SU1234926A1 - Rotary transformer - Google Patents

Abstract

This invention relates to electrical mains used in automation. The purpose of the invention is to improve the accuracy. The transformer contains a magnetic core with an even number of slots, in which a concentric sinusoidal distributed winding is placed, containing sections. The sum of the numbers of turns of one pair of symmetrically located sections is an odd number and is determined by the expression H ent (2 W sinot + 0.5), and the number of turns in these sections is W; + 0.5, W. - 0.5, where Wj is the total number of turns of the two sections; V is the maximum possible number of turns in the groove; about / | - the angle of the i-ro slot relative to an arbitrarily chosen origin. Such a technical solution is especially effective when creating rotary transformers with low-impedance input resistance. 2 sh, I tabl. i (L to 00 4 ;; from to 05 (put, 2

Description

The invention relates to electrical machines of automatic systems and computing, in particular, to rotating transformers (BT).

The aim of the invention is to improve the accuracy.

Fig. 1 is a schematic diagram of the arrangement of nodes of the WT structure; figure 2 - scheme of the concentric winding.

W contains a magnetic core of stator 1 placed in a fixed case 2, and a magnetic core of rotor 3 placed on shaft 4 "On the magnetic conductors of the rotor and stator, two or one bipolar (P) concentric sinusoidally distributed windings 5 with symmetrically located sections W and W ,, W ,, W ,,.

In the well-known bipolar VTs,; They have concentric sinusoidally distributed windings, symmetrically sections that cover the same number of teeth, contain equal numbers of turns. In contrast, in a given BT, the number of turns of individual symmetric sections differ from each other by one turn. Unequal numbers of turns in symmetric sections are performed when, as a result of calculating the distribution of turns in the winding, it is found that the number of turns in symmetric sections should be close to W | + 0.5 (W; - turns of the i-th section, integer). The number of turns in one of the symmetrical sections is assumed to be W, and in the other - W - +1.

In sections in which the calculated value of the number of turns in the groove is closer to an integer than to W- + 0.5, equal values of the turns in both symmetric sections are taken.

Output voltage VT, due to the sequential VC of all seconds

Each of the sections of a pair of symmetrical sections actually creates the same definite law of mutual induction between these sections and another winding, but the amplitude of this law depends on the number of turns in the section. If sections are different in numbers

turns per unit, the law of mutual induction does not change, but the accuracy of approximation to the calculated one will be twice as high, since the total number of turns in two sections may be odd.

FIG. 2 is a schematic diagram of one concentric winding on a magnetic core having 2 slots, and the sections of the concentric winding are indicated.

An example of the calculation is shown in the table with the proportionality coefficient equal to 100.

As can be seen from the table for VT, the rounding of the calculated value of the turns is done with an accuracy of 0.5 turns. The turns in the sections for this example will be as follows:

five

0

five

O

55

71; 70;

W,

W,

 96; 26

and

w 26; w

W 97; W. ","

The accreteable technical solution is especially effective when creating low-impedance high-voltage superconductors. Creating high-frequency impedance when creating high-frequency power, when the number of conductors in the slots is small and the accuracy of rounding turns is decisive in the error of high-voltage.

When creating multipolar VTs, when there is a whole for one pair of poles, with an even number of magnetic grooves, this solution can be fully used for each pair of poles,

Claims (1)

Invention Formula A rotary transformer containing a magnetic core with an even number of slots, on which is located a concentric sinusoidal distributed winding containing symmetrically raskolochenk sections, characterized in that, in order to improve the accuracy, the sum of the numbers of turns of at least one pair of sim3123492 The metrically located-.ix section is an odd number and is defined by W ent (2 W sin 0,5), Sf the number of turns in these sections is equal to .5 w; - {0.5, w w: - - - 0.5, where W is the total number of turns two symmetrical sections; w is the maximum possible number of turns in the slot; w is the number of turns in a symmetrical I sections; N. - the angle of the i-ro slot relative to an arbitrarily chosen origin. ./