CN208384077U - A kind of string type photovoltaic DC-to-AC converter master control board test device - Google Patents
A kind of string type photovoltaic DC-to-AC converter master control board test device Download PDFInfo
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- CN208384077U CN208384077U CN201821132318.5U CN201821132318U CN208384077U CN 208384077 U CN208384077 U CN 208384077U CN 201821132318 U CN201821132318 U CN 201821132318U CN 208384077 U CN208384077 U CN 208384077U
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- master control
- test lead
- control borad
- control board
- string type
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Abstract
The utility model relates to a kind of string type photovoltaic DC-to-AC converter master control board test device, including master control borad interface module, master control borad interface module is equipped with detection test lead, and the detection test lead is used to be connected with the corresponding function end of master control borad to be measured；The detection test lead includes sampled signal test lead, PWM wave test lead, outputs signal testing end and fault detection test lead, the sampled signal test lead is connected with alternating message source and/or DC signal source, the signal testing end of outputing is connected with indicator light, the fault detection test lead is connected with switch, and the PWM wave test lead is connected with oscillograph.A variety of test functions are improved, are simplified and integrated by the device, and the test of the multiple function to master control borad to be measured can be completed, to improve the testing efficiency of master control borad to be measured.
Description
Technical field
The utility model belongs to photovoltaic DC-to-AC converter the field of test technology, and in particular to a kind of string type photovoltaic DC-to-AC converter master control
Board test device.
Background technique
Currently, as the energy and environment crisis that gradually shortage and climate warming cause of global fossil energy is increasingly prominent
Out, because its is resourceful, widely distributed, exploitation prospect is wide etc., that advantages are widely used in solar photovoltaic generation system is existing
The every field of generation life.Wherein, photovoltaic DC-to-AC converter is the equipment that photovoltaic DC electricity is converted to AC energy, is entire photovoltaic hair
The core of electric system plays a key effect in the conversion for realizing solar energy and electric energy.
The master control borad of photovoltaic DC-to-AC converter controls the dress of the switching tube in inverter on each bridge arm for exporting PWM wave
It sets.Accuracy, functional completeness, the quality of performance of its sampled point directly influence the output of photovoltaic DC-to-AC converter, and then influence
To entire photovoltaic generating system.Therefore need to test the master control borad of photovoltaic DC-to-AC converter, to guarantee photovoltaic DC-to-AC converter output
Validity and accuracy.
Traditional is that point function is individually tested to the method for photovoltaic DC-to-AC converter master control borad test, for example, to output PWM test
It is a set of testing tool, is another set of testing tool to sampling test, needs switching to correspond to when carrying out different detecting steps
Testing tool, just make testing efficiency extremely low in this way.
Utility model content
The purpose of this utility model is to provide a kind of string type photovoltaic DC-to-AC converter master control board test devices, existing to solve
The problem for having testing efficiency when testing in technology photovoltaic DC-to-AC converter master control borad low.
In order to solve the above technical problems, the technical solution of the utility model are as follows:
The utility model provides a kind of string type photovoltaic DC-to-AC converter master control board test device, including master control plate interface mould
Block, master control borad interface module are equipped with detection test lead, and the detection test lead is used for and the corresponding function of master control borad to be measured
End is connected；The detection test lead includes sampled signal test lead, PWM wave test lead, outputs signal testing end and fault detection
Test lead, the sampled signal test lead is connected with alternating message source and/or DC signal source, described to output signal testing end company
It is connected to indicator light, the fault detection test lead is connected with switch, and the PWM wave test lead is connected with oscillograph.
The utility model has the beneficial effects that
The test device of the utility model simulates master control borad to be measured by alternating-current voltage source and/or DC voltage source
Sampled input signal is detected by indicator light by switching come the input of simulated failure signal and outputs signal, and can will be to be measured
The PWM wave of master control borad output is extracted and is shown by oscillograph, thus intuitively, fast to the function of master control borad to be measured into
Row detection.A variety of test functions are improved, are simplified and integrated by the device, and the multiple function to master control borad to be measured can be completed
Test saved testing cost to improve the testing efficiency of master control borad to be measured, and then ensure that the steady of master control borad to be measured
Fixed, reliably working and operation.
Further, the detection test lead further includes temperature simulation test lead, and the temperature simulation test lead is connected with
Resistance.
Further, the resistance is fixed value resistance.
Further, the detection test lead further includes communication ends, and the communication ends are connected with liquid crystal display.
It further, further include power supply module, the power supply module includes voltage conversion unit.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of string type photovoltaic DC-to-AC converter master control board test device of the utility model；
Fig. 2 is that one kind outputs signal testing subcircuits figure；
Fig. 3 is a kind of failure input subcircuits figure；
Fig. 4 is power supply module circuit diagram；
Fig. 5 is power indicating circuit figure.
Specific embodiment
The string type photovoltaic DC-to-AC converter master control board test device of the utility model, for testing master control borad to be measured,
To guarantee the reliably working of master control borad to be measured.To make the purpose and realizing that the technical solution of the purpose is clearer, tie below
Accompanying drawings and embodiments are closed, the utility model is described in further detail.
The device includes master control borad interface module, and master control borad interface module is equipped with detection test lead, and detection test lead is used
It is connected in the corresponding function end of master control borad to be measured, to realize the test to master control borad to be measured.
The test item that the device can be realized includes: that PWM wave test, voltage and current sampling, fault-signal are opened into, signal
It outputs, communicate, temperature sampling.In order to realize these test items, as shown in Figure 1, being provided with corresponding detection test lead.
As shown in Figure 1, detection test lead includes sampled signal test lead, sampled signal test lead is connected with a direct current letter
Number source DC and alternating message source AC, the two signal sources connect the test point of master control borad to be measured by corresponding harness, to be measured
Master control borad provides small signal, analog sampling signal.
In order to realize that the failure protection function to master control borad to be measured is tested, detection test lead further includes that fault detection is surveyed
End is tried, fault detection test lead is connected with switch, and by key switch come the input of simulated failure signal, physical circuit can be such as
Shown in Fig. 3.It include that five failures input branch in Fig. 3, every failure input branch road string sets a key switch, respectively
KQ3, KQ4, KQ5, KQ6, KQ7, the also corresponding string respectively in every failure input branch road be equipped with pull-up resistor R7, R8, R9, R10,
One end of R11, every failure input branch connect VCC5.Key switch KQ3~KQ7 in Fig. 3 is to issue high level when pressing
Pulse carrys out the input of simulated failure signal.
In order to realize that the PWM wave to master control borad to be measured output is detected and tested, detection test lead further includes that PWM wave is surveyed
End is tried, PWM wave test lead is connected with oscillograph.The PWM wave that the device exports master control borad to be measured is drawn by route, by showing
Wave device is shown.By the oscillograph can frequency, amplitude, waveform etc. to the PWM wave of output detect, it is to be measured to confirm
The emission function of the PWM of master control borad.
In order to realize the detection and test of outputing signal to master control borad to be measured, detection test lead further includes outputing signal testing
End, outputs signal testing end and is connected with indicator light, physical circuit can be as shown in Figure 2.Include six in Fig. 2 and outputs signal testing
Branch.Output signal testing branch road string for every and be equipped with a LED light and pull down resistor, respectively correspond for D1 and R1, D2 and
R2, D3 and R3, D4 and R4, D5 and R5, D6 and R6.Every is outputed one end ground connection of signal testing branch, and other end connection is to be measured
The signal of master control borad outputs end.When there is signal, by LED light shine whether come indicate to output signal normally export whether.It should
The design for outputing signal testing branch eliminates the circuit of the complexity such as metal-oxide-semiconductor, isolation optocoupler, relay in normal digital output circuit
Structure design, it is simpler, intuitive.
Meanwhile in order to enable test is more comprehensive, detection test lead further includes temperature simulation test lead, passes through Chip-R
Thermocouple is replaced, the resistance of thermocouple is simulated, is convenient for measuring and replaces.
Meanwhile detecting test lead further includes communication ends, communication ends are connected with liquid crystal display, to communicate with master control borad to be measured
Connection, and shown by liquid crystal display, the communication state of real-time display master control borad.
In each functional module of the device, tri- kinds of voltage signals of VCC5 ,+12V, VCC15 are needed.In order to realize to each
The power supply of functional module, design has a power supply module in the device, and circuit diagram by corresponding voltage as shown in figure 4, turned
Unit is changed to generate corresponding voltage signal.The input of the power supply module is VCC24, and the direct current of VCC24 is passed through DC/DC mould
Block U2 is converted into VCC15, is converted into VCC5 by DC/DC module U1, is converted into+12V/-12V by module U3.
In addition, it is whether correct in order to detect the conversion of these three voltages, a power indicating circuit is now designed again, as shown in figure 5,
It is corresponded to respectively by diode D7, diode D8, diode D9, diode D10 and judges the power input of VCC24 whether just
Often, generate whether VCC15 is normal, whether generate VCC5 normal, whether generation+12V is normal.
It is discussed in detail although the content of the utility model has passed through above preferred embodiment, but it should be appreciated that on
The description stated is not considered as limitations of the present invention.After those skilled in the art have read above content, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the protection scope of the utility model should be by appended
Claim limit.
Claims (5)
1. a kind of string type photovoltaic DC-to-AC converter master control board test device, which is characterized in that including master control borad interface module, master control borad
Interface module is equipped with detection test lead, and the detection test lead is used to be connected with the corresponding function end of master control borad to be measured；
The detection test lead includes sampled signal test lead, PWM wave test lead, outputs signal testing end and fault detection test
End, the sampled signal test lead are connected with alternating message source and/or DC signal source, and the signal testing end of outputing is connected with
Indicator light, the fault detection test lead are connected with switch, and the PWM wave test lead is connected with oscillograph.
2. string type photovoltaic DC-to-AC converter master control board test device according to claim 1, which is characterized in that the detection is surveyed
Trying end further includes temperature simulation test lead, and the temperature simulation test lead is connected with resistance.
3. string type photovoltaic DC-to-AC converter master control board test device according to claim 2, which is characterized in that the resistance is
Fixed value resistance.
4. string type photovoltaic DC-to-AC converter master control board test device according to claim 1, which is characterized in that the detection is surveyed
Trying end further includes communication ends, and the communication ends are connected with liquid crystal display.
5. string type photovoltaic DC-to-AC converter master control board test device according to claim 1, which is characterized in that further include power supply
Module, the power supply module include voltage conversion unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821132318.5U CN208384077U (en) | 2018-07-17 | 2018-07-17 | A kind of string type photovoltaic DC-to-AC converter master control board test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821132318.5U CN208384077U (en) | 2018-07-17 | 2018-07-17 | A kind of string type photovoltaic DC-to-AC converter master control board test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208384077U true CN208384077U (en) | 2019-01-15 |
Family
ID=64964283
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821132318.5U Expired - Fee Related CN208384077U (en) | 2018-07-17 | 2018-07-17 | A kind of string type photovoltaic DC-to-AC converter master control board test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208384077U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907721A (en) * | 2019-11-08 | 2020-03-24 | 浙江高成绿能科技有限公司 | Control panel test system |
| CN114002578A (en) * | 2021-11-01 | 2022-02-01 | 江苏华鹏智能仪表科技股份有限公司 | Alternating current pile main control board test system and test method |
-
2018
- 2018-07-17 CN CN201821132318.5U patent/CN208384077U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907721A (en) * | 2019-11-08 | 2020-03-24 | 浙江高成绿能科技有限公司 | Control panel test system |
| CN114002578A (en) * | 2021-11-01 | 2022-02-01 | 江苏华鹏智能仪表科技股份有限公司 | Alternating current pile main control board test system and test method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |