CN2739875Y - Voltage regulator for three-phase generator - Google Patents
Voltage regulator for three-phase generator Download PDFInfo
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- CN2739875Y CN2739875Y CN 200420060129 CN200420060129U CN2739875Y CN 2739875 Y CN2739875 Y CN 2739875Y CN 200420060129 CN200420060129 CN 200420060129 CN 200420060129 U CN200420060129 U CN 200420060129U CN 2739875 Y CN2739875 Y CN 2739875Y
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Abstract
The utility model relates to a voltage regulator for a three-phase generator, comprising a sampling input circuit, an excitation input circuit, a detection control circuit, and a switch output circuit. The utility model is characterized in that: the sampling input circuit is composed of six electric resistances, six diodes, a seventh adjustable resistance, and a fourth electrochemical capacitor. A closed circuit is formed by successively connecting in series a first, second, third, fourth, fifth, and the sixth electric resistances from head to tail; the three input ends of the sampling input circuit which are arranged on the three junctions between the two electric resistances are symmetrically taken, and the other three junctions between the two electric resistances are respectively connected with a rectifying circuit comprising six diodes; then the output of the rectifying circuit is output through voltage division of the seventh adjustable resistance to provide detection signals for the detection control circuit. The utility model has the advantages of simple design, stable performance, reliable operation, accurate control, long service life, etc.
Description
(1), affiliated technical field
The utility model belongs to a kind of general gasoline engines voltage regulator, the especially a kind of voltage regulator that can regulate the threephase generator output voltage automatically.
(2), technical background
At present, the voltage regulator of known threephase generator has generally comprised circuit of sampling input, excitation input circuit, has detected control circuit and switch output circuit.This voltage regulator exists following deficiency:
1. circuit of sampling input is to be made of diode rectifier circuit and dividing potential drop adjustable resistance.Directly in the 380V voltage input rectification circuit with the output of generator main winding, behind diode rectification, deliver in the detection control circuit by the input of dividing potential drop adjustable resistance dividing potential drop.Rectifier diode in the rectification circuit is in the operating state of high pressure for a long time, can not work because of as easy as rolling off a log damage causes voltage regulator, directly influences the integral working of voltage regulator.
2. the switch output circuit has adopted the mode of two triode parallel connections, detects the mode that control circuit has adopted triode to detect.Because when triode was operated on off state, saturation voltage drop was 0.8V～1V, when triode was in the admittance state, the electric current that flows through was very big, heated up because of the bigger power of consumption sends Gao Re on the triode.Yet temperature is very big to the triode influence, and the maximum junction temperature of triode inside has semi-conducting material character, device passivation and package quality decision.When the hot soak condition of triode inside, its reliability will reduce significantly.Pliotron is when being applied to inductive load, even operating state is no more than maximum rating, but still may be because second breakdown causes component failure, this makes the life-span of voltage regulator shorten greatly.Because triode is a current control device, when work, must consume and detect the electric energy that main winding is exported so, just can not reflect the situation of main winding change in voltage fully, such result certainly will have influence on the regulation of main winding voltage.
3., circuit design is too complicated: adopt triode too complicated as the circuit design that detects control circuit, and, because the dispersiveness of the parameter of triode is very big, therefore, cause the debug difficulties of product, the shortcoming that consistency is relatively poor.
(3), summary of the invention
The purpose of this utility model just provides a kind of simplicity of design, stable performance, reliable operation, the threephase generator voltage regulator of precise control and long service life.
The purpose of this utility model is to realize by such technical scheme, it includes circuit of sampling input, the excitation input circuit, detect control circuit and switch output circuit, the output of excitation input circuit and detection control circuit, the feeder ear of switch output circuit connects, the output that detects control circuit is connected with the input of switch output circuit, it is characterized in that: circuit of sampling input is by first, two, three, four, five, six resistance, first, two, three, four, five, six diodes, the 7th adjustable resistance and the 4th electrochemical capacitor constitute, first, two, three, four, five, the end to end successively each other circuit that is connected into closure of six resistance, the junction of first resistance and the 6th resistance, the junction of second resistance and the 3rd resistance, the junction of the 4th resistance and the 5th resistance is respectively three inputs of circuit of sampling input, the junction of first resistance and second resistance, the junction of the 3rd resistance and the 4th resistance, three common ports that the junction of the 5th resistance and the 6th resistance is respectively, the 4th, five, anodal all ground connection of six diodes, its negative pole is respectively with first, two, the positive pole of three diodes connects, and be connected with three common ports respectively, first, two, the negative pole of three diodes all is connected with an end of the 7th adjustable resistance, the other end ground connection of the 7th adjustable resistance, the adjustable end of the 7th adjustable resistance is as the output of circuit of sampling input, it is connected with the input that detects control circuit, and the 4th electrochemical capacitor is attempted by between the adjustable end and ground of the 7th adjustable resistance.
The utility model is to be connected with threephase generator like this: three inputs of circuit of sampling input are connected with the output of main winding on the three-phase generation machine stator respectively, in order to gather the voltage signal of threephase generator output, two inputs of excitation input circuit are connected with the excitation winding on the stator, and two outputs of switch output circuit are connected with the rotor winding in epitrochanterian generation magnetic field.Operation principle of the present utility model is such: delivered to through first, second, third and fourth, after five, the six resistance step-downs by first, second, third and fourth, in the rectification circuit that constitutes of five, six diodes by the voltage of threephase generator main winding output and carry out rectification, be sent to by the 7th adjustable resistance branch and detect in the control circuit.When the voltage of threephase generator main winding output is lower than standard value (as 380 volts), deliver to the voltage signal that detects in the control circuit and can be lower than set point, detecting control circuit will deliver to the signal of a brownout in the switch output circuit, the switch output circuit will make the energising of rotor winding, produce magnetic field, make the stronger electric current of generator main winding induction, to improve constantly its output voltage, the electric current that excitation winding induces is powered to the rotor winding by the excitation input circuit.When the voltage of threephase generator main winding output is higher than standard value (as 380 volts), deliver to the voltage signal that detects in the control circuit and can be higher than set point, detecting control circuit will deliver to the signal of an overtension in the switch output circuit, the switch output circuit will make the outage of rotor winding, stop to produce magnetic field, make the voltage drop of main winding output be low to moderate standard value (as 380 volts).Alternately monitoring so repeatedly detects the voltage signal of main burning group output constantly, realizes that the generator main winding stably exports by a certain standard value (as 380 volts).Since adopted by first, second, third and fourth, the reduction voltage circuit that constitutes of five, six resistance, make the diode both end voltage obviously reduce, improve its functional reliability and stability, prolonged its useful life.
Owing to adopted technique scheme, the utlity model has simplicity of design, stable performance, reliable operation, advantages such as precise control and long service life.
(4), description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is a circuit diagram of the present utility model;
Among the figure: 1. circuit of sampling input; 2. excitation input circuit; 3. detection control circuit; 4. switch output circuit.
(5), embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the utility model includes circuit of sampling input 1, excitation input circuit 2, detect control circuit 3 and switch output circuit 4, the output of excitation input circuit 2 and detection control circuit 3, the feeder ear of switch output circuit 4 connects, the output that detects control circuit 3 is connected with the input of switch output circuit 4, it is characterized in that: circuit of sampling input 1 is by six resistance R 1, R2, R3, R4, R5, R6, six diode D1, D2, D3, D4, D5, D6, the 7th adjustable resistance R7 and the 4th electrochemical capacitor C4 constitute, first, two, three, four, five, six resistance R 1, R2, R3, R4, R5, the end to end successively each other circuit that is connected into closure of R6, the junction of first resistance R 1 and the 6th resistance R 6, the junction of second resistance R 2 and the 3rd resistance R 3, the junction of the 4th resistance R 4 and the 5th resistance R 5 is respectively three input I1 of circuit of sampling input, I2, I3, the junction of first resistance R 1 and second resistance R 2, the junction of the 3rd resistance R 3 and the 4th resistance R 4, three common port O1 that the junction of the 5th resistance R 5 and the 6th resistance R 6 is respectively, O2, O3, the 4th, five, six diode D4, D5, anodal all ground connection of D6, its negative pole is respectively with first, two, three diode D1, D2, the positive pole of D3 connects, and respectively with three common port O1, O2, O3 connects, first, two, three diode D1, D2, the negative pole of D3 all is connected with the end of the 7th adjustable resistance R7, the other end ground connection of the 7th adjustable resistance R7, the adjustable end of the 7th adjustable resistance R7 is as the output of circuit of sampling input, it is connected with the input that detects control circuit, and the 4th electrochemical capacitor C4 is attempted by between the adjustable end and ground of the 7th adjustable resistance R7.
The utility model is to be connected with threephase generator like this: three input I1, I2 of circuit of sampling input 1, I3 are connected with the output of main winding on the three-phase generation machine stator respectively, in order to gather the voltage signal of threephase generator output, two input BLUE1, the BLUE2 of excitation input circuit 2 is connected with the excitation winding on the stator, and two output RED, the WHITE of switch output circuit 4 is connected with the rotor winding in epitrochanterian generation magnetic field.Operation principle of the present utility model is such: delivered to through first, second, third and fourth, after five, six resistance R 1, R2, R3, R4, R5, R6 step-down by first, second, third and fourth, in the rectification circuit that constitutes of five, six diode D1, D2, D3, D4, D5, D6 by the voltage of threephase generator main winding output and carry out rectification, divide to be sent to by the 7th adjustable resistance R7 again and detect in the control circuit 3.When the voltage of threephase generator main winding output is lower than standard value (as 380 volts), deliver to the voltage signal that detects in the control circuit 3 and can be lower than set point, detecting control circuit 3 will deliver to the signal of a brownout in the switch output circuit 4, switch output circuit 4 will make the energising of rotor winding, produce magnetic field, make the stronger electric current of generator main winding induction, to improve constantly its output voltage, the electric current that excitation winding induces is by 2 pairs of rotor winding power supplies of excitation input circuit.When the voltage of threephase generator main winding output is higher than standard value (as 380 volts), deliver to the voltage signal that detects in the control circuit 3 and can be higher than set point, detecting control circuit 3 will deliver to the signal of an overtension in the switch output circuit 4, switch output circuit 4 will make the outage of rotor winding, stop to produce magnetic field, make the voltage drop of main winding output be low to moderate standard value (as 380 volts).Alternately monitoring so repeatedly detects the voltage signal of main burning group output constantly, realizes that the generator main winding stably exports by a certain standard value (as 380 volts).Since adopted by first, second, third and fourth, the reduction voltage circuit that constitutes of five, six resistance R 1, R2, R3, R4, R5, R6, make the diode both end voltage obviously reduce, improve its functional reliability and stability, prolonged its useful life.
As shown in Figure 1, testing circuit 3 can be by resistance R 8, D9, electrochemical capacitor C3, voltage-stabiliser tube D8, D9 and integrated operational amplifier J1 constitute, the negative pole of the 9th voltage-stabiliser tube D9 connects the reverse input end of the first integrated operational amplifier J1, the plus earth of the 9th voltage-stabiliser tube D9, the 8th resistance R 8 is connected between the power end of the feeder ear and the first integrated operational amplifier J1, the earth terminal ground connection of the first integrated operational amplifier J1, the power end of the first integrated operational amplifier J1 is connected with the reverse input end of the first integrated operational amplifier J1, the negative pole of the 8th voltage-stabiliser tube D8 connects the power end of the first integrated operational amplifier J1, the plus earth of the 8th voltage-stabiliser tube D8, the positive pole of the 3rd electrochemical capacitor C3 connects the power end of the first integrated operational amplifier J1, the minus earth of the 3rd electrochemical capacitor C3, the 9th resistance R 9 is connected between the output of the power end of the first integrated operational amplifier J1 and the first integrated operational amplifier J1, the input in the same way of the first integrated operational amplifier J1, output is respectively as the input that detects control circuit 3, output.
Above-mentioned detection control circuit 3 is work like this: the magnitude of voltage of the reverse input end of the first integrated operational amplifier J1 is controlled by the 9th voltage stabilizing didoe D9, and it is exactly the examination criteria value that detects control circuit 3.When the voltage signal of delivering to the input in the same way of the first integrated operational amplifier J1 when circuit of sampling input 1 was lower than the standard voltage value of setting of reverse input end of the first integrated operational amplifier J1, the output of the first integrated operational amplifier J1 will be exported a low-potential signal; When the voltage signal of delivering to the input in the same way of the first integrated operational amplifier J1 when circuit of sampling input 1 was higher than the standard voltage value of setting of reverse input end of the first integrated operational amplifier J1, the output of the first integrated operational amplifier J1 will be exported a high potential signal.The operating voltage of the first integrated operational amplifier J1 is subjected to the control of the 8th voltage stabilizing didoe D8, and the first integrated operational amplifier J1 is worked reliably.Compared with prior art, owing to substituted triode, eliminated because of triode and brought many unfavorable factors with the first integrated operational amplifier J1.
As shown in Figure 1, switch output circuit 4 is by resistance R 10, triode Q1, voltage-stabiliser tube D10, diode D11, D12 and field effect transistor Q2 constitute, the base stage of the first triode Q1 is connected with the output that detects control circuit 3 as the input of switch output circuit 4, the grounded emitter of the first triode Q1, the tenth resistance R 10 is connected between the collector electrode of the feeder ear and the first triode Q1, the negative pole of the tenth voltage-stabiliser tube D10 connects the collector electrode of the first triode Q1, the plus earth of the tenth voltage-stabiliser tube D10, the grid of the second field effect transistor Q2 is connected with the collector electrode of the first triode Q1, the source electrode of the second field effect transistor Q2 is as an output WHITE of switch output circuit 4, the grounded drain of the second field effect transistor Q2, the 11 diode D11 is connected between output WHITE and the ground, the tenth diode D12 is connected between output WHITE and the feeder ear, and feeder ear is as another output RED of switch output circuit 4.
Above-mentioned switch output circuit 4 is work like this: the operating voltage of grid of the collector electrode of the first triode Q1 and the second field effect transistor Q2 is controlled by the tenth voltage stabilizing didoe D10, make the first triode Q1 and the second field effect transistor Q2 when conducting, do not send high heat, reliablely and stablely work to guarantee the first triode Q1 and the second field effect transistor Q2 because of electric current is excessive.When detecting control circuit 3 output high potentials, the first triode Q1 conducting, the second field effect transistor Q2 ends, and causes the rotor winding not switch on; When detecting control circuit 3 output electronegative potentials, the first triode Q1 ends, and the second field effect transistor Q2 conducting causes the energising of rotor winding, produces magnetic field.
Claims (3)
1. threephase generator voltage regulator, include circuit of sampling input (1), excitation input circuit (2), detect control circuit (3) and switch output circuit (4), the output of excitation input circuit (2) and detection control circuit (3), the feeder ear of switch output circuit (4) connects, the output that detects control circuit (3) is connected with the input of switch output circuit (4), it is characterized in that: circuit of sampling input (1) is by six resistance (R1, R2, R3, R4, R5, R6), six diode (D1, D2, D3, D4, D5, D6), the 7th adjustable resistance (R7) and the 4th electrochemical capacitor (C4) constitute, first, two, three, four, five, six resistance (R1, R2, R3, R4, R5, R6) the end to end successively each other circuit that is connected into closure, the junction of first resistance (R1) and the 6th resistance (R6), the junction of second resistance (R2) and the 3rd resistance (R3), the 4th resistance (R4) is respectively three input (I1 of circuit of sampling input with the junction of the 5th resistance (R5), I2, I3), the junction of first resistance (R1) and second resistance (R2), the junction of the 3rd resistance (R3) and the 4th resistance (R4), three common port (O1 that the junction of the 5th resistance (R5) and the 6th resistance (R6) is respectively, O2, O3), the 4th, five, six diode (D4, D5, D6) anodal all ground connection, its negative pole is respectively with first, two, three diode (D1, D2, D3) positive pole connects, and respectively with three common port (O1, O2, O3) connect, first, two, three diode (D1, D2, D3) negative pole all is connected with an end of the 7th adjustable resistance (R7), the other end ground connection of the 7th adjustable resistance (R7), the adjustable end of the 7th adjustable resistance (R7) is as the output of circuit of sampling input, it is connected with the input that detects control circuit, and the 4th electrochemical capacitor (C4) is attempted by between the adjustable end and ground of the 7th adjustable resistance (R7).
2. threephase generator voltage regulator as claimed in claim 1, it is characterized in that: testing circuit (3) is by resistance (R8, D9), electrochemical capacitor (C3), voltage-stabiliser tube (D8, D9) and integrated operational amplifier (J1) constitute, the negative pole of the 9th voltage-stabiliser tube (D9) connects the reverse input end of first integrated operational amplifier (J1), the plus earth of the 9th voltage-stabiliser tube (D9), the 8th resistance (R8) is connected between the power end of feeder ear and first integrated operational amplifier (J1), the earth terminal ground connection of first integrated operational amplifier (J1), the power end of first integrated operational amplifier (J1) is connected with the reverse input end of first integrated operational amplifier (J1), the negative pole of the 8th voltage-stabiliser tube (D8) connects the power end of first integrated operational amplifier (J1), the plus earth of the 8th voltage-stabiliser tube (D8), the positive pole of the 3rd electrochemical capacitor (C3) connects the power end of first integrated operational amplifier (J1), the minus earth of the 3rd electrochemical capacitor (C3), the 9th resistance (R9) is connected between the output of the power end of first integrated operational amplifier (J1) and first integrated operational amplifier (J1), the input in the same way of first integrated operational amplifier (J1), output is respectively as the input that detects control circuit (3), output.
3. threephase generator voltage regulator as claimed in claim 1, it is characterized in that: switch output circuit (4) is by resistance (R10), triode (Q1), voltage-stabiliser tube (D10), diode (D11, D12) and field effect transistor (Q2) constitute, the base stage of first triode (Q1) is connected with the output that detects control circuit (3) as the input of switch output circuit (4), the grounded emitter of first triode (Q1), the tenth resistance (R10) is connected between the collector electrode of feeder ear and first triode (Q1), the negative pole of the tenth voltage-stabiliser tube (D10) connects the collector electrode of first triode (Q1), the plus earth of the tenth voltage-stabiliser tube (D10), the grid of second field effect transistor (Q2) is connected with the collector electrode of first triode (Q1), the source electrode of second field effect transistor (Q2) is as an output (WHITE) of switch output circuit (4), the grounded drain of second field effect transistor (Q2), the 11 diode (D11) is connected between output (WHITE) and the ground, the tenth diode (D12) is connected between output (WHITE) and the feeder ear, and feeder ear is as another output (RED) of switch output circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060129 CN2739875Y (en) | 2004-07-05 | 2004-07-05 | Voltage regulator for three-phase generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060129 CN2739875Y (en) | 2004-07-05 | 2004-07-05 | Voltage regulator for three-phase generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739875Y true CN2739875Y (en) | 2005-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060129 Expired - Fee Related CN2739875Y (en) | 2004-07-05 | 2004-07-05 | Voltage regulator for three-phase generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN2739875Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646659A (en) * | 2019-09-26 | 2020-01-03 | 浙江榆阳电子有限公司 | Sampling precision and hysteresis control lifting circuit |
| CN113162495A (en) * | 2021-05-14 | 2021-07-23 | 济南安瑞信源机电设备有限公司 | Anti-interference circuit and anti-interference method for excitation forced excitation of generator |
-
2004
- 2004-07-05 CN CN 200420060129 patent/CN2739875Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646659A (en) * | 2019-09-26 | 2020-01-03 | 浙江榆阳电子有限公司 | Sampling precision and hysteresis control lifting circuit |
| CN110646659B (en) * | 2019-09-26 | 2021-07-30 | 浙江榆阳电子有限公司 | Sampling precision and hysteresis control lifting circuit |
| CN113162495A (en) * | 2021-05-14 | 2021-07-23 | 济南安瑞信源机电设备有限公司 | Anti-interference circuit and anti-interference method for excitation forced excitation of generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 |