SU942251A1 - High-voltage pulse generator - Google Patents

Description

(54) HIGH VOLTAGE PULSE GENERATOR

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This invention relates to technical means of electrical pulse technology, namely, devices for generating high voltage pulses of a microsecond range for any working (insulation t-gap).

High voltage pulses are known, which can be used to simultaneously act on several insulation (bit) slots connected to the GeBeTqpa output, which contains multiplication stages and an output unit made in the form of a multielectrode switch with a common electrode and output electrodes ij. t5

Ionization processes in all intervals develop in parallel, but as a result of static scatter, the breakdown usually ends in only one 20 interval. Since all the gaps are connected in parallel, the voltage at the output of the 1f generator is completely cut off, which prevents the development

The process in the other countries is its main disadvantage.

The closest to the proposed one is a pulsed pulse generator, assembled according to a multi-stage Arkad'ev Arks scheme, containing a charging device, capacitive energy storage, switches, charge-discharge impedances and loads in the form of discharge gaps, and to the capacitive storage device the stages are connected in parallel through the separating element /) cops additional capacitors 21.

A disadvantage of the known generator is the low discharge current that flows through each load. This is due to the fact that the capacity of each additional capacitor is a current limiter, i.e. small enough. Otherwise, after the breakdown of one of the 1-gap (on the contrary), the rest of the rest will be cut off. In addition, in a known ator gene, discharge currents and energies of 394 are distributed evenly across a nite british pattern from the static spread of the sample times and resistances of discharge gaps (loads). The purpose of the invention is to increase the discharge of the SOUTH, which is flowing through each interval: the gap (load), as well as to ensure a uniform distribution of current and energy across the discharge gaps. This goal is achieved by the fact that in a high-impulse pulse generator assembled by a multistage Arkadyev-Marx c) containing a charging device, capacitive energy storage devices, switches, charge-discharge impedances and loads in the form of gage gaps, as well as additional capacitors connected via separation elements parallel to the capacitive storage of the last stage, grounded electrodes of the discharge gaps are connected in pairs and connected to a grounded bus through a resistor high The voltage electrodes of each pair of gaps are connected to the terminals of one of the additional capacitors. The drawing shows a circuit diagram of a high voltage pulse generator. The pulse generator contains a booster warning device. 1 and a four-stage cascade, each stage of which consists of a capacitance-accumulator 2 of the energy of the spark switch 3 and warning elements 4. Parallel to the storage device 2 of the last stage, additional con- tactors are connected through separation resistors 5. Sensors 6, grounded electrodes of 7 discharge gaps are connected in pairs and through resistors 8 are connected to the ground bus 9. High-voltage electrodes 10-15 are connected to the terminals of one of the additional capacitors H groove 6. When the generator is connected to the mains from a rising flare-rectifier device The capacitor accumulators 2 are charged through circuit 1 of the charging elements 4, and additional capacitors 6 are charged through resistors 5. When a certain critical voltage level is reached at the accumulator 2 of the first stage, the switch 3 of the first stage bathes, and behind it the switches 3 in the second, third and fourth stages are sequentially turned on. After the last switch of switch 3 triggers on the high voltage electrodes of the Yu-15, 14 such words appear: A4 U, pa electrodes Yu, 12.1 14 (. PE electrodes 11, 13, 15. Consider the further operation of the generator using the example of electrode system 10 11 and their opposite 7. After the breakdown of one of the gaps, the resistance of the spark channel is kept sufficiently large, because the current through the spark channel is limited by the resistor 8. Therefore, the difference between the losses in the other gap is maintained almost unchanged until its breakdown. The capacitor 6, to the terminals of which electrodes 10 and 11 are connected, is discharged in a low-inductance circuit 6-10-7-7-11-6, causing the required, for example, technological effect in discharge gaps. Breakdown in the intervals of 7-10 tons 7 -11 does not entail a change in potential difference in the intervals of 12-7, 13-7, 14-7, 15-7. Resistors 8 after the discharge discharge intervals (loads) play the role of discharge resistances for the pulse generator, determining the duration of the pulses on the loads. Resistors 5 prevent the discharge of all capacitors 6 into one pair of discharge gaps. For the stable operation of all insulation gaps — the loads on the capacity of the additional capacitors are not imposed any restrictions. This makes it possible to select the capacitor 6 according to its capacity, which provides the necessary discharge current through the load. Discharge circuits, formed by loads and additional capacitors, do not include capacitive cascade energy storage devices, can be made low-capacitive due to their small spatial 15), which also contributes to an increase in discharge current. Each pair of gaps is connected in parallel to its additional capacitor fe, which allows for uniform distribution of the current. and, importantly, the energy released in discharge gfomezhuizah (loads). The advantages of the generator are most fully manifested when it is used in process plants for the destruction and processing of materials, where it is necessary to achieve large discharge currents (up to kA and more) with a uniform distribution of energy absorption parameters throughout all intervals. So, in electropulse technology for the destruction of mineral cf by pulsed electrical discharges I

Claims (1)

Claim The high-voltage pulse generator, assembled according to the multi-stage Arkadyev-Marx scheme, contains a charger, capacitive energy storage devices, switches, charge-discharge impedances and loads in the form of discharge gaps, and additional capacitive energy storage devices of the last degree are connected in parallel through the dividing elements capacitors, characterized in that, in order to increase the uniform distribution of the discharge current through the loads, the grounded electrodes of the discharge gaps are connected enes in pairs and connected to a grounded bus through a resistor, and the high voltage electrodes of each pair connected to terminals gaps One from the additional capacitors.