SU1617532A1 - Independent power supply system - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to autonomous power supply systems of automobiles with electromagnetic excitation generators. The aim of the invention is to increase the information content of a fault signal in an autonomous power supply system. The device contains a generator with an excitation winding and with main and additional rectifiers, a transistor voltage regulator with an output to the excitation winding of the generator, a test light, a voltmeter connected in parallel to the battery, and an alarm circuit. The device provides an alarm for a transistor switch in the excitation winding circuit in the form of a blinking indicator light. In case of breakage of the excitation winding, the signaling is carried out by the continuous illumination of the bulb. The use of a different mode of functioning of the light bulb guarantees informative signaling about faults. 1 il.

Description

The invention relates to electrical engineering, in particular, to autonomous power supply systems, for example, cars with electromagnetic excitation generators.

The aim of the invention is to increase the informativeness of the signal of a fault on an autonomous power supply system with an electromagnetic excitation generator.

The drawing shows a functional diagram of the proposed device.

The circuit contains a generator 1 with an excitation winding 2, an output output and an output 4 of the main rectifier, a plus 5 and a minus 6 power supply bus of the voltage regulator 7, containing the control circuit 8, the output transistor switch 9 and the suppressing diode 10, the input of circuit 8 control is connected to output 4 of the main straighteners of the gel generator. and its output is connected to the input of the output trncistor switch 9. connected between the negative bus 6 of the regulator and the anode of the damping diode 10 connected in parallel to the excitation winding 2. The control lamp 11 is connected via a switch to the output 4 of the main rectifier and the positive terminal of the battery 12, the negative terminal of which is connected to the negative bus 6 of the regulator and the common bus of the system. A voltmeter is connected in parallel with the battery 13. The signaling circuit 14 contains the first 15 and second 16 transistor switches with corresponding base and

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collector resistors, two diodes 17 and 18, element I19, controllable oscillator 20, element OR-NOT 21, element NOT 22, and a boundary resistor23. The emitter of the first transistor switch 15 is connected to the first terminal of the control lamp connected to the switch, and its base is connected to the positive controller bus 5, connected to the output of the additional rectifier 3 of the generator, to the cathode of the damping diode 10, to the second transistor emitter key 16 and the cathode of the first diode 17 of the signaling circuit 14, the anode of which is connected to the second terminal of the test light. The base of the second transistor switch 16 is connected via a resistor to the negative bus 6 and through the second diode 18, the cathode of which is connected to the base, to the output of the output transistor switch 9. The output of the control circuit 8 is connected to one of the inputs of the element E19, the second input of which the HE element 22 is connected to the collector of the second transistor switch 16 and through the collector resistor is connected to the common power bus, and the output of the AND 19 element is connected to the input of the control generator 20. The output of the generator 20 is connected to one of the inputs of the OR-HE element 21, the second input d is connected to the collector of the first transistor and the cancellation key 15 through its collector resistor - to the general power line, and its output through limiting resistor 23 is connected to the anode of the first diode 17 a signaling scheme.

In the absence of a fault, the voltage at the output terminals of the additional 3 and the main 4 generator rectifiers is the same and the lamp 11 does not light up due to the absence of a potential difference flowing through it. Voltmeter 13 indicates the nominal voltage. If there is a high potential at the output of the control circuit 8, the output transistor switch 9 is open and current flows at the excitation winding 2. The transistor switch 16 is open, and at its output a potential corresponding to 1 is established with respect to the minus bus. O is installed O at the output of the element 22. Consequently, O is set to the inputs of the element 19 1 and O, respectively. above the nominal output of the control circuit 8 is set to O, leading to locking the key 9 and establishing O on the collector of the transistor 16. As a result, the inputs of the element 19 will again be 1 and O, supporting zero at its output.

Suppose that at some point in time there was a break in the transistor switch 9. As the current through the excitation winding 2 in this case stops, the voltage at the outputs of the additional 3 and main 4 rectifiers of the generator will begin to decrease and the voltmeter 13 will show a reduced voltage. Although a high potential is established at the output of the control circuit 8, the key 16 on the transistor will be locked and. therefore, at the output of the element, HE 22 is set to 1. This will cause the 1 to be set at the output of the element AND 19, and the controlled generator 20 will begin to generate a sequence of pulses received at the input of the element OR NOT 19. Accordingly, the potential of its output will periodically receive zero values, and current pulses will flow through the light bulb 11, Bl blinking it, indicating a break in the output transistor switch 9.

If the excitation winding 2 is broken, the voltage at terminals 3 and 4 will also be lower than the nominal and, accordingly, the voltmeter 13 will indicate a low voltage. However, the key 16 on the transistor will be opened and a combination of O and 1 will be installed at the inputs of element 19, prohibiting the generation of pulses by generator 20 at the output of element 19, but due to a decrease below the nominal potential of bus 5, transistor 15 will open and from its collector to element OR-G will not arrive, causing a decrease in its output and, accordingly, the glow of the bulb 11, which indicates the breakage of the excitation winding 2. The intensity of the luminescence will be determined by the magnitude of the resistor 23 and will be less than with faults b1 | generator directors and short circuit of the field winding.

Thus, the proposed device provides informational signaling of faults, provided that one signal element is used.

Claims (1)

Invention Formula An autonomous power supply system containing an electromagnetic excitation generator with main and additional rectifiers, a voltage regulator, which includes a control circuit and an output transistor switch with an extinguishing diode, a control light, a plus and a minus bus connected to the common bus of the system. food controller, battery and voltmeter connected in parallel to the battery, the minus terminal of which is connected to the common bus of the system, and the positive terminal to the positive output of the main rectifier of the generator, to the input of the control circuit and through the switch to one of the outputs of the control lamp, with In this case, the output of the rectifier is connected to the plus supply bus of the regulator, to which one of the ends of the excitation winding and the cathode of the extinguishing diode are also connected, the anode of which and the second end of the excitation winding are connected to the output transistor. ornogo key switching the excitation winding with the negative bus, the input connected to the output control circuit of L and h and w conductive so. that, in order to increase the informativity of the malfunction signal, it introduced a signaling circuit including two diodes, two transistor switches on pnp transistors with basic and collector resistors, a NOT element, two-input AND and OR-NOT elements, a restrictive a resistor, a controlled oscillator, the output of which is connected to one of the inputs of the element OR NOT, the second input of the element OR is NOT connected to the collector of the first transistor key and through its collector resistor is connected to the common bus of the system, the base of the first transistor switch is connected to the plus power supply bus of the regulator through the base resistor the first diode of the signaling circuit, the anode of which is connected to the second output of the control bulb and through the limiting resistor to the output of the OR-NOT element, the emitter of the first transistor switch is connected to the first output of the control bulb, emit The second transistor switch ter is connected to the plus bus of the regulator; its base is connected via a resistor to the common bus and through the second diode, the cathode of which is connected to the base, to the output of the output transistor switch of the voltage regulator, and the collector of the second transistor switch through its collector the resistor is connected to the common bus and is NOT connected to one of the inputs of the element I, the second input of which is connected to the output of the control circuit of the regulator and the output of the element I to the input of the controlled generator.