UA8941U - Power voltage transformer - Google Patents

Abstract

The proposed power voltage transformer contains a laminated shell magnetic core with a square cross-section, which is made of electric steel plates. At each bar of the magnetic core, the coil of the transformer primary winding and the coil of the secondary winding are installed. The secondary winding coil encloses the secondary winding coil. Each of the coils is made by continuously winding wire sequentially on the frames of the coils.

Description

Description of the invention

A useful model relates to electrical engineering, in particular to transformer construction, and can be used as a step-up or step-down power transformer, as well as a source of welding current.

The closest to the proposed one is a transformer with a square core window and winding coils on each of its four rods |11.

The disadvantage of this design is that the coils, which are wound separately from each other and then commutated, 70 which leads to an increase in energy consumption at the point of connection of the windings of one coil to another, more manual work when switching the windings, and also leads to to increase the waste of the wire from which the windings are made.

The task of the useful model is to increase the manufacturability of the assembly and reduce the waste of the winding material.

The task is achieved by creating a power voltage transformer consisting of a square-shaped armored charge plate magnet wire, on each of whose rods 72 there is a coil of the primary winding on top of which a coil of the secondary winding is wound, while each of the windings is wound with a continuous wire in series on each coil, with output of the beginning and end of the winding located on all four coils.

This design of the transformer makes it possible to more fully, in comparison with the conventional one, use the conditions of energy transfer from the primary to the secondary winding in comparison with |), in which the energy of the electromagnetic field is transmitted along the Condition-Poiting vector through the plane bounded by the side surfaces of the windings (Fig. 1) . When the windings are distributed over all core rods, the total surface area of the primary and secondary windings increases compared to the conventional design. This makes it possible to reduce the density of transmitted and received energy, and therefore to reduce energy losses. This position of the windings is close to the arrangement of the windings of a toroidal transformer, therefore the characteristics, such as the efficiency and the voltage of k.z3., of the toroidal transformer and the proposed design of the transformer are very close. does not allow to automate the manufacturing process. In the proposed design, the windings are performed by mechanical means.

As was stated in |1| when the secondary coil is located on the primary and vice versa, the total magnetic flux in the core is very small, so the cross section of the core can be significantly reduced. It is described in (2) that part of the energy through the primary winding goes to the costs of magnetization in the core. If the cross-section, and therefore the volume, of the core is reduced, then the losses due to magnetization are reduced, and therefore the n.h. current is also reduced. In fact, o the core plays two roles: the first is the accumulation of the magnetic phase of the electromagnetic field, the second is the channel of the reverse (connection from the secondary to the primary winding. Indeed, when the transformer is operating in the n.h. mode, there is a potential difference at the ends of the 3o secondary winding, but current absent. In the core, there is a magnetic flux created by the current of the primary winding. When the load is connected to the secondary winding, a current begins to flow through it, which creates a magnetic flux in the opposite direction to the flow created by the primary current. "

According to the law of electromagnetic induction, the total voltage at the ends of the primary winding changes in the direction of 8 decrease relative to the input voltage, which leads to an increase in the primary current to the corresponding value. The smaller the volume of the core, the smaller the loss due to remagnetization of the core material, the smaller the inertia of the feedback channel, and as a result, the lag of the primary current from the secondary decreases, which

Iz" leads to a faster balancing of the magnetizing forces and an increase in efficiency.

When manufacturing windings, the principle of equality of magnetizing forces of the primary and secondary windings must also be taken into account. For example, in the manufacture of a transformer for a half-cycle rectifier with a middle point, two secondary windings are wound in parallel, and the windings are wound with two parallel wires so that one of the wires is on top of the other. When moving to the next coil, the winding (Te) is done exactly the same, but the wires change places, the one that was on top becomes the bottom, and the one that was on the bottom becomes the top. This makes it possible to compensate for the magnetic fluxes of the primary and secondary windings in each rod e of the core at each moment of the rectifier operation, as well as to equalize the length of the secondary windings and bring their active resistance values closer to each other.

Figure 2 schematically shows the active part of the transformer. The transformer contains a magnetic wire 1 in the form of a square on each rod of which are placed the coils of the primary 2 with terminals NO, КИ and secondary Z with terminals Н2, К2 of the windings.

In the coils, the turns of the secondary winding C are laid on top of the primary 2. All rows of the primary 2 and secondary C

So" winding is insulated with heat-resistant electrical insulation. The coils are fixed on the magnetic conductor 1 with the help of spacers made of dielectric material. The gap between the coils and the magnet wire, necessary for free air circulation, is achieved with the help of spacers (not shown in the figure).

List of drawing figures.

In Fig.1. The direction of movement of electromagnetic energy 5 in the windings of the transformer, on one page with 60 acceptable designations: a) - Energy flows of the primary 51 and secondary 52 windings, where 1 is the primary winding, 2 is the secondary winding, and1 is the primary current, and2 is the secondary current, E1 - electrical tension of the primary winding, NO - magnetic tension of the primary winding, E2 - electrical tension of the secondary winding, H2 - magnetic tension of the secondary winding; b) - Direction of movement of energy 51 from the power supply network to the primary winding of the transformer;

c) - The direction of energy movement from the primary winding to the secondary 5, from the secondary to the load of the transformer 52 and the primary to the core 50.

In Fig. 2 "Power part of the transformer", on one page with acceptable designations: 1 - magnetic wire; 2 - primary winding coils;

C - secondary winding coil;

NO, H2 - the beginning of the primary and secondary windings, respectively;

КИ, К2 - the end of the primary and secondary windings, respectively. 70 Information that confirms the possibility of implementing a useful model

A useful model has been implemented and tested in the research and development work on creation

Power voltage transformer, on the basis of the laboratory of the limited liability company "Trust LTD specialized production and technical enterprise". Several first copies of Power Voltage Transformers were produced. The test results are positive. The power transformer /5 voltage - was recognized as suitable for industrial use, which is confirmed by the "Act of conducting comparative tests of the Power voltage transformer" dated 03/22/2005 (attached).

Information sources (literature): 1. Declaratory patent for an invention No. 56977 A dated May 15, 2003. 2. O.B. Bron "Electromagnetic field as a type of matter" Gosznergoizdat M. 1962. 5 2 m tiv shchi 5 --- he SHIN Ya

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Claims (1)

The formula of the invention хо 20 Power voltage transformer consisting of an armored charged plate 7" of a square-shaped magnet wire, on each of the rods of which there is a coil of the primary winding, on top of which a coil of the secondary winding is wound, which differs in that each of the windings is wound with a continuous wire in series on each coil, with the lead of the beginning and end of the winding located on all four coils, while the assembly of the core is carried out by stacking iron plates one by one SU 55 of geometric size with sequential binding inside the pre-prepared coils so that the sides of the magnetic core form a square, after assembling the plate, the corners are drilled and tightened with insulated or diamagnetic pins, to fix the windings and to tighten the core plates, the coils are wedged in the center of the rods with wedges dielectric material. 60 Official Bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2005, M 8, 15.08.2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. b5