CN110501625A - A kind of IGBT saturation tube voltage drop on-line measurement circuit - Google Patents
A kind of IGBT saturation tube voltage drop on-line measurement circuit Download PDFInfo
- Publication number
- CN110501625A CN110501625A CN201910865526.9A CN201910865526A CN110501625A CN 110501625 A CN110501625 A CN 110501625A CN 201910865526 A CN201910865526 A CN 201910865526A CN 110501625 A CN110501625 A CN 110501625A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- igbt
- amplifier
- voltage drop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 230000003750 conditioning effect Effects 0.000 claims abstract description 38
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 9
- 230000001052 transient effect Effects 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000000295 complement effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2608—Circuits therefor for testing bipolar transistors
Abstract
A kind of IGBT saturation tube voltage drop on-line measurement circuit, the measuring circuit input terminates between the collection emitter-base bandgap grading of IGBT, including input saturation Acquisition Circuit and signal conditioning circuit；Input saturation Acquisition Circuit output end connection signal conditioning circuit input terminal is saturated tube voltage drop measuring signal by signal conditioning circuit output end output IGBT.The input saturation Acquisition Circuit is connected in series to the capacitor after circuit in parallel by resistance series circuit and is composed in series again with transient voltage suppressor diode, and the signal conditioning circuit is made of sequentially connected prime signal conditioning circuit and rear class filtering circuit.It is added in the work for not influencing IGBT when the both ends IGBT are acquired, on-line measurement for field of power electronics IGBT saturation tube voltage drop, especially full-bridge, the half-bridge module of high pressure IGBT or PP-IGBT composition are saturated the On-line sampling system of tube voltage drop in test or work, it can be achieved that On-line sampling system is for Correlation method for data processing and uploads record.
Description
Technical field
The present invention relates to power electronics field, in particular to a kind of IGBT is saturated tube voltage drop on-line measurement circuit.
Background technique
IGBT (insulated gate bipolar transistor) is widely used in the fields such as power electronics, as a kind of power type semiconductor
Controllable switch element, reliability have vital influence to product.At present for IGBT working condition and failure analysis
It is more feasible, effectively using the variation of IGBT saturation tube voltage drop as identification characteristics amount in research.
The characterisitic parameter measurement of single IGBT, has many dedicated, with high accuracy in device producer or third-party testing mechanism
Test equipment, but IGBT is constantly in switch state in actual circuit, and device collection emitter-base bandgap grading both end voltage constantly changes at a high speed, such as
On the power cell of flexible DC transmission, voltage thousands of volts when off, and while being connected upper kilo-ampere electric current only several volt tube voltage drops,
Common test method can not be applied, so needing strong, high pressure resistant, input bandwidth the tube voltage drop real-time detection electricity of vulnerability to jamming
Road.
Summary of the invention
In order to solve the technical problem in background technique, the present invention provides a kind of IGBT saturation tube voltage drop on-line measurement electricity
Road is added in the work for not influencing IGBT when the both ends IGBT are acquired, for field of power electronics IGBT saturation tube voltage drop
Line measurement, especially high pressure IGBT or PP-IGBT composition full-bridge, half-bridge module be saturated in test or work tube voltage drop
Line real-time measurement is, it can be achieved that On-line sampling system is for Correlation method for data processing and uploads record.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of IGBT is saturated tube voltage drop on-line measurement circuit, the measuring circuit input terminate at IGBT collection emitter-base bandgap grading it
Between, including input saturation Acquisition Circuit and signal conditioning circuit；Input saturation Acquisition Circuit output end connection signal conditioning circuit
Input terminal is saturated tube voltage drop measuring signal by signal conditioning circuit output end output IGBT.
The input saturation Acquisition Circuit by resistance series circuit be connected in series to the capacitor after circuit in parallel again with transient voltage
Inhibit Diode series composition, resistance series circuit is in series by multiple resistance, and capacitor seriesing circuit is connected by multiple capacitors
It constitutes.
The signal conditioning circuit is made of sequentially connected prime signal conditioning circuit and rear class filtering circuit.
Further, the prime signal conditioning circuit is made of the first amplifier U1A and its peripheral circuit, the first amplifier
The peripheral circuit of U1A includes first resistor Ra1, second resistance Ra2,3rd resistor Ra3, the 4th resistance Ra4, first capacitor Ca1
Composition, the output end of input saturation Acquisition Circuit access the first input end of the first amplifier U1A, and first input end is also via third
Resistance Ra3 ground connection；First resistor Ra1 is connected between the output end and the second input terminal of the first amplifier U1A；Second resistance Ra2
After connecting with the 4th resistance Ra4, one end connects the second input terminal of the first amplifier U1A, other end ground connection；First capacitor Ca1 is simultaneously
It is associated in the both ends first resistor Ra1.
Further, the rear class filtering circuit is made of the second amplifier U1B and its peripheral circuit, the first amplifier U1A
Peripheral circuit include the 6th resistance Rb1, the 7th resistance Rb2, the 8th resistance Rb3, the 9th resistance Rb4, the tenth resistance Rb5 and the
Two capacitor Cb1, third capacitor Cb2 composition, the output end of the first amplifier U1A are sequentially connected in series the 6th resistance Rb1 and the 8th resistance Rb3
The first input end of the second amplifier U1B is accessed afterwards, and the 6th resistance Rb1 and the 8th concatenated intermediate point of resistance Rb3 are also via the 7th
Resistance Rb2 ground connection, the 9th resistance Rb4 are connected between the output end and the second input terminal of the second amplifier U1B, the second amplifier U1B
The second input terminal be grounded via the tenth resistance Rb5；Second capacitor Cb1 is connected to the first input end and ground of the second amplifier U1B
Between, third one end capacitor Cb2 is connect with the output end of the second amplifier U1B, and the other end connects the 6th resistance Rb1 and the 8th resistance
The concatenated intermediate point of Rb3.
The IGBT saturation tube voltage drop measuring signal of signal conditioning circuit output end output is sent in data processing MCU.
Further, the measuring circuit further includes signal feedback compensation circuit, the feedback letter issued by master control set
It number is connected in signal conditioning circuit via signal feedback compensation circuit.Further, the signal feedback compensation circuit packet
Include DAC conversion circuit and the 5th resistance Ra5, feedback signal via after DAC digital-to-analogue conversion through being connected to second by the 5th resistance Ra5
The series connection intermediate point of resistance Ra2 and the 4th resistance Ra4.
Compared with prior art, the beneficial effects of the present invention are:
1) this circuit be added in the work for not influencing IGBT when the both ends IGBT are acquired, it can be achieved that On-line sampling system for
Correlation method for data processing and upload record.IGBT can be assessed according to the saturation voltage drop of acquisition in and whether is worked and is led in specified
It flows in section.For the on-line measurement of field of power electronics IGBT saturation tube voltage drop, especially high pressure IGBT or PP-IGBT composition
Full-bridge, half-bridge module the On-line sampling system of tube voltage drop is saturated in test or work, be suitble to the work of real time monitoring IGBT
State and health status.
2) in input saturation Acquisition Circuit, concatenated multiple capacitor C1~Cn are phase correction capacitor in circuit, be can compensate for
Because resistance and diode junction capacitance series connection the number of winning the confidence caused by phase lag signal, guarantee that circuit has good transient response and foot
Enough input bandwidth.
3) signal conditioning circuit has high input impedance, low output impedance, and has higher input frequency and higher total
Mould inhibits ratio.First capacitor Ca1 be phase compensation capacitor, can complement signal conditioning circuit delayed phase.
Detailed description of the invention
Fig. 1 is the entire block diagram of measuring circuit of the invention；
Fig. 2 is 1 circuit diagram of the embodiment of the present invention；
Fig. 3 is 2 circuit diagram of the embodiment of the present invention；
Fig. 4 is 3 circuit diagram of the embodiment of the present invention；
Fig. 5 is that tube voltage drop measuring circuit connection schematic diagram is saturated in the half-bridge structure of high pressure IGBT composition；
Fig. 6 is the measuring circuit embodiment overall structure block diagram of invention.
In figure: 1- input saturation Acquisition Circuit 2- prime signal conditioning circuit 3- rear class filtering circuit 4- feedback compensation
Circuit.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
As shown in Fig. 1,5,6, a kind of IGBT saturation tube voltage drop on-line measurement circuit, the measuring circuit includes input limit
Width Acquisition Circuit 1 and signal conditioning circuit；The input terminal Vce of input saturation Acquisition Circuit 1 meets collection the emitter-base bandgap grading Vc and Ve in IGBT
Between (the half-bridge structure figure that Vc and Ve are shown in the high pressure IGBT composition of Fig. 5), output end connection signal conditioning circuit input terminal, by believing
Number conditioning circuit output end output IGBT is saturated tube voltage drop measuring signal.Input saturation Acquisition Circuit 1, which filters out, does not need acquisition
High pressure will need the voltage V1 in acquisition voltage range to be sent to signal conditioning circuit, and signal conditioning circuit is by impedance transformation, filter
Output voltage V2 after the processing such as wave noise reduction.Fig. 6 is the overall structure implementation example figure that the present invention is connected to data processing MCU, voltage
V2 is sent in data processing MCU after AD conversion.
As in Figure 2-4, after the input saturation Acquisition Circuit 1 is connected in series to the capacitor circuit in parallel by resistance series circuit
It is composed in series again with TVS pipe D1, D2 (Fig. 2-3 is that D1 and D2 is in parallel, and Fig. 4 is single voltage-stabiliser tube D1), transient voltage inhibits two
Pole pipe D1 and D2 parallel connection improves circuit reliability, and resistance series circuit is in series by multiple resistance R1~Rn, capacitor series connection
Circuit is in series by multiple capacitor C1~Cn.Its voltage class is selected according to clipping demand, and two TVS transient voltages inhibit
The parallel connection of diode improves circuit reliability.Capacitor C1~Cn is phase correction capacitor in circuit, be can compensate for because of resistance and two
Phase lag signal caused by the pole pipe junction capacity series connection number of winning the confidence, guarantees that circuit has good transient response and enough input tapes
It is wide.
The signal conditioning circuit is made of sequentially connected prime signal conditioning circuit 2 and rear class filtering circuit 3.
As shown in Fig. 2, the prime signal conditioning circuit 2 is made of the first amplifier U1A and its peripheral circuit, the first fortune
The peripheral circuit for putting U1A includes first resistor Ra1, second resistance Ra2,3rd resistor Ra3, the 4th resistance Ra4, first capacitor
Ca1 composition, the output end of input saturation Acquisition Circuit 1 access the first input end of the first amplifier U1A, first input end also via
3rd resistor Ra3 ground connection；First resistor Ra1 is connected between the output end and the second input terminal of the first amplifier U1A；Second resistance
After Ra2 connects with the 4th resistance Ra4, one end connects the second input terminal of the first amplifier U1A, other end ground connection；First capacitor Ca1
It is connected in parallel on the both ends first resistor Ra1.With high input impedance, low output impedance, and there is higher input frequency and higher total
Mould inhibits ratio.First capacitor Ca1 be phase compensation capacitor, can complement signal conditioning circuit delayed phase.
The rear class filtering circuit 3 is made of the second amplifier U1B and its peripheral circuit, the periphery electricity of the first amplifier U1A
Road includes the 6th resistance Rb1, the 7th resistance Rb2, the 8th resistance Rb3, the 9th resistance Rb4, the tenth resistance Rb5 and the second capacitor
Cb1, third capacitor Cb2 composition, the output end of the first amplifier U1A access after being sequentially connected in series the 6th resistance Rb1 and the 8th resistance Rb3
The first input end of second amplifier U1B, the 6th resistance Rb1 and the 8th concatenated intermediate point of resistance Rb3 are also via the 7th resistance Rb2
Ground connection, the 9th resistance Rb4 are connected between the output end and the second input terminal of the second amplifier U1B, and the second of the second amplifier U1B is defeated
Enter end to be grounded via the tenth resistance Rb5；Second capacitor Cb1 is connected between the first input end and ground of the second amplifier U1B, third
The one end capacitor Cb2 is connect with the output end of the second amplifier U1B, and it is concatenated that the other end connects the 6th resistance Rb1 and the 8th resistance Rb3
Intermediate point.The effect of rear class filtering circuit 3 be analog signal filtering, wherein can by adjust Rb1, Rb2 ratio and Rb4,
The ratio of Rb5 passes through further to adjust the size of analog signal and adjusts the numerical value of Rb1, Cb2, Rb3, Cb1 filtered electrical is adjusted
The cutoff frequency and Q value on road.
As shown in Figure 1, the measuring circuit further includes signal feedback compensation circuit 4, issued by data processing MCU anti-
Feedback signal is connected in signal conditioning circuit via signal feedback compensation circuit.
As shown in figure 3, the signal feedback compensation circuit 4 includes DAC conversion circuit and the 5th resistance Ra5, feedback letter
Number via after DAC digital-to-analogue conversion through being connected to by the 5th resistance Ra5 the series connection intermediate point of second resistance Ra2 and the 4th resistance Ra4.
DAC conversion circuit is that DAC conversion chip DAC0832, DAC conversion circuit can also be real with programmable resistance making alive a reference source
It is existing.
In the measuring circuit, the resistance value of each resistance is by following configuration: Ra1=Ra3, R1+R2 ...+Rn=Ra2+
Ra4.Ra1=Ra3, R1+R2 ...+Rn=Ra2.Ra5 introduces feedback compensation and adjusts voltage in the signal conditioning circuit of Fig. 3,
When using feedback regulation, Ra4 can not be welded in circuit, R1+R2 ...+Rn=Ra2.If the feedback voltage that Ra5 is introduced is Vf,
Then influence of the feedback voltage to signal conditioning circuit may be expressed as:Meet the feedback tune to output
Section.
Input saturation Acquisition Circuit 1, prime signal conditioning circuit 2 and rear class filtering circuit 3 of the invention can also design
At the scheme of Fig. 4, in Fig. 4, using a D1 transient voltage suppressor diode and resistance, capacitor series connection at clipping Acquisition Circuit 1,
Prime signal conditioning circuit 2 is made of using classical emitter follower, emitter following circuit U1A, Ra1, Ca1, rear class signal condition
Filter circuit 3 is made of U1B, Rb1, Rb2, Rb3, Rb4 and Cb1, Cb2, wherein can be adjusted by adjusting the ratio of Rb1, Rb2
The cutoff frequency and Q value of filter circuit is adjusted in analog signal size, the numerical value by adjusting Rb3, Cb1, Rb4, Cb3.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (6)
1. a kind of IGBT is saturated tube voltage drop on-line measurement circuit, which is characterized in that the measuring circuit input terminates at IGBT
Collection emitter-base bandgap grading between, including input saturation Acquisition Circuit and signal conditioning circuit；Input saturation Acquisition Circuit output end connection letter
Number conditioning circuit input terminal is saturated tube voltage drop measuring signal by signal conditioning circuit output end output IGBT；
The input saturation Acquisition Circuit is connected in series to the capacitor after circuit in parallel by resistance series circuit to be inhibited with transient voltage again
Diode series composition, resistance series circuit is in series by multiple resistance, and capacitor seriesing circuit is in series by multiple capacitors；
The signal conditioning circuit is made of sequentially connected prime signal conditioning circuit and rear class filtering circuit.
2. a kind of IGBT according to claim 1 is saturated tube voltage drop on-line measurement circuit, which is characterized in that the prime
Signal conditioning circuit is made of the first amplifier U1A and its peripheral circuit, and the peripheral circuit of the first amplifier U1A includes first resistor
Ra1, second resistance Ra2,3rd resistor Ra3, the 4th resistance Ra4, first capacitor Ca1 composition, input saturation Acquisition Circuit it is defeated
Outlet accesses the first input end of the first amplifier U1A, and first input end is also grounded via 3rd resistor Ra3；First resistor Ra1 connects
It connects between the output end and the second input terminal of the first amplifier U1A；After second resistance Ra2 connects with the 4th resistance Ra4, one end connects
Connect the second input terminal of the first amplifier U1A, other end ground connection；First capacitor Ca1 is connected in parallel on the both ends first resistor Ra1.
3. a kind of IGBT according to claim 1 is saturated tube voltage drop on-line measurement circuit, which is characterized in that the rear class
Filter circuit is made of the second amplifier U1B and its peripheral circuit, and the peripheral circuit of the first amplifier U1A includes the 6th resistance Rb1, the
Seven resistance Rb2, the 8th resistance Rb3, the 9th resistance Rb4, the tenth resistance Rb5 and the second capacitor Cb1, third capacitor Cb2 composition, the
The output end of one amplifier U1A is sequentially connected in series the first input that the second amplifier U1B is accessed after the 6th resistance Rb1 and the 8th resistance Rb3
End, the 6th resistance Rb1 and the 8th concatenated intermediate point of resistance Rb3 are also grounded via the 7th resistance Rb2, the 9th resistance Rb4 connection
Between the output end and the second input terminal of the second amplifier U1B, the second input terminal of the second amplifier U1B is via the tenth resistance Rb5
Ground connection；Second capacitor Cb1 is connected between the first input end and ground of the second amplifier U1B, third one end capacitor Cb2 and the second fortune
The output end connection of U1B is put, the other end connects the 6th resistance Rb1 and the 8th concatenated intermediate point of resistance Rb3.
4. a kind of IGBT according to claim 1 is saturated tube voltage drop on-line measurement circuit, which is characterized in that signal condition electricity
The IGBT saturation tube voltage drop measuring signal of road output end output is sent in data processing MCU.
5. a kind of IGBT according to claim 1 is saturated tube voltage drop on-line measurement circuit, which is characterized in that further include signal
Feedback compensation circuit, feedback signal are connected in signal conditioning circuit via signal feedback compensation circuit.
6. a kind of IGBT according to claim 2 or 5 is saturated tube voltage drop on-line measurement circuit, which is characterized in that described
Signal feedback compensation circuit includes DAC conversion circuit and the 5th resistance Ra5, feedback signal via after DAC digital-to-analogue conversion through by the
Five resistance Ra5 are connected to the series connection intermediate point of the second resistance Ra2 and the 4th resistance Ra4 of prime signal conditioning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910865526.9A CN110501625B (en) | 2019-09-12 | 2019-09-12 | On-line measuring circuit for voltage drop of IGBT saturation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910865526.9A CN110501625B (en) | 2019-09-12 | 2019-09-12 | On-line measuring circuit for voltage drop of IGBT saturation tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110501625A true CN110501625A (en) | 2019-11-26 |
| CN110501625B CN110501625B (en) | 2024-03-08 |
Family
ID=68591742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910865526.9A Active CN110501625B (en) | 2019-09-12 | 2019-09-12 | On-line measuring circuit for voltage drop of IGBT saturation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110501625B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123061A (en) * | 2019-12-26 | 2020-05-08 | 荣信汇科电气技术有限责任公司 | Quick response forward and reverse pipe voltage drop detection circuit |
| CN112285521A (en) * | 2019-12-27 | 2021-01-29 | 电子科技大学 | Self-correcting IGBT health monitoring method |
| CN114295950A (en) * | 2021-11-29 | 2022-04-08 | 中车永济电机有限公司 | On-line detection device for collector-emitter saturation voltage drop of IGBT device |
| CN116008768A (en) * | 2023-03-24 | 2023-04-25 | 杭州飞仕得科技股份有限公司 | Conduction voltage drop test circuit and junction temperature tester |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326324A (en) * | 2013-06-13 | 2013-09-25 | 浙江海得新能源有限公司 | IGBT module parallel connection protection circuit applied to high-power inverter |
| CN103743940A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply |
| CN204216868U (en) * | 2014-11-12 | 2015-03-18 | 天津电气科学研究院有限公司 | IGBT parallel drive in high-power frequency conversion speed regulating device and detection protective circuit |
| CN204578489U (en) * | 2015-04-27 | 2015-08-19 | 四川省绵竹西南电工设备有限责任公司 | A kind of arc voltage measures voltage divider amplitude limiter |
| CN105466032A (en) * | 2015-12-21 | 2016-04-06 | 上海奉天电子股份有限公司 | Positive temperature coefficient (PTC) water heater over-current detection software and hardware dual protection circuit |
| CN106324472A (en) * | 2016-09-13 | 2017-01-11 | 同济大学 | Non-contact converter IGBT module state monitoring method |
| CN106569014A (en) * | 2016-11-11 | 2017-04-19 | 中国人民解放军海军工程大学 | IGBT collector voltage discrete measurement circuit |
| CN206490661U (en) * | 2017-01-06 | 2017-09-12 | 四川埃姆克伺服科技有限公司 | Igbt drive circuit |
| WO2018126554A1 (en) * | 2017-01-04 | 2018-07-12 | 广东百事泰电子商务股份有限公司 | Smart correction wave voltage conversion circuit based on pfc, full bridge, and half bridge |
| CN207732627U (en) * | 2017-12-12 | 2018-08-14 | 荣信汇科电气技术有限责任公司 | A kind of IGBT driving powers of Width funtion input |
| CN109596923A (en) * | 2018-12-24 | 2019-04-09 | 日立电梯（中国）有限公司 | Frequency converter bus capacitor on-line measuring device, method and frequency converter |
| CN211263685U (en) * | 2019-09-12 | 2020-08-14 | 荣信汇科电气技术有限责任公司 | IGBT saturation tube voltage drop on-line measuring circuit |
-
2019
- 2019-09-12 CN CN201910865526.9A patent/CN110501625B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326324A (en) * | 2013-06-13 | 2013-09-25 | 浙江海得新能源有限公司 | IGBT module parallel connection protection circuit applied to high-power inverter |
| CN103743940A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply |
| CN204216868U (en) * | 2014-11-12 | 2015-03-18 | 天津电气科学研究院有限公司 | IGBT parallel drive in high-power frequency conversion speed regulating device and detection protective circuit |
| CN204578489U (en) * | 2015-04-27 | 2015-08-19 | 四川省绵竹西南电工设备有限责任公司 | A kind of arc voltage measures voltage divider amplitude limiter |
| CN105466032A (en) * | 2015-12-21 | 2016-04-06 | 上海奉天电子股份有限公司 | Positive temperature coefficient (PTC) water heater over-current detection software and hardware dual protection circuit |
| CN106324472A (en) * | 2016-09-13 | 2017-01-11 | 同济大学 | Non-contact converter IGBT module state monitoring method |
| CN106569014A (en) * | 2016-11-11 | 2017-04-19 | 中国人民解放军海军工程大学 | IGBT collector voltage discrete measurement circuit |
| WO2018126554A1 (en) * | 2017-01-04 | 2018-07-12 | 广东百事泰电子商务股份有限公司 | Smart correction wave voltage conversion circuit based on pfc, full bridge, and half bridge |
| CN206490661U (en) * | 2017-01-06 | 2017-09-12 | 四川埃姆克伺服科技有限公司 | Igbt drive circuit |
| CN207732627U (en) * | 2017-12-12 | 2018-08-14 | 荣信汇科电气技术有限责任公司 | A kind of IGBT driving powers of Width funtion input |
| CN109596923A (en) * | 2018-12-24 | 2019-04-09 | 日立电梯（中国）有限公司 | Frequency converter bus capacitor on-line measuring device, method and frequency converter |
| CN211263685U (en) * | 2019-09-12 | 2020-08-14 | 荣信汇科电气技术有限责任公司 | IGBT saturation tube voltage drop on-line measuring circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123061A (en) * | 2019-12-26 | 2020-05-08 | 荣信汇科电气技术有限责任公司 | Quick response forward and reverse pipe voltage drop detection circuit |
| CN111123061B (en) * | 2019-12-26 | 2021-10-19 | 荣信汇科电气股份有限公司 | Quick response forward and reverse pipe voltage drop detection circuit |
| CN112285521A (en) * | 2019-12-27 | 2021-01-29 | 电子科技大学 | Self-correcting IGBT health monitoring method |
| CN114295950A (en) * | 2021-11-29 | 2022-04-08 | 中车永济电机有限公司 | On-line detection device for collector-emitter saturation voltage drop of IGBT device |
| CN114295950B (en) * | 2021-11-29 | 2023-12-19 | 中车永济电机有限公司 | On-line detection device for collector-emitter saturation voltage drop of IGBT device |
| CN116008768A (en) * | 2023-03-24 | 2023-04-25 | 杭州飞仕得科技股份有限公司 | Conduction voltage drop test circuit and junction temperature tester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110501625B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110501625A (en) | A kind of IGBT saturation tube voltage drop on-line measurement circuit | |
| CN106353549B (en) | A kind of conditioned circuit device and voltage measuring apparatus | |
| CN206387846U (en) | A kind of wide-band capacitor compensating formula resitstance voltage divider | |
| CN103634008A (en) | Multi-channel signal collecting device and collecting method | |
| CN109379095A (en) | A kind of construction of the highway monitoring system based on Internet of Things | |
| CN103841728B (en) | Multichannel loading balanced steady flow control circuit, corresponding electrical combination and control method | |
| CN107666300A (en) | Signal filtering process Compare System based on analog-digital converter | |
| CN104698274B (en) | A kind of spectrum analyzer with local oscillator calibration function | |
| CN109541277A (en) | Full isolated DC voltage sample system and its working method | |
| CN207399155U (en) | Signal filtering process Compare System based on analog-digital converter | |
| CN110266291A (en) | A kind of industrial control system based on Internet of Things | |
| CN207490871U (en) | A kind of multi-frequency band radio-frequency power amplifier | |
| CN211263685U (en) | IGBT saturation tube voltage drop on-line measuring circuit | |
| CN206208961U (en) | A kind of conditioned circuit device | |
| CN204241537U (en) | A kind of current collection circuit | |
| CN206657079U (en) | One kind can position superfrequency cable local discharge detection device | |
| CN208076704U (en) | Small signal source for examining and determine indirect access type direct current energy meter | |
| CN208353322U (en) | A kind of thick film circuit of broadband signal synthesizer | |
| CN107888193A (en) | A kind of signal acquisition circuit and signal picker | |
| CN107395184A (en) | One kind monitors integrated diode array driving power soft switch circuit | |
| CN210514514U (en) | Small signal acquisition circuit applied to power distribution terminal | |
| CN208367085U (en) | A kind of Current Voltage acquisition control module | |
| CN208969162U (en) | A kind of detection circuit of voltage differential sample circuit parameter | |
| CN207150559U (en) | One kind monitors integrated diode array driving power soft switch circuit | |
| CN108183727B (en) | Electricity consumption information interference signal filtering device, electricity consumption information acquisition system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 114000 212 Yue Ling Road, Anshan, Liaoning Applicant after: Rongxin Huike Electric Co.,Ltd. Address before: 114000 212 Yue Ling Road, Anshan, Liaoning Applicant before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |