SU828227A1 - Transformer converter - Google Patents

Description

devices), obtaining a locking force for “remembering the position of the core and increasing efficiency.

This is achieved by the fact that in a transformer converter containing a housing, measles, a magnetic circuit with primary and secondary windings located in it, measles is made in the form of a permanent magnet, around which there are no more than two magnetic conductive screens) spaced grooves.

FIG. 1 shows the construction of a transformer converter; in fig. 2, - distribution of magnetic fluxes in the magnetic core; in fig. 6 - output characteristic of the transformer converter; in fig. 4 - closed magnetic circuit (one of the options).

The ireo & razvovatel includes a housing 1 to which a closed magnetic conductor shield 2 and a closed magnetic conductor 6 are fastened, in which there are two narrow sections a. Primary 4 and secondary L windings are located on the magnetic core. An anchor b, made of a permanent magnet, is mounted on the rod 7, which moves along the guide body.

Transformer Converter works as follows.

A variable electrical signal is applied to the primary winding, creating an alternating magnetic flux F in a closed magnetic circuit (Fig. 2). At the same time, when the measles is inside the screen, the narrow sections of the magnetic circuit are not saturated, the magnetic flux F passes freely through the magnetic circuit and a full electrical signal is output in the secondary winding. When moving the core in the direction of the arrow r (Fig. 1), the permanent magnet emerges from the screen and enters inside the circuit of the magnetic circuit. The magnetic flux of the permanent magnet (Fig. 2), the exit from the north pole of the magnet (N), splits into two branches, passes through the magnetic conductor and closes at the south pole of the magnet (S). The flow of a permanent magnet, the passage through narrow areas a, saturates them, the magnetic resistance of the magnetic circuit increases dramatically, the magnetic flux Φ generated by the primary winding decreases to a minimum, and the electrical signal induced in the secondary winding also decreases to a minimum. The nature of the change in the output voltage bwyh (effective value) in function 5 of the displacement of the core (Fig. 3) has a clearly expressed relay form.

The nature of the change in output voltage as a function of moving the core also corresponds to FIG. 3

Due to the fact that the magnetic permeability in the magnetic circuit of the windings changes more dramatically when the material is saturated than the magnetic conductivity when gaps change (in known designs), it is possible to increase the slope of the output signal change along the core. Since the gaps between the core and the magnetic core are not in the magnetic circuit of the windings, this allows (due to the use of magnets with increased coercive force) to increase them while maintaining the size and output level of the transformer converter. This makes it possible to place a coil in said gaps. Since the magnetic conductivity of a permanent magnet

when inside the screen and inside the circuit of the magnetic circuit is maximum, and when moving from the cavity of the screen into the cavity of the magnetic circuit, it creates a minimum force that fixes measles in these

extreme positions The magnitude of the forces can be adjusted, for example, by changing the distance between the screen and the magnetic core. Possible design allowing

remove the windings from the zone of movement of the core and apply frame coils to the windings, which simplifies the manufacture of a transformer converter.

Also, since in a magnetic circuit

windings there are no air gaps, no-load current will be less, own losses will be less and efficiency will be higher.

Claims (2)

1. Babikov M. A., Kosinsky V. A. Elements and automation devices. - “Higher School, 1975. 2.Stoupel F. А. Electromechanical sensors and transducers of non-electrical quantities. - “Energy, 1965, p. 15-18, rice 1-76.