CN104570799A - Silicon controlled rectifier control circuit and system - Google Patents
Silicon controlled rectifier control circuit and system Download PDFInfo
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- CN104570799A CN104570799A CN201410799476.6A CN201410799476A CN104570799A CN 104570799 A CN104570799 A CN 104570799A CN 201410799476 A CN201410799476 A CN 201410799476A CN 104570799 A CN104570799 A CN 104570799A
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- silicon
- rectifier bridge
- trigger
- controlled silicon
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
The invention discloses a silicon controlled rectifier control circuit and a silicon controlled rectifier control system. An alternating current input end of a rectifier bridge is connected with a current-limiting voltage-reducing capacitor; a direct current input end is connected with a control electrode and a cathode of a micro-triggering silicon controlled rectifier through an energy-storage capacitor and a time delay circuit, and meanwhile connected with an anode of the micro-triggering silicon controlled rectifier through the energy-storage capacitor and an electromagnetic relay. In the scheme, the time delay circuit is used for controlling the micro-triggering silicon controlled rectifier to obtain or switch off the trigger current, and further used for realizing turn-off or break-over of the micro-triggering silicon controlled rectifier, so that the turn-off characteristic of the micro-triggering silicon controlled rectifier can be realized, the problems that the turn-off silicon controlled rectifier in the prior art is high in cost and difficult to purchase can be solved, and further the problem that the single-directional silicon controlled rectifier is not provided with the turn-off characteristic can be solved.
Description
Technical field
The present invention relates to field of electric control, particularly relate to a kind of silicon controlled control circuit and system.
Background technology
One-way SCR can the design of application to the power-saving running circuit of electromagnetic relay of turn-off characteristic highly beneficial, but existing one-way SCR does not generally possess can turn-off characteristic.
The cost of existing turn-off SCR is higher, and is difficult to buy, and address this problem, and what just need to realize one-way SCR can turn-off characteristic.
Summary of the invention
In view of this, the invention provides a kind of silicon controlled control circuit and system, high to solve turn-off SCR cost in prior art, be difficult to buy, and one-way SCR do not possess can the problem of turn-off characteristic, its concrete scheme is as follows:
A kind of silicon controlled control circuit, comprising: current limliting decompression capacitor, rectifier bridge, storage capacitor, delay circuit, electromagnetic relay and micro-trigger controlled silicon, wherein:
Described current limliting decompression capacitor is connected with the ac input end of described rectifier bridge, the forward dc output terminal of described rectifier bridge is connected with the positive pole of described storage capacitor, ground connection while the negative sense DC output end of described rectifier bridge is connected with the negative pole of described storage capacitor, the forward dc output terminal of described rectifier bridge is extremely connected with the control of described micro-trigger controlled silicon by the first output terminal of described delay circuit, be connected with the negative electrode of described micro-trigger controlled silicon by the second output terminal of described delay circuit simultaneously, the forward output terminal of described rectifier bridge is connected with the anode of described micro-trigger controlled silicon by described electromagnetic relay,
Described delay circuit obtains trigger current for controlling described micro-trigger controlled silicon, realizes shutoff or the conducting of micro-trigger controlled silicon.
Further, described current limliting decompression capacitor comprises: the first electric capacity and the second electric capacity, wherein:
The zero line of one termination civil power of described first electric capacity, the other end is connected with the first ac input end of described rectifier bridge; The live wire of one termination civil power of described second electric capacity, the other end is connected with the second ac input end of described rectifier bridge.
Further, described delay circuit comprises: the first resistance, the second resistance, the 3rd electric capacity and switch, wherein:
One end of described first resistance is connected with the forward dc output terminal of described rectifier bridge, the other end is extremely connected with the control of described micro-trigger controlled silicon, the control pole of described micro-trigger controlled silicon is connected by the negative electrode of switch with described micro-trigger controlled silicon, be connected by the negative electrode of the second resistance with described micro-trigger controlled silicon simultaneously, be connected with the negative electrode of described micro-trigger controlled silicon by described 3rd electric capacity simultaneously.
Further, the switch of described delay circuit is: triode.
Further, the switch of described delay circuit is: the phototriode in photoelectrical coupler.
A kind of thyristor control system, comprising: silicon controlled control circuit, wherein, described silicon controlled control circuit comprises: current limliting decompression capacitor, rectifier bridge, storage capacitor, delay circuit, electromagnetic relay and micro-trigger controlled silicon,
Described current limliting decompression capacitor is connected with the ac input end of described rectifier bridge, the forward dc output terminal of described rectifier bridge is connected with the positive pole of described storage capacitor, ground connection while the negative sense DC output end of described rectifier bridge is connected with the negative pole of described storage capacitor, the forward dc output terminal of described rectifier bridge is extremely connected with the control of described micro-trigger controlled silicon by the first output terminal of described delay circuit, be connected with the negative electrode of described micro-trigger controlled silicon by the second output terminal of described delay circuit simultaneously, the forward output terminal of described rectifier bridge is connected with the anode of described micro-trigger controlled silicon by described electromagnetic relay,
Described delay circuit obtains trigger current for controlling described micro-trigger controlled silicon, realizes shutoff or the conducting of micro-trigger controlled silicon.
Further, described current limliting decompression capacitor comprises: the first electric capacity and the second electric capacity, wherein:
The zero line of one termination civil power of described first electric capacity, the other end is connected with the first ac input end of described rectifier bridge; The live wire of one termination civil power of described second electric capacity, the other end is connected with the second ac input end of described rectifier bridge.
Further, described delay circuit comprises: the first resistance, the second resistance, the 3rd electric capacity and switch, wherein:
One end of described first resistance is connected with the forward dc output terminal of described rectifier bridge, the other end is extremely connected with the control of described micro-trigger controlled silicon, the control pole of described micro-trigger controlled silicon is connected by the negative electrode of switch with described micro-trigger controlled silicon, be connected by the negative electrode of the second resistance with described micro-trigger controlled silicon simultaneously, be connected with the negative electrode of described micro-trigger controlled silicon by described 3rd electric capacity simultaneously.
Further, the switch of described delay circuit is: triode.
Further, the switch of described delay circuit is: the phototriode in photoelectrical coupler.
As can be seen from technique scheme, silicon controlled control circuit disclosed in the present application and system, be connected with current limliting decompression capacitor by the ac input end of rectifier bridge, DC output end is connected by the control pole of storage capacitor and delay circuit and micro-trigger controlled silicon and negative electrode, is connected by storage capacitor and electromagnetic relay with the anode of micro-trigger controlled silicon simultaneously.Because delay circuit obtains or break trigger electric current for controlling micro-trigger controlled silicon in this programme, for realizing the shutoff of micro-trigger controlled silicon or conducting, thus realize micro-trigger controlled silicon can turn-off characteristic, to solve the problem that turn-off SCR cost in prior art is high, be difficult to purchase, meanwhile, also solving that one-way SCR do not possess can the problem of turn-off characteristic.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of Fig. 1 a kind of silicon controlled control circuit disclosed in the embodiment of the present invention;
The circuit diagram of delay circuit in Fig. 2 a kind of silicon controlled control circuit disclosed in the embodiment of the present invention;
The circuit diagram of Fig. 3 a kind of silicon controlled control circuit disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of silicon controlled control circuit, its structural representation as shown in Figure 1, comprising:
Current limliting decompression capacitor 11, rectifier bridge QL, storage capacitor C0, delay circuit 12, electromagnetic relay KP and micro-trigger controlled silicon VS, wherein:
Current limliting decompression capacitor 11 is connected with the ac input end of rectifier bridge QL, ground connection while the negative sense DC output end of rectifier bridge QL is connected with the negative pole of storage capacitor C0, the forward dc output terminal of rectifier bridge QL is connected with the control pole G of micro-trigger controlled silicon VS by the first output terminal of delay circuit 12, be connected with the negative electrode K of micro-trigger controlled silicon VS by the second output terminal of delay circuit 12, the forward output terminal of rectifier bridge QL is connected with the anode A of micro-trigger controlled silicon VS by electromagnetic relay KP simultaneously.
Delay circuit 12 obtains trigger current or break trigger electric current for controlling micro-trigger controlled silicon VS, to realize conducting to micro-trigger controlled silicon or shutoff.Electromagnetic relay KP is controlled by micro-trigger controlled silicon VS.
Storage capacitor C0 can be specially 22 μ F/400V.
Concrete, current limliting decompression capacitor 11 can comprise: the first electric capacity C1 and the second electric capacity C2.
The zero line of the one termination civil power of the first electric capacity C1, the other end is connected with first ac input end of rectifier bridge QL; The live wire of the one termination civil power of the second electric capacity C2, the other end is connected with second ac input end of rectifier bridge QL.
Wherein, the first electric capacity C1 can be specially 0.1 μ F, and the second electric capacity C2 can be specially 0.1 μ F.
In addition, the delay circuit 12 physical circuit figure in silicon controlled control circuit disclosed in the present embodiment as shown in Figure 2, comprising:
First resistance R1, the second resistance R2, the 3rd electric capacity C3 and K switch, wherein:
One end of first resistance R1 is connected with the forward dc output terminal of rectifier bridge QL, the other end is connected with the control pole G of micro-trigger controlled silicon VS, the control pole G of micro-trigger controlled silicon VS is connected by the negative electrode of K switch with micro-trigger controlled silicon VS, the control pole G of micro-trigger controlled silicon VS is connected with the negative electrode of micro-trigger controlled silicon VS by the second resistance R2 simultaneously, and the control pole G of micro-trigger controlled silicon VS is connected with the negative electrode of micro-trigger controlled silicon VS by the 3rd electric capacity C3 simultaneously.
Concrete, K switch can be mechanical switch, and also can be triode, can also be the electronic switches such as the phototriode in photoelectrical coupler, can also be the contact etc. of relay, be not specifically limited at this, corresponding to the present embodiment, accompanying drawing be for mechanical switch.
As shown in Figure 3, realize control to electromagnetic relay KP by K switch, when K switch closes, micro-trigger controlled silicon VS loses trigger current to the circuit diagram of silicon controlled control circuit disclosed in the present embodiment, turns off, and electromagnetic relay KP electric current of losing the job disconnects; When K switch disconnects, after time delay, micro-trigger controlled silicon VS obtains trigger current, conducting, electromagnetic relay KP conducting.
Silicon controlled control circuit disclosed in the present embodiment, be connected with current limliting decompression capacitor by the ac input end of rectifier bridge, DC output end is connected by the control pole of storage capacitor and delay circuit and micro-trigger controlled silicon and negative electrode, is connected by storage capacitor and electromagnetic relay with the anode of micro-trigger controlled silicon simultaneously.Because delay circuit obtains or break trigger electric current for controlling micro-trigger controlled silicon in this programme, for realizing the shutoff of micro-trigger controlled silicon or conducting, thus realize micro-trigger controlled silicon can turn-off characteristic, to solve the problem that turn-off SCR cost in prior art is high, be difficult to purchase, meanwhile, also solving that one-way SCR do not possess can the problem of turn-off characteristic.
Present embodiment discloses a kind of thyristor control system, comprising: silicon controlled control circuit, wherein, the structural representation of silicon controlled control circuit as shown in Figure 1, comprising:
Current limliting decompression capacitor 11, rectifier bridge QL, storage capacitor C0, delay circuit 12, electromagnetic relay KP and micro-trigger controlled silicon VS, wherein:
Current limliting decompression capacitor 11 is connected with the ac input end of rectifier bridge QL, ground connection while the negative sense DC output end of rectifier bridge QL is connected with the negative pole of storage capacitor C0, the forward dc output terminal of rectifier bridge QL is connected with the control pole G of micro-trigger controlled silicon VS by the first output terminal of delay circuit 12, be connected with the negative electrode K of micro-trigger controlled silicon VS by the second output terminal of delay circuit 12, the forward output terminal of rectifier bridge QL is connected with the anode A of micro-trigger controlled silicon VS by electromagnetic relay KP simultaneously.
Delay circuit 12 obtains trigger current or break trigger electric current for controlling micro-trigger controlled silicon VS, to realize conducting to micro-trigger controlled silicon or shutoff.Electromagnetic relay KP is controlled by micro-trigger controlled silicon VS.
Storage capacitor C0 can be specially 22 μ F/400V.
Concrete, current limliting decompression capacitor 11 can comprise: the first electric capacity C1 and the second electric capacity C2.
The zero line of the one termination civil power of the first electric capacity C1, the other end is connected with first ac input end of rectifier bridge QL; The live wire of the one termination civil power of the second electric capacity C2, the other end is connected with second ac input end of rectifier bridge QL.
Wherein, the first electric capacity C1 can be specially 0.1 μ F, and the second electric capacity C2 can be specially 0.1 μ F.
In addition, the delay circuit 12 physical circuit figure in silicon controlled control circuit disclosed in the present embodiment as shown in Figure 2, comprising:
First resistance R1, the second resistance R2, the 3rd electric capacity C3 and K switch, wherein:
One end of first resistance R1 is connected with the forward dc output terminal of rectifier bridge QL, the other end is connected with the control pole G of micro-trigger controlled silicon VS, the control pole G of micro-trigger controlled silicon VS is connected by the negative electrode of K switch with micro-trigger controlled silicon VS, the control pole G of micro-trigger controlled silicon VS is connected with the negative electrode of micro-trigger controlled silicon VS by the second resistance R2 simultaneously, and the control pole G of micro-trigger controlled silicon VS is connected with the negative electrode of micro-trigger controlled silicon VS by the 3rd electric capacity C3 simultaneously.
Concrete, K switch can be mechanical switch, and also can be triode, can also be the electronic switches such as the phototriode in photoelectrical coupler, can also be the contact etc. of relay, be not specifically limited at this, corresponding to the present embodiment, accompanying drawing be for mechanical switch.
As shown in Figure 3, realize control to electromagnetic relay KP by K switch, when K switch closes, micro-trigger controlled silicon VS loses trigger current to the circuit diagram of silicon controlled control circuit disclosed in the present embodiment, turns off, and electromagnetic relay KP electric current of losing the job disconnects; When K switch disconnects, after time delay, micro-trigger controlled silicon VS obtains trigger current, conducting, electromagnetic relay KP conducting.
Thyristor control system disclosed in the present embodiment, wherein, silicon controlled control circuit is connected with current limliting decompression capacitor by the ac input end of rectifier bridge, DC output end is connected by the control pole of storage capacitor and delay circuit and micro-trigger controlled silicon and negative electrode, is connected by storage capacitor and electromagnetic relay with the anode of micro-trigger controlled silicon simultaneously.Because delay circuit obtains or break trigger electric current for controlling micro-trigger controlled silicon in this programme, for realizing the shutoff of micro-trigger controlled silicon or conducting, thus realize micro-trigger controlled silicon can turn-off characteristic, to solve the problem that turn-off SCR cost in prior art is high, be difficult to purchase, meanwhile, also solving that one-way SCR do not possess can the problem of turn-off characteristic.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a silicon controlled control circuit, is characterized in that, comprising: current limliting decompression capacitor, rectifier bridge, storage capacitor, delay circuit, electromagnetic relay and micro-trigger controlled silicon, wherein:
Described current limliting decompression capacitor is connected with the ac input end of described rectifier bridge, the forward dc output terminal of described rectifier bridge is connected with the positive pole of described storage capacitor, ground connection while the negative sense DC output end of described rectifier bridge is connected with the negative pole of described storage capacitor, the forward dc output terminal of described rectifier bridge is extremely connected with the control of described micro-trigger controlled silicon by the first output terminal of described delay circuit, be connected with the negative electrode of described micro-trigger controlled silicon by the second output terminal of described delay circuit simultaneously, the forward output terminal of described rectifier bridge is connected with the anode of described micro-trigger controlled silicon by described electromagnetic relay,
Described delay circuit obtains trigger current for controlling described micro-trigger controlled silicon, realizes shutoff or the conducting of micro-trigger controlled silicon.
2. silicon controlled control circuit according to claim 1, is characterized in that, described current limliting decompression capacitor comprises: the first electric capacity and the second electric capacity, wherein:
The zero line of one termination civil power of described first electric capacity, the other end is connected with the first ac input end of described rectifier bridge; The live wire of one termination civil power of described second electric capacity, the other end is connected with the second ac input end of described rectifier bridge.
3. silicon controlled control circuit according to claim 1, is characterized in that, described delay circuit comprises: the first resistance, the second resistance, the 3rd electric capacity and switch, wherein:
One end of described first resistance is connected with the forward dc output terminal of described rectifier bridge, the other end is extremely connected with the control of described micro-trigger controlled silicon, the control pole of described micro-trigger controlled silicon is connected by the negative electrode of switch with described micro-trigger controlled silicon, be connected by the negative electrode of the second resistance with described micro-trigger controlled silicon simultaneously, be connected with the negative electrode of described micro-trigger controlled silicon by described 3rd electric capacity simultaneously.
4. silicon controlled control circuit according to claim 3, is characterized in that, the switch of described delay circuit is: triode.
5. silicon controlled control circuit according to claim 3, is characterized in that, the switch of described delay circuit is: the phototriode in photoelectrical coupler.
6. a thyristor control system, is characterized in that, comprising: silicon controlled control circuit, and wherein, described silicon controlled control circuit comprises: current limliting decompression capacitor, rectifier bridge, storage capacitor, delay circuit, electromagnetic relay and micro-trigger controlled silicon,
Described current limliting decompression capacitor is connected with the ac input end of described rectifier bridge, the forward dc output terminal of described rectifier bridge is connected with the positive pole of described storage capacitor, ground connection while the negative sense DC output end of described rectifier bridge is connected with the negative pole of described storage capacitor, the forward dc output terminal of described rectifier bridge is extremely connected with the control of described micro-trigger controlled silicon by the first output terminal of described delay circuit, be connected with the negative electrode of described micro-trigger controlled silicon by the second output terminal of described delay circuit simultaneously, the forward output terminal of described rectifier bridge is connected with the anode of described micro-trigger controlled silicon by described electromagnetic relay,
Described delay circuit obtains trigger current for controlling described micro-trigger controlled silicon, realizes shutoff or the conducting of micro-trigger controlled silicon.
7. system according to claim 6, is characterized in that, described current limliting decompression capacitor comprises: the first electric capacity and the second electric capacity, wherein:
The zero line of one termination civil power of described first electric capacity, the other end is connected with the first ac input end of described rectifier bridge; The live wire of one termination civil power of described second electric capacity, the other end is connected with the second ac input end of described rectifier bridge.
8. system according to claim 6, is characterized in that, described delay circuit comprises: the first resistance, the second resistance, the 3rd electric capacity and switch, wherein:
One end of described first resistance is connected with the forward dc output terminal of described rectifier bridge, the other end is extremely connected with the control of described micro-trigger controlled silicon, the control pole of described micro-trigger controlled silicon is connected by the negative electrode of switch with described micro-trigger controlled silicon, be connected by the negative electrode of the second resistance with described micro-trigger controlled silicon simultaneously, be connected with the negative electrode of described micro-trigger controlled silicon by described 3rd electric capacity simultaneously.
9. system according to claim 8, is characterized in that, the switch of described delay circuit is: triode.
10. system according to claim 8, is characterized in that, the switch of described delay circuit is: the phototriode in photoelectrical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799476.6A CN104570799B (en) | 2014-12-19 | 2014-12-19 | Silicon controlled rectifier control circuit and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799476.6A CN104570799B (en) | 2014-12-19 | 2014-12-19 | Silicon controlled rectifier control circuit and system |
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| CN104570799A true CN104570799A (en) | 2015-04-29 |
| CN104570799B CN104570799B (en) | 2017-05-03 |
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| CN201410799476.6A Active CN104570799B (en) | 2014-12-19 | 2014-12-19 | Silicon controlled rectifier control circuit and system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406295A (en) * | 1965-07-30 | 1968-10-15 | Arrow Hart & Hegeman Electric | Cycling on-off electronic timing system using one relay |
| CN2834021Y (en) * | 2005-09-13 | 2006-11-01 | 刘天亮 | Contact-less time relay |
| CN201839269U (en) * | 2010-10-21 | 2011-05-18 | 梁志辉 | Electronic switch |
| CN203708212U (en) * | 2013-12-20 | 2014-07-09 | 浙江海得新能源有限公司 | Forced turn-off circuit for thyristor |
-
2014
- 2014-12-19 CN CN201410799476.6A patent/CN104570799B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406295A (en) * | 1965-07-30 | 1968-10-15 | Arrow Hart & Hegeman Electric | Cycling on-off electronic timing system using one relay |
| CN2834021Y (en) * | 2005-09-13 | 2006-11-01 | 刘天亮 | Contact-less time relay |
| CN201839269U (en) * | 2010-10-21 | 2011-05-18 | 梁志辉 | Electronic switch |
| CN203708212U (en) * | 2013-12-20 | 2014-07-09 | 浙江海得新能源有限公司 | Forced turn-off circuit for thyristor |
Non-Patent Citations (1)
| Title |
|---|
| 魏建国等: "一种基于双向可控硅隔离型延时可控电路的实现方法", 《机械与电子》 * |
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