SU29541A1 - Voltage doubling device - Google Patents

Description

The present invention consists in a special form of implementation of a device serving to double the voltage and is supplied from a three-phase network.

In FIG. 1 depicts the complete layout of the device; FIG. 2 is a diagram of the device; FIG. 3-curve power supply voltage.

Between each two phases of the source of 7, 2, 3 three-phase voltage (for example, a transformer connected by a star) are connected in series reactive coils 4, capacitors .5i, ЗЗ and 5z and rectifiers 6i, 62 and 6. To the heat circuit of each Of these rectifiers, through rectifiers 7, 7, 7, one of the poles of the use circuit 8 is connected (the X-ray tube is shown in the drawing), the other pole of which is also connected to the corresponding phases 7, 2, 3 of the voltage source through rectifiers 9, 9, 9. .

If at some initial moment between transformer phases 2 (fig. 1) there is a voltage a (fig. 3), then the capacitor 5i connected between these phases will be charged to a certain potential. At the same time, the same voltage will be applied to

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use circuit clamps connected in parallel with the capacitor. At the next moment, the voltage in (Fig. 3) between phases 1, 2, TA 1, 3 will be equal to each other and will be less than the voltage at the terminals of the capacitor connected between phases 1 to 2, as a result of which this capacitor will be discharged into the circuit use The voltage between phases 7 and 5 will not be able to charge the corresponding capacitor 5 to any significant potential, for the capacitor at this moment will be connected in series with a very significant resistance of the use circuit — in this example, as already indicated, an x-ray tube ./

Further, the voltage between phases 7 and 3 reaches a maximum with (Fig. 3), however, on the basis of the foregoing, the capacitor Z3 is not charged. Next time, the voltage d between phases 2 and 3 will begin to increase, and these phases will be connected to the terminals of the use circuit in series with the capacitor 5. As a result, a voltage equal to the sum between the phase voltage of 2 to 3 will be applied to the terminals of the use circuit. capacitor surge 5z. At the same time, capacitor 5 will be charged between the second and third phases. From this moment on, the double circuit will be continuously applied to the terminals of the circuit of use (for, minus rectifier losses, etc.) voltage, since at each given moment two corresponding phases of the transformer connected in series with the terminals will be connected to these terminals. one of the charged capacitors. FIG. 2 of the drawing shows a partial diagram of the device at the time corresponding to the supply of the total voltage from phases 2 and 5 and capacitor 5 to the terminals of the circuit 8. The signs - (- and - in this diagram show the instantaneous direction of the voltage.

For the next moment, for example, during the supply of the total voltage from phases / and 5 and the capacitor 5i to the terminals of the circuit, the direction of the instantaneous voltages shown in the c: 2) it will remain the same, and in order for this scheme to fully respond

the selected moment must be entered in, instead of phases 2 and 3, phases I and 3, capacitor 5i must be supplied instead of capacitor 5z, and capacitor 5z instead of capacitor 5i, etc.

The subject matter of the invention.

A device for doubling the voltage with a three-phase current supply, characterized in that between each two phases of the three-phase voltage source a capacitor connected to each other in series is connected to a rectifier circuit, each of which is connected to the heating circuit the second of the poles of which is connected via rectifiers with the phases of the voltage source with the aim of alternatingly charging and discharging the capacitors into the use circuit so that their voltage axis with voltage of three-phase current source.

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