CN211628028U - Power supply control device for generator set - Google Patents
Power supply control device for generator set Download PDFInfo
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- CN211628028U CN211628028U CN202020229994.5U CN202020229994U CN211628028U CN 211628028 U CN211628028 U CN 211628028U CN 202020229994 U CN202020229994 U CN 202020229994U CN 211628028 U CN211628028 U CN 211628028U
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Abstract
The power supply control device of the generator set comprises a power supply voltage stabilizing unit (1), a signal conditioning unit (2), a logic control unit (3), a driving unit (4) and an execution and indication unit (5). The signal conditioning unit comprises a voltage signal conditioning unit, a frequency signal conditioning unit and a rotating speed signal conditioning unit; the logic control unit completes specific logic processing and realizes specified functions in sequence. The device can automatically give out signals for starting, building voltage and outputting power transmission of the engine according to the input voltage signal, the input frequency signal and the input engine speed signal, and improves the automation degree of the generator set. The device is composed of hardware, does not need programming, is easy to implement, has lower cost, simple operation and excellent performance, and is suitable for automatic power supply control of the generator set driven by the engine.
Description
Technical Field
The invention relates to an automatic control device, in particular to a power supply control device of a generator set driven by an engine, belonging to the technical field of power supply control.
Background
The modern society can not keep away with electric energy, and the main source is the electric wire netting, also needs stand-by power supply when the electric wire netting can not guarantee the power supply or self has special power supply demand, sets up generating set and battery energy storage equipment as reserve and emergency power supply usually. For some mobile devices, it is also desirable to have a diesel or gasoline generator set to maintain power for a longer period of time.
In some important or special power utilization occasions, uninterrupted power supply is needed, uninterrupted power supply equipment is selected, and UPS, EPS and generator sets are determined and selected according to requirements of load properties, load capacity, time allowed for power interruption and the like.
The automatic operation of the power supply of the generator set can obviously shorten the conversion time of the power supply and is convenient for remote control operation. However, many generator sets driven by engines at present depend on manual control for starting and power supply conversion, and particularly, manual control on time of button operation is not accurate enough, so that adverse effects on the generator sets are possibly caused.
At present, some generator set power supply technologies with automatic operation function exist, but the structure is complex, the cost is high, some operation is complex, and the performance is poor.
Disclosure of Invention
The invention aims to provide a power supply control device of a generator set, which has a simple structure and is easy to implement, automatically gives signals for starting, building voltage and outputting power transmission of an engine according to an input voltage signal, a frequency signal and an engine rotating speed signal, improves the automation degree of the generator set, is completely composed of hardware, is easy to manufacture, has lower cost, is simple to operate, has excellent performance and is suitable for the generator set driven by a diesel or gasoline engine.
The invention is realized by the following steps: generating set power supply control device, its characterized in that includes: the device comprises a power supply voltage stabilizing unit (1), a signal conditioning unit (2), a logic control unit (3), a driving unit (4) and an execution and indication unit (5);
the power supply voltage stabilizing unit (1) is electrically connected with the signal conditioning unit (2), the logic control unit (3), the driving unit (4) and the execution and indication unit (5) to provide stable working voltage for each unit;
the signal conditioning unit (2) is electrically connected with the power supply voltage stabilizing unit (1) and the logic control unit (3) and provides a proper input state signal for the logic control unit (3);
the logic control unit (3) is electrically connected with the power supply voltage stabilizing unit (1), the signal conditioning unit (2) and the driving unit (4);
the driving unit (4) is electrically connected with the power supply voltage stabilizing unit (1), the logic control unit (3) and the execution and indication unit (5).
Furthermore, the signal conditioning unit (2) comprises a voltage signal conditioning unit (21), a frequency signal conditioning unit (22) and a rotating speed signal conditioning unit (23);
the voltage signal conditioning unit (21) gives a voltage state signal of the generator in real time according to the input generator voltage signal and is electrically connected with the logic control unit (3); when the voltage of the generator is normal, outputting a low level; when the voltage of the generator is under-voltage or overvoltage, outputting high level;
the frequency signal conditioning unit (22) gives a frequency state signal of the generator in real time according to the input generator frequency signal and is electrically connected with the logic control unit (3); when the frequency of the generator is normal, outputting a high level; when the frequency of the generator is abnormal, outputting a low level;
the rotating speed signal conditioning unit (23) gives a rotating speed state signal of the engine in real time according to the input rotating speed signal of the engine and is electrically connected with the logic control unit (3); when the engine is started successfully, outputting a high level; when the engine start is unsuccessful, a low level is output.
The output control signals of the logic control unit (3) comprise starting, voltage building and power transmission output signals.
Further, when the starting signal output by the logic control unit (3) is at a high level, a starter of the engine is connected with a storage battery to be powered on for working; when the starting signal is at low level, the starter of the engine is powered off and stops working;
when the voltage building signal output by the logic control unit (3) is at a high level, a voltage building loop of the generator set is switched on, and the generator starts to build voltage; when the voltage building signal is at a low level, a voltage building loop of the generator set is disconnected;
when the power transmission signal output by the logic control unit (3) is at a high level, the generator set outputs voltage to a load; when the power transmission signal is at a low level, the generator set stops supplying power to the load.
The invention has the advantages and effects that:
(1) the system can automatically give out signals for starting, building voltage and outputting power transmission of the engine according to the input voltage signal, the input frequency signal and the input engine speed signal, and improves the automation degree of the generator set.
(2) The device is composed of hardware, does not need programming, is easy to implement, has lower cost, simple operation and excellent performance, and is suitable for automatic power supply control of the generator set driven by the engine.
(3) The logic control unit is composed of basic logic gate circuit, and feedback loop is arranged in the logic control unit to replace integrated circuit with counter, register and pulse sequence distributor for memorizing input information, so that complexity of the device is reduced.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the power supply voltage stabilizing unit according to the embodiment.
Fig. 3 is a logic circuit schematic of the logic control unit of the embodiment.
Fig. 4 is a schematic diagram of a circuit actual connection of the signal conditioning unit and the logic control unit according to the embodiment.
FIG. 5 is a schematic diagram of the circuit connection between the driving unit and the execution and indication unit according to the embodiment.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the power supply control device for a generator set includes a power supply voltage stabilizing unit (1), a signal conditioning unit (2), a logic control unit (3), a driving unit (4), and an execution and indication unit (5); the power supply voltage stabilizing unit (1) is electrically connected with the signal conditioning unit (2), the logic control unit (3), the driving unit (4) and the execution and indication unit (5) to provide stable working voltage for each unit; the signal conditioning unit (2) is electrically connected with the power supply voltage stabilizing unit (1) and the logic control unit (3) and provides a proper input state signal for the logic control unit (3); the logic control unit (3) is electrically connected with the power supply voltage stabilizing unit (1), the signal conditioning unit (2) and the driving unit (4); the driving unit (4) is electrically connected with the power supply voltage stabilizing unit (1), the logic control unit (3) and the execution and indication unit (5).
The signal conditioning unit (2) comprises a voltage signal conditioning unit (21), a frequency signal conditioning unit (22) and a rotating speed signal conditioning unit (23), and the signal conditioning unit can be realized by a person skilled in the art by using a conventional technical means according to a signal function specification;
the voltage signal conditioning unit (21) gives a voltage state signal of the generator in real time according to the input generator voltage signal and is electrically connected with the logic control unit (3); when the voltage of the generator is normal, outputting a low level; when the voltage of the generator is under-voltage or overvoltage, outputting high level; the frequency signal conditioning unit (22) gives a frequency state signal of the generator in real time according to the input generator frequency signal and is electrically connected with the logic control unit (3); when the frequency of the generator is normal, outputting a high level; when the frequency of the generator is abnormal, outputting a low level; the rotating speed signal conditioning unit (23) gives a rotating speed state signal of the engine in real time according to the input rotating speed signal of the engine and is electrically connected with the logic control unit (3); when the engine is started successfully, outputting a high level; when the engine start is unsuccessful, a low level is output.
The output control signals of the logic control unit (3) comprise starting, voltage building and power transmission output signals.
When the starting signal is at a high level, a starter of the engine is connected with a storage battery to be powered on for working; when the starting signal is at low level, the starter of the engine is powered off and stops working; when the voltage building signal is at a high level, a voltage building loop of the generator set is switched on, and the generator starts to build voltage; when the voltage building signal is at a low level, a voltage building loop of the generator set is disconnected; when the power transmission signal is at a high level, the generator set outputs voltage to the load; when the power transmission signal is at a low level, the generator set stops supplying power to the load.
Referring to fig. 2, the power supply voltage stabilizing unit includes a starter battery BT1, a switch S1, capacitors C1, C2, C3, a voltage stabilizing integrated circuit U1, and a voltage stabilizing integrated circuit LM7809 for U1, wherein after the switch S1 is closed, the voltage of the starter battery is input from the 1 st pin, and the VCC voltage of 9V is output from the 3 rd pin for other units.
The generator set comprises an engine, a generator, a control box or a control screen.
Referring to fig. 3, the VCU in the figure is a voltage signal conditioning unit of the generator set, and provides a voltage status signal of the generator in real time according to an input voltage signal of the generator, wherein a outputs a low level when the voltage of the generator is normal, and a outputs a high level when the voltage of the generator is under-voltage or over-voltage.
The FCU is a frequency signal conditioning unit of the generator set, and gives a frequency state signal of the generator in real time according to an input frequency signal of the voltage of the generator, when the frequency of the generator is normal, the B outputs a high level, and when the frequency of the generator is abnormal, the B outputs a low level.
RSCU is a rotational speed signal conditioning unit of the generator set, gives a rotational speed state signal of the engine in real time according to an input engine rotational speed signal, and outputs a high level when the engine is started successfully; when the engine start is unsuccessful, C outputs a low level.
The logic control unit comprises 4 inverters F1-F4, 4 2 input OR gates H1-H4, and 7 2 input AND gates Y1-Y7; according to the input A, B, C signal, after specific logic processing, starting, voltage building and power transmission control signals are output; when the starting signal Z1 is at a high level, the starter of the engine is connected with the storage battery to be powered on to work, and when the starting signal Z1 is at a low level, the starter of the engine is powered off to stop working; when the voltage building signal Z2 is at a high level, a voltage building loop of the generator set is switched on, the generator starts building voltage, and when the voltage building signal Z2 is at a low level, the voltage building loop of the generator set is switched off; when the power transmission signal Z3 is at a high level, the genset outputs a voltage to the load, and when Z3 is at a low level, the genset stops supplying power to the load.
The logic control unit completes specific logic processing and realizes specified functions in sequence, and the connection method is as follows: the signal A is respectively connected with the input end of the inverter F1, the 2 nd input end of the AND gate Y2 and the 1 st input end of the AND gate Y5;
the signal B is respectively connected with the input end of the inverter F4, the 2 nd input end of the OR gate H2, the 2 nd input end of the AND gate Y1 and the 1 st input end of the AND gate Y2;
the signal C is respectively connected with the input end of the inverter F2 and the No. 2 input end of the AND gate Y4;
the signal Z1 is connected to the output of OR gate H4;
the signal Z2 is connected with the output end of the AND gate Y6;
the signal Z3 is respectively connected with the 1 st input end of the OR gate H1 and the output end of the AND gate Y1;
the output end of the inverter F1 is connected with the 1 st input end of the AND gate Y1;
the output end of the AND gate Y2 is connected with the 1 st input end of the AND gate Y6;
the output end of the AND gate Y5 is connected with the 1 st input end of the OR gate H4;
the output end of the inverter F3 is connected with the 2 nd input end of the AND gate Y6;
the output end of the inverter F4 is connected with the 2 nd input end of the AND gate Y7;
the output end of the OR gate H3 is connected with the 1 st input end of the AND gate Y7;
the 2 nd input end of the OR gate H4 is connected with the output end of the AND gate Y7;
the output end of the inverter F2 is connected with the 2 nd input end of the OR gate H3;
the output end of the AND gate Y3 is connected with the 2 nd input end of the OR gate H1;
the output end of the AND gate Y4 is connected with the 1 st input end of the OR gate H2;
the 1 st input end of the AND gate Y3 is connected with the 2 nd input end of the AND gate Y5, the input end of the inverter F3 and the output end of the OR gate H1;
the 2 nd input of the AND gate Y3 is connected to the 1 st input of the AND gate Y4, the output of the OR gate H2, or the 1 st input of the OR gate H3.
With further reference to fig. 4, the logic control unit includes digital integrated circuits U2-U5, wherein U2 is a six-inverter, model is CD4069, U3 is a four 2-input or gate, model is CD4071, U4, U5 are four 2-input and gates, model is CD 4081;
the connection method of the logic control unit comprises the following steps: the signal A is respectively connected with the 1 st pin of U2, the 6 th pin of U4 and the 5 th pin of U5;
the signal B is respectively connected with the 9 th pin of U2, the 6 th pin of U3, and the 2 nd and 5 th pins of U4;
the signal C is respectively connected with the 13 th pin of U2 and the 13 th pin of U4;
the signal Z1 is connected with the 11 th pin of U3;
the signal Z2 is connected with the 3 rd pin of U5;
the signal Z3 is respectively connected with the 1 st pin of U3 and the 3 rd pin of U4;
the 4 th pin of U4 is connected with the 1 st pin of U5;
the 4 th pin of U5 is connected with the 12 th pin of U3;
the 4 th pin of U2 is connected with the 2 nd pin of U5;
the 8 th pin of U2 is connected with the 9 th pin of U5;
the 10 th pin of U3 is connected with the 8 th pin of U5;
the 13 th pin of U3 is connected with the 10 th pin of U5;
the 12 th pin of U2 is connected with the 9 th pin of U3;
the 10 th pin of U4 is connected with the 2 nd pin of U3;
the 11 th pin of U4 is connected with the 5 th pin of U3;
the 8 th pin of the U4 is connected with the 6 th pin of the U5, the 3 rd pin of the U2 and the 3 rd pin of the U3;
the 9 th pin of U4 is connected to the 12 th pin of U4, the 4 th pin of U3, and the 8 th pin of U3.
The 5 th pin, the 7 th pin and the 11 th pin of the U2 are connected to GND, and the 14 th pin is connected to VCC;
With further reference to fig. 5, the drive unit includes an integrated circuit U6, model DS 2003;
the execution and indication unit comprises coils of relays KJ 1-KJ 3 and normally open contacts thereof, resistors R10-R13 and light emitting diodes D4-D7;
one end of a coil of the relay KJ1 is connected to a power supply VCC, the other end of the coil is connected to the 16 th pin of U6 and the cathode of the light emitting diode D5, and a normally open contact of the KJ1 is connected with a contact of a starting button of the generator set in parallel;
one end of a coil of the relay KJ2 is connected to a power supply VCC, the other end of the coil is connected to the 13 th pin of U6 and the cathode of the light emitting diode D6, and a normally open contact of the KJ2 is connected with a press button contact of the generator set in parallel;
one end of a coil of the relay KJ3 is connected to a power supply VCC, the other end of the coil is connected to the 11 th pin of the U6 and the cathode of the light emitting diode D7, and a normally open contact of the KJ1 is connected in series with an output contactor coil of the generator set to control the voltage output of the generator set.
The LED D4 is used for indicating power supply, and the resistor R10 is a current-limiting resistor of D4; the light-emitting diode D5 is used for indicating the work of the starter, and the resistor R11 is a current-limiting resistor of D5; the LED D6 is used for voltage build-up indication, and the resistor R12 is a current-limiting resistor of D6; the light emitting diode D7 is used for indicating the output to the load, and the resistor R13 is a current limiting resistor of D7.
In the schematic diagrams of fig. 2-5, the same electrical network numbers or ports are in electrical communication.
Claims (7)
1. Generating set power supply control device, its characterized in that includes: the device comprises a power supply voltage stabilizing unit (1), a signal conditioning unit (2), a logic control unit (3), a driving unit (4) and an execution and indication unit (5);
the power supply voltage stabilizing unit (1) is electrically connected with the signal conditioning unit (2), the logic control unit (3), the driving unit (4) and the execution and indication unit (5) to provide stable working voltage for each unit;
the signal conditioning unit (2) is electrically connected with the power supply voltage stabilizing unit (1) and the logic control unit (3) and provides a proper input state signal for the logic control unit (3);
the logic control unit (3) is electrically connected with the power supply voltage stabilizing unit (1), the signal conditioning unit (2) and the driving unit (4);
the driving unit (4) is electrically connected with the power supply voltage stabilizing unit (1), the logic control unit (3) and the execution and indication unit (5).
2. The power supply control device of the generator set according to claim 1, characterized in that the signal conditioning unit (2) comprises a voltage signal conditioning unit (21), a frequency signal conditioning unit (22) and a rotating speed signal conditioning unit (23);
the voltage signal conditioning unit (21) gives a voltage state signal of the generator in real time according to the input generator voltage signal and is electrically connected with the logic control unit (3); when the voltage of the generator is normal, outputting a low level; when the voltage of the generator is under-voltage or overvoltage, outputting high level;
the frequency signal conditioning unit (22) gives a frequency state signal of the generator in real time according to the input generator frequency signal and is electrically connected with the logic control unit (3); when the frequency of the generator is normal, outputting a high level; when the frequency of the generator is abnormal, outputting a low level;
the rotating speed signal conditioning unit (23) gives a rotating speed state signal of the engine in real time according to the input rotating speed signal of the engine and is electrically connected with the logic control unit (3); when the engine is started successfully, outputting a high level; when the engine start is unsuccessful, a low level is output.
3. The power supply control device for the generator set according to claim 1, characterized in that the output control signals of the logic control unit (3) comprise startup, voltage build-up and output power transmission signals.
4. The power supply control device of the generator set according to claim 1, characterized in that when the starting signal output by the logic control unit (3) is high level, a starter of the engine is connected with a storage battery for power-on operation; when the starting signal is at low level, the starter of the engine is powered off and stops working;
when the voltage building signal output by the logic control unit (3) is at a high level, a voltage building loop of the generator set is switched on, and the generator starts to build voltage; when the voltage building signal is at a low level, a voltage building loop of the generator set is disconnected;
when the power transmission signal output by the logic control unit (3) is at a high level, the generator set outputs voltage to a load; when the power transmission signal is at a low level, the generator set stops supplying power to the load.
5. The power supply control device of the generator set according to claim 1, wherein the logic control unit comprises 4 inverters F1-F4, 4 2-input OR gates H1-H4, and 7 2-input AND gates Y1-Y7; the connection method comprises the following steps: the signal A is respectively connected with the input end of the inverter F1, the 2 nd input end of the AND gate Y2 and the 1 st input end of the AND gate Y5;
the signal B is respectively connected with the input end of the inverter F4, the 2 nd input end of the OR gate H2, the 2 nd input end of the AND gate Y1 and the 1 st input end of the AND gate Y2;
the signal C is respectively connected with the input end of the inverter F2 and the No. 2 input end of the AND gate Y4;
the signal Z1 is connected to the output of OR gate H4;
the signal Z2 is connected with the output end of the AND gate Y6;
the signal Z3 is respectively connected with the 1 st input end of the OR gate H1 and the output end of the AND gate Y1;
the output end of the inverter F1 is connected with the 1 st input end of the AND gate Y1;
the output end of the AND gate Y2 is connected with the 1 st input end of the AND gate Y6;
the output end of the AND gate Y5 is connected with the 1 st input end of the OR gate H4;
the output end of the inverter F3 is connected with the 2 nd input end of the AND gate Y6;
the output end of the inverter F4 is connected with the 2 nd input end of the AND gate Y7;
the output end of the OR gate H3 is connected with the 1 st input end of the AND gate Y7;
the 2 nd input end of the OR gate H4 is connected with the output end of the AND gate Y7;
the output end of the inverter F2 is connected with the 2 nd input end of the OR gate H3;
the output end of the AND gate Y3 is connected with the 2 nd input end of the OR gate H1;
the output end of the AND gate Y4 is connected with the 1 st input end of the OR gate H2;
the 1 st input end of the AND gate Y3 is connected with the 2 nd input end of the AND gate Y5, the input end of the inverter F3 and the output end of the OR gate H1;
the 2 nd input of the AND gate Y3 is connected to the 1 st input of the AND gate Y4, the output of the OR gate H2, or the 1 st input of the OR gate H3.
6. The power supply control device of the generator set according to claim 1, wherein the logic control unit comprises digital integrated circuits U2-U5, wherein U2 is a six-phase inverter, the model is CD4069, U3 is a four 2-input OR gate, the model is CD4071, U4 and U5 are four 2-input AND gates, the model is CD 4081;
the connection method comprises the following steps: the signal A is respectively connected with the 1 st pin of U2, the 6 th pin of U4 and the 5 th pin of U5;
the signal B is respectively connected with the 9 th pin of U2, the 6 th pin of U3, and the 2 nd and 5 th pins of U4;
the signal C is respectively connected with the 13 th pin of U2 and the 13 th pin of U4;
the signal Z1 is connected with the 11 th pin of U3;
the signal Z2 is connected with the 3 rd pin of U5;
the signal Z3 is respectively connected with the 1 st pin of U3 and the 3 rd pin of U4;
pin 2 of U2 is connected to pin 1 of U4;
the 4 th pin of U4 is connected with the 1 st pin of U5;
the 4 th pin of U5 is connected with the 12 th pin of U3;
the 4 th pin of U2 is connected with the 2 nd pin of U5;
the 8 th pin of U2 is connected with the 9 th pin of U5;
the 10 th pin of U3 is connected with the 8 th pin of U5;
the 13 th pin of U3 is connected with the 10 th pin of U5;
the 12 th pin of U2 is connected with the 9 th pin of U3;
the 10 th pin of U4 is connected with the 2 nd pin of U3;
the 11 th pin of U4 is connected with the 5 th pin of U3;
the 8 th pin of the U4 is connected with the 6 th pin of the U5, the 3 rd pin of the U2 and the 3 rd pin of the U3;
the 9 th pin of U4 is connected with the 12 th pin of U4, the 4 th pin of U3 and the 8 th pin of U3;
the 5 th pin, the 7 th pin and the 11 th pin of the U2 are connected to GND, and the 14 th pin is connected to VCC;
pins 7 of U3 and U4 are connected to GND, and pin 14 is connected to VCC;
pin 7 of U5 is connected to GND, and pin 12, pin 13 and pin 14 are connected to VCC.
7. The genset power supply control apparatus of claim 1 wherein the drive unit comprises an integrated circuit U6 model number DS 2003;
the execution and indication unit comprises coils of relays KJ 1-KJ 3 and normally open contacts thereof, resistors R10-R13 and light emitting diodes D4-D7;
one end of a coil of the relay KJ1 is connected to a power supply VCC, the other end of the coil is connected to the 16 th pin of U6 and the cathode of the light emitting diode D5, and a normally open contact of the KJ1 is connected with a contact of a starting button of the generator set in parallel;
one end of a coil of the relay KJ2 is connected to a power supply VCC, the other end of the coil is connected to the 13 th pin of U6 and the cathode of the light emitting diode D6, and a normally open contact of the KJ2 is connected with a press button contact of the generator set in parallel;
one end of a coil of the relay KJ3 is connected to a power supply VCC, the other end of the coil is connected to the 11 th pin of the U6 and the cathode of the light emitting diode D7, and a normally open contact of the KJ1 is connected in series with an output contactor coil of the generator set to control the voltage output of the generator set.
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| CN111007747A (en) * | 2020-02-29 | 2020-04-14 | 南京交通职业技术学院 | Power supply control device for generator set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111007747A (en) * | 2020-02-29 | 2020-04-14 | 南京交通职业技术学院 | Power supply control device for generator set |
| CN111007747B (en) * | 2020-02-29 | 2024-09-13 | 南京交通职业技术学院 | Power supply control device of generator set |
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