SU1377841A1 - Stabilized power supply with redundancy - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to systems for controlling electrical quantities. The aim of the invention is to simplify the circuit, improve the weight and size characteristics and increase reliability. The introduction of the backup stabilizer 3 and the switching unit 8 made it possible, at the breakdown of one or all of the voltage regulators 1.2, with a simple circuit, to provide the load with a stable voltage. Block 7 control controls the health of stabilizers 1,2. 1 il.

Description

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The invention relates to electrical engineering, in particular, to systems for controlling electrical quantities, and can be used in power supply devices for electronic equipment.

The aim of the invention is to simplify the circuit, improve the weight and size characteristics and increase the reliability of the stabilized source.

The drawing shows; a voltage regulator with redundancy.

The stabilized redundant power source contains the first and second voltage regulators 1.2, the backup voltage regulator 3, all stabilizers include ft4 4, control unit 5, reference voltage unit 6, control unit 7, the three inputs of which connected to the inputs of filters 4, switching unit 8, one of the inputs of which is connected to the outputs of filters 4, the fourth and fifth inputs to the outputs of control unit 7, the sixth input is connected to the output of control unit 5, the seventh - to the input input one outputs of unit 8 switch and for the key to the control inputs of stabilizers}, 2 and 3, the other outputs - to the inputs of these stabilizers and another output connected to the output terminal, the fourth input

7 control is connected to the input output, and the fifth input - to the output output, to which the inputs of the control unit 5 and the B-switching unit are also connected.

Stabilized -source operates as follows.

When the power is turned on, the voltage from the input through the switching unit 8 is fed to the inputs of the stabilizers 1,2 and 3 connected in parallel, and from the outputs again through the switching unit 8 to the output. At the same time, the voltage is supplied to power the source 6 of the reference voltage, block

8Switches and block 7 controls. The operation of the stabilizers 1 and 2 is carried out by the control unit 5, comparing the output voltage with the voltage of the source 6 of the reference voltage. This difference, which is amplified in the amplifier of the control unit 5, is outputted through the switch unit S to the control inputs of the control unit.

congestion 1 and 2 to control the operation of the latter. At the same time, the output voltage of the device is kept stable with a given accuracy. The control of the operation of the device is carried out by the control unit 7, the outputs of which from the current sensors, which are the filters 4 of the stabilizers 1 and 2, receive the control voltage.

If all the stabilizers are intact, then the output of the control unit 7 is the signal O, which is fed to all the inputs of the switching unit 8. In the event of a malfunction in any stabilizer, the control unit 7 outputs a level 1 signal to the switch block 8 to switch off the failed stabilizer and turn on the backup stabilizer 3. With the backup stabilizer 3 turned on, the device continues to operate as with the standard stabilizer (1 or 2). The switching unit 8, the control unit 5 and the control unit 7 can be performed according to various known schemes.

Thus, “maintaining the backup stabilizer 3 and the switching unit 8 improves reliability, improves the weight and size characteristics, and simplifies the design of the device.

Claims (1)

Invention Formula A stabilized redundant power supply comprising first and second voltage regulators with filters, a control unit, a reference voltage source and a control unit, the first and second inputs of which are connected to the inputs of the first and second stabilizer filters, and a third input connected to connected to one of the terminals of the voltage reference block, the second terminal of which is connected to a common bus which is connected to the corresponding common terminals of the first and second stabilizers, the control block and the block The control, the first input of which is connected to the third output of the reference voltage block, characterized in that, in order to simplify the circuit, improve the weight and size characteristics and increase reliability, a backup voltage regulator is introduced and the switching unit whose first input is connected 3 13778А14 the third input of the control unit is the first and the third control outputs of which, the second and the third outputs are connected to the corresponding dyes of all stabilizers to the second one, the co-control outputs to the first and second inputs are connected to the corresponding ones the second, third and fourth inputs and the second control inputs of the switch unit, the fourth switching output connected to the first and which is connected to the point by the second output of the control unit, the output output of the fourth input whose input is connected to the input of a control unit and a second input .i d fnltra backup stabilizer control unit which vyhodomprichem corresponding to the Reserve terminals connected to the fourth input upraele-tion stabilizer and a switching unit switching unit, the first Auto-audio are connected to a common bus.