UA84746C2 - Three-phase transformer - Google Patents

Abstract

The invention relates to electric engineering. A three-phase transformer comprises low and high voltage windings in every phase and a compose magnet system. The magnet system of the transformer is solid-symmetric one and consists of a yoke and six limbs of magnet made as a six-beam star of limbs with angles of 60° between them. Outside, limbs are embraces by the yoke. On the other limbs (solid angle 120°), a primary and a secondary winding are located. The other limbs are free of windings and being shunted. On each of six yoke sections, an addition bias winding are located, two for each phase. The magnet system of the transformer may be realized as a cylinder having cross section presents in the form of a six-beam star of limbs embraces by the ring-like yoke of in the form of hexagon prism with cross-section as six-beam star of limbs embraced by hexagon-like yoke. The proportion between width of the magnet system of the transformer and width of limbs exceeds 1. The invention allows ratio of transformer power and weight for active materials to be increased, provides modulating control of three phase voltage and modulating control of three-phase network balancing.

Claims (1)

(| (b1) IPC (2006) IN NOTE 27/00 M NO1E 30/00 MINISTRY OF EDUCATION AND SCIENCE OF UKRAINE STATE DEPARTMENT OF INTELLECTUAL PROPERTY TO THE PATENT FOR THE INVENTION bus (54) THREE-PHASE TRANSFORMER 1 2 (21) a200611328 spatial star beam with angles of 60 (22) 10.27.2006 degrees between them and covered by a yoke on the outside, on (24) 11.25.2008 three rods one through another are placed windings (46) 11.25.2008, Byul.Me 22, 2008 phases in the composition of primary and secondary the winding of one (72) BILY LEONID ADAMOVYCH, SHA, KOVIVCHAK phase, the other three rods are free from windings and are shun- YAROSLAV VASYLOVYCH, OA, CHERNISHUK vOtovy, on each of the six sections the yoke is placed LODYMIR PETROVYCH, ARSENYUK VALERY VA- additional magnetization winding, two for each SYLOVYCH, OA phase, which are placed on different sides of the corresponding (73) BILY LEONID ADAMOVYCH, SHA, KOVIVCHAK phase winding, the magnetic system is made with YAROSLAV VASYLOVYCH, OA, CHERNISHUK VO- the ratio of its width and rod widths, bi- LODYMIR PETROVYCH, ARSENYUK VALE Swarm is greater than one. SYLOVYCH, OA 2. Three-phase transformer according to claim 1, which is distinguished by the fact that the magnetic system is made in the form of a cylinder, the cross-section of which is U 493816, 30.11 .1975 with a six-rayed star of rods, covered 5BY 936053, 15.06.1982 with a ring-shaped yoke. U 792303, 02.01.1981 3. The three-phase transformer according to claim 1, which cuts off (57) 1. The three-phase transformer, which includes the fact that the magnetic system is made in the composition of the winding of low and high voltage in the view of a hexagonal prism, the cross-section of each phase and the composite magnetic system, which is a six-ray star of rods, differs in that the magnetic system consists of a yoke and six rods arranged in the form of a hexagonal yoke. The invention belongs to the field of electrical engineering. The closest to the proposed one, in particular, to the construction of three-phase transformers with features and technical results, are the motors. The invention can be used in electrical prototype - regulating three-phase circuit in the power industry, mechanical engineering, meta-transformer with magnetic switching (Authors of lurgy, radio engineering and other fields where the certificate of the USSR Mo792303 M. Cl. НО1 - devices with an increased power ratio - E31/06, 1978), containing rods in its composition, in to a unit of weight of active materials, which allow placed in space at an angle of 120 degrees, one can automatically or regulatedly eliminate the neg- smooth adjustment of the three-phase voltage under the angle of which the windings are placed by magnetizing load, devices with increased reliability and connected in series-opposite, in which with -2 operating resource. in order to reduce the consumption of active materials, in Currently, increasing the capacity of the existing expansion of the range of smooth regulation of three-phase transformers is carried out only by strips, the yokes are wound, concentrically calculating the increase in their geometric dimensions. Aligned relative to each other, the rods are impossible to eliminate the asymmetry of voltages by traditional transformers in the form of a charged three-ray star, gauges, and are carried out with the help of a single plane. The design of the magnetic sys- the use of separate special devices that the topic of the prototype does not contain three free from condi- requires significant additional economic costs. the current of the rods and therefore does not provide automatic voltage regulation under the load by balancing the voltages in the transformer. It is magnetized discretely and in small ranges. the transformer system is planar, minimal but covers the phase windings in space, which leads to a significant reduction in power by a 120-degree transformer stamped from a sheet of electro-rmator. In addition, adjustment of three-phase tensile steel, for the magnetic system of a cylindrical one, is carried out by magnetizing the shape. with a direct current that unevenly saturates the mag- Fig. 8 shows a segment with a radial kunity system and, as a result, leads to a 180-degree spot, stamped from the sheet of electro- ration of the voltage form. technical steel, for magnetic system cylindrical A significant drawback of the prototype is the galvanic form. connection of the primary and secondary windings of the transformer. In Fig. 9 shows a segment with a radial guide, which excludes the possibility of automatic 240 degrees, stamped from a sheet of electro-automatic or adjustable symmetrization of technical steel, for a magnetic system of cylindrical strips. new form The invention is based on the task of increasing 10 shows a cement with a radial kushite transformer power ratio volume 300 degrees, stamped from a sheet of electro- to a unit weight of active materials in comparison with technical steel, for a magnetic system cylindrical prototype, to ensure the possibility of a smooth shape. regulation of three-phase voltage and automatic In fig. 11 shows a cement with a 360-degree radial ku- or smoothly adjustable symmetrization triface, stamped from a sheet of electronic network. technical steel, for magnetic system cylindrical The given task is solved at the expense of the tone form. thing that a three-phase transformer contains in its own- In fig. 12 shows a side view of the three-phase composition of the low and high voltage winding. in a transformer with a magnetic system, each phase has a composite magnetic system, according to it, in the form of a hexagonal prism. according to the invention, the magnetic system of the transformer in fig. 13 shows a top view of a three-phase transformer consisting of a yoke and six rods, made in the form of a transformer with a magnetic system, in the form of a six-ray star with spatial nanos in the form of a hexagonal prism. with angles of 60 degrees between them, the rods on the outside cover- In fig. 14 shows a side view of a magnetic yoke with a yoke, on three rods with mutual pro- system of a three-phase transformer, made in torus angles of 120 degrees, windings in the form of a hexagonal prism are placed. phases, on each rod the primary and secondary ob- In fig. 15 shows a top view of a magnetic coil of one phase, the other three rods, free from the three-phase transformer system made in the coil, are shunt, on six sections of the yoke of the size of a hexagonal prism. there are six additional magnetization windings, Fig. 16 shows a structural diagram of two for each phase, a magnetic system for the production of phase and additional windings of the transformer with the ratio of its width to the width of the stripper on a magnetic structure made in the form of a larger unit, which is made in the form of cylinders - of a hexagonal prism. dra, the cross-section of which is In fig. 17 shows a cement with a radial cube - a six-ray star of rods, covered by a ring of 60 degrees, stamped from a sheet with an electro-like yoke, or made in the form of six-technical steel, for a magnetic system made in the form of a faceted prism, the cross section of which represents hexagonal prism. infuses a six-rayed star of rods, in fig. 18 shows a cement with a radial cup held by a hexagonal yoke. volume 120 degrees, stamped from a sheet of electro- The essence of the invention and the principle of operation are explained in technical steel, for the magnetic system, made in the drawings. in the form of a hexagonal prism. In fig. 1 shows a side view of a three-phase In fig. 19 shows a cement with a 180-degree cylindrite radial corner of a transformer with a magnetic system, stamped from a sheet of an electronic form. technical steel, for the magnetic system, made in Figure 2 shows a top view of a three-phase form of a hexagonal prism. of a transformer with a magnetic system cylinders - Fig. 20 shows a segment with a pile-shaped radial. volume 240 degrees, stamped from a sheet of electro- In fig. 3 shows a side view of magnetic steel, for a magnetic system made in the shape of a three-phase transformer in the form of a cylindrical hexagonal prism. forms Fig. 21 shows a segment with a radial cone Figure 4 shows a top view of a 300-degree magnetic volume stamped from a sheet of electrical system of a three-phase transformer made of cylindrical technical steel, for a magnetic system made in this form. in the form of a hexagonal prism. In fig. Fig. 5 shows the structural scheme of the layout. Fig. 22 shows a segment with radial winding of the phase and additional windings by a 360-degree transformer, stamped from an electromotor sheet on a magnetic structure made of stainless steel, for a magnetic system made in of the cylinder. in the form of a hexagonal prism. In fig. 6 shows a segment with a radial angle. A three-phase transformer (see Fig. 1, Fig. 2, volume 60 degrees, stamped from a sheet of electrical cylindrical windings 1 (Fig. 2), 7 (Fig. 13), additional windings of the 2nd form. (fig. 2), 8 (fig. 13), magnetic system Z (fig. 1), 9 (fig. 12). The magnetic system of the transformer is made in the form of a cylinder (Fig. 3, Fig. 4) or hexagonal with the same cross-sectional areas of the prism (Fig. 14, Fig. 15), the cross-section of which rods of the magnetic system of the prototype and proposed - represents six rods 5, made in a transformer, which is equivalent to the shape of a six-rayed star with the spatial distribution of the power ratio of the transformer, with angles of 60 degrees between them, covered by a ring gap to a unit of weight of active materials. In turn, with a yoke 4 (Fig. 4), or a hexagonal yoke 10, the reduction of losses on the scattering flows of the toto- (Fig. 15), the tops of which are connected by rods 11 in the same growth of the useful factor! actions in the form of a six-pointed star. Regulation of the voltage of the proposed tarn- The magnetic system of the transformer shihgs the shaper when working under load is made of sheets of electrical engineering steel b (fig. 3), 12 (fig. separated with the help of additional windings, 14) in the form shown in fig.P or in Fig. 22, placed on the yoke. These windings are connected in pairs, which are isolated and compressed (suppressed) between each other and relative to each phase (for example, phase A - form a monolithic magnetic system. For the purpose of the skein Rd-Rhi and Rx»--Rag), in series or parallel - obtaining the best electromagnetic characteristics, in phase with the primary winding of the phase from the meristem of the transformer, its magnetic system and the regulation of the magnetic flux of this phase. it is advisable to charge from solid plates of the form By changing the voltage (current) of additional windings, the fig. 11 or fig.22. The magnetic system can also be charged from the plates of the shape shown in Fig. b of the transformer under load in wide - fig. 10 or fig. 17 - fig. 21. With this method ranges. charging of the magnetic system every next Provision of the possibility of automatic sy- layer of sheets is shifted at an angle by one or dekilometer of the three-phase network is achieved thanks to ka sections to achieve an even distribution of the presence of shunt rods. This is the construction of gaps in the magnetic system in different planes. of the magnetic system during the operation of the transformer on the The structural diagram of the placement of phase and to-unsymmetrical load of the transfer windings of the transformer on the magnetic system is shown in Fig. 5 and in Fig. 16. Phase blocks, aligning them. Balancing of phase voltages is the windings of the transformer placed concentrically as a result of balancing of magnetic fluxes. of three rods, shifted in space by 120 degrees - Smoothly adjustable symmetrization of voltages in siv (for example, phase A - the high-voltage winding of complex asymmetric operation modes gy (АХ) and the low-voltage winding (а-х) on one is carried out by using additional rods) and form a three-phase system. Three other windings, placed on the external yoke of the magnetic rod, placed among themselves at an angle of 120 degrees of the system. For this purpose, the additional windings are unphased, remain free of windings and perform the function of magnetic shunts on average or through shunt electrical resistances. On the yoke, magnets are connected in a "star" or "triangle". system, three additional windings are placed, which are made up of two parts (for example, phase A ra does not affect the properties of the proposed - windings Rdi-Rhi and Rho-R dg). transformer, selected from the technological The magnetic system of the proposed transformer, the magnetic system can be manufactured in the form of a cylinder or hexagonal prism. prisms Such magnetic systems, manufactured at This design difference is not fundamental, the ratio of their width to the width of the rods does not affect the essence of the invention, but covers larger units, almost completely covers the phase windings in different technological variants of the magnetic curtain. This is done thanks to the system. clarity in the design of magnetic systems of magnetic Technical and economic indicators of the proposed rods that do not contain windings and perform the function of a three-phase transformer (the ratio of magnetic shunts. Greater coverage of the conductor power to the weight of active materials, the coefficient of windings by the magnetic system leads to a useful effect ) are significantly higher compared to the existing reduction of dissipation flows and losses from them, and known transformers.