WO2007136288A1

WO2007136288A1 - Method for winding a high-frequency supply transformer

Info

Publication number: WO2007136288A1
Application number: PCT/RU2006/000254
Authority: WO
Inventors: Sergey Vasilievich Ivanov; Andrey Nikolaevich Skoblilov; Petr Filippovich Slivnoi
Original assignee: Sergey Vasilievich Ivanov; Andrey Nikolaevich Skoblilov; Petr Filippovich Slivnoi
Priority date: 2006-05-22
Filing date: 2006-05-22
Publication date: 2007-11-29

Abstract

The inventive method for winding a high-frequency supply transformer is carried out by using a packet of electroconductive insulated strips having a rectangular cross-section in the form of a coil-winding material. The material is wound on a sleeve made of a dielectric material. The inventive method consists, prior to winding, in bending an individual strip of a packet in a direction perpendicular to the axis thereof at the half of the length thereof in two opposite directions on both sides from the center in such a way that a node of bending is formed, in assembling the strips in a packet by successively and axially placing said nodes one above the other, in resting up the strip packet by the nodes of bending against the sleeve surface and in laying it in the opposite directions which are defined by the position of the ends of the strip packet at the nodes of bending. The inventive method makes it possible to reduce the inductance dispersion, to simplify the labor input of a winding process and to decrease the allover dimensional characteristics of a transformer produced according to the inventive method.

Description

DESCRIPTION OF THE INVENTION

METHOD FOR WINDING HIGH FREQUENCY POWER TRANSFORMER

Technical field

The invention relates to the field of manufacturing elements of pulse technology, and in particular to methods of winding high-frequency pulse power transformers.

State of the art

Known methods of winding power transformers, which are the manufacture of a winding bundle (littsendrata) by twisting a set of insulated wires, sequentially laying the littsendratom primary and secondary windings on the mandrel with the separation of the windings from each other with one or more layers of dielectric material, removing the mandrel, giving the coil a shape corresponding to the configuration of the magnetic circuit window, the impregnation of the finished coil with varnish and the connection of the winding leads to the tips by cleaning each of the components ittsendrat wires by insulation, tinning and brazing to the tip (Tsvetayev S. Powerful switched mode power supply. Radio, 1990, N <? 9 s.59-62 Petrov and A. Welding apparatus. Radio amateur 1993, JSfs 5).

Significant disadvantages of the analogues described above are the high dissipation inductance, the complexity and high complexity of the winding, as well as an increase in the overall characteristics of the transformer.

By the totality of the features, the closest analogue (prototype) of the proposed method is the method of winding a power transformer, which consists in the manufacture of a litzendrat by placing a set of insulated wires on the supports, twisting them into a litzendrat using special equipment, for example, a hand drill, rotor, etc., winding the finished litzendrat along the entire length with a slight overlap with a strip of dielectric material (for example, cotton fabric), sequential laying of primary and secondary rim windings of littsendrat on a mandrel, repeating the shape of the core core with separation of the windings from each other by insulating material (a layer of electric cardboard), the screed of the finished coil perpendicular to the winding direction with dielectric fastening material, removing the mandrel, shaping the resulting coil to the shape of the corresponding window window of the oil pipe, impregnating the finished and fastening the terminals of the windings with lugs by cleaning each of the components of the Litz wire from insulation, tinning and soldering to tilt Chechnikov (V. Volodin. Inverter source of welding current. Repair experience and calculation of electromagnetic elements. Radio, 2003, Xe 9, p. ZZ).

The disadvantages of the known method of winding are the high dissipation inductance, which occurs due to the impossibility of the correct location of the turns of the windings between themselves and the magnetic circuit, weakening the connection of the latter with each other, the complexity and high complexity of the winding process, due to a number of steps for manufacturing a litzendrat from a set of wires using special equipment, giving the finished coil the desired shape and the implementation of the conclusions of the windings, as well as increasing the overall characteristics of the transformer pa.

Disclosure of invention

The tasks to which the proposed technical solution is directed are: reducing the dispersion inductance, simplifying and reducing the complexity of the winding process of the transformer, and also reducing the overall characteristics of the transformer manufactured by the proposed method.

These tasks are achieved by the fact that in the known method of winding a high-frequency power transformer, which consists in sequential laying on the mandrel of each of the windings, according to the invention, a packet of electrically conductive insulated rectangular tapes is used as winding material, the winding is produced on a sleeve of dielectric material. Before winding each of the windings, a single tape included in the package, in the region of half its length, is bent perpendicular to its axis in two opposite false directions on either side of the center, forming an inflection knot. Next, collect the tape in a package by successive coaxial placement of one node over another. Knots of the kink support the package of tapes on the surface of the sleeve and lay it in opposite directions, determined by the position of the ends of the package of ribbons in the nodes of the kink.

Brief Description of the Drawings

In figures 1 to 18, drawings are presented explaining sequentially the winding process of a high-frequency power transformer that implements the proposed method.

In the figures from 19 to 22 presents photographic material illustrating the advantages of the proposed method in terms of overall characteristics.

The best embodiment of the invention

The method of winding a high-frequency power transformer is as follows.

As the winding material, a packet 1 of rectangular conductive insulated tapes 2 is used (Fig. 1), while before winding each of the windings, a single tape 2 included in the packet 1 is bent perpendicular to its axis in opposite directions on both sides in the half-length region from the center 3, forming a knot of inflection 4 (Fig.

2).

Then collect the tape 2 in the package 1 by successive coaxial placement of one node 4 on top of another (Fig. 3).

The winding package 1 of the tapes 2 is produced on a sleeve 5 made of a dielectric material.

Between the edges of the tapes 2 in the nodes of the inflection 4, as well as the edges of the package 1 of the tapes 2 and the sleeve 5, gaps A and B, respectively, are left (Fig. 4).

Initially, the package 1 of tapes 2 by nodes 4 is supported on the surface of the sleeve 5 and then the package 1 of tapes 2 is wound in opposite directions, determined by the position of the ends of the package 1 of tapes 2 in nodes 4 (Figs. 4-8).

After winding is completed, the conclusions 6 of the resulting winding 7 are bent perpendicular to the axis of the package 1 of tapes 2 in the opposite direction. directions (Fig. 8, 9), and the winding 7 itself is separated from the next winding 8 by a layer of dielectric material 9 (Fig. 10).

Next, the secondary winding 8 is wound with terminals 10 in the same way as described above for winding 7.

In FIG. 11-17, the winding of the secondary winding 8 is sequentially shown in the case of the terminals 6 and 10 being located on the diametrically opposite surfaces of the sleeve 5. It should be noted that the terminals 6 and 10 of the windings 7 and 8, respectively, can be located on one surface of the sleeve 5 as well as on its diametrically opposed surfaces.

The appearance of the transformer assembly with the manifold 11 is shown in FIG. eighteen.

Thus, the technical results of the proposed method of winding a high-frequency power transformer are to reduce the leakage inductance due to the optimal relative position of the turns of the transformer windings relative to each other and the magnetic circuit, simplifying and reducing the complexity of the winding process of the transformer, as well as reducing its overall characteristics by using a package as a winding material conductive insulated tapes of rectangular cross section, winding windings on sleeves of dielectric material, the formation before each winding of each winding in a single tape included in the package, in the region of half its length of the knot of the inflection perpendicular to its axis in two opposite directions on both sides of the center, the assembly of tapes in the package by sequential coaxial placement of one node over another, supporting the knots of the bend of the package of tapes on the surface of the liner and laying the package in opposite directions, determined by the position of the ends of the package of tapes in the nodes of the bend.

A comparative analysis revealed the following differences of the proposed method from the prototype method:

- the proposed method is characterized by new actions on material objects;

- in the proposed method there is no series of actions that complicate and increase the complexity of the winding process transformer, as well as increasing its overall characteristics.

In FIG. 19-22, a photographic material is presented illustrating the advantages of the proposed method in terms of overall characteristics compared to the prototype method by the example of device variants (transformers) with similar technical and functional characteristics made in accordance with the prototype method (Fig. 19, 20) and in accordance with the proposed method (Fig. 21, 22).

A comparative analysis of the photographic material shown in FIG. 19, 20 and FIG. 21, 22 clearly confirms the reduction in the overall characteristics of the transformer made in accordance with the proposed method of winding.

The inventive method, while maintaining the positive qualities of the analogues described in the description, differs in comparison with them in reducing the dissipation inductance, simplifying the technology and reducing the complexity of the winding process of the transformer, as well as reducing the overall characteristics of the transformer manufactured by the proposed method.

Industrial applicability

The proposed method has passed industrial tests and is used in the factory for winding high-frequency power transformers.

Claims

CLAIM

The method of winding a high-frequency power transformer, which consists in sequential laying on the mandrel of each of the windings, characterized in that a packet of electrically conductive insulated tapes of rectangular cross section is used as winding material, the winding is produced on a sleeve of dielectric material, before winding each of the windings, a separate tape is included in a packet, in the region of half its length, bend perpendicular to its axis in two opposite directions on either side of the center, forming a knot ba, then the ribbons are collected in a packet by successive coaxial placement of one assembly over another, the inflection units rest the ribbon package on the surface of the sleeve and stack it in opposite directions, determined by the position of the ends of the ribbon package in the inflection nodes.