SU668531A1 - Method for controlling multiple-gap discharge device - Google Patents

Abstract

THE METHOD OF CONTROL OF A MULTIPLE DISPOSAL by simultaneously applying control pulses to at least two interstitial electrodes, so that, in order to reduce the time lag and turn off the stability of operation in a wide range of operating voltages, the polarities of the specified control pulses are chosen opposite.

Description

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The invention relates to the field of electrical engineering and can be used to control switches in high-voltage impulse technology devices.

There is a known method for controlling a cascade discharge by applying a control pulse to an intermediate electrode located between the main electrodes. 3 The disadvantage of this control method is a limited range of voltage values in which the control of a voltage is possible, and a considerable response time and lag time of operation. This substation is a consequence of a limited amount of overvoltage, i.e. the ratio of the voltage applied to the gap to the voltage of the self-test of this gap, not exceeding two, at which the last breakdown of the gap breaks through.

A known method of controlling a cascade multielectrode gaiter in which control pulses of the same polarity are applied simultaneously to at least one intermediate electrode, and on the other intermediate electrodes the electric potential is maintained until the gap of adjacent gaps 2.

The disadvantage of this method of controlling a multielectrode gap is a sequence in the time of the sample for at least half of the intervals, which increases the response delay time and the spread of this time. In addition, the presence of devices that support the potential at the intermediate electrodes, which often use capacitance, retards the next intervals.

The closest of the known technical solutions to this proposal is a method for controlling a multi-gap discharge by simultaneously applying control pulses to at least two intermediate electrodes 3.

In this method, the same heavily damped two-pole pulse or, in words, having the form of a strongly damped sinusoid, i.e., are applied to the intermediate electrodes simultaneously through separation capacitors. to the intermediate electrodes at each particular time, a voltage of the same polarity is applied. Polarity change occurs after a certain period of time

simultaneously on all intermediate electrodes.

When using this method of controlling a multi-gap gage, the overvoltage required for the breakdown is created only in one spark gap, therefore the spark gaps are also punched sequentially in time.

The purpose of the invention is to reduce the lag time and increase the stability of operation in a wide range of operating voltages.

This is achieved by the fact that in the known control method of a multi-gap-1 gage by simultaneously applying control pulses, at least to two intermediate electrodes according to this invention, the polarities of said control pulses are opposite.

FIG. 1 shows one of the possible multi-gap gaps, which can be used to implement the proposed method; in fig. 2 is a plot of voltage distribution in the gaps of the gaiter before and after the arrival of the control pulses.

In a multi gap discharge containing two main electrodes 1 and several intermediate electrodes 2, several gaps are formed, which are subject to breakdown by control electric pulses 3 supplied by transmitting devices 4.

Control pulses are applied to the intermediate electrodes at the same time, and their polarity alternates. As can be seen from the voltage distribution in the gap of the discharge to (see pos. 5 in fig. 2) and after (see pos. B in fig. 2) the arrival of control pulses, an overvoltage is detected at each of the intervals, the sum of the amplitudes + U and - and the voltages on the adjacent electrodes forming this gap.

On the discharge as a whole, the voltage varies slightly. If the transmitting devices are such that during the breakdown of the gap, the overvoltage on the neighboring ones varies slightly / what is achieved if the transmitting devices. are, for example, long lines, the process of breakdown of the intervals will occur simultaneously with a small delay time and a small scatter of this time due to a large overvoltage. The last of the non-penetrated gaps is punched under the influence of the voltage Up applied to the main electrodes, but since each gap is a small part of the total spacing, it also breaks through with an overvoltage.

than a larger number of parts, the entire discharge distance is divided.

Thus, the proposed multi-electrode control method allows to increase the control accuracy of the discharge over a wide voltage range, which expands the range of application of the discharge.

Claims (1)

METHOD FOR MANAGING A MULTI-GAP DISCHARGE by simultaneously applying control pulses to at least two intermediate electrodes, characterized in that, in order to reduce the delay time and increase the response stability in a wide range of operating voltages, the polarities of these control pulses are chosen opposite. oo joint venture