CN202111464U - Inverter leg interlocking protection circuit - Google Patents
Inverter leg interlocking protection circuit Download PDFInfo
- Publication number
- CN202111464U CN202111464U CN2011202259243U CN201120225924U CN202111464U CN 202111464 U CN202111464 U CN 202111464U CN 2011202259243 U CN2011202259243 U CN 2011202259243U CN 201120225924 U CN201120225924 U CN 201120225924U CN 202111464 U CN202111464 U CN 202111464U
- Authority
- CN
- China
- Prior art keywords
- resistance
- photoelectrical coupler
- emitting diode
- input side
- connection
- 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.)
- Expired - Lifetime
Links
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model provides an inverter leg interlocking protection circuit. One end of a resistance R1 is respectively in connection with one end of a resistance R2 and a positive electrode of a light emitting diode on an input side of an optoelectronic coupler 01; a collector electrode of an photosensitive triode on an output side of the optoelectronic coupler 01 is in connection with a VCC (Volt Current Condenser), and an emitting electrode of the triode on the output side of the optoelectronic coupler 01 is respectively in connection with an end of a resistance R3 and an end of a resistance R4. One end of a resistance R5 is respectively in connection with an end of a resistance R6 and the positive electrode of the light emitting diode on an input side of an optoelectronic coupler 02; a collector electrode of an photosensitive triode on an output side of the optoelectronic coupler 02 is in connection with a VCC, and an emitting electrode of the triode on the output side of the optoelectronic coupler 02 is respectively in connection with an end of a resistance R7 and an end of a resistance R8. According to the leg interlocking protection circuit, driving signals of two IGBTs (Insulated Gate Bipolar Translator) on a same leg can be interlocked to be mutually restricted with each other; and only when driving signals of one circuit are ensured to be turned off, the driving signals of the other circuit can be conducted such that the IGBTs can be strictly avoided from damage caused by overcurrent caused by the short circuit of the legs.
Description
Technical field
The utility model relates to a kind of inverter brachium pontis interlock protection circuit, belongs to the protective circuit technical field.
Background technology
The research of power transistor inverter received widely and to pay attention to recent years, but a difficult problem that often the runs into impaired phenomenon that is power transistor.For solving this difficult problem, people have done number of research projects to the drive protecting of power transistor.This is that the design of protective circuit more affects the reliability and the useful life of system because the base drive mode of power tube directly affects its operating state.As everyone knows, that inverter is in operation is fast because of switching speed, work under bad environment, be subject to factor affecting such as various electromagnetic interference, and it is overlapping that drive signal is slipped up easily, and overlapping grade is prone to cause the IGBT pipe to damage because drive control signal is slipped up.
The utility model content
The purpose of the utility model be for solve inverter be in operation, work under bad environment fast because of switching speed, be subject to factor affecting such as various electromagnetic interference; Drive signal error easily is overlapping; Overlapping grade is prone to cause the problem of IGBT pipe damage because drive control signal is slipped up, and then a kind of inverter brachium pontis interlock protection circuit is provided.
The purpose of the utility model realizes through following technical scheme:
The utility model comprises: go up bridge Drive and Control Circuit and following bridge Drive and Control Circuit; The said bridge Drive and Control Circuit that goes up comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4 and photoelectrical coupler 01; Said resistance R 2 is connected in parallel with the light-emitting diode of photoelectrical coupler 01 input side; One end of said resistance R 1 is connected with an end of resistance R 2 and the positive pole of photoelectrical coupler 01 input side light-emitting diode respectively; The collector electrode of photoelectrical coupler 01 outlet side phototriode meets VCC, and the emitter of photoelectrical coupler 01 outlet side phototriode is connected the other end ground connection of resistance R 3 with an end of resistance R 3 and an end of resistance R 4 respectively; Said bridge Drive and Control Circuit down comprises resistance R 5, resistance R 6, resistance R 7, resistance R 8 and photoelectrical coupler 02; Said resistance R 6 is connected in parallel with the light-emitting diode of photoelectrical coupler 02 input side; One end of said resistance R 5 is connected with an end of resistance R 6 and the positive pole of photoelectrical coupler 02 input side light-emitting diode respectively; The collector electrode of photoelectrical coupler 02 outlet side phototriode meets VCC; The emitter of photoelectrical coupler 02 outlet side phototriode is connected the other end ground connection of resistance R 7 with an end of resistance R 7 and an end of resistance R 8 respectively; The other end of resistance R 1 is connected with an end of resistance R 6 and the negative pole of photoelectrical coupler 02 input side light-emitting diode respectively, and the other end of resistance R 5 is connected with an end of resistance R 2 and the negative pole of photoelectrical coupler 01 input side light-emitting diode respectively.
The utility model can draw through experimental result: the brachium pontis interlock circuit; Drive signal to two IGBT pipes on the same brachium pontis is carried out interlocking; Make its mutual restriction; Only close and have no progeny in affirmation one tunnel drive signal, another road signal ability conducting, the strict like this IGBT that prevents damages because of the brachium pontis short circuit causes overcurrent.This protective circuit dynamic response is fast, relies on reliable interlocking, can effectively prevent the straight-through phenomenon of short circuit of main bridge circuit, has improved the reliability of system.
Description of drawings
Fig. 1 is the structural representation of a kind of inverter brachium pontis interlock protection circuit of providing of the utility model execution mode.
Among the figure, A and B: the same brachium pontis of inverter is bridge drive controlling input signal up and down; A1 and B1: the same brachium pontis of inverter is bridge drive controlling output signal up and down.
Embodiment
To combine accompanying drawing that the utility model is done further detailed description below: present embodiment provided detailed execution mode, but the protection range of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.
As shown in Figure 1; A kind of inverter brachium pontis interlock protection circuit that present embodiment is related; Comprise: go up bridge Drive and Control Circuit and following bridge Drive and Control Circuit; The said bridge Drive and Control Circuit that goes up comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4 and photoelectrical coupler 01, and said resistance R 2 is connected in parallel with the light-emitting diode of photoelectrical coupler 01 input side, and an end of said resistance R 1 is connected with an end of resistance R 2 and the positive pole of photoelectrical coupler 01 input side light-emitting diode respectively; The collector electrode of photoelectrical coupler 01 outlet side phototriode meets VCC; The emitter of photoelectrical coupler 01 outlet side phototriode is connected with an end of resistance R 3 and an end of resistance R 4 respectively, the other end ground connection of resistance R 3, and the other end of resistance R 4 is used for bridge drive controlling output signal; Said bridge Drive and Control Circuit down comprises resistance R 5, resistance R 6, resistance R 7, resistance R 8 and photoelectrical coupler 02; Said resistance R 6 is connected in parallel with the light-emitting diode of photoelectrical coupler 02 input side; One end of said resistance R 5 is connected with an end of resistance R 6 and the positive pole of photoelectrical coupler 02 input side light-emitting diode respectively; The collector electrode of photoelectrical coupler 02 outlet side phototriode meets VCC; The emitter of photoelectrical coupler 02 outlet side phototriode is connected with an end of resistance R 7 and an end of resistance R 8 respectively, the other end ground connection of resistance R 7, and the other end of resistance R 8 is used for bridge drive controlling output signal down; The other end of resistance R 1 is connected with an end of resistance R 6, the negative pole and time bridge drive controlling input signal end B of photoelectrical coupler 02 input side light-emitting diode respectively, and the other end of resistance R 5 is connected with an end of resistance R 2, the negative pole and the last bridge drive controlling input signal end A of photoelectrical coupler 01 input side light-emitting diode respectively.
In bridge inverter main circuit, with two IGBT pipe conductings simultaneously under any circumstance of arm branch road, for realizing this purpose; Generally can be employed in and Dead Time is set in the drive signal controls; Be the time-delay of time t, but t is too little, less than the delay time of IGBT pipe itself; Then can cause the short circuit on the brachium pontis, so that damage IGBT.And t is too big, can influence the dynamic characteristic of inverter again.Therefore the brachium pontis interlock circuit is set on the original basis; Drive signal to two IGBT pipes on the same brachium pontis is carried out interlocking; Make its mutual restriction; Only close and have no progeny in affirmation one tunnel drive signal, another road signal ability conducting, the strict like this IGBT that prevents damages because of the brachium pontis short circuit causes overcurrent.
The operation principle of the utility model: brachium pontis A end: (1): at this moment, if B also be a low level, then photoelectrical coupler 01 two ends do not have pressure reduction when opening signal (A is a low level) when the A brachium pontis obtains one, 01 not conducting, and the A1 end does not have to be opened signal and exports.If B is high level, 1. put current potential and be higher than and 2. put current potential at photoelectrical coupler 01 place, 01 conducting, and a-signal is passed to optocoupler time A1 place, limit, drives IGBT and manages.(2): when A was high level, no matter B was high level or low level, and photoelectrical coupler 01 all can not conducting, and then the A1 place does not have and opens signal output.Brachium pontis B end: principle is equal to brachium pontis A end.The logical interlock circuit is represented with truth table:
| A | B | 01 | 02 | A1 | B1 |
| 0 | 0 | Not conducting | Not conducting | 0 | 0 |
| 0 | 1 | Conducting | Not conducting | 1 | 0 |
| 1 | 0 | Not conducting | Conducting | 0 | 1 |
| 1 | 1 | Not conducting | Not conducting | 0 | 0 |
The above; Be merely the preferable embodiment of the utility model; These embodiments all are based on the different implementations under the utility model general idea, and the protection range of the utility model is not limited thereto, and any technical staff who is familiar with the present technique field is in the technical scope that the utility model discloses; The variation that can expect easily or replacement all should be encompassed within the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with the protection range of claims.
Claims (1)
1. inverter brachium pontis interlock protection circuit; Comprise: go up bridge Drive and Control Circuit and following bridge Drive and Control Circuit; It is characterized in that; The said bridge Drive and Control Circuit that goes up comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4 and photoelectrical coupler 01; Said resistance R 2 is connected in parallel with the light-emitting diode of photoelectrical coupler 01 input side, and an end of said resistance R 1 is connected with an end of resistance R 2 and the positive pole of photoelectrical coupler 01 input side light-emitting diode respectively, and the collector electrode of photoelectrical coupler 01 outlet side phototriode meets VCC; The emitter of photoelectrical coupler 01 outlet side phototriode is connected the other end ground connection of resistance R 3 with an end of resistance R 3 and an end of resistance R 4 respectively; Said bridge Drive and Control Circuit down comprises resistance R 5, resistance R 6, resistance R 7, resistance R 8 and photoelectrical coupler 02; Said resistance R 6 is connected in parallel with the light-emitting diode of photoelectrical coupler 02 input side; One end of said resistance R 5 is connected with an end of resistance R 6 and the positive pole of photoelectrical coupler 02 input side light-emitting diode respectively; The collector electrode of photoelectrical coupler 02 outlet side phototriode meets VCC; The emitter of photoelectrical coupler 02 outlet side phototriode is connected the other end ground connection of resistance R 7 with an end of resistance R 7 and an end of resistance R 8 respectively; The other end of resistance R 1 is connected with an end of resistance R 6 and the negative pole of photoelectrical coupler 02 input side light-emitting diode respectively, and the other end of resistance R 5 is connected with an end of resistance R 2 and the negative pole of photoelectrical coupler 01 input side light-emitting diode respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202259243U CN202111464U (en) | 2011-06-29 | 2011-06-29 | Inverter leg interlocking protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202259243U CN202111464U (en) | 2011-06-29 | 2011-06-29 | Inverter leg interlocking protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111464U true CN202111464U (en) | 2012-01-11 |
Family
ID=45436913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202259243U Expired - Lifetime CN202111464U (en) | 2011-06-29 | 2011-06-29 | Inverter leg interlocking protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111464U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684671A (en) * | 2012-05-04 | 2012-09-19 | 锦州海伯伦汽车电子有限公司 | Driving protection circuit for preventing simultaneous connection of MOSFETs (metal oxide semiconductor field effect transistors) |
| CN102904423A (en) * | 2012-11-12 | 2013-01-30 | 重庆长安汽车股份有限公司 | Pre-driving circuit and power module driver |
| CN103595238A (en) * | 2013-09-29 | 2014-02-19 | 深圳市伟创电气有限公司 | Low-power IGBT (insulated gate bipolar transistor) driving interlocking circuit |
| WO2014056393A1 (en) * | 2012-10-12 | 2014-04-17 | 广东易事特电源股份有限公司 | Drive interlocking circuit preventing direct connection of bridge arms |
| CN104579261A (en) * | 2014-12-31 | 2015-04-29 | 深圳市航盛电子股份有限公司 | PWM signal isolation interlocking and drive amplifying circuit and motor controller |
| CN105375750A (en) * | 2015-12-17 | 2016-03-02 | 南京工程学院 | Driving protection circuit for preventing bridge arm direct connection |
| CN106452044A (en) * | 2016-11-22 | 2017-02-22 | 成都麦隆电气有限公司 | Signal interlock circuit for preventing short circuit of APF (active power filter) driving circuits |
| CN105743337B (en) * | 2016-04-26 | 2018-04-17 | 湖南利能科技股份有限公司 | IGBT drive signal interlock circuits |
| CN108233903A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of airborne high-voltage frequency converter IGBT anti-interference driving circuits |
| CN109787457A (en) * | 2019-02-26 | 2019-05-21 | 浙江禾川科技股份有限公司 | A kind of inverter driving circuit |
| CN111313877A (en) * | 2020-03-11 | 2020-06-19 | 苏州思道尔新能源科技有限公司 | Driving and protecting shunt excitation coil circuit |
-
2011
- 2011-06-29 CN CN2011202259243U patent/CN202111464U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684671A (en) * | 2012-05-04 | 2012-09-19 | 锦州海伯伦汽车电子有限公司 | Driving protection circuit for preventing simultaneous connection of MOSFETs (metal oxide semiconductor field effect transistors) |
| CN102684671B (en) * | 2012-05-04 | 2014-09-10 | 锦州海伯伦汽车电子有限公司 | Driving protection circuit for preventing simultaneous connection of MOSFETs (metal oxide semiconductor field effect transistors) |
| WO2014056393A1 (en) * | 2012-10-12 | 2014-04-17 | 广东易事特电源股份有限公司 | Drive interlocking circuit preventing direct connection of bridge arms |
| CN102904423A (en) * | 2012-11-12 | 2013-01-30 | 重庆长安汽车股份有限公司 | Pre-driving circuit and power module driver |
| CN103595238A (en) * | 2013-09-29 | 2014-02-19 | 深圳市伟创电气有限公司 | Low-power IGBT (insulated gate bipolar transistor) driving interlocking circuit |
| CN104579261A (en) * | 2014-12-31 | 2015-04-29 | 深圳市航盛电子股份有限公司 | PWM signal isolation interlocking and drive amplifying circuit and motor controller |
| CN105375750A (en) * | 2015-12-17 | 2016-03-02 | 南京工程学院 | Driving protection circuit for preventing bridge arm direct connection |
| CN105743337B (en) * | 2016-04-26 | 2018-04-17 | 湖南利能科技股份有限公司 | IGBT drive signal interlock circuits |
| CN106452044A (en) * | 2016-11-22 | 2017-02-22 | 成都麦隆电气有限公司 | Signal interlock circuit for preventing short circuit of APF (active power filter) driving circuits |
| CN108233903A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of airborne high-voltage frequency converter IGBT anti-interference driving circuits |
| CN109787457A (en) * | 2019-02-26 | 2019-05-21 | 浙江禾川科技股份有限公司 | A kind of inverter driving circuit |
| CN111313877A (en) * | 2020-03-11 | 2020-06-19 | 苏州思道尔新能源科技有限公司 | Driving and protecting shunt excitation coil circuit |
| CN111313877B (en) * | 2020-03-11 | 2023-06-09 | 苏州思道尔新能源科技有限公司 | Driving and protecting shunt coil circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202111464U (en) | Inverter leg interlocking protection circuit | |
| CN203352423U (en) | Switching tube driving amplifying circuit for switching power supply | |
| CN206790353U (en) | Isolation transformer driving circuit | |
| CN104883038A (en) | Half-bridge circuit employing negative voltage to turn off half-bridge circuit driver, and method | |
| CN206332447U (en) | Direct current inputs anti-surge voltage circuit | |
| CN201975986U (en) | Full-bridge drive circuit of square wave inverter | |
| CN202282730U (en) | Upper and lower bridge interlocking circuit in two-level inverter | |
| CN105375750A (en) | Driving protection circuit for preventing bridge arm direct connection | |
| CN103595238A (en) | Low-power IGBT (insulated gate bipolar transistor) driving interlocking circuit | |
| CN103683263A (en) | Circuit for preventing reverse plug in of direct current power supply and lamp | |
| CN203590014U (en) | Low-power IGBT (insulated gate bipolar transistor) driving interlocking circuit | |
| CN205725438U (en) | A kind of IGBT drive circuit with dual resisteance | |
| CN103595226B (en) | Transformer isolation symmetrical complement drive circuit | |
| CN204119014U (en) | A kind of IGBT for three level drives and protective circuit | |
| CN205283385U (en) | Prevent direct drive protection circuit of bridge arm | |
| CN202652172U (en) | Analog switch circuit structure | |
| CN104242611A (en) | Half-bridge IGBT driving module | |
| CN201877363U (en) | Relay drive circuit based on current transmission and transformation isolation technology | |
| CN204349946U (en) | P-MOSFET drive circuit | |
| CN103558447B (en) | A kind of no-voltage control circuit for tiny signal | |
| CN204168118U (en) | A kind of half-bridge IGBT drive circuit | |
| CN208656632U (en) | A kind of metal-oxide-semiconductor driving circuit inhibiting driving voltage spike | |
| CN206851097U (en) | A kind of LED anti-surge circuits | |
| CN206506453U (en) | A kind of active rectification control circuit and power-supply device | |
| CN203233299U (en) | IGBT drive circuit for braking of urban rail vehicle traction converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181116 Address after: 215000 No. 1000 Songhua Road, Guo Xiang street, Wuzhong Economic and Technological Development Zone, Suzhou, Jiangsu Patentee after: SUZHOU WEICHUANG ELECTRICAL EQUIPMENT TECHNOLOGY CO., LTD. Address before: 518000 Baoan District Shiyan street, Shenzhen, Guangdong Province, the third phase of the two phase Industrial Zone, C Patentee before: Flextronics Shenzhen City Electric Co,, Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 No. 1000 Songhua Road, Guo Xiang street, Wuzhong Economic and Technological Development Zone, Suzhou, Jiangsu Patentee after: Suzhou Weichuang Electrical Technology Co., Ltd. Address before: 215000 No. 1000 Songhua Road, Guo Xiang street, Wuzhong Economic and Technological Development Zone, Suzhou, Jiangsu Patentee before: SUZHOU WEICHUANG ELECTRICAL EQUIPMENT TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |