CN108957271A - A kind of IGBT driving over current fault monitoring method and device - Google Patents
A kind of IGBT driving over current fault monitoring method and device Download PDFInfo
- Publication number
- CN108957271A CN108957271A CN201710385456.8A CN201710385456A CN108957271A CN 108957271 A CN108957271 A CN 108957271A CN 201710385456 A CN201710385456 A CN 201710385456A CN 108957271 A CN108957271 A CN 108957271A
- Authority
- CN
- China
- Prior art keywords
- igbt
- fault
- monitoring
- over current
- alarm signal
- 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
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
- G01R31/2601—Apparatus or methods therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
Abstract
The present invention relates to a kind of IGBT to drive over current fault monitoring method and device, the measurement voltage between the collector and emitter of this method real-time monitoring IGBT；The fault level where IGBT, the voltage range of the corresponding setting of corresponding fault level are judged according to measurement voltage；In a fault level, when monitoring that the measurement voltage is in the corresponding voltage range of the fault level every time, then the corresponding overcurrent alarm signal of the fault level is issued, overcurrent alarm signal twice is at least issued.The present invention is not under conditions of changing the detection environment of hardware, logical signal is handled by software control, realize the monitored over time to IGBT in over current fault alarm section, avoid the case where international conventional method is reported by mistake appearance, the reliability and accuracy to the detection of IGBT over current fault are improved, there is higher reference value.
Description
Technical field
The invention belongs to power electronics fields, and in particular to a kind of IGBT driving over current fault monitoring method and dress
It sets.
Background technique
Insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) is as emerging big
Power electronic electronic device has insulating gate type field effect tube (Metal-Oxide-Semiconductor Field-Effect concurrently
Transistor, MOSFET) high input impedance and power transistor (Giant Transistor, GTR) low conduction voltage drop
Both sides advantage, driving power is small and saturation pressure reduces, therefore IGBT is widely applied in AC system, such as exchanges
The fields such as motor, frequency converter, Switching Power Supply, lighting circuit, Traction Drive, especially high pressure flexible direct current field of power transmission, IGBT
It is the core devices of high-voltage large-capacity flexible direct current current transformer, high voltage DC breaker.
IGBT has two-way switch characteristic, its through-current capability determines the rated operational current of the said goods.IGBT drives
Dynamic circuit realizes two aspect functions, on the one hand can drive IGBT module so that IGBT can be worked normally, additionally it is possible to right
IGBT is protected.Monitoring and protection to IGBT over current fault are the important components of IGBT drive circuit.Over current fault
When IGBT occur latching effect, drain current is excessive to cause excessively high power consumption, finally results in the damage of device.
In practical engineering applications, IGBT valve over current fault can be monitored.Due to Vce=Ic*Rce, wherein Ic is
Collector current, voltage of the Vce between collector and emitter, when Ic increases, Vce also be will increase, so, inspection can be passed through
The mode of voltage Vce between the collector and emitter of IGBT is surveyed intuitively to obtain IGBT over current fault information.Ordinary circumstance
Under, the overcurrent monitoring circuit of the included driving of IGBT, overcurrent monitoring circuit can feedback monitoring measurement voltage Vce.
Moreover, because IGBT is costly, it is not only to set when carrying out alarm limit value setting to IGBT valve over current fault
An alarm limits are set, for example, can be according to IGBT rated current (IN) threshold degree the multiple ranks of setting such as 70%, 80%, 90%
Alarm limit value, i.e., multiple fault levels, the voltage range of the corresponding setting of corresponding fault level just forms different
Over current fault alarm section, concrete condition is as shown in Figure 1, to carry out different degrees of prompting to tester, according to alarm
Rank carries out corresponding safeguard measure.When reaching the 100% of IGBT threshold degree, the Vce monitored is trip value.
Currently, the overcurrent monitoring defencive function of general IGBT drive circuit is the overcurrent in each alarm limits in the world
Fault alarm section only reports an over current fault signal, and this alarm signal is locked, and subsequent monitoring result is no longer quoted,
And the alarm signal that can not automatically reset after over current fault removing.If only reporting an overcurrent alarm signal, it is possible that
The case where wrong report, reliability are extremely low.
Summary of the invention
The purpose of the present invention is to provide a kind of IGBT driving over current fault monitoring method and devices, to solve existing skill
Reliability low problem when only reporting an overcurrent alarm signal to each over current fault alarm section in art.
In order to solve the above technical problems, the technical solution of the present invention is as follows:
A kind of IGBT of the invention drives over current fault monitoring method, includes the following steps:
1) measurement voltage between the collector and emitter of real-time monitoring IGBT；
2) fault level where IGBT, the voltage of the corresponding setting of corresponding fault level are judged according to measurement voltage
Section；
3) in a fault level, monitor that the measurement voltage is in the corresponding voltage range of the fault level every time
When, then the corresponding overcurrent alarm signal of the fault level is issued, overcurrent alarm signal twice is at least issued.
Further, the fault level includes 2 fault levels.
Further, it when the measurement voltage of monitoring is not in any one fault level, then issues and removes overcurrent alarm letter
Number.
A kind of IGBT of the invention drives over current fault monitoring device, including following module:
Module for the measurement voltage between the collector and emitter of real-time monitoring IGBT；
For judging the fault level where IGBT, the electricity of the corresponding setting of corresponding fault level according to measurement voltage
Module between pressure area；
For in a fault level, monitoring that the measurement voltage is in the corresponding voltage zone of the fault level every time
Between when, then issue the corresponding overcurrent alarm signal of the fault level, at least issue the module of overcurrent alarm signal twice.
Further, the fault level includes 2 fault levels.
It further, further include for when the measurement voltage of monitoring is not in any one fault level, sending to be removed
Flow the module of alarm signal.
Beneficial effects of the present invention:
IGBT driving over current fault method of real-time of the invention and device, will monitor the collector and emitter of IGBT
Between voltage make comparisons with the over current fault alarm limits of setting, judgement is and week in which over current fault alarm section
The signal for issuing over current fault alarm of phase property.The present invention passes through software control under conditions of not changing the detection environment of hardware
System handles logical signal, realizes the monitored over time to IGBT in over current fault alarm section, avoids international
Conventional method the case where reporting by mistake occur, improve the reliability and accuracy to the monitoring of IGBT over current fault, have more
High reference value.
Detailed description of the invention
Fig. 1 is over current fault rank classification figure；
Fig. 2 is the current diagram of IGBT over current fault；
Fig. 3 is the monitoring signals of IGBT driving over current fault and the time diagram of control strategy.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, to the present invention
It is described in further detail, but embodiments of the present invention are not limited thereto.
IGBT of the invention drives over current fault monitoring method embodiment:
It the use of software and hardware involved in this method include: the driver of IGBT, higher level's control circuit equipment SCE of IGBT
With the overcurrent monitoring circuit of IGBT driving.These are all the prior arts, no longer do excessive introduction.
Voltage Vce of the voltage of overcurrent monitoring circuit monitoring between collector and emitter, the interior k grade mistake being arranged of program
Stream fault alarm limit value is Vcek(k=1,2 ... ...), the X grade overcurrent alarm signal of setting are FBX(X=1,2 ... ...).Exist
Vce1≤ Vce < Vce2Over current fault alarm section in, be level-one over current fault, the return optical fiber IP of IGBT driving at this time is real
When superior control circuit equipment SCE quote level-one overcurrent alarm signal FB1；In Vce2≤ Vce < Vce3Over current fault alarm
It is second level over current fault in section, the real-time superior control circuit equipment SCE of return optical fiber IP of IGBT driving at this time quotes two
Grade overcurrent alarm signal FB2；And so on.In each over current fault alarm section, enabling signal processing and reporting functions.No
Same overcurrent alarm signal FBXDistinguished by defining the pulse signal of distinct pulse widths in IGBT drive control software and
Identification.It wherein, is Δ t from fault detection to the time interval for quoting overcurrent alarm signal.
Generally, this method is by overcurrent monitoring circuit to the voltage between the collector and emitter of IGBT
Vce carries out real-time monitoring, in each over current fault alarm section, to the actual measurement electricity of the overcurrent monitoring electronic feedback of IGBT driving
Press the over current fault alarm limits Vce of Vce and settingkCompare, according to the result of the comparison, periodically passes through time of IGBT driving
The real-time superior control equipment SCE of report optical fiber IP quotes overcurrent alarm signal FBX。
It is illustrated for two-stage fault alarm limit value is set in IGBT driver below.
One wave time IGBT over current fault waveform is as shown in Fig. 2, the limit value of two-stage over current fault alarm settings is respectively
Vce1And Vce2, corresponding electric current is respectively Ice1And Ice2, corresponding two-stage overcurrent alarm signal is FB1And FB2.Below to whole
The course of work at a moment does detailed introduction.
1) in t0Moment, IGBT triggering and conducting, the overcurrent monitoring function starting of the driver of IGBT.In t0~t1This section
In the period of normal operation, the driver of IGBT overcurrent monitoring circuit real-time monitoring Vce, IGBT by the Vce monitored with
The k grade over current fault alarm limits Vce of settingk(k=1,2 ...) carry out logical comparison.Comparison result discovery, at this moment
Between in section without over current fault, export as no overcurrent alarm signal, monitor timing into next closed loop.
2) in t1The Vce monitored is sent to IGBT driver, IGBT driver hair by moment, overcurrent monitoring circuit
Existing Vce and Vce1Equal, IGBT driver after the time delay of Δ t, is determining starting alarm signal and is passing through return
Optical fiber IP quotes the 1st level-one overcurrent alarm signal FB to module control unit SCE1, the setting of alarm signal can be as in Fig. 3
IP1It is shown.Then, IGBT driver enters next monitor value judgement period according to timing, works as t1~t2Period in,
If monitoring Vce >=Vce again1, automatic to remove the previous of alarm signal register after the signal processing time of Δ t
New overcurrent alarm signal is placed again into the 2nd level-one overcurrent alarm letter of register and reporting module control unit SCE by information
Number FB1.It in next monitoring cycle, repeats the above process, stores newest monitoring cycle in the register of alarm signal automatically
Overcurrent alarm signal.Until next moment t2Arrival.
3) in t2Moment, when the Vce monitored is sent to IGBT driver, IGBT driver by overcurrent observation circuit
It was found that Vce and Vce2Equal, IGBT driver after the time delay of Δ t, is determining starting alarm signal, and automatic clear
Except the previous information of alarm signal register is (in t1~t2The information of last 1 level-one overcurrent alarm signal between moment),
The 1st second level overcurrent alarm signal FB is quoted to module control unit SCE by return optical fiber IP2, the setting of alarm signal can
With IP in such as Fig. 32It is shown.Then, IGBT driver enters next monitoring judgement period according to timing, repeats above-mentioned mistake
Journey stores the overcurrent alarm signal of newest monitoring cycle in the register of alarm signal automatically.Until moment t3Moment arrives, mistake
Flow Vce >=Vce of observation circuit input IGBT drive control program1, IGBT driver after the time delay of Δ t,
Determine starting alarm signal, and removes the previous information of alarm signal register automatically (in t2~t3Last 1 between moment
The information of a second level overcurrent alarm signal), level-one overcurrent alarm signal is quoted to module control unit SCE by return optical fiber IP
FB1.It in next monitoring cycle, repeats the above process, stores the mistake of newest monitoring cycle in the register of alarm signal automatically
Flow alarm signal.
4) in t4Moment, as the Vce < Vce of overcurrent observation circuit input IGBT drive control program1, IGBT driver
Logic decision result by software is issuing the signal Fc for removing overcurrent and alerting, fault clearance signal to alarm signal register
Setting can be as shown in Fc in Fig. 3.
The drive software implementation method of IGBT overcurrent monitoring control strategy of the invention, which has the following advantages that, includes:
1, and international traditional 1 overcurrent alarm signal and lock of only issuing at each restriction value excessively is in register
In, other alarm signals are ignored the monitoring method not reported and are compared, and monitoring method of the present invention can reappear IGBT and exist
Full monitoring process during overcurrent, provides a kind of method of real-time monitoring.
2, the control signal processing for the control software that IGBT overcurrent monitoring of the present invention is driven by IGBT is realized, no
The hardware circuit for needing to change IGBT drive circuit provides and a kind of realizes the real-time overcurrent prison of easy, low cost, completely new solution
The method of survey.
3, particularly information is recorded, failure real-time monitoring and data analysis require etc. require clean energy resource grid-connected, soft
Property the equipment such as direct current transportation field, high voltage DC breaker in have very high application value, moreover, IGBT of the invention drive it is real
When overcurrent monitoring circuit, be not driven the limitation of hardware, have wide range of applications.
IGBT of the invention drives over current fault monitoring device embodiment:
The device includes: the module of the measurement voltage between the collector and emitter for real-time monitoring IGBT；For
The fault level where IGBT, the mould of the voltage range of the corresponding setting of corresponding fault level are judged according to measurement voltage
Block；When in a fault level, monitoring that the measurement voltage is in the corresponding voltage range of the fault level every time,
The corresponding overcurrent alarm signal of the fault level is then issued, the module of overcurrent alarm signal twice is at least issued.
Above-mentioned IGBT drives over current fault monitoring device, is actually based on a kind of calculating of corresponding method process of the present invention
Machine solution, i.e., a kind of software architecture, above-mentioned various modules are each treatment progress corresponding with method flow or program.
Since sufficiently clear is complete for the introduction to the above method, therefore no longer the device is described in detail.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a kind of IGBT drives over current fault monitoring method, which comprises the steps of:
1) measurement voltage between the collector and emitter of real-time monitoring IGBT；
2) fault level where IGBT, the voltage zone of the corresponding setting of corresponding fault level are judged according to measurement voltage
Between；
3) in a fault level, when monitoring that the measurement voltage is in the corresponding voltage range of the fault level every time,
The corresponding overcurrent alarm signal of the fault level is then issued, overcurrent alarm signal twice is at least issued.
2. IGBT according to claim 1 drives over current fault monitoring method, which is characterized in that the fault level includes
2 fault levels.
3. IGBT according to claim 1 or 2 drives over current fault monitoring method, which is characterized in that when the actual measurement of monitoring
Voltage then issues not in any one fault level and removes overcurrent alarm signal.
4. a kind of IGBT drives over current fault monitoring device, which is characterized in that including following module:
Module for the measurement voltage between the collector and emitter of real-time monitoring IGBT；
For judging the fault level where IGBT, the voltage zone of the corresponding setting of corresponding fault level according to measurement voltage
Between module；
For in a fault level, monitoring that the measurement voltage is in the corresponding voltage range of the fault level every time
When, then the corresponding overcurrent alarm signal of the fault level is issued, the module of overcurrent alarm signal twice is at least issued.
5. IGBT according to claim 4 drives over current fault monitoring device, which is characterized in that the fault level includes
2 fault levels.
6. IGBT according to claim 4 or 5 drives over current fault monitoring device, which is characterized in that further include for working as
The measurement voltage of monitoring issues the module for removing overcurrent alarm signal not in any one fault level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385456.8A CN108957271B (en) | 2017-05-26 | 2017-05-26 | IGBT driving overcurrent fault monitoring method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385456.8A CN108957271B (en) | 2017-05-26 | 2017-05-26 | IGBT driving overcurrent fault monitoring method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108957271A true CN108957271A (en) | 2018-12-07 |
| CN108957271B CN108957271B (en) | 2021-05-18 |
Family
ID=64494288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710385456.8A Active CN108957271B (en) | 2017-05-26 | 2017-05-26 | IGBT driving overcurrent fault monitoring method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957271B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110852509A (en) * | 2019-11-11 | 2020-02-28 | 北京昊鹏智能技术有限公司 | Fault prediction method and device of IGBT module and storage medium |
| CN111157824A (en) * | 2020-01-06 | 2020-05-15 | 珠海格力电器股份有限公司 | Fault determination device, intelligent power module and fault determination method thereof |
| CN113671930A (en) * | 2021-07-15 | 2021-11-19 | 浙江零跑科技股份有限公司 | Driving fault false detection reset system and method in driving based on feedforward compensation |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215940A (en) * | 1997-10-28 | 1999-05-05 | 北京电力电子新技术研究开发中心 | Device for multi-threshold monitor and multi-slope drive protection of insulation bank tube and its control method |
| CN102082418A (en) * | 2011-01-28 | 2011-06-01 | 中电普瑞科技有限公司 | Method for setting overcurrent protection point for insulated gate bipolar transistor |
| CN102664672A (en) * | 2012-04-20 | 2012-09-12 | 南京矿通科技有限公司 | Bidirectional relay with automatic follow-up faulty cable disconnection and recovery functions and method for controlling bidirectional relay |
| CN102801142A (en) * | 2012-08-29 | 2012-11-28 | 深圳市英威腾电气股份有限公司 | Insulated gate bipolar transistor-driven protective circuit |
| CN102832794A (en) * | 2012-08-22 | 2012-12-19 | 深圳市英威腾电气股份有限公司 | Frequency converter system and fault processing method thereof |
| CN202929163U (en) * | 2012-11-09 | 2013-05-08 | 浙江大学 | IGBT failure detection circuit |
| CN103199832A (en) * | 2012-01-06 | 2013-07-10 | 中国北车股份有限公司大连电力牵引研发中心 | Insulated gate bipolar transistor (IGBT) driving protection circuit and system |
| JP2014127728A (en) * | 2012-12-25 | 2014-07-07 | Nissan Motor Co Ltd | Short circuit fault protection device and short circuit fault protection method |
| CN204068699U (en) * | 2014-09-11 | 2014-12-31 | 华南理工大学 | A kind of MMC submodule with direct-current short circuit fault self-cleaning ability |
| CN204144924U (en) * | 2014-11-17 | 2015-02-04 | 深圳市英威腾电气股份有限公司 | The over current fault protective circuit of a kind of IGBT |
| CN104408549A (en) * | 2014-10-31 | 2015-03-11 | 国家电网公司 | Running state evaluation method of urban distribution network |
| CN204758768U (en) * | 2015-07-06 | 2015-11-11 | 西安科技大学 | IGBT overflows failure detector circuit |
| CN105262468A (en) * | 2015-11-03 | 2016-01-20 | 佛山市南海区联合广东新光源产业创新中心 | IGBT protection and drive circuit |
| CN105929220A (en) * | 2016-04-19 | 2016-09-07 | 南京埃斯顿自动化股份有限公司 | Over-current detection circuit |
| CN106685075A (en) * | 2016-10-28 | 2017-05-17 | 江西电力职业技术学院 | Power supply fault monitoring method and device |
-
2017
- 2017-05-26 CN CN201710385456.8A patent/CN108957271B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215940A (en) * | 1997-10-28 | 1999-05-05 | 北京电力电子新技术研究开发中心 | Device for multi-threshold monitor and multi-slope drive protection of insulation bank tube and its control method |
| CN102082418A (en) * | 2011-01-28 | 2011-06-01 | 中电普瑞科技有限公司 | Method for setting overcurrent protection point for insulated gate bipolar transistor |
| CN103199832A (en) * | 2012-01-06 | 2013-07-10 | 中国北车股份有限公司大连电力牵引研发中心 | Insulated gate bipolar transistor (IGBT) driving protection circuit and system |
| CN102664672A (en) * | 2012-04-20 | 2012-09-12 | 南京矿通科技有限公司 | Bidirectional relay with automatic follow-up faulty cable disconnection and recovery functions and method for controlling bidirectional relay |
| CN102832794A (en) * | 2012-08-22 | 2012-12-19 | 深圳市英威腾电气股份有限公司 | Frequency converter system and fault processing method thereof |
| CN102801142A (en) * | 2012-08-29 | 2012-11-28 | 深圳市英威腾电气股份有限公司 | Insulated gate bipolar transistor-driven protective circuit |
| CN202929163U (en) * | 2012-11-09 | 2013-05-08 | 浙江大学 | IGBT failure detection circuit |
| JP2014127728A (en) * | 2012-12-25 | 2014-07-07 | Nissan Motor Co Ltd | Short circuit fault protection device and short circuit fault protection method |
| CN204068699U (en) * | 2014-09-11 | 2014-12-31 | 华南理工大学 | A kind of MMC submodule with direct-current short circuit fault self-cleaning ability |
| CN104408549A (en) * | 2014-10-31 | 2015-03-11 | 国家电网公司 | Running state evaluation method of urban distribution network |
| CN204144924U (en) * | 2014-11-17 | 2015-02-04 | 深圳市英威腾电气股份有限公司 | The over current fault protective circuit of a kind of IGBT |
| CN204758768U (en) * | 2015-07-06 | 2015-11-11 | 西安科技大学 | IGBT overflows failure detector circuit |
| CN105262468A (en) * | 2015-11-03 | 2016-01-20 | 佛山市南海区联合广东新光源产业创新中心 | IGBT protection and drive circuit |
| CN105929220A (en) * | 2016-04-19 | 2016-09-07 | 南京埃斯顿自动化股份有限公司 | Over-current detection circuit |
| CN106685075A (en) * | 2016-10-28 | 2017-05-17 | 江西电力职业技术学院 | Power supply fault monitoring method and device |
Non-Patent Citations (1)
| Title |
|---|
| 谢舜蒙: "一种具有多重保护功能的新型IGBT驱动器", 《机车电传动》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110852509A (en) * | 2019-11-11 | 2020-02-28 | 北京昊鹏智能技术有限公司 | Fault prediction method and device of IGBT module and storage medium |
| CN111157824A (en) * | 2020-01-06 | 2020-05-15 | 珠海格力电器股份有限公司 | Fault determination device, intelligent power module and fault determination method thereof |
| CN111157824B (en) * | 2020-01-06 | 2021-03-02 | 珠海格力电器股份有限公司 | Fault determination device, intelligent power module and fault determination method thereof |
| CN113671930A (en) * | 2021-07-15 | 2021-11-19 | 浙江零跑科技股份有限公司 | Driving fault false detection reset system and method in driving based on feedforward compensation |
| CN113671930B (en) * | 2021-07-15 | 2022-10-11 | 浙江零跑科技股份有限公司 | Driving fault false detection reset system and method in driving based on feedforward compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108957271B (en) | 2021-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204116544U (en) | A kind of dipulse proving installation for half-bridge IGBT module | |
| CN106556791B (en) | High-power IGBT dynamic test circuit and control method thereof | |
| CN103235219B (en) | A kind of sub-module fault diagnostic method of modularization multi-level converter | |
| CN102571053B (en) | Control method for alternate current solid power switch and switch device | |
| CN104181462B (en) | Measuring circuit for breakover voltage drop of semiconductor switch device | |
| CN105911446B (en) | IGBT ageing states monitoring method and device | |
| CN111781482B (en) | Method and device for detecting health state of bonding wire of high-power SIC MOSFET module | |
| CN108957271A (en) | A kind of IGBT driving over current fault monitoring method and device | |
| CN111371293B (en) | IGBT driving circuit with state monitoring and fault recording functions | |
| CN203932987U (en) | The IGBT short-circuit protection circuit with blanking function | |
| CN103630832B (en) | A kind of power electronic equipment breaker in middle part startup self-detection method and device | |
| CN110470967A (en) | A kind of pulse power AC aging test platform and test method | |
| CN106908677A (en) | Parallel IGBT fault of converter diagnostic method | |
| CN106249069A (en) | IGBT module on-line monitoring method | |
| CN102082418B (en) | Method for setting overcurrent protection point for insulated gate bipolar transistor | |
| CN109270422B (en) | Evaluation method and device of IGBT device | |
| CN109425811A (en) | IGBT detection circuit and detection method | |
| CN105048794A (en) | Insulated Gate Bipolar Transistor (IGBT) driver interlock circuit with power-on time delay function | |
| CN103326323B (en) | Switching power supply protective circuit and method | |
| EP3968519A1 (en) | Large-current mos drive control method | |
| CN102957133B (en) | The IGBT of frequency converter moves back full protective circuit | |
| CN211859931U (en) | IGBT drive circuit with state monitoring and fault recording functions | |
| CN102931643B (en) | Digital control-based IGBT (Insulated Gate Bipolar Transistor) drive protection circuit and protection method thereof | |
| CN104007344B (en) | A kind of New IGBT parallel connection performance test methods | |
| CN206788266U (en) | A kind of damping module test system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |