CN204068676U - A kind of high-power IGBT parallel drive frequency converter - Google Patents
A kind of high-power IGBT parallel drive frequency converter Download PDFInfo
- Publication number
- CN204068676U CN204068676U CN201420505554.2U CN201420505554U CN204068676U CN 204068676 U CN204068676 U CN 204068676U CN 201420505554 U CN201420505554 U CN 201420505554U CN 204068676 U CN204068676 U CN 204068676U
- Authority
- CN
- China
- Prior art keywords
- igbt
- frequency converter
- undersaturation
- power
- igbt parallel
- 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 - Fee Related
Links
Landscapes
- Power Conversion In General (AREA)
Abstract
The utility model discloses a kind of high-power IGBT parallel drive frequency converter, this frequency converter can meet high-power frequency conversion demand for control, and weak signal circuit safety can be ensured well, ensure that every IGBT is open-minded, what during shutoff, energy was synchronous obtains corresponding signal, it connects photoelectrical coupler at signal input part, this photoelectrical coupler detects through undersaturation and initialization circuit is just connecting, negative sense power stage triode, this just, the connection of negative sense power stage triode drives major loop altogether, this drives altogether on major loop and arranges shunting suppression circuit, described undersaturation detects and initialization circuit drives major loop to be connected to the corresponding terminal of IGBT parallel circuits module respectively together, described IGBT parallel circuits module is that a plurality of IGBT is formed in parallel.
Description
Technical field
The utility model relates to field of electrical components, is specifically related to a kind of high-power IGBT parallel drive frequency converter.
Background technology
Existing IGBT maximum current only has 600-800A, the use of heavy-duty motor can not be met, the IGBT parallel drive converter circuit of current appearance, can not ensure weak signal circuit safety well, and what every IGBT can not be synchronous opening, when turning off obtains corresponding signal.
Utility model content
For the deficiency that above-mentioned prior art exists, the utility model provides a kind of high-power IGBT parallel drive frequency converter, this frequency converter can meet high-power frequency conversion demand for control, and weak signal circuit safety can be ensured well, what ensure that every IGBT can be synchronous opening, when turning off obtains corresponding signal.
The utility model solves the technical scheme that its technical problem adopts:
A kind of high-power IGBT parallel drive frequency converter, signal input part connects photoelectrical coupler, this photoelectrical coupler detects through undersaturation and initialization circuit connects positive and negative to power stage triode, this positive and negative connection to power stage triode drives major loop altogether, this drives altogether on major loop and arranges shunting suppression circuit, and described undersaturation detects and initialization circuit drives major loop to be connected to the corresponding terminal of IGBT parallel circuits module respectively together.
Further, described undersaturation detects and initialization circuit includes operational amplifier and drives resistance, and described photoelectrical coupler is positive and negative to power stage triode through driving resistance to connect.
Further, above-mentioned operational amplifier arranges undersaturation fault-signal lead-out terminal.
Further, described undersaturation detects and a diode of connecting between initialization circuit with IGBT parallel circuits module, and a resistance in parallel.
Further, described IGBT parallel circuits module is that a plurality of IGBT is formed in parallel.
The beneficial effects of the utility model are:
In frequency converter described in the utility model, signal is inputted by photoelectrical coupler input, exports and promotes next stage current amplifier and amplify, to meet the demand driving many IGBT simultaneously, ensure that the synchronous requirement of every IGBT trigger instants simultaneously through Phototube Coupling; The shunting that drive circuit is arranged altogether suppresses circuit to avoid a small amount of main circuit current of diverter pole on drive signal line to cause the synchronous error of drive singal, safe and reliable operation when simultaneously ensureing that IGBT is in parallel; All implement undersaturation to each conducting trigger process of IGBT to detect, i.e. after conducting triggering signal is sent, in official hour, if saturation voltage drop is reduced to the below horizontal of regulation, protective circuit will export fault-signal at once, and notice front stage circuits stops triggering signal, to ensure IGBT safety; This frequency converter can be in parallel by the IGBT of many below 600A by parallel technology, output current is multiplied, meets the variable frequency control demand of heavy-duty motor.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram;
In figure, Arabic numerals are expressed as follows:
1. signal input part, 2. photoelectrical coupler, 3. undersaturation detect and initialization circuit, 4. drive altogether major loop, 5. diode, 6.IGBT parallel circuits module, 7. resistance, 8. operational amplifier, 9. drive resistance, 10. forward power output triode, 11. negative sense power stage triodes.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, a kind of high-power IGBT parallel drive frequency converter, signal input part 1 connects photoelectrical coupler 2, this photoelectrical coupler 2 detects through undersaturation and initialization circuit 3 connects forward power output triode 10, negative sense power stage triode 11, this positive and negative connection to power stage triode drives major loop 4 altogether, this drives altogether on major loop 4 and arranges shunting suppression circuit, and described undersaturation detects and initialization circuit 3 drives major loop 4 to be connected to the corresponding terminal of IGBT parallel circuits module 6 respectively together;
Described undersaturation detects and initialization circuit 3 includes operational amplifier 8 and drives resistance 9, and described photoelectrical coupler 2 connects positive and negative to power stage triode through driving resistance 9;
Above-mentioned operational amplifier 8 arranges undersaturation fault-signal lead-out terminal;
Described undersaturation detects and a diode 5 of connecting between initialization circuit 3 with IGBT parallel circuits module 6, and a resistance 7 in parallel;
Described IGBT parallel circuits module 6 is formed in parallel for a plurality of IGBT.
Claims (5)
1. a high-power IGBT parallel drive frequency converter, it is characterized in that: signal input part connects photoelectrical coupler, this photoelectrical coupler detects through undersaturation and initialization circuit connects positive and negative to power stage triode, this positive and negative connection to power stage triode drives major loop altogether, this drives altogether on major loop and arranges shunting suppression circuit, and described undersaturation detects and initialization circuit drives major loop to be connected to the corresponding terminal of IGBT parallel circuits module respectively together.
2. a kind of high-power IGBT parallel drive frequency converter as claimed in claim 1, it is characterized in that: described undersaturation detects and initialization circuit includes operational amplifier and drives resistance, and described photoelectrical coupler is positive and negative to power stage triode through driving resistance to connect.
3. a kind of high-power IGBT parallel drive frequency converter as claimed in claim 2, is characterized in that: above-mentioned operational amplifier arranges undersaturation fault-signal lead-out terminal.
4. a kind of high-power IGBT parallel drive frequency converter as claimed in claim 1, is characterized in that: described undersaturation detects and a diode of connecting between initialization circuit with IGBT parallel circuits module, and a resistance in parallel.
5. a kind of high-power IGBT parallel drive frequency converter as claimed in claim 1, is characterized in that: described IGBT parallel circuits module is that a plurality of IGBT is formed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505554.2U CN204068676U (en) | 2014-09-04 | 2014-09-04 | A kind of high-power IGBT parallel drive frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505554.2U CN204068676U (en) | 2014-09-04 | 2014-09-04 | A kind of high-power IGBT parallel drive frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068676U true CN204068676U (en) | 2014-12-31 |
Family
ID=52210118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505554.2U Expired - Fee Related CN204068676U (en) | 2014-09-04 | 2014-09-04 | A kind of high-power IGBT parallel drive frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890833A (en) * | 2019-11-19 | 2020-03-17 | 南京南瑞继保电气有限公司 | Parallel IGBT driving method of power electronic equipment |
-
2014
- 2014-09-04 CN CN201420505554.2U patent/CN204068676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890833A (en) * | 2019-11-19 | 2020-03-17 | 南京南瑞继保电气有限公司 | Parallel IGBT driving method of power electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203574367U (en) | Reverse connection protective circuit of power supply | |
| CN204794007U (en) | DC power supply circuit with short -circuit protection | |
| CN204068676U (en) | A kind of high-power IGBT parallel drive frequency converter | |
| CN204882781U (en) | High -power converter drives detection circuitry in advance | |
| CN203368305U (en) | Driving circuit of IGBT module power switch | |
| CN106134501B (en) | A kind of multichannel output module power supply is lower electric sequential control circuit preferentially | |
| CN202856616U (en) | DC/DC power supply circuit of photovoltaic MPPT controller | |
| CN204244170U (en) | Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux | |
| CN203882882U (en) | External relay drive circuit | |
| CN201194326Y (en) | Protection apparatus preventing reverse connection for DC power source | |
| CN204482103U (en) | A kind of low voltage difference LED drive circuit | |
| CN203377852U (en) | IGBT drive circuit | |
| CN204741259U (en) | Feeder protection equipment with power -fail protection | |
| CN204651247U (en) | A kind of electric cooker relay drive circuit | |
| CN204334538U (en) | A kind of small area analysis high-end drive circuit | |
| CN204258267U (en) | A kind of Intelligent building control system | |
| CN203722468U (en) | Hysteresis control unit used in power supply starting process of electronic tripper of low-voltage circuit breaker | |
| CN203301357U (en) | Inverter load impedance match circuit structure | |
| CN203733022U (en) | Current output module | |
| CN203117403U (en) | Remote equipment power supply monitoring system | |
| CN102594098B (en) | Energy-saving pulse triggering type thyristor driving circuit | |
| CN204103741U (en) | Capacitance energy storage charging circuit and there is the half bridge control of this circuit | |
| CN204482098U (en) | A kind of high-power LED driving circuit | |
| CN204180035U (en) | A kind of switch module based on Ultrafast recovery diode | |
| CN204721243U (en) | A kind of can the inverter of electric energy supplement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20190904 |