JPS6364315A - Transfomer apparatus - Google Patents

Abstract

PURPOSE:To decrease the weight of an iron core, and reduce the external size, by making neighboring core yoke parts common, unifying iron cores of two transformers having a phase difference of 90 deg. in a body which is contained in one case. CONSTITUTION:The iron cores 2a and 2b of two transformers having a phase difference of 90 deg. are arranged so as to adjoin to each other. The yoke parts 3 of each iron core are made common in order that only (phia-phib) which is a difference between the main magnetic fluxes of both transformers A and B may flow. The iron cores 2a and 2b are unified in a body and accommodated in a case 4. The iron core yoke parts 2a and 2b which were separately and independently arranged hitherto are made to have a sectional area reduced by 2-21/2 as compared with conventional ones. The decrease of weight of an iron core and reduction of external size can be attained, thereby.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transformer device, and in particular to a transformer device for use in a single upper circuit having a phase difference of 90 degrees, such as an autotransformer for AC electrification. This invention relates to a transformer device consisting of a down transformer.

[Conventional technology]

Hereinafter, this type of conventional transformer device will be explained with reference to FIGS. q and 3. Note that this explanation will be made regarding the upper and lower transformers of a single-phase square-wound transformer for AC power. In the figure, the upper transformer [A] and the lower multi-purpose transformer (B) each have a winding (la) + (tb
), iron cores (2a) and (2b).

(φa) and (φb) indicate magnetic fluxes flowing through the iron cores (λa) and (b), respectively. In addition, the iron core (, 2a),
(ub) are the core legs (,211,) and (x
b,) and core relay part (,2a,,), (,2b,)
It is formed of. Both pressure gauges (A) and CB) are housed in outer boxes (<<a) and (9b), respectively.

According to the above configuration, the iron cores (2
A magnetic circuit is formed in each of a) and (2b).

[Problem that the invention seeks to solve]

In the conventional transformer device as described above, each transformer (A)
, each iron core (2a) forming the magnetic circuit of (B),
(b), outer box (&a), and (<<b) are each provided independently, which increases the required weight of the iron core and increases iron loss. Installation using a box (there were problems such as an increase in the R area).

The present invention has been made to solve these problems, and aims to provide an economical and efficient transformer device by reducing the weight of the iron core and the external dimensions.

[Means for solving problems]

The transformer device according to the present invention commonizes the core yoke portion of each core of two AC autotransformers so that the sum or difference of the independent magnetic flux of each transformer core passes through, The cores of the two transformers were integrated and housed in a single outer box.

[Effect]

Simplified.

〔Example〕

FIGS. 1, 2, and 2 show an embodiment of the present invention. In the figures, the upper transformer (A), the lower transformer (B), the windings (/a), (/b) , iron core (2a), (,2'o)
, iron core leg (ja,).

(2b,), core yoke (,!a,), (,2b,
) are all the same as the conventional ones in FIG. 9 and FIG.
, (2b) are arranged in contact with each other, and each core yoke part (3) is made common so that only the difference (φ8 - φb) in the main magnetic flux of both pressure gauges (A) and CB) flows. In addition to integrating the iron core of the pressure regulator, the outer casing was also standardized.

With the above configuration, as shown in FIG.
b), and if expressed as a vector, the main magnetic flux (φ5) of the upper-side transformer (A) (φρ is φa=/+jO1 and lower-side transformer CB) can be expressed as φb −0+ j /. can.

This main magnetic flux (φa) 1 (φb) is a double pressure generator (A),
(B) Each core yoke part (,2a,), (,2
Since the main magnetic flux passes through B), by making the core yoke part common, the common core yoke part (3) has the following:
Differential magnetic flux φu - φb 4. In other words, φ. -φ5
= / 10J/-=v'T.

By making the core yoke parts of both pressure gauges (A) and (B) common in this way, the core yoke parts (Ja, , ), (, 2b, ), the core cross-sectional area can be made smaller by sea-G than the conventional core yoke and can be combined into seven pieces.

Note that although the above explanation was made using the difference in magnetic flux, the same effect can be obtained by using the sum of the magnetic fluxes.

〔Effect of the invention〕

As described above, according to the present invention, adjacent iron core yoke parts are made common, and the iron core of one transformer having a phase difference of 90 degrees is integrated and housed in the same outer box. In addition to reducing the iron core IT and reducing the external dimensions, the outer box is also made common, reducing the installation area. At the same time, the iron loss that occurs is also reduced, resulting in an economical and efficient transformer. It becomes possible to manufacture equipment. ′

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, FIG. 7 is a plan view, FIG. 2 is a side view, and FIG. 3 is a main magnetic flux vector diagram for explaining the operation. Figure 3 is a plan view of a conventional transformer device, and Figure S is a side view of the same. (A)...autotransformer for upper shell, CB)...autotransformer for lower shell, (/a), (/b)...winding, (, +a),
(, +b)...Iron core, (r)...Commoned core yoke, (S...Outer box, (φa), (9)...Main magnetic flux. In each figure, the same symbols are Shows the same or equivalent part. Agent Zeng Ga Michi Terui: Chi 1,75.

Claims (1)

[Claims] Each iron core forming a magnetic circuit of two AC electrification autotransformers having a phase difference of 90 degrees from each other, and
an iron core yoke portion of each of the iron cores that is shared so that either the sum or the difference of the main magnetic flux in the two iron cores passes through;
A transformer device comprising a single outer box housing several transformers.