CN206602476U - A kind of marine generator voltage-regulating system - Google Patents
A kind of marine generator voltage-regulating system Download PDFInfo
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- CN206602476U CN206602476U CN201720056640.3U CN201720056640U CN206602476U CN 206602476 U CN206602476 U CN 206602476U CN 201720056640 U CN201720056640 U CN 201720056640U CN 206602476 U CN206602476 U CN 206602476U
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- type triode
- npn type
- igbt
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Abstract
The utility model provides a kind of marine generator voltage-regulating system; including drive module and IGBT; the drive module includes the recommending output mode unit for being used to improve driving force; for suppressing the current-limiting protection unit of increase in current, sampling resistor R8 and amplitude limit absorption circuit for preventing the gate driving circuit of the IGBT from high pressure spike occur; the utility model improves the stability and reliability of generator excited system; the maintenance cost of equipment is reduced simultaneously, and there is practicality in the marine generator group excitation system reconstruction of Small And Medium Capacity.
Description
Technical field
The utility model is related to voltage regulation techniques field, and in particular to a kind of marine generator voltage-regulating system.
Background technology
Current China marine generator uses controllable phase compound excitation excitation con-trol mode mostly.Controllable phase-compounding excitation unit is by mutually multiple
Encourage device and automatic voltage regulator（AVR）Constitute, wherein phase-compounding excitation unit is excitation unit main body, and it ensure that generator
From pressure and load current compensation is evoked, it is good that dynamic encourages by force performance.In phase-compounding excitation unit, when voltage deviation is not yet formed, root
Open-loop compensation adjustment is carried out to exciting current according to the change of load current, therefore its adjustment effect is prior to AVR.Due to having for load
Work(, reactive power can change, and phase-compounding excitation unit degree of regulation is difficult to improve, and voltage deviation easily occur, now by AVR
Further realize that closed loop is adjusted according to voltage deviation signal, so as to improve regulation precision.In parallel running of generators, AVR's
Work can avoid underexcitation and cause reactive power to pour in down a chimney phenomenon.
Once AVR breaks down, generator output voltage can be caused too high, or generator decompression enters demagnetization state, makes
Into ill effects such as undervoltage trips.Therefore, AVR reliability is directly related to the electrical stability and continuity of network of ship.
AVR of the prior art generally uses the shunting mode of DC side parallel, and what it is as shunting power device is high-power crystalline substance
Body pipe.But in actual use, when generator meets with short circuit, the non-normal working such as non-Switching Synchronization, it has been found that as dividing
The high power transistor of stream easily fails, and has had a strong impact on AVR reliability.
Utility model content
The application is by providing a kind of marine generator voltage-regulating system, to solve generator voltage controller in anon-normal
The technical problem that high power transistor easily fails under normal operating mode.
In order to solve the above technical problems, the application is achieved using following technical scheme：
A kind of marine generator voltage-regulating system, including drive module and IGBT, the drive module include being used to carry
The recommending output mode unit of high driving ability, for suppressing the current-limiting protection unit of increase in current, sampling resistor R8 and for preventing
Only there is the amplitude limit absorption circuit of high pressure spike in the gate driving circuit of the IGBT, wherein, the recommending output mode unit includes
NPN type triode Q2 and PNP type triode Q3, the current-limiting protection unit includes operational amplifier U2, NPN type triode
Q4, voltage-regulator diode D4, diode D2, resistance R5, resistance R6 and electric capacity C1, the amplitude limit absorption circuit include voltage stabilizing two
Pole pipe D3 and voltage-regulator diode D5, the NPN type triode Q2 emitter stage connect the transmitting of the PNP type triode Q3
Pole, colelctor electrode connection the power supply VCC, the PNP type triode Q3 of the NPN type triode Q2 colelctor electrode connects the NPN
Type triode Q4 emitter stage, the colelctor electrode of the NPN type triode Q4 is described by resistance R3 connections IGBT grid
NPN type triode Q4 base stage connects the negative pole of the diode D2, and the positive pole of the diode D2 is connected by the resistance R5
The output end of the operational amplifier U2 is connect, the in-phase input end of the operational amplifier U2 passes through the electric capacity C1 connections computing
Amplifier U2 output end, meanwhile, the in-phase input end of the operational amplifier U2 connects the negative pole of the voltage-regulator diode D3
Between the positive pole of the voltage-regulator diode D5, the positive pole of the voltage-regulator diode D3 connects the grid of the IGBT, described steady
Press diode D5 plus earth, anti-phase input termination the power supply Vref, the NPN type triode Q4 of the operational amplifier U2
Emitter stage by resistance R6 connections operational amplifier U2 negative power end, the negative power end of the operational amplifier U2 connects
The positive pole for meeting power supply VSS, the voltage-regulator diode D4 connects the emitter stage of the NPN type triode Q4, the voltage-regulator diode
D4 negative pole ground connection, the grid of the IGBT is grounded by resistance R7, and the emitter stage of the IGBT passes through the sampling resistor R8
Ground connection, the colelctor electrode connection diode D1 of IGBT negative pole, the positive pole of the diode D1 connects the operational amplifier
U2 in-phase input end, meanwhile, the colelctor electrode of the IGBT is grounded by electric capacity C2.
Further, in addition to for carrying out photocoupler U1 and resistance R1, resistance R2, the resistance of potential isolation
R4, NPN type triode Q1, wherein, power supply VCC by the electrode input end of the resistance R1 connections photocoupler U1,
Pwm signal is input to the negative input of the photocoupler U1, and the collector output of the photocoupler U1 passes through
Resistance R2 connection power supply VCC, while the collector output of the photocoupler U1 connects the base of the NPN type triode Q1
Pole, colelctor electrode connection the power supply VCC, the NPN type triode Q1 of the NPN type triode Q1 emitter stage connects the NPN
The base stage of type triode Q2 base stage and the PNP type triode Q3, the emitter stage output end of the photocoupler U1 is led to
Cross the emitter stage of the resistance R4 connections NPN type triode Q1.
As a kind of perferred technical scheme, using 1200V45A IGBT.
In order to avoid IGBT drive signal by larger interference, cause IGBT false triggering, described drive module with
The line of the IGBT is less than 10cm.
Compared with prior art, the technical scheme that the application is provided, the technique effect or advantage having be：Improve generating
The stability and reliability of machine excitation system, while the maintenance cost of equipment is reduced, in the marine generator group of Small And Medium Capacity
There is practicality in excitation system reconstruction.
Brief description of the drawings
Fig. 1 is marine generator voltage-regulating system circuit diagram.
Embodiment
The embodiment of the present application is by providing a kind of marine generator voltage-regulating system, to solve generator voltage controller
The technical problem that high power transistor easily fails under damage.
It is right below in conjunction with Figure of description and specific embodiment in order to be better understood from above-mentioned technical proposal
Above-mentioned technical proposal is described in detail.
Embodiment
A kind of marine generator voltage-regulating system, including drive module and IGBT, the drive module include being used to carry
The recommending output mode unit of high driving ability, for suppressing the current-limiting protection unit of increase in current, sampling resistor R8 and for preventing
Only there is the amplitude limit absorption circuit of high pressure spike in the gate driving circuit of the IGBT, wherein, the recommending output mode unit includes
NPN type triode Q2 and PNP type triode Q3, the current-limiting protection unit includes operational amplifier U2, NPN type triode
Q4, voltage-regulator diode D4, diode D2, resistance R5, resistance R6 and electric capacity C1, the amplitude limit absorption circuit include voltage stabilizing two
Pole pipe D3 and voltage-regulator diode D5, the NPN type triode Q2 emitter stage connect the transmitting of the PNP type triode Q3
Pole, colelctor electrode connection the power supply VCC, the PNP type triode Q3 of the NPN type triode Q2 colelctor electrode connects the NPN
Type triode Q4 emitter stage, the colelctor electrode of the NPN type triode Q4 is described by resistance R3 connections IGBT grid
NPN type triode Q4 base stage connects the negative pole of the diode D2, and the positive pole of the diode D2 is connected by the resistance R5
The output end of the operational amplifier U2 is connect, the in-phase input end of the operational amplifier U2 passes through the electric capacity C1 connections computing
Amplifier U2 output end, meanwhile, the in-phase input end of the operational amplifier U2 connects the negative pole of the voltage-regulator diode D3
Between the positive pole of the voltage-regulator diode D5, the positive pole of the voltage-regulator diode D3 connects the grid of the IGBT, described steady
Press diode D5 plus earth, anti-phase input termination the power supply Vref, the NPN type triode Q4 of the operational amplifier U2
Emitter stage by resistance R6 connections operational amplifier U2 negative power end, the negative power end of the operational amplifier U2 connects
The positive pole for meeting power supply VSS, the voltage-regulator diode D4 connects the emitter stage of the NPN type triode Q4, the voltage-regulator diode
D4 negative pole ground connection, the grid of the IGBT is grounded by resistance R7, and the emitter stage of the IGBT passes through the sampling resistor R8
Ground connection, the colelctor electrode connection diode D1 of IGBT negative pole, the positive pole of the diode D1 connects the operational amplifier
U2 in-phase input end, meanwhile, the colelctor electrode of the IGBT is grounded by electric capacity C2.
Further, in addition to for carrying out photocoupler U1 and resistance R1, resistance R2, the resistance of potential isolation
R4, NPN type triode Q1, wherein, power supply VCC by the electrode input end of the resistance R1 connections photocoupler U1,
Pwm signal is input to the negative input of the photocoupler U1, and the collector output of the photocoupler U1 passes through
Resistance R2 connection power supply VCC, while the collector output of the photocoupler U1 connects the base of the NPN type triode Q1
Pole, colelctor electrode connection the power supply VCC, the NPN type triode Q1 of the NPN type triode Q1 emitter stage connects the NPN
The base stage of type triode Q2 base stage and the PNP type triode Q3, the emitter stage output end of the photocoupler U1 is led to
Cross the emitter stage of the resistance R4 connections NPN type triode Q1.
The operation principle of system is：Once the sampled voltage that IGBT colelctor electrode occurs on excessively stream, sampling resistor R8 exceedes
During the reference voltage that Vref is provided, operational amplifier U2 output switching activities, output signal is become just by negative, leads NPN type triode Q4
Logical, the back bias voltage that voltage-regulator diode D4 is provided introduces IGBT grid, it is ensured that shut-off IGBT, prevents overcurrent from causing IGBT's
Damage.Drive signal is blocked and the opening that is delayed, when IGBT soft switchings and being allowed in 2-3ms is kept certain
Between.
The specification of the IGBT is chosen, and the highest transient state that generator excitation winding is likely to occur should be more than according to ceiling voltage
The principle of voltage is carried out, in the present embodiment using 1200V45A IGBT.Adding current limiting measures simultaneously ensures opening for IGBT
Track is closed in safety operation area（FBSOA、RBSOA）Within.
In order to avoid IGBT drive signal by larger interference, cause IGBT false triggering, described drive module with
The line of the IGBT is less than 10cm.
In above-described embodiment of the application, by providing a kind of marine generator voltage-regulating system.
It should be pointed out that described above is not to limitation of the present utility model, the utility model is also not limited to
The example above, what those skilled in the art were made in essential scope of the present utility model changes, is modified, adding
Plus or replace, should also belong to protection domain of the present utility model.
Claims (4)
1. a kind of marine generator voltage-regulating system, it is characterised in that including drive module and IGBT, the drive module bag
Include the recommending output mode unit for improving driving force, for suppress the current-limiting protection unit of increase in current, sampling resistor R8 with
And for preventing the gate driving circuit of the IGBT from the amplitude limit absorption circuit of high pressure spike occur, wherein,
The recommending output mode unit includes NPN type triode Q2 and PNP type triode Q3, and the current-limiting protection unit includes fortune
Amplifier U2, NPN type triode Q4, voltage-regulator diode D4, diode D2, resistance R5, resistance R6 and electric capacity C1 are calculated, it is described
Amplitude limit absorption circuit includes voltage-regulator diode D3 and voltage-regulator diode D5,
The emitter stage of the NPN type triode Q2 connects the emitter stage of the PNP type triode Q3, the NPN type triode Q2
Colelctor electrode connection power supply VCC, PNP type triode Q3 colelctor electrode connect the emitter stage of the NPN type triode Q4, institute
NPN type triode Q4 colelctor electrode is stated by resistance R3 connections IGBT grid, the base stage of the NPN type triode Q4 connects
The negative pole of the diode D2 is connect, the positive pole of the diode D2 passes through the defeated of the resistance R5 connections operational amplifier U2
Go out end, the in-phase input end of the operational amplifier U2 by electric capacity C1 connections operational amplifier U2 output end, meanwhile,
The in-phase input end of the operational amplifier U2 is connecting the negative pole and the voltage-regulator diode D5 of the voltage-regulator diode D3 just
Between pole, the positive pole of the voltage-regulator diode D3 connects the grid of the IGBT, the plus earth of the voltage-regulator diode D5, institute
Operational amplifier U2 anti-phase input termination power supply Vref is stated, the emitter stage of the NPN type triode Q4 is connected by resistance R6
The negative power end of the operational amplifier U2, the negative power end connection power supply VSS of the operational amplifier U2, the pole of voltage stabilizing two
Pipe D4 positive pole connects the emitter stage of the NPN type triode Q4, and the negative pole of the voltage-regulator diode D4 is grounded, the IGBT's
Grid is grounded by resistance R7, and the emitter stage of the IGBT is grounded by the sampling resistor R8, and the colelctor electrode of the IGBT connects
Diode D1 negative pole is connect, the positive pole of the diode D1 connects the in-phase input end of the operational amplifier U2, meanwhile, it is described
IGBT colelctor electrode is grounded by electric capacity C2.
2. marine generator voltage-regulating system according to claim 1, it is characterised in that also including for carrying out current potential
Photocoupler U1 and resistance R1, resistance R2, resistance R4, the NPN type triode Q1 of isolation, wherein, power supply VCC passes through described
Resistance R1 connections photocoupler U1 electrode input end, the negative pole that pwm signal is input to the photocoupler U1 is defeated
Enter end, the collector output of the photocoupler U1 is by resistance R2 connection power supply VCC, while the photocoupler U1
Collector output connect the base stage of the NPN type triode Q1, the colelctor electrode connection power supply of the NPN type triode Q1
VCC, the NPN type triode Q1 emitter stage connect the base stage and the PNP type triode Q3 of the NPN type triode Q2
Base stage, the hair that the emitter stage output end of the photocoupler U1 passes through the resistance R4 connections NPN type triode Q1
Emitter-base bandgap grading.
3. marine generator voltage-regulating system according to claim 1, it is characterised in that using 1200V45A's
IGBT。
4. marine generator voltage-regulating system according to claim 1, it is characterised in that described drive module and institute
The line for stating IGBT is less than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720056640.3U CN206602476U (en) | 2017-01-18 | 2017-01-18 | A kind of marine generator voltage-regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720056640.3U CN206602476U (en) | 2017-01-18 | 2017-01-18 | A kind of marine generator voltage-regulating system |
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| Publication Number | Publication Date |
|---|---|
| CN206602476U true CN206602476U (en) | 2017-10-31 |
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ID=60148401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720056640.3U Expired - Fee Related CN206602476U (en) | 2017-01-18 | 2017-01-18 | A kind of marine generator voltage-regulating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206602476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217262A (en) * | 2018-10-22 | 2019-01-15 | 国家电网公司东北分部 | Metal-oxide-semiconductor drives under-voltage protecting circuit in a kind of high power switch amplifier |
| CN110880892A (en) * | 2019-11-05 | 2020-03-13 | 武汉武水电气技术有限责任公司 | Control system of excitation adjusting device |
-
2017
- 2017-01-18 CN CN201720056640.3U patent/CN206602476U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217262A (en) * | 2018-10-22 | 2019-01-15 | 国家电网公司东北分部 | Metal-oxide-semiconductor drives under-voltage protecting circuit in a kind of high power switch amplifier |
| CN109217262B (en) * | 2018-10-22 | 2021-10-26 | 国家电网公司东北分部 | MOS tube driving undervoltage protection circuit in high-power switching amplifier |
| CN110880892A (en) * | 2019-11-05 | 2020-03-13 | 武汉武水电气技术有限责任公司 | Control system of excitation adjusting device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171031 Termination date: 20180118 |