CN211127764U - Unidirectional silicon controlled switch capable of being forcibly turned off - Google Patents
Unidirectional silicon controlled switch capable of being forcibly turned off Download PDFInfo
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- CN211127764U CN211127764U CN201922465832.1U CN201922465832U CN211127764U CN 211127764 U CN211127764 U CN 211127764U CN 201922465832 U CN201922465832 U CN 201922465832U CN 211127764 U CN211127764 U CN 211127764U
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- controlled rectifier
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- direct current
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Abstract
The utility model discloses a can force one-way silicon controlled switch who turns off relates to and can turn off silicon controlled rectifier technical field, including the diode, current sensor, the silicon controlled rectifier, the contactor, P L C controller, storage battery, the direct current positive pole, the direct current negative pole, storage battery's negative pole and direct current negative pole are connected, storage battery's anodal A with the silicon controlled rectifier is connected, the K of silicon controlled rectifier is extremely connected with the positive pole of diode, and current sensor cluster is between the K of silicon controlled rectifier utmost point and the positive pole of diode, the negative pole and the direct current positive pole of diode are connected, the A of silicon controlled rectifier passes through the positive pole of contactor and diode and is connected, P L C controller is connected with the G utmost point, contactor, the current sensor of silicon controlled rectifier respectively, the utility model discloses can force the silicon controlled rectifier when logic to withdraw from turn off, control is simple reliable, both satisfied logic switches on, also can the logic withdraw from simultaneously.
Description
Technical Field
The utility model relates to a can turn-off silicon controlled rectifier technical field specifically is a can force one-way silicon controlled rectifier switch of turn-off.
Background
The unidirectional silicon controlled rectifier is widely applied as a fast switch in a direct current standby power supply loop. However, when the logic quits to be turned off, the on state is still maintained because the turn-off condition of the silicon controlled rectifier cannot be achieved, so that the fault rate of the standby direct-current power supply circuit is increased or the direct-current standby battery pack cannot be fully charged. The existing turn-off controllable silicon has large turn-off trigger current and complex circuit.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the present invention provides a one-way thyristor switch capable of being forcibly turned off.
The utility model aims at realizing through the following technical scheme that a can force unidirectional silicon controlled switch who turns off, including diode 1, current sensor 2, silicon controlled rectifier 3, contactor 4, P L C controller 5, storage battery 6, the anodal DC +, direct current negative pole DC-, storage battery 6's negative pole with direct current negative pole DC-connects, storage battery 6's positive pole with silicon controlled rectifier 3's A is anodal to be connected, silicon controlled rectifier 3's K utmost point with diode 1's positive pole is connected, just current sensor 2 cluster is in silicon controlled rectifier 3's K utmost point with between diode 1's the positive pole, diode 1's negative pole with direct current positive pole DC + connects, silicon controlled rectifier 3's A utmost point passes through contactor 4 with diode 1's positive pole is connected, P L C controller 5 respectively with silicon controlled rectifier 3's G utmost point, contactor 4, current sensor 2 are connected.
In a preferred embodiment, the diode 1 is a rectifier diode.
The utility model has the advantages that:
the utility model discloses can force the silicon controlled rectifier to turn-off when the logic withdraws from turn-off, control is simple reliable, has both satisfied the logic and has switched on, also can the logic withdraw from simultaneously, solves the problem that one-way silicon controlled rectifier can only be by the nature turn-off.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a circuit structure diagram of a unidirectional thyristor switch capable of being forcibly turned off according to an embodiment of the present invention.
In the figure:
1. the device comprises a diode, a current sensor, a thyristor, a contactor, a P L C controller, a storage battery pack, a DC +, a direct current positive electrode and a DC-direct current negative electrode, wherein the diode is 2, the current sensor is 3, the thyristor is 4, the contactor is 5, the P L C controller is 6, the storage battery pack is 6, the direct current positive electrode is DC.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The invention will be further described with reference to the drawings and specific examples.
As shown in fig. 1, the utility model provides a can force one-way silicon controlled switch who turns off, including diode 1, current sensor 2, silicon controlled rectifier 3, contactor 4, P L C controller 5, storage battery 6, direct current anodal DC +, direct current negative pole DC-, storage battery 6's negative pole and direct current negative pole DC-are connected, storage battery 6's positive pole and silicon controlled rectifier 3's A are anodal to be connected, silicon controlled rectifier 3's K is anodal to be connected with diode 1, and current sensor 2 cluster is between silicon controlled rectifier 3's K utmost point and diode 1's positive pole, diode 1's negative pole and direct current anodal DC + are connected, silicon controlled rectifier 3's A is anodal to be connected through contactor 4 and diode 1, P L C controller 5 is connected with silicon controlled rectifier 3's G utmost point, contactor 4, current sensor 2 respectively.
In a specific embodiment, the diode 1 is a rectifier diode, and plays roles of isolation and protection.
The working principle is as follows:
the embodiment of the utility model provides an in, when P L C controller 5 detected the positive DC pole DC + and the voltage value of direct current negative pole DC-is less than the setting value, trigger silicon controlled rectifier 3 through silicon controlled rectifier 3's G utmost point and switch on, current sensor 2 detects the electric current and sends current signal to P L C controller 5 afterwards, P L C controller 5 control contactor 4 switches on, silicon controlled rectifier 3 reachs the turn-off condition this moment, turn-off in the twinkling of an eye, silicon controlled rectifier 3 closes the back, P L C controller 5 passes through current sensor 2's feedback, contactor 4 is turn-off in P L C controller 5 control.
To sum up, the utility model discloses can withdraw from when turn-offs at the logic, force to turn off the silicon controlled rectifier, control is simple reliable, has both satisfied the logic and has switched on, also can the logic withdraw from simultaneously, solves the problem that one-way silicon controlled rectifier can only rely on the nature to turn off.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (2)
1. The unidirectional silicon controlled switch capable of being forcibly turned off is characterized by comprising a diode (1), a current sensor (2), a silicon controlled rectifier (3), a contactor (4), a P L C controller (5), a storage battery pack (6), a direct current positive electrode DC +, a direct current negative electrode DC-, wherein the negative electrode of the storage battery pack (6) is connected with the direct current negative electrode DC-, the positive electrode of the storage battery pack (6) is connected with the A electrode of the silicon controlled rectifier (3), the K electrode of the silicon controlled rectifier (3) is connected with the positive electrode of the diode (1), the current sensor (2) is connected between the K electrode of the silicon controlled rectifier (3) and the positive electrode of the diode (1) in series, the negative electrode of the diode (1) is connected with the direct current positive electrode DC +, the A electrode of the silicon controlled rectifier (3) is connected with the positive electrode of the diode (1) through the contactor (4), and the P L C controller (5) is respectively connected with the G electrode of the silicon controlled rectifier (3), the contactor (4) and the current sensor (2).
2. A unidirectional thyristor switch capable of being forced off according to claim 1, wherein: the diode (1) is a rectifier diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465832.1U CN211127764U (en) | 2019-12-31 | 2019-12-31 | Unidirectional silicon controlled switch capable of being forcibly turned off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922465832.1U CN211127764U (en) | 2019-12-31 | 2019-12-31 | Unidirectional silicon controlled switch capable of being forcibly turned off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211127764U true CN211127764U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922465832.1U Active CN211127764U (en) | 2019-12-31 | 2019-12-31 | Unidirectional silicon controlled switch capable of being forcibly turned off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211127764U (en) |
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2019
- 2019-12-31 CN CN201922465832.1U patent/CN211127764U/en active Active
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