CN204741434U - Generator steady voltage control circuit - Google Patents
Generator steady voltage control circuit Download PDFInfo
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- CN204741434U CN204741434U CN201520498809.1U CN201520498809U CN204741434U CN 204741434 U CN204741434 U CN 204741434U CN 201520498809 U CN201520498809 U CN 201520498809U CN 204741434 U CN204741434 U CN 204741434U
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Abstract
The utility model discloses a generator steady voltage control circuit, include from detecting detection winding rectifier bridge and the detection circuitry that the winding acquireed the power, should detect the winding rectifier bridge and be integrating circuit and comparison circuit power supply through power supply circuit, its characterized in that: detection circuitry's input connect the rear end of third resistance, the front end of this third resistance connects through first information source resistance detect the first link of winding, the front end of third resistance connects through second information source resistance detect the second link of winding, comparison circuit's input is connected to integrating circuit's input, integrating circuit are connected to detection circuitry's output output, comparison circuit's output connection control circuit input end, control circuit control excitation winding's operating condition. Its effect lies in further improving the stability of the output voltage regulation of engine driven generator.
Description
Technical field
The utility model relates to a kind of output voltage regulation technology of engine driven generators, specifically a kind of generator controlling circuit of voltage regulation.
Background technology
The output voltage of engine driven generators is subject to the impact of exciting current, output voltage is unstable, in order to ensure that generator output voltage is stablized, usual voltage regulator controls the biased of transistor base according to the change of generator respective loads, realize the change of transistor turns time, thus the size changing exciter current of generator realizes the stable of output voltage.The voltage regulator of assisting winding rectifier bridge, detection winding rectifier bridge, testing circuit, comparison circuit and control circuit to form by generator; When generator output voltage exports too high or too low, its electric machines test winding voltage is by comparing with circuit configuration value after rectification, filtering, its size comparing output valve allows control circuit decide the size of excitation winding electric current, thus reaches the object of regulator generator output voltage.But this circuit shortcoming is: the drift of generator output voltage output temperature is large, greatly, functional reliability is poor for the hot output voltage change of generator cold conditions.
Publication number CN204190660U discloses a kind of generator automatic voltage regulator, it comprises sampling winding, excitation winding and auxiliary winding, also comprise power circuit, testing circuit, integrating circuit, comparison circuit, and control circuit, described power circuit is connected with sampling winding finishing circuit output with described testing circuit input, described testing circuit output is connected with integrating circuit input, described integrating circuit output is connected with described comparison circuit input, the input of the output connection control circuit of described comparison circuit, the output of described control circuit connects excitation winding.
Although above-mentioned patent overcomes the hot output voltage change of generator cold conditions greatly to a certain extent, but because testing circuit sampled voltage is through the direct voltage after rectification circuit, cause integrating circuit in input, there is the situation of distortion, cause its functional reliability difference precision of voltage regulation not high.
Utility model content
In order to overcome the problems referred to above, this programme proposes the generator controlling circuit of voltage regulation after a kind of improvement, directly samples to the alternating voltage detecting winding two ends, can improve the voltage stabilizing degree of regulation of the output voltage of generator further.
For reaching above-mentioned effect, concrete scheme of the present utility model is as follows:
A kind of generator controlling circuit of voltage regulation, comprise detection winding rectifier bridge and the testing circuit from detecting winding acquisition power supply, this detection winding rectifier bridge is that integrating circuit and comparison circuit are powered through power circuit; Its key is: the input of described testing circuit connects the rear end of the 3rd resistance, the front end first information source resistance of the 3rd resistance connects the first link of described detection winding, and the front end second information source resistance of the 3rd resistance connects the second link of described detection winding;
The input that output connects the input of integrating circuit, the output of integrating circuit connects comparison circuit of described testing circuit, the output connection control circuit input end of comparison circuit, control circuit controls the operating state of excitation winding.
The input of testing circuit is connected to and detects winding two ends acquisition alternating voltage data, avoid the voltage wave shape distortion detected, make the output voltage of follow-up integrating circuit and comparison circuit more accurate.
Described generator controlling circuit of voltage regulation also comprises the auxiliary winding rectifier bridge being connected on auxiliary winding two ends, and the DC output end of this auxiliary winding rectifier bridge is connected with the second link of described excitation winding; First link of excitation winding connects the output of described control circuit.
First link of described excitation winding connects the anode of the second diode, and after negative electrode series connection the 15 resistance of this second diode, then the 5th electric capacity of connecting is connected with the input of described control circuit.Introduce feedback regulation, make the output voltage of control circuit more precise and stable.
Described control circuit is provided with the first triode, and this first transistor base connects described comparison circuit as control circuit input, the grounded emitter of this first triode, and the collector electrode of this first triode is connected with the second transistor base;
The base stage of this second triode is connected with the second link of excitation winding through the 20 resistance, the collector electrode of this second triode is connected with the first link of excitation winding through the 17 resistance, and the emitter of this second triode is connected with the base stage of the 3rd triode;
The collector electrode of the 3rd triode is connected with excitation winding first link, and the emitter of the 3rd triode is connected with the base stage of the 4th triode;
The 18 resistance is connected with between the base stage of the 4th triode and emitter, the emitter of the 4th triode is through the 19 grounding through resistance, the collector electrode of the 4th triode connects the negative electrode of the second diode, and the anode of the second diode is connected with excitation winding first link.
The inverting input of described comparison circuit is connected with the output of integrating circuit through the 11 resistance, in-phase input end is connected with the output of power circuit through pull-up resistor, through pull down resistor ground connection, output is connected with the normal phase input end of comparison circuit through the 13 resistance.
Remarkable result of the present utility model: the input of testing circuit is connected to and detects winding two ends acquisition alternating voltage data; avoid the voltage wave shape distortion detected; make the output voltage of follow-up integrating circuit and comparison circuit more accurate; introduce positive feedback at control circuit to regulate simultaneously; improve reversal rate; protection power tube, output voltage is more precise and stable, and the generator output voltage stability of whole system has had higher lifting.
Accompanying drawing explanation
Fig. 1 is system block diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and working method are described further;
As shown in Figure 1,
A kind of generator controlling circuit of voltage regulation, specifically be provided with generator and assist winding rectifier bridge 10, detect winding rectifier bridge 2, excitation winding 7, power circuit 9, testing circuit 3, detect winding 1, auxiliary winding 8, integrating circuit 4, comparison circuit 5 and control circuit 6, the two ends wherein detecting winding 1 are connected with testing circuit 3 input after R2 through series resistance R1 respectively, testing circuit 3 exports and connects integrating circuit 4 input, integrating circuit 4 output connects comparison circuit 5 input, comparison circuit 5 output connection control circuit 6 input, the output of control circuit 6 is connected with excitation winding 7 first link, the output of auxiliary winding rectifier bridge 10 is connected with excitation winding 7 second link, the input of power circuit 9 is connected with the output detecting winding rectifier bridge 2, and its output is connected with the power input of integrating circuit 4 and comparison circuit 5 respectively.Resistance R15 and electric capacity C5 is in series with between control circuit 6 input and excitation winding 7 first link.
As shown in Figure 2
Testing circuit
Comprise resistance R1, R2, R3, R5, R6, R7, R9, electrochemical capacitor C2, potentiometer W1.The front end of resistance R1 with R2 detects winding 1 first link with generator output voltage respectively and the second link is connected, and the rear end of R1 with R2 is connected with R3 front end, and R3 rear end is connected with the front end of resistance R5, resistance R6 respectively; Resistance R6 rear end is connected with electrochemical capacitor C2 anode, electrochemical capacitor C2 minus earth; Resistance R5 rear end is connected with the front end of potentiometer W1; The rear end of potentiometer W1 is connected with resistance R7 front end, resistance R7 rear end ground connection, and the middle slip end of potentiometer W1 and centre tap are connected with resistance R9 front end, and resistance R9 rear end is connected with the reverse input end of integrated transporting discharging IC1A.
Power circuit
Comprise resistance R4, voltage-stabiliser tube DW and electrochemical capacitor C1, the front end of resistance R4 is connected with the output detecting winding rectifier bridge 2 with electrochemical capacitor C1 positive pole, the minus earth of electrochemical capacitor C1, the rear end of resistance R4 and the negative electrode of voltage-stabiliser tube DW meet power supply VCC, voltage-stabiliser tube DW plus earth.
Integrating circuit
Integrating circuit 4 comprises resistance R23, resistance R8, resistance R10, resistance R11, integrated transporting discharging IC1A, electric capacity C3, electric capacity C4.The in-phase input end of integrated transporting discharging IC1A is connected with the output of power circuit 9 through pull-up resistor R23, through pull down resistor R8 ground connection, resistance R10 and electric capacity C4 is in series with between the inverting input of integrated transporting discharging IC1A and output, the series circuit two ends that resistance R10 and electric capacity C4 forms are parallel with electric capacity C3, and the output of integrated transporting discharging IC1A is connected with the inverting input of comparison circuit through resistance R11.
Comparison circuit
Comparison circuit 5 comprises integrated transporting discharging IC1B, resistance R12, resistance R21, resistance R13, the in-phase input end of integrated transporting discharging IC1B is connected with the output of power circuit 9 through pull-up resistor R12, through pull down resistor R21 ground connection, be connected with resistance R13 between the in-phase input end of integrated transporting discharging IC1B and output, the output of integrated transporting discharging IC1B is connected with the input of control circuit 6.
Control circuit
Control circuit 6 is provided with electric capacity C5, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, diode D2, diode D3, diode D4, triode Q1, triode Q2, triode Q3, triode Q4.Resistance R14 front end is connected with the output of comparison circuit 5, and its rear end is connected with triode Q1 base stage; The base stage of triode Q1, through pull down resistor R16 ground connection, is connected with triode Q4 collector electrode after resistance R15 through series capacitance C5, the grounded emitter of triode Q1, and the collector electrode of triode Q1 is connected with the base stage of triode Q2; The base stage of triode Q2 is connected with auxiliary winding rectifier bridge 10 output through resistance R20, and the collector electrode of triode Q2 is connected with the first end of excitation winding 7 through series resistance R17, and triode Q2 emitter is connected with the base stage of triode Q3; The collector electrode of triode Q3 is connected with the first end of excitation winding 7, and the emitter of triode Q3 is connected with triode Q4 base stage; The collector electrode of triode Q4 connects the negative electrode of diode D2, and the anode of diode D2 connects the first link of excitation winding 7, and the emitter of triode Q4, through resistance R19 ground connection, is simultaneously in series with resistance R18 between the emitter of triode Q4 and the emitter of triode Q3; The anode of diode D3 connects the first link of excitation winding 7, and the negative electrode of diode D3 connects the second link of excitation winding 7, and the anode of diode D3 connects the negative electrode of diode D4, the plus earth of diode D4.
Winding rectifier bridge assisted by generator
Generator assists the output of winding rectifier bridge 10 to be provided with filter capacitor C6, and its output connects with the second link of excitation winding 7.
Operation principle: because testing circuit is directly sampled to Generator test winding two ends, obtain waves AC voltage completely, avoid the distortion of waveform, the output making integrating circuit and comparison circuit is more accurately stable, thus enables generator excitation winding two ends obtain a stable output voltage.
Claims (5)
1. a generator controlling circuit of voltage regulation, comprise detection winding rectifier bridge (2) and the testing circuit (3) from detecting winding (1) acquisition power supply, this detection winding rectifier bridge (2) is integrating circuit (4) and comparison circuit (5) power supply through power circuit (9); It is characterized in that: the input of described testing circuit (3) connects the rear end of the 3rd resistance (R3), the front end first information source resistance (R1) of the 3rd resistance (R3) connects the first link of described detection winding (1), and the front end second information source resistance (R2) of the 3rd resistance (R3) connects the second link of described detection winding (1);
The output of described testing circuit (3) connects the input of integrating circuit (4), the output of integrating circuit (4) connects the input of comparison circuit (5), output connection control circuit (6) input of comparison circuit (5), control circuit (6) controls the operating state of excitation winding (7).
2. generator controlling circuit of voltage regulation according to claim 1, it is characterized in that: also comprise the auxiliary winding rectifier bridge (10) being connected on auxiliary winding (8) two ends, the DC output end of this auxiliary winding rectifier bridge (10) is connected with the second link of described excitation winding (7); First link of excitation winding (7) connects the output of described control circuit (6).
3. generator controlling circuit of voltage regulation according to claim 1 and 2, it is characterized in that: the first link of described excitation winding (7) connects the anode of the second diode (D2), after negative electrode series connection the 15 resistance (R15) of this second diode (D2), then the 5th electric capacity (C5) of connecting is connected with the input of described control circuit (6).
4. generator controlling circuit of voltage regulation according to claim 1 and 2, it is characterized in that: described control circuit (6) is provided with the first triode (Q1), this the first triode (Q1) base stage connects described comparison circuit (5) as control circuit (6) input, the grounded emitter of this first triode (Q1), the collector electrode of this first triode (Q1) is connected with the second triode (Q2) base stage;
The base stage of this second triode (Q2) is connected with the second link of excitation winding (7) through the 20 resistance (R20), the collector electrode of this second triode (Q2) is connected through first link of the 17 resistance with excitation winding (7), and the emitter of this second triode (Q2) is connected with the base stage of the 3rd triode (Q3);
The collector electrode of the 3rd triode (Q3) is connected with excitation winding (7) first link, and the emitter of the 3rd triode (Q3) is connected with the base stage of the 4th triode (Q4);
The 18 resistance (R18) is connected with between the base stage of the 4th triode (Q4) and emitter, the emitter of the 4th triode (Q4) is through the 19 resistance (R19) ground connection, the collector electrode of the 4th triode (Q4) connects the negative electrode of the second diode (D2), and the anode of the second diode (D2) is connected with excitation winding (7) first link.
5. generator controlling circuit of voltage regulation according to claim 1, it is characterized in that: the inverting input of described comparison circuit (5) is connected with the output of integrating circuit (4) through the 11 resistance (R11), in-phase input end is connected through the output of pull-up resistor (R12) with power circuit (9), through pull down resistor (R21) ground connection, output is connected with the normal phase input end of comparison circuit (5) through the 13 resistance (R13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498809.1U CN204741434U (en) | 2015-07-10 | 2015-07-10 | Generator steady voltage control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498809.1U CN204741434U (en) | 2015-07-10 | 2015-07-10 | Generator steady voltage control circuit |
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| Publication Number | Publication Date |
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| CN204741434U true CN204741434U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520498809.1U Active CN204741434U (en) | 2015-07-10 | 2015-07-10 | Generator steady voltage control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849707A (en) * | 2016-11-28 | 2017-06-13 | 中核核电运行管理有限公司 | The high-performance high-voltage power module that a kind of nuclear power station reactor core Nuclear measurement system is used |
-
2015
- 2015-07-10 CN CN201520498809.1U patent/CN204741434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849707A (en) * | 2016-11-28 | 2017-06-13 | 中核核电运行管理有限公司 | The high-performance high-voltage power module that a kind of nuclear power station reactor core Nuclear measurement system is used |
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