CN201075841Y - Reverse guide type IGBT high voltage bridge arm - Google Patents
Reverse guide type IGBT high voltage bridge arm Download PDFInfo
- Publication number
- CN201075841Y CN201075841Y CNU2007201022323U CN200720102232U CN201075841Y CN 201075841 Y CN201075841 Y CN 201075841Y CN U2007201022323 U CNU2007201022323 U CN U2007201022323U CN 200720102232 U CN200720102232 U CN 200720102232U CN 201075841 Y CN201075841 Y CN 201075841Y
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- igbt
- voltage
- emitter
- bridge arm
- bridge arms
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Abstract
A reverse conducting IGBT high-voltage bridge arm is used for solving the voltage resistance problem of the high-voltage bridge arm. The technical scheme of the utility model is that more than two IGBT components are adopted and connected in series to form the high-voltage bridge arm. A collector C in each IGBT component is connected with an emitter E of an upper-grade component; the emitter of the IGBT component is connected with the collector of a next-grade component. The collector C in a first-grade IGBT component is connected with a high potential of a bridge arm DC voltage. The emitter E of the last-grade IGBT component is connected with a low potential of the bridge arm DC voltage. The utility model has the advantages of simple structure of the bridge arm and good coherence of the IGBT on-off time. The utility model is used for the soft start of a high-voltage motor and can realize high-voltage frequency-conversion speed regulation, thus omitting a huge and unwieldy multiple phase-shifting transformer. A speed regulation device has the advantages of low cost, light weigh and high efficiency.
Description
Technical field
The utility model relates to a kind of high-voltage bridge arms, belongs to electronic equipment and device technology field.
Background technology
IGBT is an igbt, and it has eliminated the major defect of existing power MOSFET, is the higher full control power device of a kind of electrical control function admirable, operating frequency, in power electronics industry extensive application.But in the high-voltage applications field, owing to withstand voltage lower being restricted of single IGBT device.If series connection is used, often damage IGBT because of the fine difference of switching time or the influence of main circuit stray inductance.Therefore, there is big difficulty in the direct application of IGBT in the high pressure field.At present, the technical scheme that most of high voltage converter producer generally adopts is with multipleization phase shifting transformer high pressure to be reduced to many windings low pressure, carry out three phase rectifier respectively, under low pressure carry out the inversion of single-phase H bridge respectively, then a phase high pressure is formed in the stack of H bridge units in series with IGBT.The high voltage of exporting after such three-phase voltage Y-connection resupplies motor load, thereby realizes speed governing.The shortcoming of this scheme is: multipleization phase shifting transformer cost height, and bulky, speed regulating device efficient is reduced; The line contact is many, and used power device is many, and device reliability is descended.Domestic in recent years have indivedual producers to begin to adopt the IGBT that capacitive motherboard and several and capacitive motherboard join to constitute the high-voltage bridge arms of directly connecting, but it is higher to work as line voltage, when IGBT quantity increased, the installation between the number of plies of capacitive motherboard and IGBT and the motherboard, the replacing of device and maintenance were just comparatively complicated.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of against leading type IGBT high-voltage bridge arms, is used to realize the soft start of high-voltage motor and the direct high-voltage frequency conversion and speed-adjusting of high-voltage motor.
The technical scheme that addresses the above problem is:
A kind of contrary type IGBT high-voltage bridge arms of leading, it adopts the IGBT component string more than two to be connected into high-voltage bridge arms, and collector electrode C in every IGBT assembly and the emitter E in the next-higher assembly are joined, and the collector electrode in its emitter and the next stage assembly joins; Collector electrode C in the described first order IGBT assembly connects the high potential of brachium pontis direct voltage, and the emitter E of its afterbody IGBT connects the electronegative potential of brachium pontis direct voltage.
The above-mentioned contrary type IGBT high-voltage bridge arms of leading, the described contrary drive circuit Dr that leads type IGBT
1Employing optical fiber drives, the optical transmitting set Em of each IGBT control signal transmitting terminal
1～Em
NConnect successively, and be connected with signal input end.
The above-mentioned contrary type IGBT high-voltage bridge arms of leading, the state feedback signal of described IGBT is through drive circuit Dr separately
1～Dr
NState output end mouth SO emission, through Optical Fiber Transmission, obtain the status signal V of each IGBT at the low pressure receiving terminal
Stat1～V
StatN, and be connected to microprocessor.
The above-mentioned contrary type IGBT high-voltage bridge arms of leading, described each contraryly lead collector electrode C and the emitter E of type IGBT and connect the voltage equalizing protection circuit.
The high-voltage bridge arms that adopts the utility model to form, it is simple in structure to have a brachium pontis, the characteristics of IGBT high conformity switching time.Every IGBT operating state can be monitored in real time, and is safe and reliable, convenient for installation and maintenance.The function of brachium pontis is equivalent to the contrary type IGBT module of leading in a high-tension unit.Brachium pontis can be formed multiple connections such as single armed or three-phase bridge circuit as required, can realize the soft start of high-voltage motor, also can realize the direct high-voltage frequency conversion and speed-adjusting of high-voltage motor, thereby save the multipleization phase shifting transformer of huge heaviness, the speed regulating device cost is low, and is in light weight, the efficient height.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model.
The number in the figure implication is: IGBT
1～IGBT
N, igbt; Dr
1～Dr
N, drive circuit; EP
1～EP
N, the voltage equalizing protection circuit; V
Stat1～V
StatN, status signal, GX1, drive signal optical fiber; GX2, state feedback signal optical fiber.
Embodiment
Referring to Fig. 1, contrary high-voltage bridge arms of leading type IGBT composition described in the utility model is to be connected successively by 2 above IGBT assemblies, forms a complete high-voltage bridge arms.The concrete connection is the input of IGBT1 (the C utmost point of IGBT) J
0Connect the high potential of brachium pontis direct voltage; The input of the output of IGBT1 (the E utmost point of IGBT) and IGBT2 joins and constitutes a string interlink point J
1The input of the output of IGBT assembly and next stage IGBT assembly joins and constitutes another series connection node J
2The rest may be inferred, can constitute a plurality of such series connection nodes, the output J of afterbody IGBT assembly
NConnect the electronegative potential of brachium pontis direct voltage.
Each IGBT connects a drive circuit and the voltage equalizing protection circuit is formed an IGBT assembly.Can adopt a unit module against leading type IGBT, also can adopt Unit two (half-bridge) module.When adopting two unit modules, drive circuit can be made on the circuit board, and circuit theory is the same, but will isolate fully on electric.The quantity N of the required IGBT assembly of each high-voltage bridge arms is decided by the maximum voltage that brachium pontis rated direct voltage and every IGBT of high-voltage fence after rectification born.
The drive circuit of every IGBT is isolated on electric fully, all adopts optical signal transmission to drive, and the feedback of light signal state is to solve high-voltage bridge arms and the safe isolating problem of low-voltage control circuit and the anti-electromagnetic interference problem of control signal.At the transmitting terminal of IGBT control signal, with optical transmitting set Em
1～Em
NSeries connection successively, control signal directly drive IGBT through each drive signal optical fiber GX1 transmission simultaneously
1～IGBT
N, guaranteed each IGBT consistency of switching time.Adopt voltage equalizing protection circuit EP
1～EP
N, guarantee the dynamic and static unanimity of all pressing of each IGBT on the one hand, on the other hand the transient overvoltage that may occur on the IGBT is suppressed fast, guarantee the safety of IGBT.The state feedback signal of IGBT is through drive circuit Dr separately
1～Dr
NState output end mouth SO emission, state feedback signal optical fiber GX2 transmission obtains the status signal V of each IGBT at the low-voltage control circuit receiving terminal
Stat1～V
StatN, after microprocessor processes,,, can accurately show abort situation, and handle immediately if any fault with the operating state of every IGBT of accurate judgement.
Claims (4)
1. contrary type IGBT high-voltage bridge arms of leading, it is characterized in that: it adopts the IGBT component string more than two to be connected into high-voltage bridge arms, collector electrode C in every IGBT assembly and the emitter E in the next-higher assembly are joined, and the collector electrode in its emitter and the next stage assembly joins; Collector electrode C in the described first order IGBT assembly connects the high potential of brachium pontis direct voltage, and the emitter E of its afterbody IGBT connects the electronegative potential of brachium pontis direct voltage.
2. according to claim 1 against leading type IGBT high-voltage bridge arms, it is characterized in that: the described contrary drive circuit Dr that leads type IGBT
1Employing optical fiber drives, the optical transmitting set Em of each IGBT control signal transmitting terminal
1～Em
NConnect successively, and be connected with signal input end.
3. according to claim 2ly contrary lead type IGBT high-voltage bridge arms, it is characterized in that: the state feedback signal of described IGBT is through drive circuit Dr separately
1～Dr
NState output end mouth SO emission, through Optical Fiber Transmission, obtain the status signal V of each IGBT at the low pressure receiving terminal
Stat1～V
StatN, and be connected to microprocessor.
4. describedly contrary lead type IGBT high-voltage bridge arms according to claim 2 or 3, it is characterized in that: described each contraryly lead collector electrode C and the emitter E of type IGBT and connect the voltage equalizing protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201022323U CN201075841Y (en) | 2007-08-14 | 2007-08-14 | Reverse guide type IGBT high voltage bridge arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201022323U CN201075841Y (en) | 2007-08-14 | 2007-08-14 | Reverse guide type IGBT high voltage bridge arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075841Y true CN201075841Y (en) | 2008-06-18 |
Family
ID=39521098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201022323U Expired - Fee Related CN201075841Y (en) | 2007-08-14 | 2007-08-14 | Reverse guide type IGBT high voltage bridge arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075841Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103444068A (en) * | 2011-03-29 | 2013-12-11 | 西门子公司 | Modular multiple converter comprising reverse conductive power semiconductor switches |
-
2007
- 2007-08-14 CN CNU2007201022323U patent/CN201075841Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103444068A (en) * | 2011-03-29 | 2013-12-11 | 西门子公司 | Modular multiple converter comprising reverse conductive power semiconductor switches |
| CN103444068B (en) * | 2011-03-29 | 2016-08-17 | 西门子公司 | There is the modularity multiple convertor of the power semiconductor switch of energy reverse-conducting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAODING SIFANG SANYI ELECTRIC CO., LTD. Free format text: FORMER NAME: BAODING SANYI POWER ELECTRONIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 071051 No. 1968 Xiangyang North Street, Hebei, Baoding Patentee after: BAODING SIFANGSANYI ELECTRIC CO., LTD. Address before: 071051 No. 1968 Xiangyang North Street, Hebei, Baoding Patentee before: Baoding Sanyi Power Electronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20150814 |
|
| EXPY | Termination of patent right or utility model |