JPH046180Y2 - - Google Patents

Description

[Detailed explanation of the invention] In induction electric devices such as transformers, taps are provided on the windings and the connections are changed in order to maintain the secondary output voltage at a predetermined value regardless of fluctuations in the power supply voltage or load current. Achieve your goals by When the tap is changed due to the connection, a part of the winding is not energized depending on the position of the tap, and the ampere-turn distribution of both the primary and secondary windings changes, resulting in stray loss due to leakage magnetic flux. may increase, or the electromagnetic mechanical force during a short circuit may increase. It is therefore desirable to ensure that the distribution of ampere turns in both windings remains the same even when the taps are changed. For this purpose, a tap winding 2 is connected in series with the main winding 1 as shown in Fig. 1, and a number of conductors corresponding to the tap sections 3 of the winding are wound in parallel in the axial direction as shown in Fig. 2. Multi-parallel cylindrical tap windings are used. The tap winding is composed of a plurality of tap sections, each of which is formed by arranging its conductors adjacent to each other in the axial direction and winding them in a spiral shape to form a single layer of cylindrical winding. The conductor ends of each winding section are connected in series and a tapped lead wire is connected between the axial ends of the wire. Since the conductors are wound adjacent to each other in the axial direction between the winding sections and between the conductors as described above, one or more conductors of the respective winding sections are connected in series with one or more conductors spaced apart, Avoid applying large inter-winding voltages between adjacent winding sections and conductors.

Conventionally, when the number of turns of each section of a multi-parallel cylindrical tap winding is equal, it has been relatively easy to wind the tap winding in one layer as shown in FIG. However, in order to obtain an accurate secondary voltage, the number of turns of the conductor in the section may be divided into two groups, for example, as shown in FIG. 3, an arbitrary number of n turns and a section requiring n+1 turns. In this case, conventionally, as shown in FIG. 4, a layer consisting of an arbitrary number x sections of n turns,
Since the tap winding is divided into a layer consisting of an arbitrary number y of sections in one winding and a separate layer, at least the tap winding has two layers and the winding width W is increased. As a result, the windings became large and expensive. In addition, in order to make the winding height h of both layers the same, it is necessary to adjust the height by changing the height of the conductor or inserting a spacing piece between the conductors, which is troublesome and requires many man-hours to manufacture. There were some drawbacks that required it.

The present invention was developed in view of this point, and when there are two types of conductor turns in the section of the tap winding, and the difference between them is one turn, this is configured as a multi-parallel cylindrical tap winding consisting of one layer. The purpose is to provide an inexpensive induction wire. According to this invention, this object could be achieved by the following configuration. That is, the tap winding has an arbitrary number of first winding sections with an arbitrary number of turns, and an arbitrary number of second winding sections with one more turn than the arbitrary number of turns.
A winding section consisting of a winding section is helically wound to form a single-layer multi-parallel cylindrical winding wire, in which an arbitrary number of the conductors of the second winding section having one more winding are applied to the winding section. Start winding in the axial direction on one end side. Next, arrange the conductors of the first winding section adjacently in the axial direction. After winding the conductor in the second winding section, the conductor of the second winding section is further wound once on the other end of the axial winding end of the cylindrical winding.

The present invention will be explained below using figures. FIG. 5 shows a tap winding 51, which winding has an arbitrary number n of conductors.
It consists of an arbitrary number x of sections (two sections 52 and 53 in the figure) formed by winding the windings, and an arbitrary number y sections formed by winding n+ times (two sections 54 and 55 shown in the figure). and one end of each section is connected to the other end of the other section,
Taps a ₁ to a ₅ are led out from the connection points and the ends of the windings. A52-A55 indicate conductors of sections 52-55 with the same number, respectively.

FIGS. 6 and 7 are a sectional view and a front view of a multi-parallel cylindrical tap winding of an induction electric device winding according to an embodiment of the present invention. winding sections 52, 53
and the number of turns n+1 (2 in the figure)
It consists of winding sections 54 and 55. Then, conductors A55 and A54 of an arbitrary number of winding sections with one more number of turns are arranged in the axial direction and gathered at one end side of the winding, and then conductors A53 and A52 of an arbitrary number of winding sections with an arbitrary number of turns are connected to the conductor. A55,
Those conductors A5 arranged axially adjacent to A54
After the conductors A55 to A52 are wound an arbitrary number of times n, the conductors A55 and A54 of the winding sections 55 and 54, which have one more turn, are wound one more time to form one layer of cylindrical winding. Series connections between winding sections are made by connecting the conductor ends of each winding section with lead wires 61 outside the windings, and connecting tap lead wires 62 to the lead wires to connect taps _a1 to _a5 . derived. Connections between the conductors of the winding sections are made by selecting conductors of the winding sections such that a large winding shared voltage is not applied between the conductors between the winding sections.

In FIG. 7, a patch plate 71 at the end of the winding is an insulator for flattening the end surface, and it can be distributed between the windings or as shown in FIG. may be made wider (so-called irregularly shaped conductor).

By configuring as described above, a winding section with an arbitrary number of windings and a winding section with one more winding than the section can be wound in a single multi-parallel cylindrical tap instead of being wound in two layers as in the conventional method. It can be a line. Therefore, the required secondary voltage can be obtained with high accuracy, and since each tap section is distributed over the entire height of the winding, there is little change in leakage magnetic flux distribution even if the tap position is changed, resulting in a compact, compact design. Moreover, it is possible to obtain an inexpensive winding wire for an induction electric appliance.

[Brief explanation of the drawing]

Figure 1 is a wiring diagram for one phase of induction electric winding, Figure 2
The figure is a perspective view of a multi-parallel cylindrical tap winding, and FIGS. 3 and 4 are connection diagrams of tap windings having sections with different numbers of turns, respectively, and their conventional configuration diagrams,
FIG. 5, FIG. 6, and FIG. 7 are a wiring diagram, a sectional view, and a front view, respectively, of the tap winding according to the embodiment of the present invention. 52, 53, 54, 55...Tap winding section, A52, A53, A54, A55...Conductor of winding section with the same number, 62...Tap lead wire, n...Arbitrary number.

Claims (1)

[Scope of utility model registration request] The tap winding consists of a plurality of tap winding sections, each winding section having its conductor arranged adjacent to each other in the axial direction and wound in a helical manner.
A multi-parallel cylindrical tap is formed as a layer of cylindrical winding, and the conductor ends of each winding section are connected in series between both axial ends of the cylindrical winding, and a tap lead wire is connected. In the winding, the tap winding has an arbitrary number of first winding sections having an arbitrary number of turns, and an arbitrary number of second winding sections having one turn more than the number of turns of the first winding section. When winding the conductors of the first and second winding sections adjacent to each other in the axial direction, the conductor of the second winding section is wound at the beginning of the winding in the axial direction. After winding it an arbitrary number of times on the end side, wind it once more on the winding end side in the axial direction so that the conductor of the second winding section becomes the other end in the axial direction of the cylindrical winding. An induction electric device winding characterized by being wound.