CN114252752B - Fault diagnosis method for power tube in full-control bridge topology circuit - Google Patents
Fault diagnosis method for power tube in full-control bridge topology circuit Download PDFInfo
- Publication number
- CN114252752B CN114252752B CN202111581881.7A CN202111581881A CN114252752B CN 114252752 B CN114252752 B CN 114252752B CN 202111581881 A CN202111581881 A CN 202111581881A CN 114252752 B CN114252752 B CN 114252752B
- Authority
- CN
- China
- Prior art keywords
- bridge arm
- tube
- bridge
- ref
- power
- 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.)
- Active
Links
Images
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
- G01R31/2621—Circuits therefor for testing field effect transistors, i.e. FET's
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a fault diagnosis method for a power tube in a fully-controlled bridge topology circuit, and belongs to the field of fault diagnosis of power electronics. The fault diagnosis method of the power tube in the fully-controlled bridge topology circuit mainly comprises the following steps: different driving signals are sent to a test switch, an auxiliary switch and a power tube in the circuit, and the actual output voltage of each bridge arm and the current in a direct current bus are detected and recorded; diagnosing the fault states of the upper power tube and the lower power tube of the bridge arm according to the relation between the fault type and the actual output voltage of the bridge arm and the bus current; and carrying out fault diagnosis on the power tubes in other bridge arms of the full-control bridge circuit according to the steps. The power tube fault diagnosis method based on the voltage and current characteristics in the bridge arm circuits under different switching states has the advantages of high fault detection efficiency, high fault positioning precision, safety and reliability.
Description
Technical Field
The invention relates to a fault diagnosis method for a power tube in a full-control bridge topology circuit.
Background
In recent years, with the further popularization and application of fully-controlled bridge circuits, great attention has been paid to the research of bridge circuits, particularly in terms of fault diagnosis of the bridge circuits. Because the power switch devices in the fully-controlled bridge circuit mostly adopt MOSFETs or IGBTs and the like, the power switch devices belong to weak links in a system, and the damage of the power switch devices can cause the whole circuit to work abnormally. Therefore, a method for diagnosing a fault of a power tube is needed, which can quickly detect the fault type of the power tube and quickly locate a fault point, so as to quickly process the fault and improve the reliability of a full-controlled bridge circuit.
Disclosure of Invention
The invention aims to provide a fault diagnosis method for a power tube in a fully-controlled bridge topology circuit, which has the advantages of high fault detection precision, high speed and easiness in implementation.
Sending a disconnection driving signal to a test switch in the test circuit to enable the test resistor to be connected into the circuit;
sending low-level turn-off signals to all auxiliary switches connected with the upper pipe of the bridge arm in parallel;
sending low-level driving signals to all power tubes in the full-bridge circuit;
detecting and recording actual output voltage u of each bridge arm x And the current i in the DC bus dc ；
Sequentially sending different control signals to the power tube of the bridge arm to be tested, and simultaneously detecting and recording the actual output voltage u of the bridge arm x And the current i in the DC bus dc ；
Diagnosing the fault states of upper and lower power tubes of the bridge arm according to the relation between the fault type and the actual output voltage of the bridge arm and the bus current;
if the upper and lower tube faults of the bridge arm are not detected, a high-level closing signal is sent to an auxiliary switch connected with the upper tube of the bridge arm to be detected in parallel;
respectively sending turn-off and turn-on driving signals to a lower tube of the bridge arm to be detected, and simultaneously detecting and recording actual output voltage u of each bridge arm x And the current i in the DC bus dc ；
Thirdly, according to the fault type and the actual output voltage u of the bridge arm x And the current i in the DC bus dc Diagnosing the fault states of the upper power tube and the lower power tube of the bridge arm according to the relation between the bridge arm and the lower power tube;
and carrying out fault diagnosis on the power tubes in other bridge arms of the full-control bridge circuit according to the steps.
Preferably, the power switch tube in the fully-controlled bridge topology circuit is a MOSFET tube or an IGBT tube; the auxiliary switch is a MOSFET tube, or an IGBT tube, or a relay.
Preferably, the test switch is a MOSFET tube, or an IGBT tube, or a relay, or a contactor. Among them, normally closed relays and contactors are preferable.
The invention has the advantages that:
1) In the process of initialization self-checking containing a full-control bridge circuit, the fault type and the fault position of the fault can be rapidly and accurately detected, and the function of early warning can be achieved.
2) Compared with the fault diagnosis method of the power tube in the existing full-control bridge circuit, the principle of the full-control bridge circuit fault detection technology is that the corresponding relation between the fault type of the power tube in the bridge circuit and the output voltage of a bridge arm and the current of a direct current bus is utilized under the condition that an auxiliary switch and the power switch tube are in different switch states. The invention can improve the fault detection precision and efficiency of the power tube in the fully-controlled bridge circuit and shorten the troubleshooting time.
Drawings
The features and advantages of the present invention will become more readily appreciated from the detailed description section provided below with reference to the drawings, in which:
FIG. 1 is a flow chart illustrating a method for diagnosing faults in a fully-controlled bridge circuit according to an embodiment of the present invention;
FIG. 2 is a schematic of a topology of one embodiment of a three-phase full bridge inverter;
fig. 3 is a schematic circuit diagram of a short circuit of an upper tube of a bridge arm of the three-phase full-bridge inverter and a normal lower tube;
FIG. 4 is a schematic circuit diagram of a three-phase full-bridge inverter with short-circuited upper tubes and open-circuited lower tubes on one bridge arm;
FIG. 5 is a schematic circuit diagram of a three-phase full-bridge inverter with normal upper tubes and short-circuited lower tubes on one bridge arm;
FIG. 6 is a schematic circuit diagram of a three-phase full-bridge inverter with normal upper tubes and normal lower tubes on one bridge arm;
FIG. 7 is a schematic circuit diagram of a three-phase full-bridge inverter with normal upper tubes and open lower tubes on one bridge arm;
FIG. 8 is a schematic circuit diagram of a three-phase full-bridge inverter with short-circuited upper tubes and short-circuited lower tubes of one bridge arm;
FIG. 9 is a schematic circuit diagram of a three-phase full-bridge inverter with open tubes on one bridge arm and short tubes on the lower arm;
fig. 10 is a schematic circuit diagram of a three-phase full-bridge inverter when a tube on one bridge arm is open and a tube on the lower bridge arm is normal;
FIG. 11 is a schematic circuit diagram of a three-phase full-bridge inverter with open tubes on one bridge arm and open tubes on the lower arm;
100. a detection circuit; 200. a sampling circuit; 300. a control circuit; 400. a drive circuit; 500. a fully controlled bridge circuit; E. a direct current power supply; c e A flat wave capacitor; r test Testing the resistance; s. the test A test switch; f A And A bridge arm fast fuse; s A1 An upper power tube of the bridge arm A; s A2 The lower power tube of the bridge arm A; s a The auxiliary switch of the bridge arm A; f B B, rapidly fusing the bridge arm; s B1 An upper power tube of the bridge arm B; s B2 A lower power tube of the bridge arm B; s b And an auxiliary switch of the B bridge arm; f C C bridge arm fast fuse; s C1 An upper power tube of the C bridge arm; s C2 A lower power tube of the bridge arm C; s c And an auxiliary switch of the C bridge arm.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention provides a fault diagnosis method of a power tube in a fully-controlled bridge topology circuit, aiming at the problems of difficult fault diagnosis and positioning and low fault diagnosis efficiency of the bridge circuit, wherein the bridge topology comprises at least one bridge arm, and the method comprises the following steps:
s1, sending a disconnection driving signal to a test switch in a test circuit to enable a test resistor to be connected into the circuit;
s2, sending low-level turn-off signals to all auxiliary switches connected with the upper tubes of the bridge arms in parallel;
s3, sending low-level driving signals to all power tubes in the full-bridge circuit;
s4, detecting and recording the actual output voltage u of the detected bridge arm x And the current i in the DC bus dc ；
S5, according to the fault type and the actual output voltage u of the bridge arm x And bus current i dc Diagnosing the fault states of the upper power tube and the lower power tube of the bridge arm according to the relationship between the upper power tube and the lower power tube of the bridge arm; in which, taking the a-bridge arm in the three-phase bridge inverter shown in fig. 2 as an example,
if u is ref -Δu≤u A ≤u ref + Δ u, and i dc =0, continuously sending a driving signal for switching off the upper pipe and switching on the lower pipe to the bridge arm to be tested, and 1) if i is judged to be ref -Δi≤i dc ≤i ref + Δ i, judging that the upper tube of the bridge arm to be tested is short-circuited and the lower tube is normal (see fig. 3); 2) If i is dc If =0, the upper tube of the bridge arm to be tested is judged to be short-circuited, and the lower tube is judged to be open-circuited (see fig. 4);
wherein u is ref The output reference voltage E of the bridge arm to be tested is obtained, and delta u is the maximum range of voltage error; i.e. i ref For parameters on DC bus of tested bridge armTest current E/R test And Δ i is the maximum range of current error.
S6, further, if u A =0, and i dc If u is not less than 0, continuing to send a driving signal for closing the upper tube and opening the lower tube to the bridge arm to be tested ref -Δu≤u A ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref And + delta i, judging that the upper tube of the tested bridge arm is normal and the lower tube is short-circuited (see figure 5).
S7, further, if u A =0, and i dc If u is not less than 0, continuing to send a driving signal for closing the upper tube and opening the lower tube to the bridge arm to be tested ref -Δu≤u A ≤u ref + Δ u, and i dc If the current value is not less than 0, continuing to send a driving signal for closing the upper pipe and closing the lower pipe to the bridge arm to be tested, and 1) if u is not greater than 0 ref -Δu≤u A ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref + Δ i, the upper tube and the lower tube of the tested bridge arm are normal (see fig. 6); 2) If u is ref -Δu≤u A ≤u ref + Δ u, and i dc And if the lower tube is not equal to 0, the upper tube of the tested bridge arm is normal, and the lower tube is open (see fig. 7).
S8, further, if u A =0, and i dc If the drive signal is u, the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is closed, if the drive signal is u, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, and the lower tube is closed A =0, and i dc If =0, then send close signal to auxiliary switch of bridge arm under test, send open signal to lower tube of bridge arm under test, 1) if u A =0, and i dc If =0, the upper tube of the bridge arm is short-circuited and the lower tube is short-circuited (see fig. 8); 2) If u is ref -Δu≤u A ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref + Δ i, the upper tube of the bridge arm under test is open and the lower tube is short (see fig. 9).
S9, further, if u A =0, and i dc If the upper pipe is closed, the lower pipe is disconnected, or the upper pipe is continuously sent to the bridge arm to be detectedClosed, drive signal for lower tube closing, if u A =0, and i dc If u is not less than 0, sending a closing signal to an auxiliary switch of the bridge arm to be tested, sending an opening signal to a lower tube of the bridge arm to be tested, and if u is not less than 0 ref -Δu≤u A ≤u ref + Δ u, and i dc =0, continue to send the drive signal for lower tube closing to the bridge arm under test, 1) if u ref -Δu≤u A ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref + Δ i, the upper tube of the bridge arm to be tested is open, and the lower tube is normal (see fig. 10); 2) If u is ref -Δu≤u A ≤u ref + Δ u, and i dc And =0, the upper tube of the tested bridge arm is open, and the lower tube is open (see fig. 11).
And S10, performing fault diagnosis on the power tubes in other bridge arms of the full-control bridge circuit according to the steps.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A fault diagnosis method for a power tube in a fully-controlled bridge topology circuit, wherein the bridge topology comprises at least one bridge arm, is characterized by comprising the following steps:
sending a disconnection driving signal to a test switch in the test circuit to enable the test resistor to be connected into the circuit; sending low-level turn-off signals to all auxiliary switches connected with the upper pipe of the bridge arm in parallel; sending low-level driving signals to all power tubes in the full-bridge circuit; detecting and recording the actual output voltage u of each bridge arm x And the current i in the DC bus dc (ii) a Sequentially sending different control signals to the power tube of the bridge arm to be tested, and simultaneously detecting and recording the actual output voltage u of the bridge arm x And the current i in the DC bus dc (ii) a Diagnosing the fault states of the upper power tube and the lower power tube of the bridge arm according to the relation between the fault type and the actual output voltage of the bridge arm and the bus current; if the upper and lower tube faults of the bridge arm are not detected, a high-level closing signal is sent to an auxiliary switch connected with the upper tube of the bridge arm to be detected in parallel; respectively sending turn-off and turn-on driving signals to a lower tube of the bridge arm to be detected, and simultaneously detecting and recording actual output voltage u of each bridge arm x And the current i in the DC bus dc (ii) a Thirdly, according to the fault type and the actual output voltage u of the bridge arm x And the current i in the DC bus dc Diagnosing the fault states of the upper power tube and the lower power tube of the bridge arm according to the relationship between the upper power tube and the lower power tube of the bridge arm; carrying out fault diagnosis on power tubes in other bridge arms of the full-control bridge circuit according to the steps;
in order to facilitate the description of the fault diagnosis method of the power tube in the fully-controlled bridge topology circuit, further, u is defined ref The reference voltage is output by the bridge arm to be measured, and delta u is the maximum range of voltage error; i all right angle ref The reference current is the reference current on the direct current bus of the bridge arm to be measured, and delta i is the maximum range of the current error;
the direct current power supply is connected with the flat wave capacitor in parallel, the test switch is connected with the negative electrode of the direct current power supply and the negative electrode of the direct current bus of the full-control bridge circuit, one end of the test switch is connected with the negative electrode of the direct current power supply, and the other end of the test switch is connected with the negative electrode end of the direct current bus of each bridge arm; the test resistor is connected with the test switch in parallel;
the fast fuse wire is connected with the upper pipe of the bridge arm and the positive pole of the direct current bus, and the auxiliary switch is connected with the upper pipe of the bridge arm in parallel.
2. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, comprising:
the auxiliary switch in the full-control bridge circuit is turned off, and low-level turn-off signals are sent to all power tubes in the full-bridge circuit: if u is ref -Δu≤u x ≤u ref + Δ u, and i dc If the current is not less than 0, continuing to send a driving signal for switching off the upper tube and closing the lower tube to the bridge arm to be tested, and 1) if the current is i ref -Δi≤i dc ≤i ref + delta i, judging that the upper tube of the bridge arm to be tested is short-circuited, and the lower tube is normal; 2) If i is dc And =0, the upper tube of the bridge arm to be tested is judged to be short-circuited, and the lower tube is opened.
3. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, comprising:
the auxiliary switch in the full-control bridge circuit is turned off, and low-level turn-off signals are sent to all power tubes in the full-bridge circuit: if u is x =0, and i dc If u is not less than 0, continuing to send a driving signal for closing the upper tube and opening the lower tube to the bridge arm to be tested ref -Δu≤u x ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref And + delta i, judging that the upper pipe of the bridge arm to be detected is normal and the lower pipe is short-circuited.
4. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, comprising:
the auxiliary switch in the full-control bridge circuit is turned off, and low-level turn-off signals are sent to all power tubes in the full-bridge circuit: if u is x =0, and i dc If =0, continuously sending a driving signal for closing the upper pipe and opening the lower pipe to the bridge arm to be tested, and if u is not greater than 0 ref -Δu≤u x ≤u ref + Δ u, and i dc If the current value is not less than 0, continuing to send a driving signal for closing the upper pipe and closing the lower pipe to the bridge arm to be tested, and 1) if u is not greater than 0 ref -Δu≤u x ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref + delta i, the upper pipe and the lower pipe of the bridge arm to be measured are normal; 2) If u is ref -Δu≤u x ≤u ref + Δ u, and i dc And if the lower tube is not connected with the upper tube, the upper tube of the tested bridge arm is normal, and the lower tube is open.
5. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, comprising the following steps:
the auxiliary switch in the full-control bridge circuit is turned off, and low-level turn-off signals are sent to all power tubes in the full-bridge circuit: if u is x =0, and i dc If the drive signal is u, the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is closed, if the drive signal is u, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, and the lower tube is closed x =0, and i dc If =0, then send close signal to auxiliary switch of bridge arm under test, send open signal to lower tube of bridge arm under test, 1) if u x =0, and i dc If =0, the upper tube of the bridge arm is short-circuited and the lower tube is short-circuited; 2) If u is ref -Δu≤u x ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref And + delta i, the upper tube of the bridge arm to be tested is open, and the lower tube is short-circuited.
6. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, comprising the following steps:
the auxiliary switch in the full-control bridge circuit is turned off, and low-level turn-off signals are sent to all power tubes in the full-bridge circuit: if u is x =0, and i dc If the drive signal is u, the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, the upper tube is closed, the lower tube is closed, if the drive signal is u, the upper tube is closed, the lower tube is opened, or the drive signal is sent to the bridge arm to be tested, and the lower tube is closed x =0, and i dc If =0, sending a closing signal to an auxiliary switch of the bridge arm to be tested, sending an opening signal to a lower tube of the bridge arm to be tested, and if u is not greater than 0 ref -Δu≤u x ≤u ref + Δ u, and i dc If the current value is not less than 0, continuing to send a driving signal for closing the lower pipe to the bridge arm to be tested, and 1) if u is not greater than 0 ref -Δu≤u x ≤u ref + Δ u, and i ref -Δi≤i dc ≤i ref + delta i, the upper pipe of the bridge arm to be tested is opened, and the lower pipe is normal; 2) If u is ref -Δu≤u x ≤u ref + Δ u, and i dc And if the lower tube is not connected with the upper tube, the upper tube of the tested bridge arm is connected with the lower tube.
7. The method for diagnosing the faults of the power tube in the full-controlled bridge topology circuit according to claim 1, wherein the power switch tube is a MOSFET tube or an IGBT tube.
8. The method for diagnosing the faults of the power tubes in the full-controlled bridge topology circuit according to claim 1, wherein the auxiliary switches are MOSFET tubes, IGBT tubes or relays.
9. The method for diagnosing the faults of the power tubes in the full-controlled bridge topology circuit according to claim 1, wherein the test switches are MOSFET tubes, IGBT tubes, relays or contactors.
10. The method for diagnosing the faults of the power tubes in the fully-controlled bridge topology circuit according to claim 1, wherein when the tubes on the bridge arm are all short-circuited in operation, the fast fusible link is fused, so that the short-circuit fault of the bridge arm is converted into the open-circuit fault of the bridge arm.
11. The method for diagnosing the fault of the power tube in the fully-controlled bridge topology circuit according to claim 1, wherein a test resistor is used as a load during the detection of the bridge arm fault to limit the current amplitude in a test loop and also used as a bleeder resistor of a bus capacitor.
12. The method of claim 1, wherein the fully-controlled bridge topology circuit includes but is not limited to a single-phase bridge converter circuit, a two-phase bridge converter circuit, a three-phase bridge converter circuit, and a multi-phase bridge converter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581881.7A CN114252752B (en) | 2021-12-22 | 2021-12-22 | Fault diagnosis method for power tube in full-control bridge topology circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581881.7A CN114252752B (en) | 2021-12-22 | 2021-12-22 | Fault diagnosis method for power tube in full-control bridge topology circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114252752A CN114252752A (en) | 2022-03-29 |
| CN114252752B true CN114252752B (en) | 2022-12-16 |
Family
ID=80794314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111581881.7A Active CN114252752B (en) | 2021-12-22 | 2021-12-22 | Fault diagnosis method for power tube in full-control bridge topology circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114252752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166407A (en) * | 2022-09-06 | 2022-10-11 | 广东汇芯半导体有限公司 | Test circuit and tester applying same |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1135716A (en) * | 1966-03-04 | 1968-12-04 | Siemens Ag | Improvements in or relating to fault location systems in telecommunications transmission systems |
| EP1420262A1 (en) * | 2002-11-12 | 2004-05-19 | Alstom | Method and system for detecting at least one failure of at least one switch |
| JP2006042563A (en) * | 2004-07-30 | 2006-02-09 | Tokyo Electric Power Co Inc:The | Power switching circuit, power converter, open circuit failure detecting method, and driving method of semiconductor switching device |
| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| CN102035401A (en) * | 2010-12-30 | 2011-04-27 | 中国科学院等离子体物理研究所 | Fully-controlled bridge topology structure for medium and high voltage motor drive |
| JP2013181822A (en) * | 2012-03-01 | 2013-09-12 | Gs Yuasa Corp | Switch fault diagnostic device, battery pack and switch faut diagnosis program, and switch fault diagnostic method |
| CN103744013A (en) * | 2014-01-21 | 2014-04-23 | 上海新世纪机器人有限公司 | Full control bridge circuit fault diagnosis method |
| CN104901524A (en) * | 2015-05-26 | 2015-09-09 | 清华大学 | DC bipolar short-circuit fault crossing method for modular multilevel converter |
| KR20150118730A (en) * | 2014-04-15 | 2015-10-23 | 엘에스산전 주식회사 | Fault detection circuit of inverter |
| WO2015188673A1 (en) * | 2014-06-12 | 2015-12-17 | 国家电网公司 | Modular multi-level flexible direct-current topology circuit suitable for fault ride-through |
| CN106468752A (en) * | 2016-09-27 | 2017-03-01 | 武汉大学 | A kind of solid circuit breaker RCD buffer circuit being integrated with fault location function and trouble point checking method |
| CN107478957A (en) * | 2017-09-06 | 2017-12-15 | 特变电工新疆新能源股份有限公司 | Full-bridge modules topology and test method for the experiment of direct current transportation fault current |
| CN107656184A (en) * | 2017-09-01 | 2018-02-02 | 东南大学 | A kind of switching tube method for diagnosing faults of NPC three-level current transformers |
| CN108414873A (en) * | 2018-03-05 | 2018-08-17 | 南京婆娑航空科技有限公司 | A kind of three-phase inverter power device open fault detection method |
| CN108802557A (en) * | 2018-06-28 | 2018-11-13 | 安徽康能电气有限公司 | A kind of fault locator based on disturbing signal |
| CN110441643A (en) * | 2019-08-07 | 2019-11-12 | 北京航空航天大学 | Inverter power pipe open circuit fault diagnostic method in control system for permanent-magnet synchronous motor |
| CN111555650A (en) * | 2020-04-15 | 2020-08-18 | 中国地质大学（武汉） | Experimental device for two-level inverter switch tube fault simulation |
| KR20200112096A (en) * | 2019-03-20 | 2020-10-05 | 현대모비스 주식회사 | Method and apparatus for real-time failure diagnosis of power semiconductor module |
| CN113107975A (en) * | 2021-04-07 | 2021-07-13 | 华中科技大学 | Open circuit fault locating and fault tolerance method and system for winding controller of magnetic bearing |
| CN113447853A (en) * | 2021-06-10 | 2021-09-28 | 南京航空航天大学 | Open-circuit fault diagnosis method for double-salient electro-magnetic pole power converter |
| CN113489344A (en) * | 2021-07-04 | 2021-10-08 | 西北工业大学 | Space power supply push-pull circuit and switching tube fault diagnosis and fault tolerance method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7791847B2 (en) * | 2007-12-28 | 2010-09-07 | Delta Electronics, Inc. | Fault-sensing and protecting apparatus for soft start circuit of inverter and method for the same |
| JP5369608B2 (en) * | 2008-10-23 | 2013-12-18 | 富士電機株式会社 | Uninterruptible power supply and selective cut-off method for uninterruptible power supply |
| CN101403780B (en) * | 2008-11-13 | 2011-06-01 | 中国电力科学研究院 | Laboratory test device and method for dynamic electric voltage recovery device |
| CN106357144B (en) * | 2016-09-12 | 2019-01-25 | 东南大学 | A kind of twin inverter topological structure opens fault of converter diagnosis and fault tolerant control method in winding electric machine drive system |
| JP2020098140A (en) * | 2018-12-18 | 2020-06-25 | 矢崎総業株式会社 | Switch fault detection device |
| EP3866325A1 (en) * | 2020-02-12 | 2021-08-18 | GE Energy Power Conversion Technology Ltd. | Method of short-circuiting a faulty converter submodule and power converter supporting same |
| CN112230080B (en) * | 2020-09-17 | 2023-06-13 | 北京自动化控制设备研究所 | Three-phase full-bridge inverter fault detection method |
-
2021
- 2021-12-22 CN CN202111581881.7A patent/CN114252752B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1135716A (en) * | 1966-03-04 | 1968-12-04 | Siemens Ag | Improvements in or relating to fault location systems in telecommunications transmission systems |
| EP1420262A1 (en) * | 2002-11-12 | 2004-05-19 | Alstom | Method and system for detecting at least one failure of at least one switch |
| JP2006042563A (en) * | 2004-07-30 | 2006-02-09 | Tokyo Electric Power Co Inc:The | Power switching circuit, power converter, open circuit failure detecting method, and driving method of semiconductor switching device |
| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| CN102035401A (en) * | 2010-12-30 | 2011-04-27 | 中国科学院等离子体物理研究所 | Fully-controlled bridge topology structure for medium and high voltage motor drive |
| JP2013181822A (en) * | 2012-03-01 | 2013-09-12 | Gs Yuasa Corp | Switch fault diagnostic device, battery pack and switch faut diagnosis program, and switch fault diagnostic method |
| CN103744013A (en) * | 2014-01-21 | 2014-04-23 | 上海新世纪机器人有限公司 | Full control bridge circuit fault diagnosis method |
| KR20150118730A (en) * | 2014-04-15 | 2015-10-23 | 엘에스산전 주식회사 | Fault detection circuit of inverter |
| WO2015188673A1 (en) * | 2014-06-12 | 2015-12-17 | 国家电网公司 | Modular multi-level flexible direct-current topology circuit suitable for fault ride-through |
| CN104901524A (en) * | 2015-05-26 | 2015-09-09 | 清华大学 | DC bipolar short-circuit fault crossing method for modular multilevel converter |
| CN106468752A (en) * | 2016-09-27 | 2017-03-01 | 武汉大学 | A kind of solid circuit breaker RCD buffer circuit being integrated with fault location function and trouble point checking method |
| CN107656184A (en) * | 2017-09-01 | 2018-02-02 | 东南大学 | A kind of switching tube method for diagnosing faults of NPC three-level current transformers |
| CN107478957A (en) * | 2017-09-06 | 2017-12-15 | 特变电工新疆新能源股份有限公司 | Full-bridge modules topology and test method for the experiment of direct current transportation fault current |
| CN108414873A (en) * | 2018-03-05 | 2018-08-17 | 南京婆娑航空科技有限公司 | A kind of three-phase inverter power device open fault detection method |
| CN108802557A (en) * | 2018-06-28 | 2018-11-13 | 安徽康能电气有限公司 | A kind of fault locator based on disturbing signal |
| KR20200112096A (en) * | 2019-03-20 | 2020-10-05 | 현대모비스 주식회사 | Method and apparatus for real-time failure diagnosis of power semiconductor module |
| CN110441643A (en) * | 2019-08-07 | 2019-11-12 | 北京航空航天大学 | Inverter power pipe open circuit fault diagnostic method in control system for permanent-magnet synchronous motor |
| CN111555650A (en) * | 2020-04-15 | 2020-08-18 | 中国地质大学（武汉） | Experimental device for two-level inverter switch tube fault simulation |
| CN113107975A (en) * | 2021-04-07 | 2021-07-13 | 华中科技大学 | Open circuit fault locating and fault tolerance method and system for winding controller of magnetic bearing |
| CN113447853A (en) * | 2021-06-10 | 2021-09-28 | 南京航空航天大学 | Open-circuit fault diagnosis method for double-salient electro-magnetic pole power converter |
| CN113489344A (en) * | 2021-07-04 | 2021-10-08 | 西北工业大学 | Space power supply push-pull circuit and switching tube fault diagnosis and fault tolerance method |
Non-Patent Citations (9)
| Title |
|---|
| Continuous operation of LVDC source/load under DC faults in MMC-DC distribution systems;Bin Li等;《Electric PowerSystemsResearch》;20210223;全文 * |
| Open switch fault diagnosis of cascade H-bridge multi-level inverter in distributed power generators by machine learning algorithms;Murad Ali等;《Energy Reports》;20211203;全文 * |
| Robust fault diagnosis for DC–DC Boost converters via switched systems;Qingyu Su;《Control Engineering Practice》;20210510;全文 * |
| 三相开环Z源逆变器短路故障诊断研究;王梓航等;《计算技术与自动化》;20180630;全文 * |
| 三相逆变器功率管故障智能诊断研究;刘艳等;《电测与仪表》;20130131;全文 * |
| 光伏三电平逆变器故障检测和诊断技术研究进展;万晓凤等;《电子测量与仪器学报》;20151231;全文 * |
| 基于上下续电流的功率变换器故障诊断方法;刘勇智等;《电机与控制学报》;20171130;全文 * |
| 基于中点电压信号分析的逆变器功率管开路故障诊断研究;郭立炜等;《河北科技大学学报》;20150228;全文 * |
| 基于续电流的功率变换器故障诊断方案;刘勇智等;《空军工程大学学报》;20160630;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114252752A (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111596160B (en) | MMC converter valve submodule online monitoring method and system | |
| JP5201245B2 (en) | Rotating machine control device | |
| CN104298221B (en) | Three phase full bridge on-off circuit fault detection method and device | |
| CN103069530B (en) | The DC load cut-off catalyst of quasiconductor auxiliary | |
| CN111077471B (en) | NPC three-level inverter open-circuit fault diagnosis method based on instantaneous frequency | |
| CN110806548A (en) | Fault detection circuit and method for motor inverter | |
| CN109061431A (en) | A kind of SiC MOSFET grid fault diagnosis system and diagnostic method based on gate charge | |
| CN111624514A (en) | Method for diagnosing short-circuit and open-circuit faults of switching tube of three-level rectifier | |
| CN114252752B (en) | Fault diagnosis method for power tube in full-control bridge topology circuit | |
| US11909353B2 (en) | Ground-fault detecting device and related method | |
| CN106053954B (en) | Dc-link capacitance on-line monitoring method | |
| CN208714975U (en) | Electric vehicle pre-charging control circuit | |
| CN109188266A (en) | A kind of detection circuit and its detection method that high voltage negative relay is adhered | |
| CN110146770A (en) | A kind of motor insulation and short-circuit recognition method for frequency converter | |
| CN105186460A (en) | Overcurrent quick latching protection method suitable for modularized multi-level converter valve | |
| KR101091636B1 (en) | Power cable short detection method of motor | |
| CN114859205B (en) | Motor driver inverter bridge online diagnosis system and method | |
| CN107024653A (en) | The on-line measuring device and method of a kind of high voltage DC breaker | |
| CN112114219A (en) | Fault diagnosis method for suspension chopper of magnetic suspension train | |
| CN104843553A (en) | Elevator inverter fault detection method and system | |
| CN201255763Y (en) | Electric bicycle failure automatic detection and display apparatus and electric bicycle | |
| CN110474303B (en) | Mechanical high-voltage direct-current circuit breaker with flexible breaking capacity | |
| CN211684756U (en) | High-voltage power distribution system of electric vehicle and electric vehicle | |
| CN2672846Y (en) | Detector for fuse or switch state | |
| CN113721085A (en) | Submodule testing device 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |