SU911677A1 - Device for charging reservoir capasitor - Google Patents

Description

(54) DEVICE FOR CHARGING ACCUMULATIVE

The invention relates to a pulse technique and is intended for use in electrical installations for various purposes, using the discharge capacitor capacitor, in particular for powering gas pulse-periodici lasers.

Devices for charging the storage capacitor from the current source are known, in which the charging capacitor is connected to the source through a rectifier and a matching transformer, and a thyristor switch consisting of two oppositely connected thyristors 1 is connected to the output of the source.

The main disadvantage of devices is a large variation in the amount of accumulated .OI energy, small The speed of connecting the load (storage capacitor) to the source, low operating frequency.

The closest in technical essence is a device for charging a storage capacitor, which contains an inductive-capacitive converter connected via a matching transformer and rectifier to a capacitive energy storage device, as well as a CODENSOR

the same forced switching node connected to the output of the current source through a rectifier. Uzbl forced switching consists of. main thyristor, auxiliary switching thyristor, switching capacitor, transformer, charging resistor and diode 2.

However, the known device has a low charge-discharge cycle rate.

The purpose of the invention is to increase the frequency of following charge-discharge cycles,

15

For this, a storage capacitor charging device containing an inductive-capacitive converter connected via a matching transformer and rectifier

Claims (2)

20 to a storage capacitor, a thyristor connected in parallel with the output of an inductive-capacitive converter through a second rectifier, parallel to the thyristor are connected after 25 successfully connected switching capacitor and switching thyriator, the secondary windings are introduced into the inductive-capacitive converter, through additional series-connected switches, and the thyristor is connected to the junction of the capacitor and the switching thyristor. The drawing shows the structural electrical circuit of the device for charging the storage capacitor. The device contains an inductive-bone converter 1, a matching transformer 2, rectifier 3, storage capacitor 4, secondary windings 5 of converter 1, second rectifier 6, thyristor 7, switching thyristor 8, switching capacitor 9, additional thyristor 10 , additional rectifier 1 The device operates as follows. The storage capacitor 4 is charged to a voltage determined by the external control device (not shown). In this case, a control signal is issued to unlock the thyristors 7 and 10. Thyristor 7, opening, 3: turns off the output of an inductive-capacitive converter, and the charge of storage capacitor 4 stops. Through the open thyristor 10, the rectifier 11 of the winding 5 of the inductive-capacitive converter, the open thyristor 7 charges the capacitor 9. When the maximum voltage on the capacitor 9 is reached, the current in the circuit is stopped and the thyristor 10 is closed. After discharge ... storage capacitor 4 to the load, the next charge cycle of storage capacitor 4 begins by applying a pulse to unlocking the thyristor 8. In this case, the condensate capacitor .9 discharges the thyristor 7 - thyristor 8. The current through the thyristor 7 decreases to zero, as a result, it closes and a new charge cycle of a capacitive storage begins. : Following frequency: charge-discharge cycles in the general case is determined by the formula c: trace Ч, where b is the charge, the charge time of the storage capacitor is 4; t-c is the charge time of the switching capacitor 9; Since the charge of the capacitor 9 comes from the converter of the direct current source, then ck-ck b. «. to “charge of condenser 9 charge; C | i g capacitor capacitance 9; J is the charging current of the capacitor 9. Therefore, choosing Ti is easy to get tK,., And “Thus, the operating frequency of the proposed device f; - A -, is completely determined by the charging capacitor charging time and does not require synchronization with the frequency supply network. -. . .V The use of additional windings 5 on preamplifier 1., to which co-capacitance capacitance 9 is connected at the moment when thyristor 7 is turned on / through additional expander 11 and thyristor 10, leads to detuning converter 1 from the resonant frequency, and consequently, to decrease transient time during the establishment of the charge current., in the storage capacitor 4, which further increases the frequency of charge-discharge cycles. Claim device Charging accumulator -. capacitor, containing an inductive-capacitive converter connected via a matching transformer and rectifier to a storage capacitor, a thyristor connected in parallel with the output of the inductive-capacitive converter through a second rectifier, parallel connected thyristor connected in series connected switching capacitor and commutating thyristor, about 50 km and a sensor that, in order to increase the frequency of charge-discharge cycles, secondary windings are introduced into the inductive-capacitive converter ki, which through an additional series-connected rectifier and. the thyristor is connected to the junction of the capacitor and the switching thyristor. Sources of information taken into account in the examination 1. Volkov H.H.i and others. Power sources of lasers, Kiev, Technique, 1976, p. 32, fig. five. 2. USSR author's certificate number 565388 / cl. And 03 K 3 / 53,1975 (prototype).