CN103616601B - Test system for wind generating set converter IGBT drive board - Google Patents
Test system for wind generating set converter IGBT drive board Download PDFInfo
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- CN103616601B CN103616601B CN201310659413.6A CN201310659413A CN103616601B CN 103616601 B CN103616601 B CN 103616601B CN 201310659413 A CN201310659413 A CN 201310659413A CN 103616601 B CN103616601 B CN 103616601B
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- optical fiber
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- driving plate
- igbt driving
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Abstract
The invention discloses a test system for a wind generating converter IGBT drive board. The test system comprises an optical fiber control board, an optical fiber receiving board and a drive signal board, wherein the optical fiber control board is in communication connection with the IGBT drive board through optical fibers, the optical fiber receiving board is connected with the IGBT drive board through a cable, and is in communication connection with the optical fiber control board through optical fibers, and the drive signal board is installed on the IGBT drive board and indicates the state of drive signals. The drive board is connected with a detector through optical fibers, a fault circuit can be directly detected without an oscilloscope, the position where an electronic component is damaged by the drive board is directly locked, an electric shock hazard is prevented from occurring on a maintenance test engineer, and the problem that communication signals are not matched is solved.
Description
Technical field
The present invention relates to wind power generating set parts field tests, more particularly to a kind of wind driven generator set converter
The test system of igbt driving plate.
Background technology
The fast development of wind-powered electricity generation industry in recent years leads to the installation amount of wind-powered electricity generation industry to be continuously increased, while installation amount increases
Also spare parts consumption is led to aggravate, the core component igbt driving plate consumption in wind-powered electricity generation generating equipment current transformer also ramps.Cause
The function of driving plate is direct drive igbt, thus the electrical construction of driving plate be high pressure (more than 1000v) and low pressure (24v with
Under) isolation design, there is Danger Electric shock risk in driving plate high voltage functionality, maintenance difficult is larger.
Traditional maintenance conditions mode is by direct for the driving plate keeped in repair on-hook testing results, because current transformer belongs to high pressure
Electrical equipment, does not repair successful driving plate and may cause secondary damage to converter system.
Existing technology is to weld out using wire by all test signal points of driving plate, using conventional instrument: letter
Number signal generator, oscillograph, circuit tester carry out signal feeding and measurement, search driving plate inefficacy circuit positions and keep in repair driving
Plate.
There is following defect in above-mentioned existing detection mode: keeped in repair using conventional test methodologies and tested after welding
Wire solder joint is easily broken off；The driving plate of igbt adopts high pressure power taking technology (more than 1000v), if appearance do not carried out by wire insulation
Easily Danger Electric shock risk occurs, repair dangerous larger；Driving plate signaling interface is many: upper and lower bridge arm drive signal, trigger,
The test such as sampled signal is got up relatively cumbersome；Board communications interface is simultaneously driven to adopt optical fiber interface, general electric signal interface test
Instrument cannot use (signal mismatch)；Upper and lower bridge arm drive signal does not supply ground, and the serial oscillograph in Tyke 3000 cannot use.More than
Various reasons lead to maintenance difficulty to increase, and maintenance cost raises.
As can be seen here, the test system of above-mentioned existing wind driven generator set converter igbt driving plate is in structure and use
On, still suffer from inconvenience with defect it would be highly desirable to be further improved.How to found a kind of with igbt driving plate Interface Matching,
The test system of simple, the safe and reliable new wind driven generator set converter igbt driving plate of maintainability test, becomes current industry
Boundary pole needs improved target.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of test system of wind driven generator set converter igbt driving plate
System, makes test system and driving plate Interface Matching, simple to operate, safe and reliable and maintainability test low cost, thus overcome existing
Tester with drive partitioned signal to mismatch, welding test solder joint easy fracture, easily cause the deficiency of high pressure Danger Electric shock risk.
For solving above-mentioned technical problem, the present invention provides a kind of test system of wind driven generator set converter igbt driving plate
System, comprising: by the optical fiber panel of optical fiber and the communication connection of igbt driving plate；Be connected with igbt driving plate by cable and
Optical fiber receiver board by optical fiber and the communication connection of optical fiber panel；And be arranged in igbt driving plate, indicate drive signal
The drive signal plate of state.
Improve as a kind of, described optical fiber panel be provided with temperature triggered signal feeding circuit, current trigger signal to
Determine circuit and upper and lower bridge arm drive signal given circuit, described optical fiber receiver board is provided with temperature triggered signal receiving circuit and electricity
Stream trigger receiving circuit.
The electricity that described current trigger signal feeding circuit includes NAND gate u6b and is connected to NAND gate u6b input
Stream triggering key k5, it is connected to the chip u8 of NAND gate u6b outfan, and chip u8 is provided with light emitting diode；Described temperature is touched
Signalling given circuit include NAND gate u6a and the temperature triggered key k4 being connected to NAND gate u6a input, be connected to non-
The chip u7 of door u6a outfan, and chip u7 is provided with light emitting diode；Described current trigger signal receiving circuit includes receiving
From the chip u3 of current trigger signal feeding circuit signal, and Npn triode q3, pnp being serially connected with chip u3 outfan
Audion q1 and resistance r12；Described temperature triggered signal receiving circuit includes receiving from temperature triggered signal feeding circuit
The chip u4 of signal, and it is serially connected with Npn triode q4, the pnp audion q2 and resistance r13 of chip u4 outfan；Described
Upper and lower bridge arm drive signal given circuit includes triggering key k1, built-in timing circuit and exports pwm arteries and veins when triggering key k1 is connected
Rush signal chip u1, by diode d5 receive chip u1 output signal NAND gate u3a, be connected to NAND gate u3a output
End chip u10, by diode d6 receive chip u1 output signal NAND gate u3b and be connected to NAND gate u3b output
The chip u5 at end, described chip u10, u5 are equipped with light emitting diode.
Described NAND gate u6a, u6b, u3a, u3b adopt sn75451 model.
Described chip u5, u7, u8, u10 adopt hfbr-1528tx, and described chip u3, u4 adopt hfbr-2528rx.
The input voltage of described optical fiber panel is 8v < vpower < 24v.
By the flat cable of two groups of 26pin and one group of 10pin between described optical fiber receiver board and igbt driving plate
Flat cable is attached.
The trigger that the flat cable of two groups of described 26pin is used for for optical fiber panel being sent to optical fiber receiver board passes
Defeated the power supply signal of igbt driving plate is passed to optical fiber receiver board to igbt driving plate simultaneously, described one group of 10pin's is flat
Flat cable is used for transmitting the fault-signal of igbt driving plate feedback to optical fiber receiver board.
Described optical fiber receiver board is provided with display lamp, and described display lamp includes power supply signal display lamp, fault receives and refers to
Show lamp, malfunction coefficient display lamp and use display lamp.
After such design, the present invention at least has the advantage that
1st, all drive signals are integrated in tester the present invention, solve and are easily made using wire extraction test signal
The shortcoming of cable breakage.
2nd, adopt Fiber isolation technology, not only prevent maintainability test engineer from Danger Electric shock risk occurring, and solve communication
The unmatched problem of signal.
3rd, all signals are shown using led interface, thus evading using the serial oscillograph in Tyke 3000, maintenance conditions cost
Relatively low, especially suitable microminiature maintenance company adopts.
4th, driving plate is connected it is not necessary to just can direct detection be out of order loop using oscillograph by optical fiber with detector,
Directly locking driving plate damages electronic devices and components position.
Brief description
Above-mentioned be only technical solution of the present invention general introduction, in order to better understand the technological means of the present invention, below
In conjunction with accompanying drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is a kind of structural representation of the test system of present invention wind driven generator set converter igbt driving plate.
Fig. 2 is the current trigger signal feeding circuit diagram of the present invention.
Fig. 3 is the temperature triggered signal feeding circuit diagram of the present invention.
Fig. 4 is the current trigger signal receiving circuit figure of the present invention.
Fig. 5 is the temperature triggered signal receiving circuit figure of the present invention.
Fig. 6 is the upper and lower bridge arm drive signal given circuit figure of the present invention.
Specific embodiment
With reference to shown in Fig. 1, the present invention provides a kind of test system of wind driven generator set converter igbt driving plate, bag
Include: by the optical fiber panel of optical fiber and the communication connection of igbt driving plate；It is connected with igbt driving plate by cable and pass through light
The fine optical fiber receiver board with the communication connection of optical fiber panel；And be arranged in igbt driving plate, instruction driving status signal
Drive signal plate.
Optical fiber panel is passed through 4 optical fiber and is communicated to connect with optical fiber receiver board and ibgt driving plate respectively, wherein, controls electricity
The optical fiber of stream triggering and temperature triggered is connected with optical fiber receiver board, and in control, brachium pontis drives the optical fiber driving with lower brachium pontis and igbt
Driving plate connects.The input voltage of optical fiber panel is 8v < vpower < 24v, and employs optical fiber and igbt driving board communications,
Therefore can prevent testing staff's high pressure from getting an electric shock.
Preferably, optical fiber panel is also associated with power supply adaptor, power supply adaptor direct phase with 220v/ac alternating current
Even, and by cable the 12v/dc unidirectional current after changing is supplied optical fiber panel.
Optical fiber receiver board is provided with the display lamp of display signal, including power supply signal display lamp, fault codan lamp, fault
Show display lamp and use display lamp.Power supply signal display lamp indicates driving plate ± 15v power supply signal, malfunction coefficient display lamp bag
Include temperature fault display lamp, current failure display lamp and power failure lamp, logical between optical fiber receiver board and igbt driving plate
The flat cable of the flat cable and one group of 10pin of crossing two groups of 26pin is attached, and the flat cable of two groups of 26pin can be by light
The temperature signal triggering that fine panel is sent to optical fiber receiver board is transferred to igbt driving plate, simultaneously with current signal trigger
Power supply signal is passed to optical fiber receiver board by igbt driving plate, as the detection of ± 15v power supply signal, the flat electricity of one group of 10pin
Cable can send igbt driving plate current feedback fault-signal, Temperature Feedback fault-signal and power supply feedback fault-signal to optical fiber
Receiver board.Drive signal plate is plugged in igbt driving plate, is provided with display lamp above, indicates driving status signal.
Due to the generation of temperature triggered signal feeding and current trigger signal feeding and record principle one in optical fiber panel
Cause, below be mainly further explained taking temperature triggered signal as a example.
With reference to shown in Fig. 2, current trigger signal feeding circuit is mainly by NAND gate u6b and be connected to u6b input
Current trigger key k5, be connected to u6b outfan chip u8 composition.
With reference to shown in Fig. 3, temperature triggered signal feeding circuit is mainly by NAND gate u6a and be connected to u6a input
Temperature triggered key k4, be connected to u6a outfan chip u7 composition.When pressing temperature triggered key k4, one of NAND gate u6a defeated
Enter foot 7 foot and high level (5v), the output pin 5 foot open circuit of u6a are changed into from low level (0v), low electricity is changed into from high level
Flat, electric current through chip u7, lights the light emitting diode within chip u7 after resistance r11 current limliting, triggers fiber-optic signal
Be given.
With reference to shown in Fig. 4, current trigger signal receiving circuit is mainly believed from current trigger signal feeding circuit by reception
Number chip u3, and be serially connected with u3 outfan Npn triode q3, pnp audion q1 and resistance r12 composition.
With reference to shown in Fig. 5, temperature triggered signal receiving circuit is mainly believed from temperature triggered signal feeding circuit by reception
Number chip u4, and be serially connected with u4 outfan Npn triode q4, pnp audion q2 and resistance r13 composition.When optical fiber connects
When receipts plate receives the fiber-optic signal that temperature triggered signal feeding circuit sends, the chip u4's of temperature triggered signal receiving circuit
1 foot is changed into low level (0v) from original high level (5v), leads to q2, q4 to be changed into cut-off state from conducting state, r13 and q2's
Colelctor electrode overtemp_trip point is changed into 0v from 15v, and that is, temperature triggered signal receives successfully.
After optical fiber panel produces temperature triggered signal and current trigger signal, optical fiber receiver board is sent to by optical fiber,
After optical fiber receiver board receives trigger, it is sent in igbt driving plate by the flat cable of 26pin.Igbt driving plate connects
After receiving trigger, carry out inclusive-OR operation in plate, afterwards temperature triggered signal and current trigger signal are passed through 10pin flat
Flat cable passes to optical fiber receiver board.If igbt drives plate temperature or current failure, the signal that optical fiber receiver board receives is
Low level 0v, on the contrary the signal that optical fiber receiver board receives is normal for high level 15v.Optical fiber receiver board detects temperature and electric current
Show the state value of whether fault after signal by led, driving plate is completed to temperature triggered fault and electricity by above flow process
The detection of stream triggering fault.
With reference to shown in Fig. 6, upper and lower bridge arm drive signal given circuit in optical fiber panel, including triggering key k1, built-in
Timing circuit is simultaneously exported the chip u1 of pwm pulse signal, is received chip u1 output by diode d5 when triggering key k1 is connected
NAND gate u3a of signal, be connected to NAND gate u3a outfan chip u10, by diode d6 receive chip u1 output signal
NAND gate u3b and the chip u5 being connected to NAND gate u3b outfan, described chip u10, u5 are equipped with light emitting diode.
Start timing circuit 555, the 3 foot output pwm pulse signals of u1 when pressing k1 key, pwm signal gives through diode d5, d6
To after 7 feet of 2 feet and the u3a of NAND gate u3b, the lumination of light emitting diode of driving chip u5, u10, produce upper and lower bridge arm and drive
Signal, completes upper and lower bridge arm drive signal and gives.
Optical fiber panel occurs circuit to produce upper and lower bridge arm drive signal by pwm, and upper and lower bridge arm drive signal passes through light
Fine interface is sent to igbt driving plate, and igbt driving plate is shown by drive signal plate after receiving upper and lower bridge arm drive signal
Whether lower brachium pontis drive signal is normal, thus completing the detection of upper and lower bridge arm drive signal.
Drive in the igbt gate leve of igbt driving plate, on contact pin, drive signal plate is installed, when optical fiber panel sends upper brachium pontis
During drive signal, if bridge arm circuit is normal in igbt driving plate, it is arranged on igbt gate leve and drives the drive signal plate on contact pin
Upper brachium pontis led can light, if drive signal has been given by but upper brachium pontis led presents OFF state, in igbt driving plate
Brachium pontis drive circuit fault, on the contrary he brachium pontis detection method under igbt driving plate can be released.
In the present embodiment, described NAND gate u6a, u6b, u3a, u3b are preferably sn75451, chip u1, u3, u4, u5,
U7, u8, u10 are preferably opto-coupler chip, and described chip u5, u7, u8, u10 are preferably hfbr-1528tx, and described chip u3, u4 are excellent
Elect hfbr-2528rx as.
The above, be only presently preferred embodiments of the present invention, and not the present invention is made with any pro forma restriction, this
Skilled person makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this
In bright protection domain.
Claims (8)
1. a kind of test system of wind driven generator set converter igbt driving plate it is characterised in that include: by optical fiber with
The optical fiber panel of igbt driving plate communication connection；It is connected and passes through optical fiber to control with optical fiber by cable with igbt driving plate
The optical fiber receiver board that board communications connect；And be arranged in igbt driving plate, the drive signal plate of instruction driving status signal；
Described optical fiber panel is provided with temperature triggered signal feeding circuit, current trigger signal feeding circuit and upper and lower bridge arm and drives
Dynamic signal feeding circuit, described optical fiber receiver board is provided with temperature triggered signal receiving circuit and current trigger signal receives electricity
Road.
2. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 1, its feature exists
In:
Described current trigger signal feeding circuit include NAND gate u6b and be connected to NAND gate u6b input electric current touch
Send out key k5, be connected to the chip u8 of NAND gate u6b outfan, and chip u8 is provided with light emitting diode；
Described temperature triggered signal feeding circuit include NAND gate u6a and be connected to NAND gate u6a input temperature touch
Send out key k4, be connected to the chip u7 of NAND gate u6a outfan, and chip u7 is provided with light emitting diode；
Described current trigger signal receiving circuit includes receiving the chip u3 from current trigger signal feeding circuit signal, with
And it is serially connected with Npn triode q3, the pnp audion q1 and resistance r12 of chip u3 outfan；
Described temperature triggered signal receiving circuit includes receiving the chip u4 from temperature triggered signal feeding circuit signal, with
And it is serially connected with Npn triode q4, the pnp audion q2 and resistance r13 of chip u4 outfan；
Described upper and lower bridge arm drive signal given circuit includes triggering key k1, built-in timing circuit when triggering key k1 is connected
Output pwm pulse signal chip u1, by diode d5 receive chip u1 output signal NAND gate u3a, be connected to non-
The chip u10 of door u3a outfan, received by diode d6 NAND gate u3b of chip u1 output signal and be connected to non-
The chip u5 of door u3b outfan, described chip u10, u5 are equipped with light emitting diode.
3. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 2, its feature exists
In: described NAND gate u6a, u6b, u3a, u3b adopt sn75451 model.
4. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 2, its feature exists
In: described chip u5, u7, u8, u10 adopt hfbr-1528tx, and described chip u3, u4 adopt hfbr-2528rx.
5. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 1, its feature exists
In: the input voltage of described optical fiber panel is 8v < vpower < 24v.
6. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 1, its feature exists
In: pass through the flat cable of two groups of 26pin and the flat electricity of one group of 10pin between described optical fiber receiver board and igbt driving plate
Cable is attached.
7. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 6, its feature exists
In: the trigger that the flat cable of two groups of described 26pin is used for for optical fiber panel being sent to optical fiber receiver board is transferred to
The power supply signal of igbt driving plate is passed to optical fiber receiver board by igbt driving plate simultaneously, the flat electricity of described one group of 10pin
Cable is used for transmitting the fault-signal of igbt driving plate feedback to optical fiber receiver board.
8. the test system of a kind of wind driven generator set converter igbt driving plate according to claim 1, its feature exists
In: described optical fiber receiver board is provided with display lamp, described display lamp include power supply signal display lamp, fault codan lamp,
Malfunction coefficient display lamp and use display lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310659413.6A CN103616601B (en) | 2013-12-09 | 2013-12-09 | Test system for wind generating set converter IGBT drive board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659413.6A CN103616601B (en) | 2013-12-09 | 2013-12-09 | Test system for wind generating set converter IGBT drive board |
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| Publication Number | Publication Date |
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| CN103616601A CN103616601A (en) | 2014-03-05 |
| CN103616601B true CN103616601B (en) | 2017-01-25 |
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| CN201310659413.6A Active CN103616601B (en) | 2013-12-09 | 2013-12-09 | Test system for wind generating set converter IGBT drive board |
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Families Citing this family (1)
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| CN114280447B (en) * | 2021-11-18 | 2023-12-19 | 中车永济电机有限公司 | Pulse signal testing device and method for rail transit power converter |
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