SU855881A1 - Induction-type contact-free current-collecting device - Google Patents

Description

one

The invention relates to electrical engineering. IL can be widely used in the production of information electric micromachines, such as sine-cosine rotary transformers, angle converters, etc.

Non-contact ring transformers used to iiaf, ss3iocrHi4KKpoHamiH are known. Magnetic circuits of these ring transformers are recovered from ferrite, which is N3 (1 induction is not more than 0.3 T if..

However, it is impossible to manufacture the magnetic circuits of ring transformers from any electrical steel that allows induction to 0.5-0.7 T, due to the complex configuration of the magnetic circuits. Magnetic conductors. Coil transformers made on ferrite have significant mass-dimensional indicators and moments of inertia of moving parts.

which is sometimes highly undesirable since this reduces the speed of micromaps & ampes and the accuracy of its efficiency decreases; about

The closest to the invention in its technical essence and the achieved result is a contactless current collection device containing a stator and a rotor, the windings of which are annular, and the rotor winding fastening element, as part of a ring of insulating material, covering the magnet and conductor of the stator 2,

However, this device does not provide the ability to work in the unlimited angle of rotation of the rotor, which removes the area of its application,

The purpose of the invention is to expand the scope and improve the speed of electrical machines with these induction devices.

38

This goal is achieved by the fact that the device is equipped with a hollow shaft on which the rotor magnetic core is installed, and one side of the stator windings is installed inside the hollow shaft.

FIG. 1 shows a device combined with an electric machine, a transverse section; in fig. 2 - parts of the magnetic circuit ..

The device contains an I electric power unit I intermediate covers 2 with bearings 3, a hollow shaft 4 on which the magnetic circuit 5 is rigidly fixed with windings b and 7 superimposed on it, interconnected by an electric jumper B. In the case of the electric machine the stator 9 magnetic circuit is rigidly fixed with the winding io. The gear wheel P is rigidly mounted on the hollow shaft, with which the gear wheel 2 is meshed. The latter is rigidly mounted on the output shaft 13. The output shaft rotates freely in the bearings 14 installed in the supports 15. The linear winding 16 is fixedly fixed and has output ends 37.

The device works as follows.

An alternating voltage is applied to the linear winding 16, as a result of which an alternating current passes through the winding, creating around itself an alternating magnetic field F, the direction of which is indicated in FIG. 1 and 2. The magnetic field F is scooped with a winding 7 and induces a transformer EMF in the latter. Since the winding 7 is electrically connected to the winding 6, an alternating current flows in the circuit of these windings, the value of which does not depend on the angle of rotation of the rotor. The output shaft 13 provides for the transmission of rotor movement to an external device,

There is no additional ferromagnetic core in the device to accommodate the ring winding 7 and therefore the speed increases. The device provides the ability to rotate the shaft at any unlimited angle.

Claims (2)

1. Khrushchev V.V. Electric micromachines of automatic devices. M.-L., Energie, 1976, p. 244245. 2. USSR author's certificate number 632037, cl. H 02 K 24/00, 1977.