding,
A plurality of high-voltage windings and low-voltage windings are stacked alternately with insulators in between, and in a winding with a transposed part formed on one side of the low-voltage winding, a transposed part is formed on the low-voltage winding side opposite to the transposed part. A stationary induction electric appliance winding characterized in that the winding area is increased so as to generate an electromagnetic force approximately equal to a radial electromagnetic force. 2. The stationary induction electric appliance winding according to claim 1, characterized in that a transposed part having the same size as the lead wire dislocation part is formed on the low voltage winding side opposite to the lead wire. 3. The static induction electric appliance winding according to claim 1, characterized in that an insulating part having the same area as the lead wire transposition part is interposed between the conductors on the low voltage winding side opposite to the lead wire. . 4. The transposition part on the opposite low voltage winding side is 1/2 between the inner coil and the intermediate coil and between the intermediate coil and the outer coil.
The stationary induction electric device winding according to claim 1, characterized in that two windings are formed.