SU1594669A1 - D.c. voltage converter - Google Patents

Abstract

The invention relates to electrical engineering and can be used in pulsed power systems. The aim of the invention is to increase the efficiency of the device. The constant voltage conversion device comprises a power source 1, a first switch 2, a first capacitor 3, a choke 4, a second switch 5, a load 6, a second, third, fourth capacitor 7-9, a pulse generator. The introduction of the second, third, fourth capacitors, as well as the switching of the keys after the termination of the flow of current through them, allows to reduce the power loss and increase the efficiency of the device. 1 il.

Description

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The invention relates to electrical engineering and can be used in pulsed power systems.

The aim of the invention is to improve the efficiency of the device.

The drawing shows a diagram of a constant voltage conversion device.

The device contains a source 1 pi-: tani, the first terminal connected to the first key 2, and the second terminal - to the first capacitor 3, connected in series with the choke 4,. : the second switch 5, the load 6, the second capacitor 7, the connected first switch and the connection point of the first controller: the capacitor and the throttles, the third and fourth; the last capacitors connected in series and connected parallel to the load, the first output

which is connected to the first key and the second through the second key to the second: source terminal, pulse generator 10, first output. connected to the control input of the first key, and the second to the control input of the second key.

The constant voltage conversion device operates as follows.

In the initial state, the capacitors 3 and 7 are charged from the power source 1. The voltage on each of them is equal to half the voltage of the current 1

. The pulse generator 10 controls the keys 2 and 5. The pulse from the first output of the generator 10 opens the key 2,

A constant voltage-1 above condenser pa 7 is applied to the loop circuits, consisting of capacitor 8, throttle A and load 6, capacitor 9 and throttle 4.

 With open key 2 in the circuit circuits, an oscillatory process takes place. At the same time, the current through key 2 due to self induction increases 4 from zero, and almost stops when charging the capacitors 8 and During the charging of the capacitor 9 through the load 6 positive current half-wave. At the point of connection of capacitors 8 and 9, a negative potential arises, which is equal to half the voltage of source 1.

As soon as the capacitors 8 and 9 completely charge, the impulse from the first output starts, the impulse starts from the second output of generator 10. As a result, key 2 closes and opens key 5. In loop circuits consisting of capacitor 9, throttle 4 and load 6 , capacitor 8 and throttle 4, the half-cycle of the oscillatory current process passes. At the same time, the current through the switch 5 due to self-induction of the chokes 4 increases, starting with zero, and practically stops when the capacitors 8 and 9 are recharged. During the recharging of the capacitor 8 a positive half-wave current passes through the load 6 again. At the common connection point of capacitors 8 and 9, a positive potential appears equal to half the voltage of source 1.

Then, when the currents in the circuit circuits also become equal to zero, the generator 10 closes the key 5 and opens the key 2. At the same time, the capacitors 8 and 9 recharge again, and the next current pulse flows through the load 6.

Keys 2 and 5 open at zero current in the loop circuits, so the power loss on the keys is insignificant.

Claims (1)

Invention Formula A constant voltage conversion device containing a power source, a first terminal connected to the first terminal of the first switch, and a second terminal to a first capacitor connected in series with the choke, a second switch, and a load that is different in order to increase efficiency Three capacitors are inserted - the second capacitor is connected between the first output of the first switch and the connection point of the first capacitor and the throttle, the second output of the throttle is connected to the connection point of the series-connected the third and fourth capacitors connected in parallel to the load, the first output of which is connected to the second output of the first key, and the second through the second switch to the second output of the power source.