JPH04364012A - Split winding transformer - Google Patents

Abstract

PURPOSE:To simplify the winding arrangement of a split winding transformer and facilitate the formation of the winding arrangement. CONSTITUTION:A plurality of low voltage windings 2, 3 are stripped, and are concentrically wound via an insulating sheet 5. A high voltage winding 4 is concentrically wound on the outer periphery of the low voltage windings 2, 3 wound concentrically, which are wound on an iron core 1. Thus, each winding arrangement is simplified and the formation thereof is facilitated. Further, % impedances between the high voltage winding 4 and the low voltage windings 2, 3 are made substantially identical to each other.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to split winding transformers.

0002

[Prior Art] Fig. 3 shows an example of a conventional split winding transformer, in which 1 corresponds to an iron core, 2 and 3 low voltage windings arranged above and below, and 4 corresponds to one low voltage winding 2. Winding part 4
1 and a winding portion 42 corresponding to the other low voltage winding 3 are connected in parallel.

This type of split winding transformer connects the high voltage winding 4 to a bus bar 51 as shown in FIG. 4, and connects each low voltage winding 2 and 3 to an appropriate load via each switch 52. used.

By the way, conventionally, as mentioned above, the low voltage winding 2
, 3 are divided into upper and lower halves, and the high voltage winding 4 is comprised of winding portions 41 and 42. This is to make the % impedance between the high voltage winding 4 and the low voltage winding 2 and between the high voltage winding 4 and the low voltage winding 3 the same.

However, according to such a configuration, the high voltage winding 4 is divided into upper and lower halves and connected in parallel, and the low voltage windings 2 and 3 are connected in parallel.
Each must be configured separately. Therefore, the structure of these windings is complicated, and the formation of these windings is extremely troublesome.

[0006]

SUMMARY OF THE INVENTION The present invention provides a configuration in which the % impedance between the high voltage winding and each low voltage winding is the same, without requiring a divided configuration of the windings. The purpose is to simplify the process.

[0007]

[Means for Solving the Problems] The present invention is characterized in that each low-voltage winding is constituted by a concentric winding with an insulating sheet interposed therebetween, and a high-voltage winding is wound around the outer periphery of the concentric winding.

[0008]

[Operation] Since each low voltage winding is a strip winding and these windings are wound concentrically, the % impedance between the high voltage winding and each low voltage winding is approximately the same. In addition, since each low voltage winding is integrally constructed as a strip winding, it is sufficient to simply wind the strip winding, and there is no need to divide the high voltage winding into upper and lower parts and connect them in parallel. The winding configuration is simplified. Furthermore, each winding is insulated by an insulating sheet, so
Insulation between the low voltage windings and between each turn is also ensured.

[0009]

[Embodiment] An embodiment of the present invention will be explained with reference to FIGS. 1 and 2. Note that parts given the same reference numerals as in FIG. 3 indicate the same or corresponding parts. The embodiment shown in FIG. 1 shows a three-winding split-winding transformer with two low-voltage windings.

According to the invention, the high voltage winding 4 is constituted by a single winding, and the low voltage windings 2, 3 are constituted by strip windings. An insulating sheet 5 is interposed between each of the low voltage windings 2 and 3, and the windings are concentrically wound as shown in FIG. 6 and 7 are leads led out from the end of the low voltage winding edge 2;
9 is a lead led out from the end of the low voltage winding 3. Further, 10 and 11 are leads of the high voltage winding 4.

The high-voltage winding 4 does not need to be composed of two divided winding parts 41 and 42 as in the conventional case, but is composed of a single winding. A high voltage winding 4 is arranged around the outer periphery of each low voltage winding 2 and 3. Low voltage winding 2, 3 and high voltage winding 4
are wound concentrically around the iron core 1.

The low-voltage windings 2 and 3 are composed of strip windings and are concentric, and are arranged concentrically with respect to the high-voltage winding 4, so that the high-voltage winding 4 and each low-voltage winding 2 ,3
The respective % impedances in between are almost the same.

Each of the low voltage windings 2 and 3 is simply a strip winding wound concentrically, and there is no need for the structure to be divided into upper and lower parts as in the conventional case, and the high voltage winding 4 There is no need to divide and connect in parallel as in the past. Therefore, these winding configurations are extremely simplified compared to conventional configurations, and their formation is facilitated.

In the above embodiment, the low-voltage winding has two windings, but the present invention is applicable even if there are three or more windings.

[0015]

Effects of the Invention As detailed above, according to the present invention, a plurality of low-voltage windings are formed into strip windings, and these windings are concentrically wound. It is possible to simplify the configuration of not only high-voltage windings but also high-voltage windings, and to make them easy to form.Furthermore, since an insulating sheet is interposed between each winding, it is possible to The effect is that insulation between each turn can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a low voltage winding.

FIG. 3 is a sectional view showing a conventional example.

FIG. 4 is a circuit diagram showing an example of the use of a split winding transformer.

[Explanation of symbols]

1 Iron core 2 Low voltage winding 3 Low voltage winding 4 High voltage winding 5 Insulation sheet

Claims (1)

[Claims] 1. A split-winding transformer comprising a plurality of low-voltage windings and a single high-voltage winding, the low-voltage windings and high-voltage windings being wound around an iron core, wherein each of the low-voltage windings is A split winding transformer comprising a strip winding wound concentrically with an insulating sheet interposed therebetween, and the high voltage winding arranged around the outer periphery of the concentrically wound low voltage winding.