CN204231187U - A kind of novel thyristor circuits for triggering - Google Patents
A kind of novel thyristor circuits for triggering Download PDFInfo
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- CN204231187U CN204231187U CN201420672930.7U CN201420672930U CN204231187U CN 204231187 U CN204231187 U CN 204231187U CN 201420672930 U CN201420672930 U CN 201420672930U CN 204231187 U CN204231187 U CN 204231187U
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Abstract
The utility model relates to a kind of novel thyristor circuits for triggering, its main feature is: comprise three circuits for triggering be connected between three phase alternating current motor and microprocessor, each circuits for triggering include two photoelectrical couplers, two controllable silicons and two diodes, the physical circuit annexation of each circuits for triggering is: the former limit Diode series of two photoelectrical couplers together, the former limit diode cathode of the first photoelectrical coupler is connected with the waveform control signal port of microprocessor by triode, the former limit diode cathode of the second photoelectrical coupler is connected on Microprocessor S3C44B0X port, the secondary of two photoelectrical couplers is connected on two controllable silicons respectively by diode, two controllable silicons are connected to one of alternating current machine and connect line end.This employing MCU and photoelectrical coupler realize high frequency modulated pulse triggering function, have increased substantially unfailing performance, have reduced circuit cost, have that circuit structure is simple, reliability is high, a debugging and be suitable for the features such as convenient.
Description
Technical field
The utility model belongs to circuits for triggering technical field, especially a kind of novel thyristor circuits for triggering.
Background technology
Thyristor gating circuit adopts Isolated Pulse Transformer control loop and major loop to be isolated usually, and the direct current utilizing pulse transformer secondary side to produce carries out conducting to the controllable silicon triggering major loop, thus reaches the object controlling alternating current.Existing circuits for triggering generally include the parts such as controllable silicon door collection triggering pulse generator, pulse power amplifier circuit and pulse transformer, and its circuit structure is complicated, poor reliability and difficult in maintenance.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of structure is simple, reliability is high and is convenient to the novel thyristor circuits for triggering safeguarded.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of novel thyristor circuits for triggering, comprise three circuits for triggering be connected between three phase alternating current motor and microprocessor, each circuits for triggering include two photoelectrical couplers, two controllable silicons and two diodes, the physical circuit annexation of each circuits for triggering is: the former limit Diode series of two photoelectrical couplers together, the former limit diode cathode of the first photoelectrical coupler is connected with the waveform control signal port of microprocessor by triode, the former limit diode cathode of the second photoelectrical coupler is connected on Microprocessor S3C44B0X port, the secondary of two photoelectrical couplers is connected on two controllable silicons respectively by diode, two controllable silicons are connected to one of alternating current machine and connect line end.
And described photoelectrical coupler adopts TLP160J device, BRT12 device or MOC3012 device.
And described controllable silicon is triode ac switch.
Advantage of the present utility model and good effect are:
The utility model is reasonable in design, it adopts MCU and photoelectrical coupler to realize high frequency modulated pulse triggering function, solve and the problem that pulse and broad pulse can increase the door collection loss of thyristor when adopting two burst pulse, may to be lost, trigger equipment reliability is significantly improved, simultaneously, owing to eliminating pulse transformer, system driving circuit cost is greatly reduced, has that circuit structure is simple, reliability is high, debugging and be suitable for the features such as convenient.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
A kind of novel thyristor circuits for triggering, as shown in Figure 1, comprise three circuits for triggering be connected between three phase alternating current motor and MCU (microprocessor).The structure of three circuits for triggering is identical, each circuits for triggering include two photoelectrical couplers, two controllable silicons and two diodes, in the present embodiment, TLP160J (or adopting BRT12, MOC3012 etc.) photoelectrical coupler that photoelectrical coupler adopts, its output rated voltage is 600V, and maximum isolation voltage is 2500V.In FIG, first circuits for triggering comprises two photoelectrical couplers (OT7, OT8), two controllable silicons (VT1, VT2) and two diodes (D2, D3), second circuits for triggering comprises two photoelectrical couplers (OT9, OT10), two controllable silicons (VT3, VT4) and two diodes (D4, D5), and the 3rd circuits for triggering comprise two photoelectrical couplers (OT11, OT12), two controllable silicons (VT5, VT6) and two diodes (D6, D7).The physical circuit annexation of each circuits for triggering is (being described for first circuits for triggering): two photoelectrical coupler (OT7, OT8) former limit Diode series together, the former limit diode cathode of photoelectrical coupler OT7 is connected by the waveform control signal port PA5 of triode BC847A and MCU (microprocessor), the negative pole of the former limit diode of photoelectrical coupler OT8 is connected to the PC2 port of MCU (microprocessor), two photoelectrical coupler (OT7, OT8) secondary is respectively by diode (D2, D3) be connected on two controllable silicon VT1 and VT2, two controllable silicon VT1, VT2 is connected on a phase port of alternating current machine.The waveform control signal port PA5 of MCU (microprocessor) is connected on the positive pole of first former limit diode of each circuits for triggering, on the negative pole of each circuits for triggering second former limit diode and the I/O port of MCU (microprocessor), two controllable silicons of each circuits for triggering are connected on three phase alternating current motor.In the present embodiment, controllable silicon is triode ac switch.
The Waveform Control port PA5 of MCU (microprocessor) is pulse blocking signal, and during work, it is in high level state.For first circuits for triggering circuit, if OT8_PC2 is low level, when PA5 is high level, the conducting of photoelectrical coupler OT8, OT7 two optocouplers, thus realize the control to three phase alternating current motor.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore the utility model comprises the embodiment be not limited to described in embodiment; every other execution modes drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope of the utility model protection equally.
Claims (3)
1. novel thyristor circuits for triggering, it is characterized in that: comprise three circuits for triggering be connected between three phase alternating current motor and microprocessor, each circuits for triggering include two photoelectrical couplers, two controllable silicons and two diodes, the physical circuit annexation of each circuits for triggering is: the former limit Diode series of two photoelectrical couplers together, the former limit diode cathode of the first photoelectrical coupler is connected with the waveform control signal port of microprocessor by triode, the former limit diode cathode of the second photoelectrical coupler is connected on Microprocessor S3C44B0X port, the secondary of two photoelectrical couplers is connected on two controllable silicons respectively by diode, two controllable silicons are connected to one of alternating current machine and connect line end.
2. a kind of novel thyristor circuits for triggering according to claim 1, is characterized in that: described photoelectrical coupler adopts TLP160J device, BRT12 device or MOC3012 device.
3. a kind of novel thyristor circuits for triggering according to claim 1, is characterized in that: described controllable silicon is triode ac switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672930.7U CN204231187U (en) | 2014-11-12 | 2014-11-12 | A kind of novel thyristor circuits for triggering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672930.7U CN204231187U (en) | 2014-11-12 | 2014-11-12 | A kind of novel thyristor circuits for triggering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204231187U true CN204231187U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420672930.7U Expired - Fee Related CN204231187U (en) | 2014-11-12 | 2014-11-12 | A kind of novel thyristor circuits for triggering |
Country Status (1)
| Country | Link |
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| CN (1) | CN204231187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836423A (en) * | 2015-05-20 | 2015-08-12 | 北华大学 | Three-phase bridge rectifier circuit silicon controlled rectifier triggering method and three-phase bridge rectifier circuit silicon controlled rectifier triggering device |
-
2014
- 2014-11-12 CN CN201420672930.7U patent/CN204231187U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836423A (en) * | 2015-05-20 | 2015-08-12 | 北华大学 | Three-phase bridge rectifier circuit silicon controlled rectifier triggering method and three-phase bridge rectifier circuit silicon controlled rectifier triggering device |
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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 |
Granted publication date: 20150325 Termination date: 20151112 |
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| EXPY | Termination of patent right or utility model |