SU647666A1 - Dc stabilized voltage power supply source - Google Patents

Description

(54) POWER SUPPLY SYSTEM. STABILIZED

VOLTAGE VOLTAGE

nionic interference, improving the reliability and efficiency of the power supply system. This is achieved by the fact that the proposed system, the power supply, is supplied with a voltage boosting thyristor voltage regulator with a relay mode of operation, the control input of which is connected through an additionally introduced measuring element with its power input and the output of the voltage inhibit switch-on circuit of the voltage addition thyristor voltage regulator, with the input connected with one of the terminals for connection - load, the output of the command generation unit, through the additionally introduced first delay circuit with another control input switch of a tuning unit, the power circuit of which is made in the form of serially starting contacts and a limiting resistor, and through an additionally introduced second delay circuit with an output of the second stage turn-on stabilizer, the output of the switching unit being connected to the input of a booster thyristor voltage regulator, output connected to the stabilizer inputs first and second power-on queues.

In addition, in the power supply system, the output of each of the sensors controlling the output parameters of the stabilizers can be connected to the corresponding input of the command generation unit when using an optoelectronic pair.

The system can be equipped with a sensor monitoring the frequency of the supply source, connected between the output for connection to the supply source and the fifth input; home block formation teams.

The system can also be equipped with an ambient temperature sensor connected to the other input of the command generation unit.

In addition, a transistor voltage limiter can be entered into the system, an input m connected to the output of the DC voltage regulator of the first turn-on stage, and an output through the additionally introduced third delay circuit to the seventh input of the command generation unit.

The drawing shows a block diagram of the proposed power supply system.

The system contains a power circuit of a series-connected three-phase primary supply source 1 of alternating voltage, made, for example, in the form of a three-phase converter of the engine-generator type, the engine of which is powered from a 50 Hz network, and the generator outputs a voltage of 400 Hz, switching unit 2 simultaneously acting as an inrush current limiting circuit, a three-voltage booster thyristor voltage regulator, additionally acting as a non-contact switch, and constant and voltage regulators 4 and 5 zheygi respectively first and second queues incorporation boost control input of the thyristor regulator 3 via the measuring element 6 is connected to its power input. The boost-up thyristor controller 3 is equipped with a prohibition circuit 7, the input of which is connected via the command generation unit 8 to the control unit 9 of the system state during checkout and adjustment operations and the central control unit 10, as well as through the first delay circuit 11 to the input of the switching unit 2, the power circuit of which contains a limiting resistor 14 connected in series with the starting contacts 12 and 13 of the starting contactor, and through the second delay circuit 15 to the stabilizer 5 of the second voltage of the second turn no. The sensors 16 and 17 of the control of the output parameters of the stabilizers 4 and 5 of constant voltage with separate indicators "M (less) and" B (more) are connected to the command generation unit 8 through optoelectronic pairs 18 and 19. .. The sensors 16 and 17 control the output Stabilizer parameters are used to control stabilizers (control for decreasing and increasing output voltage). Optoelectronic pairs 18 and 19 are required for galvanic decoupling of direct current circuits. The sensor 20 for monitoring the frequency of the power source generates a signal to turn off the power system in the event of an emergency power failure at the output of the power source 1, which is characterized, first of all, by decreasing the frequency of the generator. The ambient temperature sensor 21, the input and output of which

5 is connected to a command generation unit 8, used to signal temperature exceeding in the digital computer power supply system. A transistor voltage limiter 22 connected to the output of the stabilizer 4 of the first turn-on voltage and through the third delay circuit 23 to the command generation unit 8 limits the voltage on the load 24 to no more than 7 V.

The stabilizer 4 of the direct voltage of the first turn-on stage is used, as a rule, to power the load 24 made in the form of microelectronic logic circuits (for example, of the type "Logic-2"). A constant-voltage stabilizer 5 of the second turn-on voltage is typically used for

0 powering ferrite random access memory (FIZU).

Sistema.ma works in the following way.

Claims (2)

1.Patent UK No. 1092273, cl. H 2 F, 1969. 2. Industry Standard OST 5.8001-70, M., 1970, p. 34