SU758412A1 - Rotary transformer - Google Patents

Description

(54) ROTATING TRANSFORMER

I

The invention relates to electrical machines of automatic systems and computing.

A rotating transformer is known, having a rotor in the form of two packages and a stator in the form of one package, carrying concentric sinusoidally distributed windings 1.

The disadvantage of this rotating transformer is the uncertainty of the distribution of the windings in the grooves of the magnetic cores, as a result of which the quadrature windings have different parameters.

Rotating transformers are known, containing rotor and stator magnetic cores, carrying concentric quadrature windings whose axes are offset relative to the axis of one of the magnetic core teeth so that in the slots carrying sections of both quadrature windings, the inner part of the area is occupied by conductors of one winding (bottom layer), and the outer part of the area occupied by the conductors of the other winding (top layer) 2. In order to obtain the same quadrature winding parameters, the section conductors are distributed so that the position of the same quadrature sections

windings relative to the magnetic circuit were the same. For which, any of the concentric winding sections of one side lies in the lower layer of the groove, and the other in the upper layer of the other groove. This rotating

, the transformer is closest to the invention of the technical nature and the achieved result.

The disadvantage of this transformer is that such an arrangement of the sides of the sections of the concentric windings makes the parameters of the sides of the sections unequal, which leads to increased links between the quadrature windings, makes it possible to perform the windings only by laying the sections.

The aim of the invention is to improve the accuracy and simplify the winding work by automating the winding of rotating transformers.

Claims (1)

This is achieved by the fact that in the grooves of the magnetic cores carrying the conductors of both quadrature windings, both sides of quadrature winding sections in sectors ± 45 el. From axes of windings are placed in one, for example, lower layer of groove area, and both sides of the remaining sections of both quadrature windings are placed in another, for example, the top layer of the groove area. For multipolar rotary transformers having concentric quadrature windings, the angles indicated should be considered electrical. FIG. Figure 1 shows an example of the arrangement of sections of the concentric quadrature windings of the stator of a given rotating transformer; in fig. 2 shows part of the sections of the first quadrature winding; in fig. 3 - second square winding; in fig. 4 - the remaining sections of the first quadrature winding. The rotary transformer comprises a stator and a rotor with quadrature windings. In the slots of the stator magnetic circuit 1 -16 two quadrature shifted by 90 ° concentric sinusoidally distributed windings are placed. The axes of the quadrature windings are located relative to the axis of one of the teeth at an angle of 45 el. For a rotating transformer (VT) with concentric windings, the teeth of the magnetic cores of which must be a multiple of four, this is always doable. In this case, for magnetic cores with a number of grooves a multiple of the eight axis of the windings will coincide with the axes of symmetry of some teeth. With magnetic cores with the number of slots not multiple of the eight axis of the windings will coincide with the axis of symmetry of the slots of the magnetic cores. In this case, in the grooves coinciding with the axes of the windings, only the conductors of one of the quadrature windings will be located. The sides of the sections of the first quadrature winding (see Fig. 1) are not blackened and, conventionally, the direction of the current is indicated by a cross or a dot, and the connection of the sides of the sections is shown by a solid line. The location of the sections of the second quadrature winding is blackened, and the connection of the sides of the sections is shown by a dotted line. The sides of the sections of the first quadrature winding lying in the sector ± 45 el. hail from the axis of the first winding, lie in the inner (lower) layer of the groove area, and the rest in the outer (upper) layer of the groove area. The second square winding lies relative to the magnetic circuit in the same way, but with a shift on the axis of 90 °. This winding section in the sector ± 45 e. degrees from the axis of this winding lie in the lower part of the area of gases, and the remaining sections - in the upper. Similarly to the stator windings, sections of the quadrature rotor windings are placed. To implement such windings, a part of the first quadrature winding is first placed, lying in the lower layer of the grooves, these are the windings K a-Kz (see Fig. 2). Thereafter, the second quadrature winding is placed completely (see Fig. 3), and then the remaining sections of the first quadrature winding (see Fig. 4). Then Ki should be connected with Ka and Kz with K and the first quadrature winding with terminal C, C j, the Second quadrature winding will have terminals C 3, C 4. All sections of such windings are placed successively while laying into the grooves of both sides, allows them to be performed automatically or manually (coil by coil) instead of stacking sections. When performing multi-pole rotary transformers with concentric type windings, for each pair of poles, you can use the described design of a two-pole maschina, considering the angles in electric degrees. The device works in the same way as all rotary transformers. When voltage is applied to one of the VT windings (for example, a stator wedge), voltages are induced on the output rotor quadrature windings of the bullet, the magnitude of which, depending on the angular position of the rotor, is proportional to one winding sine and the other cosine of this angle. When the supply voltage is applied to the other quadrature stator winding, the output windings of the rotor will also induce voltages proportional to the sine and cosine of the angle of rotation of the rotor, but with a shift in the origin of the angle of 90 el. hail. Placing both sides of the sections at the same positions in the grooves creates a certain equal connection between the sides of the sections with the other quadrature winding and leads to an improvement in the accuracy of the BT due to a decrease in the quadrature connections between the windings, and a more specific arrangement of the axes of the windings gives better accuracy indicators of the asymmetry of zero provisions of the windings. In addition, this arrangement of the windings makes it possible to improve the layout of the windings along the frontal parts, which will lead to a decrease in the BT errors in the form of quadrature connections between the windings. Invention Rotating transformer containing the rotor and stator magnetic cores with concentric quadrature winding sections installed on them the axes of which are displaced relative to the axis of one of the teeth of the magnetic circuit by 45 °, the windings are laid in the grooves of the magnetic circuit by two layers, and in one layer of each groove there are conductors of one washing In order to improve accuracy and simplify winding operations, both sides of quadrature windings sections located in sectors ± 45 ° from the axes of the windings are placed in one, for example, lower layer of grooves, and the two sides of the remaining sections