CN105119469A - Multi-path driving signal switching circuit and method for mining explosion-proof frequency converter - Google Patents
Multi-path driving signal switching circuit and method for mining explosion-proof frequency converter Download PDFInfo
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- CN105119469A CN105119469A CN201510538425.2A CN201510538425A CN105119469A CN 105119469 A CN105119469 A CN 105119469A CN 201510538425 A CN201510538425 A CN 201510538425A CN 105119469 A CN105119469 A CN 105119469A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005065 mining Methods 0.000 title claims abstract description 13
- 230000000295 complement effect Effects 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
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Abstract
The invention relates to the technical field of explosion-proof frequency converters, and discloses a multi-path driving signal switching circuit and a switching method for a mining explosion-proof frequency converter, wherein a first upper bridge arm photoelectric converter 1 and a first lower bridge arm photoelectric converter which are connected with an upper computer controller 6 are connected with a multi-path parallel signal processing interface circuit 5 through a logic interlocking circuit 2, and the driving output end and the signal input end of the multi-path parallel signal processing interface circuit 5 are respectively connected with a fully-controlled switching element 7; the signal output end of the multi-path parallel signal processing interface circuit 5 is connected with an upper computer controller 6 through an indication display circuit 4 and a second upper and lower bridge arm photoelectric converter 2; the output end of the first upper and lower bridge arm photoelectric converter 1 is connected with the indication display circuit 4. The invention can effectively improve the performance of the system. The modularized and functional design idea enhances the expandability of the system and has strong universality while accurately processing the multi-path parallel driving signals.
Description
Technical field
The present invention relates to explosion-proof frequency converter technical field, particularly relate to a kind of mining anti-explosion frequency converter multi-channel drive signal built-up circuit and method.
Background technology
For down-hole special occasions, the electric pressure mainly 660V/1140V of current use, but the driving motor of coal mine hoist, belt feeder, scrapper conveyor is also tending towards high-power, high-power, low-voltage, big current certainly will be caused, but the operating current that switching tube single tube allows is limited, according to circuit theory---parallel circuits total current equals each parallel branch electric current sum, and paralleled power switches constructs single phase circuit just becomes a kind of feasible scheme solved the problem.But, how to ensure paralleling switch pipe can simultaneously conducting, shutoff, just become another problem demanding prompt solution again, current existing mine-used frequency-converter multi-channel drive signal switching circuit board generally adopts discrete components and parts, and signal collection is comprehensive not, so not only add cost, also reduce the reliability of overall performance.Easily cause switching tube to break down, cause heavy economic losses.
Summary of the invention
In order to overcome existing mine-used frequency-converter multi-channel drive signal switching circuit board, to there is reliability not high, the problem that cost is high, the present invention proposes a kind of mine-used frequency-converter multi-channel drive signal built-up circuit and method, integrated chip is adopted to replace discrete components and parts, and increase switching tube fault-signal passage, effectively can improve the performance of system.
The present invention solves its technical problem, and the technical scheme adopted is:
A kind of mining anti-explosion frequency converter multi-channel drive signal built-up circuit, comprise: the first upper and lower bridge arm optical-electrical converter 1, second upper and lower bridge arm optical-electrical converter 2, logical interlock circuit 3, instruction display circuit 4, multi-channel parallel signal transacting interface circuit 5, the the first upper and lower bridge arm optical-electrical converter 1 connecting supervisory controller 6 is connected with multi-channel parallel signal transacting interface circuit 5 by logical interlock circuit 2, and drive output, the signal input part of multi-channel parallel signal transacting interface circuit 5 are connected with full-controlled switching element 7 respectively; The signal output part of multi-channel parallel signal transacting interface circuit 5 is connected with supervisory controller 6 by instruction display circuit 4, second upper and lower bridge arm optical-electrical converter 2; Wherein, the first upper and lower bridge arm optical-electrical converter 1 output is connected with instruction display circuit 4.
A kind of mining anti-explosion frequency converter multi-channel drive signal built-up circuit, described logical interlock circuit 3, comprising: not circuit 8, capacitor charge and discharge circuit 9, AND circuit 10, and described not circuit is electrically connected with AND circuit 10 by capacitor charge and discharge circuit 9; Described not circuit 8 is six these schmitt triggers anti-phase, and described AND circuit 10 is four group of two input AND circuit (10).
A kind of mining anti-explosion frequency converter multi-channel drive signal forwarding method, its step is as follows:
1), the two-way of host computer/controller (6) drives light signal to obtain corresponding electric analoging signal through optical-electrical converter (1),
2), again through logical interlock circuit (3), corresponding logical process is carried out to its electric analoging signal, obtains the complementary signal that 1 tunnel has Dead Zone,
3), again through multi-channel parallel signal transacting interface circuit (5) process, if single-phase brachium pontis needs n single tube paralleled power switches, then the complementary signal 2 tunnels with Dead Zone expands to n/2 road complementary signal,
4), finally send by winding displacement the n/2 road complementary drive signals that multi-channel parallel signal transacting interface circuit (5) obtains to full-controlled switch components and parts (7), drive conducting and the shutoff of main circuit of converter switching tube.
5) and the fault-signal that detects of the drive plate of full-controlled switch components and parts (7) feeds back to instruction display circuit (4) by multi-channel parallel signal transacting interface circuit (5), simultaneously, the drive singal obtained by optical-electrical converter (1) also sends instruction display circuit (4) to, instruction display circuit (4) like this both can display drive signals whether normal, can show again and whether have fault to occur
6), finally indicate display circuit (4) to export fault-signal to optical-electrical converter (2), convert electrical signals to optical signal feedback to host computer/controller (6).
A kind of mining anti-explosion frequency converter multi-channel drive signal forwarding method, the signal of telecommunication that described optical-electrical converter (1) exports, first six anti-phase these schmitt triggers (8) are sent to, negate process is carried out to it, then by capacitor charge and discharge circuit (9), the signal of complementation is increased Dead Time, the process eventually passing four group of two input AND circuit (10) obtains the required drive singal with the complementation of Dead Zone.
Owing to adopting technical scheme as above, of the present invention have following superiority:
A kind of mine-used frequency-converter multi-channel drive signal built-up circuit and method, adopt integrated chip to replace discrete components and parts, and increase switching tube fault-signal passage, effectively can improve the performance of system.While accurately processing multi-channel parallel drive singal, modularization, functionalized design thinking, enhance the extensibility of system, has very strong versatility.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is multi-channel drive signal built-up circuit block diagram.
Fig. 2 is logical interlock circuit block diagram.
In figure 1, drive singal optical-electrical converter, 2, fault-signal optical-electrical converter, 3, logical interlock circuit, 4, display circuit is indicated, 5, multi-channel parallel signal transacting interface circuit, 6, host computer/controller, 7, full-controlled switch components and parts, 8, six these schmitt triggers anti-phase, 9, capacitor charge and discharge circuit, 10, four group of two input AND circuit.
Embodiment
As shown in Figure 1, 2, a kind of mining anti-explosion frequency converter multi-channel drive signal built-up circuit, comprise: the first upper and lower bridge arm optical-electrical converter 1, second upper and lower bridge arm optical-electrical converter 2, logical interlock circuit 3, instruction display circuit 4, multi-channel parallel signal transacting interface circuit 5, the the first upper and lower bridge arm optical-electrical converter 1 connecting supervisory controller 6 is connected with multi-channel parallel signal transacting interface circuit 5 by logical interlock circuit 2, and drive output, the signal input part of multi-channel parallel signal transacting interface circuit 5 are connected with full-controlled switching element 7 respectively; The signal output part of multi-channel parallel signal transacting interface circuit 5 is connected with supervisory controller 6 by instruction display circuit 4, second upper and lower bridge arm optical-electrical converter 2; Wherein, the first upper and lower bridge arm optical-electrical converter 1 output is connected with instruction display circuit 4.
Described logical interlock circuit 3, comprising: not circuit 8, capacitor charge and discharge circuit 9, AND circuit 10, and described not circuit is electrically connected with AND circuit 10 by capacitor charge and discharge circuit 9; Described not circuit 8 is six these schmitt triggers anti-phase, and described AND circuit 10 is four group of two input AND circuit.
In FIG, the two-way of host computer/controller (6) drives light signal to obtain corresponding electric analoging signal through optical-electrical converter (1), through logical interlock circuit (3), corresponding logical process is carried out to it afterwards, obtain the complementary signal that 1 tunnel has Dead Zone, process through multi-channel parallel signal transacting interface circuit (5) again, if single-phase brachium pontis needs n single tube paralleled power switches, the complementary signal then 2 tunnels with Dead Zone expands to n/2 road complementary signal, finally send by winding displacement the n/2 road complementary drive signals that multi-channel parallel signal transacting interface circuit (5) obtains to full-controlled switch components and parts (7), drive conducting and the shutoff of main circuit of converter switching tube.In addition, the fault-signal that the drive plate of full-controlled switch components and parts (7) detects feeds back to instruction display circuit (4) by multi-channel parallel signal transacting interface circuit (5), simultaneously, the drive singal obtained by optical-electrical converter (1) also sends instruction display circuit (4) to, instruction display circuit (4) like this both can display drive signals whether normal, can show again and whether have fault to occur, finally indicate display circuit (4) to export fault-signal to optical-electrical converter (2), convert electrical signals to optical signal feedback to host computer/controller (6).
In fig. 2, first the signal of telecommunication that optical-electrical converter (1) exports sends six anti-phase these schmitt triggers (8) to, negate process is carried out to it, then by capacitor charge and discharge circuit (9), the signal of complementation is increased Dead Time, the process eventually passing four group of two input AND circuit (10) obtains the required drive singal with the complementation of Dead Zone.
Claims (4)
1. a mining anti-explosion frequency converter multi-channel drive signal built-up circuit, it is characterized in that: comprising: the first upper and lower bridge arm optical-electrical converter 1, second upper and lower bridge arm optical-electrical converter 2, logical interlock circuit 3, instruction display circuit 4, multi-channel parallel signal transacting interface circuit 5, the the first upper and lower bridge arm optical-electrical converter 1 connecting supervisory controller 6 is connected with multi-channel parallel signal transacting interface circuit 5 by logical interlock circuit 2, and drive output, the signal input part of multi-channel parallel signal transacting interface circuit 5 are connected with full-controlled switching element 7 respectively; The signal output part of multi-channel parallel signal transacting interface circuit 5 is connected with supervisory controller 6 by instruction display circuit 4, second upper and lower bridge arm optical-electrical converter 2; Wherein, the first upper and lower bridge arm optical-electrical converter 1 output is connected with instruction display circuit 4.
2. a kind of mining anti-explosion frequency converter multi-channel drive signal built-up circuit according to claim 1, it is characterized in that: described logical interlock circuit 3, comprise: not circuit 8, capacitor charge and discharge circuit 9, AND circuit 10, described not circuit is electrically connected with AND circuit 10 by capacitor charge and discharge circuit 9; Described not circuit 8 is six these schmitt triggers anti-phase, and described AND circuit 10 is four group of two input AND circuit (10).
3. adopt the forwarding method of a kind of mining anti-explosion frequency converter multi-channel drive signal circuit described in claim 1, it is characterized in that: its step is as follows:
1), the two-way of host computer/controller (6) drives light signal to obtain corresponding electric analoging signal through optical-electrical converter (1),
2), again through logical interlock circuit (3), corresponding logical process is carried out to its electric analoging signal, obtains the complementary signal that 1 tunnel has Dead Zone,
3), again through multi-channel parallel signal transacting interface circuit (5) process, if single-phase brachium pontis needs n single tube paralleled power switches, then the complementary signal 2 tunnels with Dead Zone expands to n/2 road complementary signal,
4), finally send by winding displacement the n/2 road complementary drive signals that multi-channel parallel signal transacting interface circuit (5) obtains to full-controlled switch components and parts (7), drive conducting and the shutoff of main circuit of converter switching tube,
5) and the fault-signal that detects of the drive plate of full-controlled switch components and parts (7) feeds back to instruction display circuit (4) by multi-channel parallel signal transacting interface circuit (5), simultaneously, the drive singal obtained by optical-electrical converter (1) also sends instruction display circuit (4) to, instruction display circuit (4) like this both can display drive signals whether normal, can show again and whether have fault to occur
6), finally indicate display circuit (4) to export fault-signal to optical-electrical converter (2), convert electrical signals to optical signal feedback to host computer/controller (6).
4. a kind of mining anti-explosion frequency converter multi-channel drive signal forwarding method according to claim 3, it is characterized in that: the signal of telecommunication that described optical-electrical converter (1) exports, first six anti-phase these schmitt triggers (8) are sent to, negate process is carried out to it, then by capacitor charge and discharge circuit (9), the signal of complementation is increased Dead Time, the process eventually passing four group of two input AND circuit (10) obtains the required drive singal with the complementation of Dead Zone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510538425.2A CN105119469B (en) | 2015-08-28 | 2015-08-28 | Multi-path driving signal switching circuit and method for mining explosion-proof frequency converter |
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| CN201510538425.2A CN105119469B (en) | 2015-08-28 | 2015-08-28 | Multi-path driving signal switching circuit and method for mining explosion-proof frequency converter |
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| CN105119469A true CN105119469A (en) | 2015-12-02 |
| CN105119469B CN105119469B (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
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| CN102263490A (en) * | 2011-08-09 | 2011-11-30 | 湖南中科电气股份有限公司 | High-voltage frequency converter power unit drive-pulse transmission and communication system |
| CN102710103A (en) * | 2012-05-24 | 2012-10-03 | 中国矿业大学 | Double-circuit high-voltage large power IGBT (Insulated Gate Bipolar Translator) drive circuit |
| CN103532357A (en) * | 2012-07-04 | 2014-01-22 | 北京精密机电控制设备研究所 | MOSFET-based power driving circuit |
| CN205178857U (en) * | 2015-08-28 | 2016-04-20 | 洛阳中重自动化工程有限责任公司 | Multi-path driving signal switching circuit of mining explosion-proof frequency converter |
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2015
- 2015-08-28 CN CN201510538425.2A patent/CN105119469B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263490A (en) * | 2011-08-09 | 2011-11-30 | 湖南中科电气股份有限公司 | High-voltage frequency converter power unit drive-pulse transmission and communication system |
| CN102710103A (en) * | 2012-05-24 | 2012-10-03 | 中国矿业大学 | Double-circuit high-voltage large power IGBT (Insulated Gate Bipolar Translator) drive circuit |
| CN103532357A (en) * | 2012-07-04 | 2014-01-22 | 北京精密机电控制设备研究所 | MOSFET-based power driving circuit |
| CN205178857U (en) * | 2015-08-28 | 2016-04-20 | 洛阳中重自动化工程有限责任公司 | Multi-path driving signal switching circuit of mining explosion-proof frequency converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
| CN105471234B (en) * | 2015-12-16 | 2018-02-23 | 山西惠特科技有限公司 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
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| CN105119469B (en) | 2018-11-30 |
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