SU1372387A1 - Transformer - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used in various units of electrical radio engineering devices. The purpose of the invention is to increase the dielectric strength of a high voltage transformer by reducing the own capacitance of the high voltage winding and uniformly distributing the potentials in it. The device consists of a set of multilayer sections 1, 2, 3, 4, 5, 6 located along the axis of the magnetic circuit 7 and connected in series as the section numbers increase. Each section 1, 2, 3, 4, 5, 6 is made in the form of n flat radial layers arranged one after the other along the axis of the magnetic circuit 7 in the direction of increasing section numbers; for odd sections, the layer follows one after another in the direction from 1 to 5, for even sections - in the direction from 2 to 6. If there is a voltage in each section and, then in each layer the potential difference is U / nB the last n layer of section 1 at points A and B, the potentials are equal to U / j UU / n and, respectively, and in the first layer adjacent to the first section of section 3 at points C and D, the potentials are and Ujj 2U + U / n, respectively. The potential difference between the end surfaces of adjacent sections is both + and / n. 2 Il. | sl with to with 00

Description

FIG. 2

The invention relates to electrical engineering and can be used in radio and electrical equipment, in particular for antenna matching in transmitters, in pulse modulators, in power sources and power converters.

The purpose of the invention is to increase the electrical strength of a transformer by reducing intersectional stresses.

FIG. 1 shows the proposed transformer; in fig. 2 - scan the device.

The transformer contains a high voltage winding, consisting of sections 1-6, wound on a toroidal core 7. The numbering of the windings reflects their alternate sequential connection in the order of 1, 2, 3, 4, 5, 6. The sections are located starting from the first, in the order of increasing odd numbers and subsequent decreasing of even numbers 1, 3, 5, 6, 2, 4. Each section is divided into radial layers arranged successively one after another in the direction of increasing H -lepOB sections; for odd sections, the layers follow one after another in the direction from 1 to 5, for even ones - in the direction from 2 to 6. As a special case, the layers may contain one turn each.

Consider two adjacent sections, for example, 1 and 3. Let the number of layers in a section be n. Then, in each layer, the potential difference is U / n. The last layer in section 1 has potentials and-and / n and and at points A and B, and the first layer of section 3 at points C and D - potentials 2 and and 2 and + and / p, respectively. The potential difference between the end surfaces of the sections is + and / and п and with a large η it tends to one second intersectional difference of the known transformer, which is

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It shows the presence of a positive effect.

Claims (1)

The present invention provides a reduction in the voltages operating between adjacent sections by almost two times, which is equivalent to an increase in the electrical strength of the proposed transformer by as many times without changing the characteristics of the INSULATION. An increase in the electrical strength of transformers is essential for devices operating at high voltages, as well as in micro-radio equipment, where in small intersectional and inter-turn gaps electric fields are formed with high voltages even at relatively low operating voltages. With the same electrical strength, the proposed transformer has a smaller size and weight and less consumption of materials in their manufacture. In addition, reducing the intersection voltage is equivalent to reducing the dynamic capacitance, which determines the possibility of expanding the operating frequency band of the transformers used in broadband radio equipment. A decrease in dynamic capacitance leads to a decrease in the level of interference emitted by the transformer. Formula invented shadows A transformer containing a magnet cable and a sectioned multilayer winding of high voltage with alternate sequential switching of sections, which are located along the axis of the magnetic circuit in order of increasing odd numbers and subsequent decreasing of even numbers, in order to increase the electrical strength of the transformer by reducing intersection stresses, each section is wound in the form of a series of flat radial layers arranged one after the other along the axis of the magnetic circuit in the direction of age tani section numbers.