CN211206705U - IGBT drive board test platform for three-phase unbalance adjusting device - Google Patents
IGBT drive board test platform for three-phase unbalance adjusting device Download PDFInfo
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- CN211206705U CN211206705U CN201921825458.5U CN201921825458U CN211206705U CN 211206705 U CN211206705 U CN 211206705U CN 201921825458 U CN201921825458 U CN 201921825458U CN 211206705 U CN211206705 U CN 211206705U
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- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 238000005070 sampling Methods 0.000 claims abstract description 58
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000004088 simulation Methods 0.000 claims abstract description 3
- 238000012545 processing Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
- 238000013461 design Methods 0.000 description 5
- 238000013024 troubleshooting Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
The utility model particularly relates to an IGBT drive plate test platform for three-phase unbalance adjustment device, which is characterized by comprising a power supply voltage and ripple measuring module, a temperature sampling measuring module, an optical fiber measuring module, a fan measuring module, a BUS sampling and adjustable resistance measuring module, a Hall CT sampling measuring module and a drive signal measuring module; supply voltage and ripple measuring module are used for measuring the voltage and the ripple of the power signal of the board under test, temperature sampling measuring module is used for test platform simulation temperature sensor's resistance, optical fiber measuring module is used for testing the optical fiber communication, fan measuring module is used for testing the fan rotational speed, BUS sampling and adjustable resistance's measuring module is used for testing BUS sampling circuit, adjust adjustable resistance, hall CT sampling measuring module is used for hall CT's sampling measurement, drive signal measuring module is used for measuring drive signal and drive protection. The utility model has the advantages of stable operation is reliable, efficient.
Description
Technical Field
The utility model relates to a power electronic device test platform, concretely relates to IGBT drive plate test platform for unbalanced three phase adjusting device.
Background
The intelligent three-phase unbalance regulator (STUR) is a novel power electronic device for three-phase unbalance, reactive compensation and harmonic control, and can separate out positive and negative zero sequences and reactive and harmonic currents of unbalance currents by using an advanced control algorithm according to the three-phase unbalance currents of a distribution network caused by different time periods or different loads of distribution network users, and enable an inverter to send out offset currents opposite to the zero sequences and reactive compensation and harmonic control by triggering a power device IGBT, so that the effects of eliminating unbalance and compensating reactive and harmonic control are achieved.
The drive plate is used for controlling the IGBT in the unbalanced three-phase device, and the effective on-off of the IGBT influences the function of the electric energy quality treatment device. At present, a CONCEPT drive plate is mostly adopted by an IGBT drive circuit in a domestic electric energy quality treatment device, the drive plate is expensive, the circuit is complex, the troubleshooting time is long, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The aforesaid to prior art exist not enough, the to-be-solved technical problem of the utility model is: the design provides an IGBT drive plate test platform for unbalanced three phase adjusting device, and its job stabilization is reliable, can reduce troubleshooting time by a wide margin, raises the efficiency.
The technical scheme of the utility model is that:
the utility model provides a IGBT drive plate test platform for unbalanced three phase adjusting device which characterized in that includes: the device comprises a power supply voltage and ripple measuring module, a temperature sampling measuring module, an optical fiber measuring module, a fan measuring module, a BUS sampling and adjustable resistance measuring module, a Hall CT sampling measuring module and a driving signal measuring module;
the power supply voltage and ripple wave measuring module is used for measuring the voltage and ripple waves of the 9 paths of power supply signals, and the platform provides an input power supply of +15V for the tested board according to whether the design requirements are met; the amplitude processing is to adjust the voltage signal to a value close to 5V but less than 5V through proportion, because the analog quantity direct current on the control board has 8 circuits, and the measured voltage has 9 circuits, the 1.2V is amplified to be close to 2V in proportion, and enters the AD through an analog quantity alternating current circuit (a hardware circuit raises the voltage to 2.5V before entering the AD); the ripple processing is to amplify the ripple ratio of the analog voltage by 101 times and then enter the AD through the analog quantity AC circuit.
The temperature sampling and measuring module is used for testing the resistance value of the platform simulation temperature sensor, the tested board outputs normal temperature, whether the design requirements are met or not is judged, the TEMP1/2 on the platform controls the resistance through R66 respectively, and when the MOS tube is conducted, the temperature is 60 ℃; at the time of closing, the temperature was 25 ℃.
The optical fiber measurement module is used for testing optical fiber communication, a pair of optical fibers are provided on the test platform for receiving and transmitting, and the optical fibers are fixed on the platform and aligned to the optical fiber interface of the tested plate; the optical fiber on the platform is communicated with the optical fiber of the tested plate (the transmission on the platform corresponds to the reception of the tested plate);
the fan measuring module is used for testing the rotating speed of the fan, the fan is provided in the testing platform, the board to be tested is connected with a fan interface on the platform through a probe, the current rotating speed testing condition of the board to be tested is reflected on one data bit of the state word, the state word is sent to the upper computer after the platform receives the state word through the optical fiber, and the upper computer judges whether the rotating speed sampling circuit works normally or not according to the current data bit representing the rotating speed;
the BUS sampling and adjustable resistance measuring module is used for testing the BUS sampling circuit and adjusting the adjustable resistance;
the test step 1) is that the platform provides BUS sampling voltage, and the maximum value of the voltage is about 509.12V by connecting a series resistor; when the relay 1 is attracted, the BUS + is switched on, the relay 2 is grounded when normal, and the relay is connected with the BUS-when attracted; the FPGA of the tested board receives a signal (AIN _ BUS) before entering the A/D module and the signal is a direct current quantity smaller than 5V; the platform receives the bus voltage sampled by the tested board through the optical fiber, and then sends the bus voltage back to the upper computer, and the upper computer judges whether the sampling circuit is normal or not;
testing step 2), the BUS samples the input voltage (BUS-suction and BUS +) short circuit, and S adjusts the adjustable resistor, when the amplitude of the AIN _ BUS (which enters the test platform AD through an analog quantity alternating current path after being amplified by 101 times) is minimum;
and 3) testing the BUS sampling again after the adjustable resistance is adjusted.
The Hall CT sampling and measuring module is used for sampling and measuring the Hall CT, the platform outputs a signal less than +/-15V, the direct-current component of the signal before entering the A/D module of the measured plate is 2.5V, and the sampling ratio 3/15 is 0.2; the platform provides a sampling voltage of 5V and is connected to the sampling input of the Hall CT; the platform receives CT values sampled by the tested board through the optical fiber, and then the platform sends the sampled values back to the upper computer, and the upper computer judges whether the sampling circuit works normally or not;
the drive signal measurement module is used for measuring a drive signal and drive protection, the platform sends a control period value and a PWM comparison value to the tested board according to a test command of the upper computer, the tested board FPGA sends (4 paths of) PWM signals to the drive according to the two received data, the platform tests the period and the high level time of the drive signal sent by the tested board, the period and the high level time data are sent back to the upper computer after the test is finished, the upper computer calculates according to the two data, the real period value and the real duty ratio are solved and compared with an expected value to judge whether the drive signal is normal or not, the platform simulates a so signal according to the current command of the upper computer, the tested board generates a protection state word sending back platform according to the so signal, the platform sends the protection state word back to the upper computer, and the upper computer judges whether the drive protection is normal or not according to the comparison between the current protection state word and the expected state word.
Compared with the prior art, the utility model has the advantages of job stabilization is reliable, efficient. Use the utility model discloses can reduce troubleshooting time by a wide margin.
Drawings
Fig. 1 is a circuit block diagram of the present invention;
fig. 2 is a circuit diagram of the +5V signal circuit of the power supply voltage and ripple measurement module of the present invention;
FIG. 3 is a circuit diagram of a power supply voltage and ripple measurement module-15V signal circuit according to the present invention;
fig. 4 is a circuit diagram of the +12V signal circuit of the power supply voltage and ripple measurement module of the present invention;
fig. 5 is a circuit diagram of the power supply voltage and ripple measurement module +3.3V signal circuit of the present invention;
fig. 6 is a circuit diagram of the power supply voltage and ripple measurement module signal +1.2V circuit of the present invention;
fig. 7 is a circuit diagram of the power supply voltage and ripple measurement module signal +8V circuit of the present invention;
FIG. 8 is a circuit diagram of a power supply voltage and ripple measurement module signal-8V circuit of the present invention;
fig. 9 is a circuit diagram of the power supply voltage and ripple measurement module signal +5VREF circuit of the present invention;
fig. 10 is a circuit diagram of the power supply voltage and ripple measurement module signal +5VA circuit of the present invention;
fig. 11 is a circuit diagram of a temperature sampling signal circuit of the temperature sampling measurement module of the present invention;
fig. 12 is a circuit diagram of an optical fiber signal circuit of the optical fiber measuring module of the present invention;
fig. 13 is a circuit diagram of a fan signal circuit of the fan measuring module of the present invention;
FIG. 14 is a circuit diagram of a BUS sampling signal circuit of the BUS sampling and adjustable resistance measurement module of the present invention;
fig. 15 is a circuit diagram of the sampling signal circuit of the hall CT sampling measurement module of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises: the device comprises a power supply voltage and ripple measuring module, a temperature sampling measuring module, an optical fiber measuring module, a fan measuring module, a BUS sampling and adjustable resistance measuring module, a Hall CT sampling measuring module and a driving signal measuring module;
as shown in fig. 2-10: the power supply voltage and ripple measuring module measures the voltage and ripple of the 9 paths of power supply signals, and the platform provides an input power supply of +15V for the measured board to see whether the design requirements are met; the amplitude processing is to adjust the voltage signal to a value close to 5V but less than 5V through proportion, because the analog quantity direct current on the control board has 8 channels, and the measured voltage has 9 channels, the 1.2V is amplified to be close to 2V in proportion, and enters the AD through an analog quantity alternating current channel (the hardware circuit raises the voltage to 2.5V before entering the AD); the ripple processing is to amplify the ripple ratio of the analog voltage by 101 times and then enter the AD through the analog quantity AC circuit.
The comparison between the measured voltage signal and the signal before entering the test platform AD is shown in the following table:
as shown in fig. 11: the temperature sampling measurement module tests the resistance value of the platform analog temperature sensor, and the tested plate outputs normal temperature to see whether the design requirements are met; the TEMP1/2 on the platform respectively controls the resistance through R66, and when the MOS tube is conducted, the temperature is 60 ℃; at the time of closing, the temperature was 25 ℃.
The measured temperature sensor and test platform analog resistance pair ratio is shown in the following table
As shown in fig. 12: the optical fiber measuring module is used for testing whether the optical fiber is in normal communication or not, a pair of optical fiber receiving and transmitting is provided on the testing platform, the optical fiber is fixed on the platform and is aligned to the optical fiber interface of the tested plate; the optical fiber on the platform is communicated with the optical fiber of the tested plate (the transmission on the platform corresponds to the reception of the tested plate);
as shown in fig. 13: the fan measuring module is used for testing whether the rotating speed of the fan is normal or not; a fan is provided in the test platform, and the board to be tested is connected with a fan interface on the platform through a probe; the tested board reflects the normal or abnormal condition of the current rotating speed test on one data bit of the status word. After the platform receives the state words through the optical fibers, the state words are sent to the upper computer, and the upper computer judges whether the rotating speed sampling circuit works normally or not according to the current data bits representing the rotating speed.
As shown in fig. 14: the BUS sampling and adjustable resistance measuring module is used for testing whether a BUS sampling circuit is normal or not and adjusting the adjustable resistance; the testing step 1, the platform provides BUS sampling voltage, and the maximum value of the voltage is about 509.12V by connecting a series resistor; when the relay 1 is attracted, the BUS + is switched on, the relay 2 is grounded when normal, and the relay is connected with the BUS-when attracted; the FPGA of the tested board receives a signal (AIN _ BUS) before the signal enters the AD, and the direct current quantity is less than 5V; the platform can receive the bus voltage sampled by the tested board through the optical fiber, and then sends the bus voltage back to the upper computer, and the upper computer judges whether the sampling circuit is normal or not; the test step 2, the BUS samples the input voltage (BUS-suction and BUS +) short circuit, the S adjusts the adjustable resistance, when the amplitude of the AIN _ BUS (which enters the test platform AD through an analog quantity alternating current path after being amplified by 101 times) is minimum; and 3, testing the BUS sampling again after the adjustable resistance is adjusted.
The following table is the BUS sampled and adjustable resistance signal
As shown in fig. 15: when the Hall CT sampling measurement module is used, the platform outputs a signal less than +/-15V, the direct-current component of the signal before entering the AD of the measured plate is 2.5V, and the sampling ratio 3/15 is 0.2;
the platform provides a sampling voltage of 5V and is connected to the sampling input of the Hall CT; the platform receives CT values sampled by the tested board through the optical fiber, and then the platform sends the sampled values back to the upper computer, and the upper computer judges whether the sampling circuit works normally or not;
when the driving signal measuring module is used, the platform sends a control period value and a PWM (pulse-width modulation) comparison value to the tested board according to a test command of the upper computer, and the FPGA of the tested board sends (4 paths of) PWM signals to the driver according to the received two data. And the platform tests the period and the high level time of the driving signal sent by the tested board, and sends the period and the high level time data back to the upper computer after the test is finished. The upper computer calculates according to the two data, calculates the real period value and duty ratio and compares the real period value and duty ratio with the expected value to judge whether the driving signal is normal or not;
the platform simulates so signals according to the current command of the upper computer, the tested board generates a protection state word retransmission platform according to the so signals, the platform retransmits the protection state word to the upper computer, and the upper computer judges whether the drive protection is normal or not according to the comparison between the current protection state word and the expected state word.
Claims (1)
1. An IGBT drive board test platform for a three-phase unbalance adjusting device is characterized by comprising a power supply voltage and ripple measuring module, a temperature sampling measuring module, an optical fiber measuring module, a fan measuring module, a BUS sampling and adjustable resistance measuring module, a Hall CT sampling measuring module and a drive signal measuring module;
the device comprises a power supply voltage and ripple wave measuring module, a test platform, an analog quantity alternating current circuit and an A/D module, wherein the power supply voltage and ripple wave measuring module is used for measuring the voltage and ripple waves of a power supply signal of a tested plate, the test platform provides +15V of input power supply for the tested plate, the amplitude value processing leads the voltage signal to enter the A/D module through the analog quantity alternating current circuit after being subjected to proportion adjustment, and the ripple wave processing leads the ripple wave of the analog voltage to enter the A/D module through the analog quantity;
the temperature sampling and measuring module is used for testing the resistance value of the platform simulation temperature sensor, the tested plate outputs normal temperature, the TEMP1/2 on the platform controls the resistance through R66 respectively, and when the MOS tube is conducted, the temperature is 60 ℃; at the time of closing, the temperature is 25 ℃;
the optical fiber measuring module is used for testing optical fiber communication, a pair of optical fibers are provided on the testing platform for receiving and transmitting, the optical fibers are fixed on the testing platform and aligned with the optical fiber interface of the tested plate, and the optical fibers on the testing platform are communicated with the optical fibers of the tested plate;
the fan measuring module is used for testing the rotating speed of the fan, the fan is provided in the testing platform, the board to be tested is connected with a fan interface on the testing platform through a probe, the current rotating speed testing condition of the board to be tested is reflected on one data bit of the state word, the state word is sent to the upper computer after the testing platform receives the state word through the optical fiber, and the upper computer judges whether the rotating speed sampling circuit works normally or not according to the current data bit representing the rotating speed;
the BUS sampling and adjustable resistance measuring module is used for testing the BUS sampling circuit and adjusting the adjustable resistance;
the Hall CT sampling and measuring module is used for sampling and measuring the Hall CT, the platform outputs a signal less than +/-15V, the direct-current component of the signal before entering the A/D module of the measured plate is 2.5V, and the sampling ratio 3/15 is 0.2; the platform provides a sampling voltage of 5V and is connected to the sampling input of the Hall CT; the platform receives CT values sampled by the tested board through the optical fiber, and then the platform sends the sampled values back to the upper computer, and the upper computer judges whether the sampling circuit works normally or not;
the drive signal measurement module is used for measuring a drive signal and drive protection, the platform sends a control period value and a PWM comparison value to the tested board according to a test command of the upper computer, the tested board FPGA sends a PWM signal to the drive according to the two received data, the platform tests the period and the high level time of the drive signal sent by the tested board, the period and the high level time data are sent back to the upper computer after the test is finished, the upper computer calculates according to the two data, calculates the real period value and the real duty ratio and compares the real period value and the real duty ratio with an expected value to judge whether the drive signal is normal or not, the platform simulates a so signal according to the current command of the upper computer, the tested board generates a protection state word sending back platform according to the so signal, the platform sends the protection state word back to the upper computer, and the upper computer compares the current protection state word with the expected state word to judge whether the drive protection is normal or not.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921825458.5U CN211206705U (en) | 2019-10-29 | 2019-10-29 | IGBT drive board test platform for three-phase unbalance adjusting device |
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| CN201921825458.5U CN211206705U (en) | 2019-10-29 | 2019-10-29 | IGBT drive board test platform for three-phase unbalance adjusting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632502A (en) * | 2019-10-29 | 2019-12-31 | 国网山东省电力公司淄博供电公司 | IGBT drive board test platform for three-phase unbalance adjusting device |
| CN110632502B (en) * | 2019-10-29 | 2024-07-02 | 国网山东省电力公司淄博供电公司 | IGBT driving plate test platform for three-phase unbalance adjusting device |
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2019
- 2019-10-29 CN CN201921825458.5U patent/CN211206705U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632502A (en) * | 2019-10-29 | 2019-12-31 | 国网山东省电力公司淄博供电公司 | IGBT drive board test platform for three-phase unbalance adjusting device |
| CN110632502B (en) * | 2019-10-29 | 2024-07-02 | 国网山东省电力公司淄博供电公司 | IGBT driving plate test platform for three-phase unbalance adjusting device |
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Granted publication date: 20200807 |