SU1383462A1 - H.v.pulse supply source - Google Patents

Abstract

The invention relates to high-voltage pulse technology and can be used to power electro-physical devices, in particular high-power electron injectors. The purpose of the invention is to improve the specific energy indicators of the device. High

Description

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The covolt pulsed power source contains n vent-capacitor chains 1 of two valves 2 and 3 connected in series and condenser 4. Capacitors 4 are connected in series and connected to terminals 5 and 6 of the device, 2p charge inductances 7 are connected in series and connected to unit 8 charge through the disconnecting switch 9, in parallel with which is connected the first valve-capacitor chain 1.

The remaining (p-1) chains 1 are connected to each midpoint of two series-connected charging inductances 7. Each subsequent valve-capacitor chain 1 is connected to the previous one through charging inductance 7. The resetting circuits 10, consisting of drossel 11 and gadget 12, are connected to odd or even capacitors 4 valve-capacitor chains 1. 1 Il.

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The invention relates to high-voltage impulse technology and may be used to power electrophysical devices, in particular high-power electron injectors, i The purpose of the invention is to improve the individual energy performance of the Device.

; The drawing is a schematic diagram of a high-voltage pulsed power source.

I The power supply contains a ventilator capacitor; chains 1 of the successively connected two veins 2 and 3 and the capacitor 4, the leads (which are connected to different fields of valve electrodes. All capacitors and valve-capacitor chains are connected in series and connected) to the output pins 5 and 6 of the device “There are gtva, one of which is grounded, and the common point of each adjacent pair of capacitors 4 is connected to one output of Two gates 2 and 3.

In addition, the source contains 2p charge inductors 7, which are connected in series 1 and connected to the charge unit 8 via a disconnecting switch 9, in parallel with which the first valve-capacitor chain 1 is connected, and the remaining n-1) valve-capacitor chains 1 are connected each to the middle point of two series-connected charge inductors 7, while each subsequent valve-capacitor chain 1 through the charging inductance 7 is connected with the previous one. Recharge circuits 10 are connected to the even (or odd) capacitors 4 of the valve-capacitor chains 1, which consist of Drossel 11 and the discharge switch 12.

The high-voltage switching power supply operates as follows.

In the closed position of the switch 9, the low-voltage charge unit 8 is turned on and magnetic energy is accumulated in a chain of 2-inductance inductances. The charge current rises to the value of i, and the amount of accumulated energy is determined by the expression 2п1-, d-1, where LO is the value of the charge inductance. The signal from the start-up unit triggers a disconnecting switch 9 and, in a chain of 2-pin inductances 7, a system of inverse electromotive effect is induced in relation to the direction of charge current ig. The value of each EMF is determined by the expression 1., where L is the inductances of the steps, if their values are chosen unequal. The action of EMF 1 causes the opening of the high-voltage valves 2 and 3 of all the valve-capacitor circuits 1.

In the process of unlocking the valves of the chains, a system of oscillating circuits is formed, in which the capacitors 4 are charged with a frequency ω determined by the values of inductances L | and containers C ,. During a quarter of the oscillation period in each circuit, the capacitors are charged to high voltage, the current in charge inductances 7 decreases to zero, and valves 2 and 3 are locked and hold a charge of capacitors A, If the number of valve-capacitor chains 1 even, then at the end of the charge, the potential of output 5 is almost equal to the potential of the earth, which is due to the opposite orientation of the voltages of each pair of capacitors in the series circuit. After the triggering of the arresters 12 of the recharge circuits 10, inversion 4 occurs on the respective capacitors, and a pulse is generated at the output of the device with amplitude n-lJ, where -U is the voltage on the intermediate-stage capacitor.

For the implementation of the frequency-pulse mode, gas-discharge devices controlled by a magnetic field can be used as a disconnecting switch, which ensures effective disconnection of circuits with currents of 1–10 kA at a level of restoring voltage up to 200 kV in a time equal to units of microseconds.

Claims (1)

Invention Formula A high-voltage switching power supply containing n valve-capacitor circuits of two valves connected in series and a capacitor, the terminals of which are connected to opposite-electrode electrodes of the valves, the capacitors n of the valve-capacitor chains are connected in series and connected to the output terminals of the device, while the common point of each adjacent pair of capacitors is connected to the unipolar outputs of the two valves, charging inductances and overcharging single circuits consisting of droplets and arresters connected to odd or even capacitors and valve-capacitor circuits, a charging unit, one output of which is connected to a common point It has a second charging inductance, and a valve of the first valve-capacitor chain, characterized in that, in order to improve specific energy indicators, additional charge inductances have been introduced, with 2-pin charging inductances interconnected in series and connected to the second valve of the first valve-capacitor chain and through the disconnecting switch are connected to the second output of the charging unit, and (n-1) the valve-capacitor chains are connected to the midpoint of two series-connected charge inducers ciency, wherein each subsequent valve-chain Sathorn capacitor through the charging inductance is connected to predschuschey.