SU1319004A1 - High-voltage stabilized source of d.c.(d.c.voltage) - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to remote power supply systems of unattended objects. The aim of the invention is to improve the reliability of power supply to consumers. If the device has two sources of power 6, 12 of direct current, the output voltages of which differ N times, and also when using diode elements 8.1-8. L OR, switching nodes 9.1--9./V and switches 10.1 -10 (L -1) it is possible to reliably reserve input supply circuits by automatically rebuilding the structure of the high voltage source. If the source 12 is operating at a high voltage, the power supply inputs of the power units 1.1 - .M are connected in series, and there is no consumption from the source 6. In the case of a voltage loss at the output of the source 12, the power supply of the circuit provides the source 6 with a lower voltage, and the power inputs of the power units 1.1 - M are connected in parallel. 2 h. item f-ly, 1 ill. with @ (O 00 with

Description

The invention relates to electrical engineering and is intended for use in the implementation of remote power supply of unattended amplifying points of long-distance multi-channel communication systems.

The aim of the invention is to improve the reliability of power supply to consumers.

The drawing shows a functional diagram of the device.

The high-voltage stabilized DC voltage source (current) contains power units 1.1-1./V, shunt diodes 2.1 and 2./V, connected in series between the terminals for connecting the load 3, blocks 4.1-4. M control, sensor 5 output stabilized parameter (voltage or current), the first source of 6 DC power supplies, sensors 7.1-7.N alarm signal, diode elements OR 8.1-8./V, nodes 9.1-9.L switching electronic keys 10.1-10. (; V-1), element 11, second DC power supply 12. Each of the nodes 9.1 to 9.L of switching includes an element YLI-NE 13 and an electronic switch 14. A DC power supply 12 includes an AC power supply 15, a rectifier 16, and a capacitor filter 17. Positions 18 and 19, the diagram shows the first and second input supply terminals of the power units 1.1-1.V, respectively, and the positions 20 and 21 indicate their first and second output terminals. Position 22 and 23 are assigned to the first and second input terminals of the diode elements OR 8.1-8. L /, and positions 24 and 25 - the potential output of the first and second inputs of nodes 9.1-9. L / commutation. The output voltage of the DC power supply 12 (the amplitude value of the voltage of the AC power supply source 15) is selected L times the output voltage of the DC power supply 6 of the source.

The first output pins 20 of the power units 1.1 - l.yV are connected to the first pins (anodes) of the corresponding 2.1-2.L diodes. Each of the blocks 4.1-4./VI control is made with N outputs connected to the control inputs of the corresponding power units 1.1 - l.N. The output of the sensor 5 of the output stabilized parameter is connected to the inputs of the 4.1-4.M control units. Sensors 7.1-7. L of the alarm signal are connected between the second output pins of the 21 power units 1.1 - 1. L and the second pins (cathodes) of the corresponding shunt diodes 2.1 - 2. L /. The first inputs (with potential outputs 24) of the 9.1-9./V switching nodes are connected to the outputs of the corresponding 7.1-7./V alarms sensors, the second inputs (with potential outputs 25) to the output of the HE element 11, and the outputs to the power supply the inputs of the corresponding power units 1.1 - 1 .. The first (negative

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polarities) the terminals of the sources 6 and 12 of the DC power supply are connected to each other, to the first input power output 18 of the power unit 1.1 and the first power supply

the conclusions of the keys 10.1 -10. (/ V-1), the second power outputs of which are connected to the first input supply output 18 of the respective power units 1.2-1.L, and the control inputs to the output of the HE element 11 connected to the output of the source 12 of the DC power supply.

The first input pins 22 of the diode elements OR 8.1-8. L are connected to the second (positive polarity) output of the DC power source 6. Second

5 input 23 and output pins of each of the diode elements OR 8.1-8. (. V - 1) are connected respectively to the first input supply terminal 18 of the subsequent one and the second input supply terminal 19 of the previous of the two adjacent power units. The second input 23 and output pins of the diode block OR 8./V. Are connected respectively to the second (positive polarity) output of the DC power supply 12 and the second input feed

5 output 19 power unit 1.L. In the DC power source 12, the AC power source 15, the rectifier 16 and the capacitor filter 17 are connected in series. In each of the nodes 9.1-9./V of the switching, the OR-HE 13 and the key 14 are connected in series, and the inputs of the OR- HE 13 are the inputs (with potential pins 24 and 25), and the output of the key 14 is the output of the switching node.

A high voltage stabilized DC voltage source (current) operates as follows.

In the absence of voltage at the output of the AC power supply source 15, there is no voltage at the output of the capacitor filter 17, which causes the signal "1" at the output of the element NOT 11, which is fed to the control inputs of the keys 10.1-10. (L / - one). The latter open and connect the input supply terminals 18 of the power units 1.2-1./V to the combined first terminals of the sources 6 and 12 of the DC power supply. The input supply terminal 19 of each of the power units 1.1-1./V through the corresponding of the diode elements OR 8.1-8. L turns out to be connected to the second output.

0 DC power supply 6. Thus, in the absence of a voltage at the output of the AC power supply 15, the power inputs of all power units 1.1-1./V are connected in parallel to the output of the DC power supply 6. In this case, the input supply pins 18 and 19 of each of the power units 1.1-1.V will have a voltage (source 6, for example, 24 V.). In addition to

In addition, the signal "1 from the output of the element NOT 11, arriving at the critical inputs (with potential terminals 25) of all nodes 9.1 - 9./V of the switching, blocks the latter, preventing the keys 14 from being opened.

4.1-4.M control blocks have a number of outputs equal to the number of power blocks 1.1-1, L, and the outputs corresponding to the same power block are connected in parallel and connected to the control input of this block. The inputs of all blocks 4.1–4M of control receive the same signal from the output of sensor 5 of the output voltage (current). All 4.1-4./M control units operate in parallel, but only one of them is driving, for example the one for which the control pulse appears earlier than the others. If all power units 1.1-l.yV are in operation, then the output voltage of each of them is less than its nominal value. In the event of the failure of one of the power units 1.1 - l.yV, the load current flows in the forward direction through one of the bypass diodes 2.1-2./H. Thanks to the common sensor 5 of the output voltage (current), the output signal of the blocks 4.1- 4.M control is changed in such a way that the output voltage of the remaining power units increases, and the output voltage (current) at load 3 (through load 3) remains unchanged. When one of the blocks 4.1–4M controls fails, the remaining control blocks ensure the normal operation of the device.

When there is voltage at the output of the AC power supply source 15, it is rectified by the rectifier 16, resulting in a constant voltage at the output of the capacitor filter 17 at the output of the source 15. For example, if the output of the source 15 has a alternating voltage of 220 V , then at the output of the filter 17 there is a constant voltage of 310 V. This voltage, acting on the input of the element NOT 11, causes the appearance of the signal "O" at its output. All keys 10.1 - 10. (L-I) are closed, and all power units 1.1 - l./V are connected in series with filter 10 and among themselves along the input supply terminals along the following circuit: the combined first terminals of sources 6 and 12 of the constant power supply current, input feed pin 18, output pin of a diode element OR 8.1, input pin 23 of a diode element OR 8.1, input feed pin 18 of a power unit 1.2, input feed pin 19 of a power block 1.2, output pin of a diode element OR 8.2, diode input pin 23 the element OR 8.2 and so on, the input pin 23 g of a diode OR gate 8. (N-1), the feeder terminal 18 of the power unit I.N, the input terminal 19 of power supply unit l.A, an output terminal of the diode element

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OR 8 .., the input terminal 23 of the diode element OR 8.L, the second terminal of the source 12 of the DC power supply. Since all power units 1.1 - 1./V are connected to the outputs in series with each other and the load 3, and the voltage at the output pins 20 and 21 of all the power blocks 1.1 - l./V are equal to each other, at their input supply terminals 18 and 19 The same voltages are set equal to the voltage at the output of the capacitor filter 17 divided by N. In the example shown, the input voltage 24 V is present at the input supply terminals 18 and 19 of each of the power units 1.1 - 1..V. Control of all power units 1.1 - l .. V with the help of 4.1-4.M control blocks It is the same as in the case of operation of the power units 1.1 - I .. V from the source 6 of the DC power supply, which in the presence of voltage at the output of the capacitor filter 17 is disconnected from the input terminals 18 and 19 of the power blocks 1.1 - 1. / V diode elements OR 8.1-8 .. V. The signal “O from the output of the element NOT 1 1 goes to the second inputs (with potential outputs 25) of all the nodes 9.1-9./V switching. If all power units 1.1 - 1.L are intact, then the output currents of the power blocks 1.1 - .M flow through the 7.1-7.L sensors of the alarm signal included in their output circuits. At the same time, at the output of each of the sensors 7.1-7. L, there is a signal "1, which is fed to the first input (with potential output 24) of the corresponding switching node. In this case, at the output of the element OR-NOT 13, there is a signal "O, the key 14 is closed and does not bypass the power input of the corresponding power unit. When any of the power blocks 1.1 - l .. V breaks down, for example 1.L, the sensor 7 .. V alarm signal included in its output circuit detects the absence of a current in this circuit and generates a signal “O, resulting in The output of the OR-NOT element 13 of the node 9 .. V switching signal appears, opening the key 14. Thus, when any of the power blocks 1.1-1-1 is broken down. Its output supply terminals 18 and 19 are shunted by the output the corresponding switching node, and the output voltage of the capacitor filter 17 is evenly redistributed between the remaining IMIS cn,: io- Vym blocks. At the same time, the voltage at the output supply terminals 18 and 19 of each of the power blocks 1.1 - L. V increases

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when a single power block fails, the voltage at the input supply terminals 18 and 19 of the remaining 12 power blocks increases by 1.08 times, reaching 26 V, which is about 8% more than the normal value. Further, the whole device functions in the same way as in the case of its operation from a source of direct current supply 6 at the exit of one of the power units 1.1 -. L /.

When the voltage at the output of the AC power supply 15 disappears, the constant voltage at the output of the capacitor filter 17 disappears, and the output of the NOT II element appears as a signal "1, opening all the keys 10.1-10. (L -1) and blocking all nodes 9.1-9. L switching. The DC power supply 6 through the diode elements OR 8.1-8.jV is connected to the input supply terminals 18 and 19 of the power units 1.1-1.L. The structure of the connection of the power units 1.1 - l.N is rebuilt according to the input supply terminals 18 and 19 from the series to the parallel one, and the entire high-voltage source of direct voltage (current) continues to function normally.

The ability to automatically reorganize the structure of a high voltage source of direct voltage (current) and the associated possibility of backing up the input supply circuits allow one to increase the reliability of power supply to nfi consumers.

Claims (3)

1. A high-voltage stabilized constant voltage source (current) containing / V power units, the first output terminals of which are connected to the first terminals of the corresponding nunciating diodes, are connected 1x in series between the terminals for connecting the load, M control units, each of which made with the / V outputs connected to the control inputs of the respective power units, the sensor of the output stabilized parameter, the output of which is connected to the inputs of the control units, the first power source constant current, characterized in that, in order to increase the reliability of power supply to consumers, N sensors of the alarm signal, V switching nodes, a NOT element, N OR diode elements, keys, and a second DC power source, with an output voltage, are introduced into it big times, you five 0 the voltage source of the first DC power source, the alarm signal sensors are connected between the second outputs, the outputs of the corresponding shunt diodes, the first inputs of the switching nodes are connected to the outputs of the corresponding alarm sensors, the second inputs are connected to the output of the HE element, and the the power inputs of the respective power units, the first terminals of the two sources of direct current power are connected to each other, to the first input power supply of the first power unit and the first power terminals of the keys, the second the power terminals of which are connected to the first input power output of the second and subsequent corresponding power units, and the control inputs to the output of the NOT element connected by the input to the output of the second DC power source, the first input terminals of the diode elements OR are connected to the second output of the first power source direct current, the second input and output terminals of each of the diode elements OR, with the exception of the V-ro element, are connected respectively to the first input power output of the next and second the input power supply terminal of the previous one of the two adjacent power units, and the second input and output terminals / V-ro diode unit OR is connected, respectively, with the second output of the second DC power supply and the second input power supply; . 2. The power source of claim 1, wherein the second DC power source consists of a series-connected AC power source with an amplitude value of the output voltage N times the output voltage of the first DC power source, rectified metel and condenser filter. 3. The source of claim 1, characterized in that each switching node consists of a series-connected element OR- and a key, the inputs of the first of which are inputs, and the output of the second is the output of this node. five five 0