SU1350681A1 - Magnetomodulation transformer apparatus - Google Patents

Abstract

The invention relates to the field of electrical engineering, in particular, to magneto-modulating devices used in automation and secondary power sources. The purpose of the invention is to reduce losses in a transformer device. The device contains a primary source 1, an additional source of alternating voltage 2, terminals 3 of the power windings connected to the load, and counter-connected AC windings 4 and 5 located on the extreme rods of the planar three-core magnetic conductor 8. The average rod of the planar The magnetic circuit is made with a rassechka, in which the ring core is embedded, carrying two sections 11 and 12 of the control winding. A control current source 14 is connected to the control winding terminals 13. The primary source is connected by opposite poles 15 and 16 between successive power windings of the device, forming a feedback circuit 17. Q Since the modulation of the mode is carried out without putting the magnetic circuit into a saturation state, the level of losses due to magnetization reversal, as a result of which the losses in the transformer device decrease. 1 hp f-ly, 3 ill. (L FIG.

Description

The invention relates to electrical engineering, in particular, to magnetic modulation devices used in automation and secondary power sources.

The aim of the invention is to reduce losses in a transformer device, the mode of which is determined by the modulation of the magnetic flux.

FIG. 1 shows a circuit diagram of the device; in fig. 2 — device structure; in fig. 3 - time diagrams of the mode.

The device contains a primary source 1, an additional source of alternating voltage 2, terminals 3 of the power windings connected to the load and oppositely connected power windings 4 and 5 of alternating current located on the outermost rods x 6 and 7 of the planar three-rod magnetic circuit 8, Medium the rod 9 of the planar magnetic circuit 8 is made with a cut into which the ring core 10 is embedded, carrying two sections 11 and 12 of the control winding,

A control current source 14 is connected to the terminals 13 of the control winding. The primary source is connected by opposite poles 15 and 16 between the power supply windings of the device, forming a feedback circuit 17.

The device works as follows ,,,

Primary source 1 supplies AC power to the oppositely connected power windings 4 and 5. Power modulation in the load is accomplished by the combined action of a pulsed current source 14 connected to the control winding terminals 13, an additional voltage source 2 and a reverse circuit 17. connection formed by the poles 15 and 16 of the primary source and the counter-switching of the power windings 4 and 5 ". This circuit solution ensures the return of a part of the power flow from the primary source 1 to the load connected to the output m 3, therefore transformer device assembled on the yoke 8 together with the primary source forms an energy recovery circuit within which a flow Poynting changed sign. The modulation of the magnetic flux is provided by the action of the current source 14,

connected to the terminals 13 of the winding 11 12 control. The galvanic and transformer isolation of the power circuit of the windings 4 and 5 and the control circuit of the windings 11 and 12 is achieved by inserting into the dissect the middle core of the ring core tO carrying the two sections of the control winding.

The timing diagrams of the mode (FIG. 3) represent the voltage U at the poles of the primary source -1, the voltage on the terminals of the additional source 2, the currents i ,. in the control winding circuit, the voltage U at the load in modulation modes (in - frequency pulse modulation; d - pulse width modulation), a feature of the mode of operation is that the EMF of the additional source 2 is oriented opposite the EMF of the primary source 15 and the transformer link (windings 4, 5 and magnetic core 8) operates in the linear portion of the hysteresis loop. By appropriate selection of the ratios of the numbers of turns of the windings 4 and 5 and the ratios of the cross sections of the extreme and middle rods of the magnetic core 8, the device is switched to the relay amplifier mode.

The device can be used in high-frequency power systems with a metered power supply to the load. The positive effect is due to a decrease in the level of reversal magnetization losses, since the modulation of the mode is carried out without transferring the magnetic circuit to the full state;

Claims (2)

Invention Formula 1, a magnetically modulated tr. Modulator device containing a pliable three-core magnetic core, on the extreme rods of which there are alternating-current power windings, leads intended to connect the load, and a control winding consisting of two sections, differing in that , in order to reduce losses, it is equipped with an annular core and a modulating current source, the power windings are connected opposite, the terminals are connected in parallel to one of the power windings, the middle rod of the pannel magnetic circuit nen with crosscuts in which is embedded an annular core with a control coil connected to the modulating current source. 2. The device according to claim 1, wherein the circuit is connected to a power winding circuit with an additional alternating voltage source connected in series to the drives intended for connecting the load. one and iy but At /////////// At / L  t i i //  " but / at 0 / J FIG. 2 and  AND Compiled by V.xHisin Editor I.Nikolaychuk Tehred L.Serdyukova Proofreader M.Pojo Order 5286/49 Circulation 697 Subscription VNIRSHI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 . Production and printing company, Uzhgorod, Projecto st., 4