SU399976A1 - WINDING OF THE MULTIPOLUS SINUS-COSINUS ROTATING TRANSFORMER - Google Patents

Description

one

The invention relates to the field of electrical machinery of automatic systems and computer technology, in particular, to rotating transformers.

Known rotating transformers with distributed windings, with an uneven distribution of the numbers of turns in the slots, are characterized by a lower accuracy of the sine-cosine transform.

In order to increase the accuracy of the sine-cosine transformation, the winding of the proposed transformer is made with a certain number of repeating section groups, one of which is made with double claws, and the rest with a single one, the number of turns in the sections proportional to the sine of the angle, which is a function of the number of groups sections in the group and the number of teeth of the magnetic circuit, sanding the winding.

The drawing shows one of the windings of a rotating transformer for a sine or cosine transform.

Winding contains a 2 groups of sections. In each group there are three sections, with sections 1 and 2 being made with a clawed schag, and section 3 - with a double-toothed schagam.

The number of turns in the sections is proportional to

sin (2i - l),

where t is the section number in the group, counting the first section, covering two teeth;

2 - NUMBER of teeth of the magnetic circuit carrying the winding.

In this case, a 2,, so the number of turns in the sections will be proportional to -

for section 3

  sIn67,5

for section 1

sin --1 sin 22.5 8

FOR section 2

sin --Strain 67.5

At other numbers of the teeth of the magnetic circuit carrying the winding, the type of output windings will remain, only there will be a different number of groups and an even number of sections will be added in the groups covering one tooth. Moreover, the number a is chosen as the greatest common divisor of the number of teeth of the rotor and stator magnetic cores. The pattern of change in the number of turns in sections 5 is also preserved, only with a larger number of sections it will occur more smoothly.

For a rotating sine-cosine transformer, two identical windings are made, one of which is shown in the drawing and the other is shifted relative to the first one by 90 electrical degrees.

This shift can be obtained by shifting the axes of nearby sections of different windings, covering two teeth by an angle of 180,

- geometric degrees (reviewed

case at 90 °).

Subject invention

The winding of a multi-pole sine-cosine rotating rotary transformer with an uneven distribution of coils in sections, characterized in that, in order to improve the accuracy of the sine-cosic transformation, the winding contains repeated sections of sections, one of which is made with a double-toothed schag, and the rest are with a single, and the number of turns in the sections are proportional

90 ° a

(2 / -1).

sin

section number in the group, counting the first section, covering two teeth;

the number of teeth of the magnetic circuit carrying the winding.

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