JPS6041709Y2 - 3 phase matching transformer - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a three-phase trapezoidal transformer.

In FIG. 7, FIG. 8, and FIG. 9 showing the outline of the conventional example, the core legs 21, 21' and 21'' are the yoke core 22.
．． 22', 23 and 23', and the core legs 21, 21' and 21'' each have a winding 24.
24' and 24'' are wound.

According to this configuration, seven iron core blocks are required, and when forming the skin layer by winding a long silicon steel strip in manufacturing the iron core block, ten layers have been required.

In the configuration of the present invention, the number of iron core blocks is five,
Also, the number of layers is reduced to eight.

The structure of the present invention will be described below by giving an example and referring to the drawings.

Fig. 1 is a front view of the present application, Fig. 2 is a side view, and Fig. 3 is a plan view.
'' are two grain-oriented silicon steel strips 1a and 1b of the same shape and large and small.
2 and 2' are shown in Figs. 1 and 4. In the upper and lower yoke cores shown in Figures 1 and 5, similar to the core leg 1, a double annular stratified core made of two large and small grain-oriented silicon steel strips 3a and 3b is heat-treated to transform it into a straight line. elliptical core legs 4 to 2
It is made by dividing it into equal parts (see Figures 4 and 5), and the front end of the winding surface of the upper and lower yoke cores 2 and 2' (left side in the figure)
The upper and lower parts of the winding layer surface of core leg 1.1' and the upper and lower parts of the winding layer surface of core leg 1'' are interlinked to the upper and lower parts of the rear side of the same winding layer surface (on the right side in the figure), respectively. Iron core leg 1.1
'.

1'' with the required windings 5.5' and 5''.

In particular, the present application uses a magnetic liquid with high adhesive strength, which is a mixture of iron powder and adhesive, in the abutment part, for example, carbonyl iron powder and Arallide in the case of AB class insulation, and carbonyl iron powder in the case of H class insulation. Magnetic liquid 6at 6bt 7at 7bt mixed with flexible drill varnish in an appropriate ratio
8at and 8b, and fix the abutting part through the magnetic liquid, or adhere the above magnetic liquid to the abutting part, and cover the inner surface with electrically insulating paper or other suitable non-conductive coating. The abutting portion is inserted and abutted, and the abutting portion is fixed through the magnetic liquid and the coating. This is a three-phase combined transformer that maintains the gap at the abutting portion to a minimum value without direct contact between the layer surfaces and has good excitation characteristics.

Also, in Figures 1 to 6, 9a*9b is the iron core leg 1.1'
, 1'', and the fastening bolt penetration hole provided in 10a, 1''.
0b, 11a, and 11b are upper and lower yoke cores 2, respectively.
, 2' are fastening bolt through holes.

This application has the above configuration, and has three iron core legs 1.
1', 1' and the abutting surfaces of the upper and lower yoke cores 2, 2' are coated with the above magnetic liquids 6a, 6b, ? at 7 b
t 8at8b are adhesively brought together and the abutting portions are fixed via a magnetic liquid, or the above magnetic liquid is adhered to the abutting surfaces, a non-conductive coating is inserted into the appropriate place on the inner surface, and a magnetic liquid or magnetic The abutment part is fixed through a liquid and a coating, and the abutment part maintains the gap at the abutment part to a minimum without direct contact between the yoke core and the core leg, reducing the excitation current and excitation rush current. It is a three-phase combined transformer that prevents insulation breakdown between the winding layers and vibration noise caused by magnetic attraction force.The three-phase combined transformer also has the advantage of having an extremely compact iron core structure. This is a useful device that can be used to great effect in the field of three-phase transformers.

As described above, by making the configuration of the core extremely compact, the elements of the core configuration are simplified, the number of man-hours for manufacturing the core is reduced, and the core assembly work is simplified.

[Brief explanation of the drawing]

Fig. 1 is a front view of the present application, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the same, Figs. Fig. 6 is a front view of core legs 1゜1', 1'' of the constituent parts of the present application. Fig. 7 is a side view of the conventional example, and Fig. 8 is a line A-- of the example of Fig. 7.
A sectional view along A', FIG. 9 is a line 13-B' in the example of FIG.
FIG. 1.1', 1''... Iron core leg, la, lb...
...1゜1', two large and small grain-oriented silicon steel strips of 1' component, 2,2'...Yoke iron core, 3...
...Grain-oriented silicon steel strip, 3a, 3b...2,2'
Two large and small grain-oriented silicon steel strips, 4...
・Elongated elliptical core leg, 5.5' before dividing into 2 equal parts to create 2.2'. 5″・・・Winding, 6at 6bt 7at
7bt 8at8b...Magnetic liquid, 9a, 9b.
...1, 1', 1" bolt penetration hole, I Ga
y 10b...2 bolt penetration hole, lla
, llb...2' bolt penetration hole, 21.2
1', 21"... Iron core leg, 22, 22', 23
, 23'...Yoke iron core, 24, 24', 24
″・・・・・・Winding wire.

Claims (1)

[Claims for Utility Model Registration] 1. A double annular layered iron core made of two large and small oriented silicon copper strips, which are heat-treated to straighten the long elliptical core legs, which are divided into two. Upper and lower yoke cores 2, 2
Two large and small grain-oriented silicon steel strips 1a and lb are placed together at the top and bottom of the front end of the winding layer surface and the other end of the rear side of the same winding layer surface, respectively. Three identical long elliptical core legs made by heat treatment for linear deformation 1.1
The upper and lower portions of the winding layer surfaces of core legs 1 and 1'' of core legs 1. In addition to winding the wire, a magnetic liquid made of a mixture of iron powder and adhesive, which has low eddy current loss and a high adhesive effect, is applied to the abutting surfaces, and the abutting parts are fixed through the magnetic liquid. A three-phase impinging trapezoidal transformer. 2. The magnetic liquid described above is adhered to the abutting surfaces, and a non-conductive coating is inserted at the appropriate place on the inner surface, so that the abutting portion is maintained at a minimum value without direct contact between the yoke core and the core legs. A three-phase trapezoidal transformer according to claim 1, wherein the three-phase trapezoidal transformer is fixed via a magnetic liquid and a film so as to maintain a gap between the three-phase trapezoidal transformer.