阅读说明：本技术 高压串联可控硅双电源触发系统 (High-voltage series silicon controlled rectifier dual-power trigger system ) 是由 陈国成 张军军 董天平 杜小刚 徐颖 赵阳 薛超 李刚 叶荣微 于 2021-01-25 设计创作，主要内容包括：本发明涉及一种高压串联可控硅双电源触发系统,包括：全桥整流电路、稳压电路、电压转换电路、触发电路、稳态供电电路、暂态供电电路和可控硅接口；全桥整流电路将高压电缆中的电压整流成原始电压；稳压电路对原始电压进行稳压操作,得到暂态供电电压；电压转换电路对暂态供电电压进行电压转换,得到比暂态供电电压小的稳态供电电压；暂态供电电路将暂态供电电压传输给触发电路,稳态供电电路将稳态供电电压传输给触发电路,以使触发电路通过可控硅接口触发可控硅。采用本发明的技术方案,利用比暂态供电电压小的稳态供电电压为触发电路供电,能够降低触发电路中的电阻功率,这样便能降低整体的触发功率,从而实现节能。(The invention relates to a high-voltage series silicon controlled rectifier dual-power trigger system, which comprises: the power supply circuit comprises a full-bridge rectifier circuit, a voltage stabilizing circuit, a voltage conversion circuit, a trigger circuit, a steady-state power supply circuit, a transient power supply circuit and a silicon controlled interface; the full-bridge rectification circuit rectifies the voltage in the high-voltage cable into original voltage; the voltage stabilizing circuit performs voltage stabilizing operation on the original voltage to obtain a transient power supply voltage; the voltage conversion circuit performs voltage conversion on the transient power supply voltage to obtain a steady-state power supply voltage smaller than the transient power supply voltage; the transient power supply circuit transmits transient power supply voltage to the trigger circuit, and the steady-state power supply circuit transmits steady-state power supply voltage to the trigger circuit, so that the trigger circuit triggers the controllable silicon through the controllable silicon interface. By adopting the technical scheme of the invention, the trigger circuit is powered by the steady-state power supply voltage smaller than the transient-state power supply voltage, so that the resistance power in the trigger circuit can be reduced, the integral trigger power can be reduced, and the energy conservation is realized.)

1. The utility model provides a high pressure series connection silicon controlled rectifier dual supply trigger system which characterized in that includes: the power supply circuit comprises a full-bridge rectifier circuit, a voltage stabilizing circuit, a voltage conversion circuit, a trigger circuit, a steady-state power supply circuit, a transient power supply circuit and a silicon controlled interface;

the full-bridge rectifying circuit is connected with the voltage stabilizing circuit;

the voltage stabilizing circuit is respectively connected with the voltage conversion circuit and the transient power supply circuit;

the voltage conversion circuit is connected with the steady-state power supply circuit;

the transient state power supply circuit and the steady state power supply circuit are respectively connected with the trigger circuit;

the trigger circuit is connected with the controlled silicon through the controlled silicon interface;

the full-bridge rectifying circuit is used for rectifying the voltage in the high-voltage cable into original voltage;

the voltage stabilizing circuit is used for performing voltage stabilizing operation on the original voltage to obtain transient power supply voltage;

the voltage conversion circuit is used for performing voltage conversion on the transient state power supply voltage to obtain a steady state power supply voltage;

the transient power supply circuit is used for transmitting the transient power supply voltage to the trigger circuit, and the steady-state power supply circuit is used for transmitting the steady-state power supply voltage to the trigger circuit, so that the trigger circuit triggers the controllable silicon through the controllable silicon interface;

wherein the steady state supply voltage is less than the transient supply voltage.

2. The dual power triggering system of claim 1, further comprising a discharge circuit;

the discharge circuit is connected with the transient power supply circuit;

the discharge circuit is used for carrying out capacitance discharge operation on the transient power supply circuit before the thyristor is triggered each time so as to ensure the continuous work of the transient power supply circuit.

3. The high voltage series thyristor dual supply triggering system of claim 2, wherein the triggering circuit comprises: the trigger optical fiber assembly, the driver and the driving circuit;

the triggering optical fiber assembly is connected with the driving circuit through the driver;

the driving circuit is respectively connected with the steady-state power supply circuit, the transient-state power supply circuit and the silicon controlled interface;

the triggering optical fiber assembly is used for transmitting a triggering signal sent by the main controller to the driver so that the driver triggers the controllable silicon connected with the controllable silicon interface through the driving circuit.

4. The high-voltage series silicon controlled double-power-supply triggering system as claimed in claim 1, wherein the voltage conversion circuit is a direct current chopper circuit.

5. The dual power triggering system of claim 3, wherein the full bridge rectifier circuit comprises: the magnetic ring comprises a magnetic ring, a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a second capacitor;

the first end of the magnetic ring is connected with the first end of the first diode and the second end of the second diode respectively;

the second end of the magnetic ring is respectively connected with the first end of the third diode and the second end of the fourth diode;

the second end of the first diode, the second end of the third diode, the first end of the first capacitor and the first end of the second capacitor are respectively connected with the first end of the voltage stabilizing circuit;

the first end of the second diode, the first end of the fourth diode, the second end of the first capacitor, the second end of the second capacitor and the second end of the voltage stabilizing circuit are all grounded.

6. The dual power triggering system of claim 5, wherein the voltage regulator circuit comprises: the circuit comprises a first chip, a fifth diode, a sixth diode, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor and a third resistor;

the first end of the first chip is respectively connected with the first end of the first resistor, the first end of the second resistor, the first end of the third capacitor, the first end of the third resistor and the first end of the sixth diode;

the second end of the first chip is respectively connected with the first end of the fifth diode, the second end of the third resistor, the second end of the sixth diode, the first end of the fourth capacitor and the first end of the fifth capacitor;

the original voltage generated by the full-bridge rectification circuit is input from the third end of the first chip, the second end of the first chip outputs the transient power supply voltage, the second end of the first chip is connected with a transient power supply corresponding to the transient power supply voltage, and the first end of the first chip is connected with the original power supply corresponding to the original voltage;

the third end of the first chip is respectively connected with the second end of the fifth diode, the second end of the first diode, the second end of the third diode, the first end of the first capacitor and the first end of the second capacitor;

the second end of the first resistor, the second end of the second resistor, the second end of the third capacitor, the second end of the fourth capacitor and the second end of the fifth capacitor are all grounded.

7. The high voltage series thyristor dual supply triggering system of claim 6, wherein the voltage conversion circuit comprises: the LED chip comprises a second chip, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, an inductor and a first LED;

the first end of the second chip is connected with the fourth end of the second chip through the eighth capacitor;

the second end of the second chip and the first end of the sixth capacitor are both connected with the transient power supply;

the third end of the second chip is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor and the first end of the seventh capacitor;

the second end of the fourth resistor is connected with the original power supply;

a fourth end of the second chip is connected to the first end of the sixth resistor, the first end of the ninth capacitor, the first end of the tenth capacitor, the first end of the eleventh capacitor, and the first end of the eighth resistor through the inductor, respectively;

the fourth end of the second chip outputs the steady-state power supply voltage through the inductor, and the fourth end of the second chip is connected with a steady-state power supply corresponding to the steady-state power supply voltage through the inductor;

a fifth end of the second chip is connected with a second end of the sixth resistor, a first end of the seventh resistor and a second end of the ninth capacitor respectively;

a second end of the eighth resistor is connected with a first end of the first light emitting diode;

the second end of the sixth capacitor, the second end of the fifth resistor, the second end of the seventh capacitor, the sixth end of the second chip, the second end of the seventh resistor, the second end of the tenth capacitor, the second end of the eleventh capacitor, and the second end of the first light emitting diode are all grounded.

8. The dual power triggering system of claim 7, wherein the steady state power supply circuit comprises: a ninth resistor, a tenth resistor, a twelfth capacitor and a seventh diode;

the first end of the ninth resistor is connected with the steady-state power supply;

a second end of the ninth resistor is connected with a first end of the twelfth capacitor and a first end of the tenth resistor respectively;

a second end of the tenth resistor is connected with a first end of the seventh diode;

a second end of the seventh diode is connected with the driving circuit;

a second terminal of the twelfth capacitor is grounded.

9. The dual power triggering system of claim 8, wherein the transient power supply circuit comprises: a thirteenth capacitor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a second light emitting diode;

the discharge circuit includes: a fourteenth resistance and a fifteenth resistance;

a first end of the thirteenth capacitor, a first end of the thirteenth resistor, a first end of the fourteenth resistor and a first end of the fifteenth resistor are respectively connected with the transient power supply;

a second end of the thirteenth capacitor is respectively connected with a first end of the eleventh resistor and a first end of the twelfth resistor;

the second end of the thirteenth resistor is connected with the first end of the second light-emitting diode;

a second end of the eleventh resistor, a second end of the twelfth resistor, a second end of the fourteenth resistor, a second end of the fifteenth resistor, and a second end of the second light emitting diode are all connected to the driving circuit.

10. The high voltage series thyristor dual supply triggering system of claim 9, wherein the triggering fiber assembly comprises: a fiber optic transceiver and a sixteenth resistor;

the drive circuit includes: a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a fourteenth capacitor, an eighth diode, a zener diode and an MOS transistor;

the first end of the optical fiber transceiver is respectively connected with the first end of the sixteenth resistor and the steady-state power supply;

a second end of the optical fiber transceiver is respectively connected with a second end of the sixteenth resistor and a first end of the driver;

the second end of the driver is respectively connected with the second end of the voltage stabilizing diode, the first end of the eighteenth resistor and the first end of the MOS tube through the seventeenth resistor;

a second end of the MOS transistor is connected to a second end of the seventh diode, a second end of the eleventh resistor, a second end of the twelfth resistor, a second end of the fourteenth resistor, a second end of the fifteenth resistor, and a second end of the second light emitting diode, respectively;

a third end of the MOS transistor is connected to a first end of the nineteenth resistor, a first end of the twentieth resistor, a first end of the fourteenth capacitor, and a first end of the eighth diode, respectively;

the second end of the eighth diode is connected with the second end of the silicon controlled interface;

the first end of the thyristor interface, the second end of the fourteenth capacitor, the second end of the twentieth resistor, the second end of the nineteenth resistor, the second end of the eighteenth resistor, the first end of the zener diode, the third end of the driver and the third end of the optical fiber transceiver are all grounded.

Technical Field

The invention relates to the technical field of silicon controlled rectifier triggering, in particular to a high-voltage series silicon controlled rectifier dual-power triggering system.

Background

With the rapid development of power electronic technology, a silicon controlled soft start device is produced. Thyristors are short for thyristors and may also be referred to as thyristors. The controllable silicon has the characteristics of a silicon rectifier device, can work under the conditions of high voltage and large current, can control the working process, and is widely applied to electronic circuits such as controllable rectification, alternating current voltage regulation, contactless electronic switches, inversion, frequency conversion and the like.

At present, in a high-voltage soft start silicon controlled rectifier trigger system, active driving is realized by supplying power to a silicon controlled rectifier trigger plate through a magnetic ring energy taking principle. The triggering of the high-voltage series silicon controlled rectifier needs to be triggered strongly, energy is usually taken by the fact that a high-voltage cable penetrates through a plurality of driving plate energy taking magnetic rings, energy taking voltage is uneven due to the fact that the magnetic rings are not consistent, and voltage stabilization is needed, so that designed original voltage (30V, dispersibility, 25-35V) is stabilized to target voltage (18V), and normal work of the high-voltage series silicon controlled rectifier after triggering is guaranteed.

However, in the prior art, after the 30V original voltage is stabilized to the 18V target voltage, the 18V power supply is used for supplying power, and the resistance power is large, so that the trigger power of the thyristor is large, and the energy waste is caused.

Disclosure of Invention

In view of this, the present invention provides a high-voltage series thyristor dual-power triggering system, so as to solve the problem in the prior art that after an original voltage of 30V is stabilized to a target voltage of 18V, a 18V power supply is used to supply power, and the resistance power is large, so that the triggering power of a thyristor is large, thereby causing energy waste.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-voltage series silicon controlled rectifier dual-power trigger system comprises: the power supply circuit comprises a full-bridge rectifier circuit, a voltage stabilizing circuit, a voltage conversion circuit, a trigger circuit, a steady-state power supply circuit, a transient power supply circuit and a silicon controlled interface;

the full-bridge rectifying circuit is connected with the voltage stabilizing circuit;

the voltage stabilizing circuit is respectively connected with the voltage conversion circuit and the transient power supply circuit;

the voltage conversion circuit is connected with the steady-state power supply circuit;

the transient state power supply circuit and the steady state power supply circuit are respectively connected with the trigger circuit;

the trigger circuit is connected with the controlled silicon through the controlled silicon interface;

the full-bridge rectifying circuit is used for rectifying the voltage in the high-voltage cable into original voltage;

the voltage stabilizing circuit is used for performing voltage stabilizing operation on the original voltage to obtain transient power supply voltage;

the voltage conversion circuit is used for performing voltage conversion on the transient state power supply voltage to obtain a steady state power supply voltage;

the transient power supply circuit is used for transmitting the transient power supply voltage to the trigger circuit, and the steady-state power supply circuit is used for transmitting the steady-state power supply voltage to the trigger circuit, so that the trigger circuit triggers the controllable silicon through the controllable silicon interface;

wherein the steady state supply voltage is less than the transient supply voltage.

Further, the high-voltage series silicon controlled rectifier dual-power triggering system also comprises a discharging circuit;

the discharge circuit is connected with the transient power supply circuit;

the discharge circuit is used for carrying out capacitance discharge operation on the transient power supply circuit before the thyristor is triggered each time so as to ensure the continuous work of the transient power supply circuit.

Further, in the above-mentioned high voltage series silicon controlled rectifier dual supply trigger system, the trigger circuit includes: the trigger optical fiber assembly, the driver and the driving circuit;

the triggering optical fiber assembly is connected with the driving circuit through the driver;

the driving circuit is respectively connected with the steady-state power supply circuit, the transient-state power supply circuit and the silicon controlled interface;

the triggering optical fiber assembly is used for transmitting a triggering signal sent by the main controller to the driver so that the driver triggers the controllable silicon connected with the controllable silicon interface through the driving circuit.

Further, in the high-voltage series silicon controlled rectifier dual-power triggering system, the voltage conversion circuit adopts a direct-current chopper circuit.

Further, in the above-mentioned high voltage series connection silicon controlled rectifier dual supply triggering system, the full-bridge rectifier circuit includes: the magnetic ring comprises a magnetic ring, a first diode, a second diode, a third diode, a fourth diode, a first capacitor and a second capacitor;

the first end of the magnetic ring is connected with the first end of the first diode and the second end of the second diode respectively;

the second end of the magnetic ring is respectively connected with the first end of the third diode and the second end of the fourth diode;

the second end of the first diode, the second end of the third diode, the first end of the first capacitor and the first end of the second capacitor are respectively connected with the first end of the voltage stabilizing circuit;

the first end of the second diode, the first end of the fourth diode, the second end of the first capacitor, the second end of the second capacitor and the second end of the voltage stabilizing circuit are all grounded.

Further, in the above-mentioned high voltage series silicon controlled rectifier dual supply trigger system, voltage stabilizing circuit includes: the circuit comprises a first chip, a fifth diode, a sixth diode, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor and a third resistor;

the first end of the first chip is respectively connected with the first end of the first resistor, the first end of the second resistor, the first end of the third capacitor, the first end of the third resistor and the first end of the sixth diode;

the second end of the first chip is respectively connected with the first end of the fifth diode, the second end of the third resistor, the second end of the sixth diode, the first end of the fourth capacitor and the first end of the fifth capacitor;

the original voltage generated by the full-bridge rectification circuit is input from the third end of the first chip, the second end of the first chip outputs the transient power supply voltage, the second end of the first chip is connected with a transient power supply corresponding to the transient power supply voltage, and the first end of the first chip is connected with the original power supply corresponding to the original voltage;

the third end of the first chip is respectively connected with the second end of the fifth diode, the second end of the first diode, the second end of the third diode, the first end of the first capacitor and the first end of the second capacitor;

the second end of the first resistor, the second end of the second resistor, the second end of the third capacitor, the second end of the fourth capacitor and the second end of the fifth capacitor are all grounded.

Further, in the above-mentioned high voltage series silicon controlled rectifier dual supply triggering system, the voltage conversion circuit includes: the LED chip comprises a second chip, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, an inductor and a first LED;

the first end of the second chip is connected with the fourth end of the second chip through the eighth capacitor;

the second end of the second chip and the first end of the sixth capacitor are both connected with the transient power supply;

the third end of the second chip is respectively connected with the first end of the fourth resistor, the first end of the fifth resistor and the first end of the seventh capacitor;

the second end of the fourth resistor is connected with the original power supply;

a fourth end of the second chip is connected to the first end of the sixth resistor, the first end of the ninth capacitor, the first end of the tenth capacitor, the first end of the eleventh capacitor, and the first end of the eighth resistor through the inductor, respectively;

the fourth end of the second chip outputs the steady-state power supply voltage through the inductor, and the fourth end of the second chip is connected with a steady-state power supply corresponding to the steady-state power supply voltage through the inductor;

a fifth end of the second chip is connected with a second end of the sixth resistor, a first end of the seventh resistor and a second end of the ninth capacitor respectively;

a second end of the eighth resistor is connected with a first end of the first light emitting diode;

the second end of the sixth capacitor, the second end of the fifth resistor, the second end of the seventh capacitor, the sixth end of the second chip, the second end of the seventh resistor, the second end of the tenth capacitor, the second end of the eleventh capacitor, and the second end of the first light emitting diode are all grounded.

Further, in the above-mentioned high voltage series thyristor dual supply triggering system, the steady state power supply circuit includes: a ninth resistor, a tenth resistor, a twelfth capacitor and a seventh diode;

the first end of the ninth resistor is connected with the steady-state power supply;

a second end of the ninth resistor is connected with a first end of the twelfth capacitor and a first end of the tenth resistor respectively;

a second end of the tenth resistor is connected with a first end of the seventh diode;

a second end of the seventh diode is connected with the driving circuit;

a second terminal of the twelfth capacitor is grounded.

Further, in the above-mentioned high voltage series silicon controlled rectifier dual supply triggering system, the transient state power supply circuit includes: a thirteenth capacitor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a second light emitting diode;

the discharge circuit includes: a fourteenth resistance and a fifteenth resistance;

a first end of the thirteenth capacitor, a first end of the thirteenth resistor, a first end of the fourteenth resistor and a first end of the fifteenth resistor are respectively connected with the transient power supply;

a second end of the thirteenth capacitor is respectively connected with a first end of the eleventh resistor and a first end of the twelfth resistor;

the second end of the thirteenth resistor is connected with the first end of the second light-emitting diode;

a second end of the eleventh resistor, a second end of the twelfth resistor, a second end of the fourteenth resistor, a second end of the fifteenth resistor, and a second end of the second light emitting diode are all connected to the driving circuit.

Further, in the above-mentioned high voltage series connection silicon controlled rectifier dual supply trigger system, the trigger optical fiber subassembly includes: a fiber optic transceiver and a sixteenth resistor;

the drive circuit includes: a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a fourteenth capacitor, an eighth diode, a zener diode and an MOS transistor;

the first end of the optical fiber transceiver is respectively connected with the first end of the sixteenth resistor and the steady-state power supply;

a second end of the optical fiber transceiver is respectively connected with a second end of the sixteenth resistor and a first end of the driver;

the second end of the driver is respectively connected with the second end of the voltage stabilizing diode, the first end of the eighteenth resistor and the first end of the MOS tube through the seventeenth resistor;

a second end of the MOS transistor is connected to a second end of the seventh diode, a second end of the eleventh resistor, a second end of the twelfth resistor, a second end of the fourteenth resistor, a second end of the fifteenth resistor, and a second end of the second light emitting diode, respectively;

a third end of the MOS transistor is connected to a first end of the nineteenth resistor, a first end of the twentieth resistor, a first end of the fourteenth capacitor, and a first end of the eighth diode, respectively;

the second end of the eighth diode is connected with the second end of the silicon controlled interface;

the first end of the thyristor interface, the second end of the fourteenth capacitor, the second end of the twentieth resistor, the second end of the nineteenth resistor, the second end of the eighteenth resistor, the first end of the zener diode, the third end of the driver and the third end of the optical fiber transceiver are all grounded.

A high-voltage series silicon controlled rectifier dual-power trigger system comprises: the power supply circuit comprises a full-bridge rectifier circuit, a voltage stabilizing circuit, a voltage conversion circuit, a trigger circuit, a steady-state power supply circuit, a transient power supply circuit and a silicon controlled interface; the full-bridge rectifying circuit is connected with the voltage stabilizing circuit; the voltage stabilizing circuit is respectively connected with the voltage conversion circuit and the transient power supply circuit; the voltage conversion circuit is connected with the steady-state power supply circuit; the transient power supply circuit and the steady-state power supply circuit are respectively connected with the trigger circuit; the trigger circuit is connected with the controlled silicon through the controlled silicon interface; the full-bridge rectifying circuit is used for rectifying the voltage in the high-voltage cable into original voltage; the voltage stabilizing circuit is used for performing voltage stabilizing operation on the original voltage to obtain a transient power supply voltage; the voltage conversion circuit is used for performing voltage conversion on the transient power supply voltage to obtain a steady-state power supply voltage; the transient power supply circuit is used for transmitting transient power supply voltage to the trigger circuit, and the steady-state power supply circuit is used for transmitting steady-state power supply voltage to the trigger circuit so that the trigger circuit triggers the controllable silicon through the controllable silicon interface; wherein the steady state supply voltage is less than the transient state supply voltage. By adopting the technical scheme of the invention, the transient power supply voltage can be converted into the steady-state power supply voltage with smaller voltage through the voltage conversion circuit, the dual-power mode of the trigger circuit is realized by utilizing the transient power supply voltage and the steady-state power supply voltage, the steady-state power supply voltage smaller than the transient power supply voltage supplies power for the trigger circuit, and the resistance power in the trigger circuit can be reduced, so that the overall trigger power can be reduced, and the energy conservation is realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of a circuit provided in one embodiment of a high voltage series thyristor dual power supply triggering system of the present invention;

FIG. 2 is a circuit diagram of the full bridge rectifier circuit and the voltage regulator circuit of FIG. 1;

FIG. 3 is a circuit diagram of the voltage conversion circuit of FIG. 1;

fig. 4 is a circuit diagram of the transient power supply circuit, the steady state power supply circuit, the trigger circuit, and the discharge circuit of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Fig. 1 is a circuit block diagram provided by an embodiment of the high-voltage series thyristor dual-power-supply triggering system of the invention, as shown in fig. 1, the high-voltage series thyristor dual-power-supply triggering system of the embodiment includes: the circuit comprises a full-bridge rectification circuit 101, a voltage stabilizing circuit 102, a voltage conversion circuit 103, a steady-state power supply circuit 105, a transient power supply circuit 104, a trigger circuit 106 and a thyristor interface 107. The full-bridge rectification circuit 101 is connected with the voltage stabilizing circuit 102; the voltage stabilizing circuit 102 is respectively connected with the voltage conversion circuit 103 and the transient power supply circuit 104; the voltage conversion circuit 103 is connected with the steady-state power supply circuit 105; the steady-state power supply circuit 105 and the transient power supply circuit 104 are respectively connected with the trigger circuit 106; the trigger circuit 106 is connected to the thyristor 30 through a thyristor interface 106.

In this embodiment, the full-bridge rectification circuit 101 may rectify the voltage in the high-voltage cable into an original voltage, and the voltage stabilizing circuit 102 performs a voltage stabilizing operation on the original voltage to output a transient power supply voltage. The voltage conversion circuit 103 may perform voltage conversion on the transient supply voltage to output a steady-state supply voltage. The transient power supply circuit 104 may transmit the transient power supply voltage output by the stabilizing circuit 102 to the trigger circuit 106, so as to supply power to the trigger circuit 106; the steady-state power supply circuit 105 may also transmit the steady-state power supply voltage output by the voltage conversion circuit 103 to the trigger circuit 106 to power the trigger circuit 106. Through the above-mentioned power supply operations of the transient power supply voltage and the steady power supply voltage, the trigger circuit 106 may obtain the trigger signal sent by the master controller 20 and trigger the thyristor 30 connected to the thyristor interface 107. Wherein the steady state supply voltage is less than the transient state supply voltage.

In the embodiment, the original voltage is preferably 30V, but the original voltage has dispersion, the range is 25-35V, the transient power supply voltage is preferably 18V, and the steady-state power supply voltage is preferably 5V.

In this embodiment, the trigger circuit is powered by the steady-state power supply circuit and the transient-state power supply circuit, so that a dual-power mode of the trigger circuit can be realized, the transient-state power supply circuit only provides transient-state current corresponding to the transient-state power supply voltage, and the steady-state power supply circuit can provide steady-state current corresponding to the steady-state power supply voltage. The steady-state power supply voltage is smaller than the transient-state power supply voltage, so that the trigger circuit is powered by the steady-state power supply voltage. For example, the supply voltage of 18V differs from the resistance power corresponding to the supply voltage of 5V by a factor of approximately 3.6, and the trigger power may be reduced from 10W to 3W. In this embodiment, in a 10kV high-voltage soft-start thyristor system, 10 thyristor units are preferably arranged in each phase of the assembly, so that each thyristor needs to be correspondingly provided with the dual-power-supply triggering system of the high-voltage series thyristor of this embodiment, each dual-power-supply triggering system of the high-voltage series thyristor unit can reduce power consumption by 60%, and the energy-saving effect is obvious, thereby reducing the capacity of the high-frequency power supply.

Further, the high-voltage series thyristor dual-power-supply triggering system of the embodiment further includes a discharge circuit 108, and the discharge circuit 108 is connected to the transient power supply circuit 104. Each thyristor 30 is triggered for 4ms within 10ms of a cycle, and before each thyristor 30 is triggered, the discharge circuit 108 needs to perform a capacitor discharge operation on the transient power supply circuit 104, so as to ensure the continuous operation of the transient power supply circuit 104.

Further, in the high voltage series thyristor dual power triggering system of the present embodiment, the triggering circuit 106 includes: a trigger fiber assembly 1061, a driver 1062, and a driver circuit 1063. The trigger fiber assembly 1061 is connected to the driver circuit 1063 via a driver 1062; the driving circuit 1063 is connected to the steady-state power supply circuit 105, the transient power supply circuit 104, and the thyristor interface 107, respectively. The trigger fiber assembly 1061 may transmit a trigger signal from the master 20 to the driver 1062, so that the driver 1062 triggers the thyristor 30 connected to the thyristor interface 107 via the driver circuit 1063. The steady-state power supply circuit 105 and the transient power supply circuit 104 supply power to the driving circuit 1063, so as to trigger the thyristor 30.

Further, in the high-voltage series silicon controlled rectifier dual-power-supply triggering system of this embodiment, the voltage conversion circuit 103 preferably employs a DC chopper circuit, and a chopper DC-DC mode employed by the DC chopper circuit is higher in efficiency than a 5V power supply of a linear regulator in the prior art, and can improve stability of a dual-power-supply mode of a transient power supply voltage and a steady-state power supply voltage in this embodiment.

Fig. 2 is a circuit diagram of the full-bridge rectifier circuit and the voltage stabilizing circuit in fig. 1, and as shown in fig. 2, in the high-voltage series thyristor dual-power triggering system of the present embodiment, the full-bridge rectifier circuit 101 includes: the magnetic loop T, the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the first capacitor C1 and the second capacitor C2; the voltage stabilizing circuit 102 includes: the circuit comprises a first chip U1, a fifth diode D5, a sixth diode D6, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first resistor R1, a second resistor R2 and a third resistor R3. The first capacitor C1 and the fourth capacitor C4 are both polar capacitors, and the first chip U1 is a linear regulator, preferably LM317 BGT.

A first end of the magnetic ring T is connected with a first end of a first diode D1 and a second end of a second diode D2 respectively; a second end of the magnetic loop T is respectively connected with a first end of a third diode D3 and a second end of a fourth diode D4; the second end of the first diode D1, the second end of the third diode D3, the first end of the first capacitor C1 and the first end of the second capacitor C2 are respectively connected to the first end of the third terminal (pin VIN) of the first chip U1; the first terminal of the second diode D2, the first terminal of the fourth diode D4, the second terminal of the first capacitor C1, and the second terminal of the second capacitor C2 are all grounded.

A first end (pin ADJ) of the first chip U1 is connected to a first end of the first resistor R1, a first end of the second resistor R2, a first end of the third capacitor C3, a first end of the third resistor R3, and a first end of the sixth diode D6, respectively; a second terminal (pin VOUT) of the first chip U1 is respectively connected to a first terminal of a fifth diode D5, a second terminal of a third resistor R3, a second terminal of a sixth diode D6, a first terminal of a fourth capacitor C4 and a first terminal of a fifth capacitor C5; the original voltage generated by the full-bridge rectifier circuit 101 is input from the third terminal (pin VIN) of the first chip U1, the second terminal (pin VOUT) of the first chip U1 outputs the transient power supply voltage, the second terminal (pin VOUT) of the first chip U1 is connected to the transient power supply (Vcc2) corresponding to the transient power supply voltage, and the first terminal (pin ADJ) of the first chip U1 is connected to the original power supply (Vcc20) corresponding to the original voltage; the third terminal (pin VIN) of the first chip U1 is further connected to the second terminal of the fifth diode D5; the second end of the first resistor R1, the second end of the second resistor R2, the second end of the third capacitor C3, the second end of the fourth capacitor C4 and the second end of the fifth capacitor C5 are all grounded.

YH1 in FIG. 2 is an electronic radiator, and the model preferably adopts SRX-YK 25.

Fig. 3 is a circuit diagram of the voltage conversion circuit in fig. 1, and as shown in fig. 3, in the high-voltage series thyristor dual-power-supply triggering system of the present embodiment, the voltage conversion circuit 103 includes: the LED driving circuit comprises a second chip U2, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, an inductor L and a first light-emitting diode LD 1. The second chip U2 is a DC-DC converter, and the model preferably adopts SY8301 ABC.

The first terminal (pin BS) of the second chip U2 is connected to the fourth terminal (pin LX) of the second chip U2 through an eighth capacitor C8; the second end (pin IN) of the second chip U2 and the first end of the sixth capacitor C6 are both connected with a transient power supply (Vcc 2); the third end (pin EN) of the second chip U2 is respectively connected with the first end of the fourth resistor R4, the first end of the fifth resistor R5 and the first end of the seventh capacitor C7; a second end of the fourth resistor R4 is connected with a primary power supply (VCC 20); a fourth terminal (pin LX) of the second chip U2 is connected to the first terminal of the sixth resistor R6, the first terminal of the ninth capacitor C9, the first terminal of the tenth capacitor C10, the first terminal of the eleventh capacitor C11 and the first terminal of the eighth resistor R8 through the inductor L, respectively; the fourth terminal (pin LX) of the second chip U2 outputs a steady-state power supply voltage through the inductor L, so that the fourth terminal (pin LX) of the second chip U2 is connected with a steady-state power supply (5V) corresponding to the steady-state power supply voltage through the inductor L; a fifth terminal (pin FB) of the second chip U2 is respectively connected to the second terminal of the sixth resistor R6, the first terminal of the seventh resistor R7, and the second terminal of the ninth capacitor C9; a second end of the eighth resistor R8 is connected to the first end of the first light emitting diode LD 1; the second end of the sixth capacitor C6, the second end of the fifth resistor R5, the second end of the seventh capacitor C7, the sixth end (pin GND) of the second chip U2, the second end of the seventh resistor R7, the second end of the tenth capacitor C10, the second end of the eleventh capacitor C11, and the second end of the first light emitting diode LD1 are all grounded.

Fig. 4 is a circuit diagram of the transient power supply circuit, the steady state power supply circuit, the trigger circuit, and the discharge circuit of fig. 1. As shown in fig. 4, in the high voltage series thyristor dual power triggering system of the present embodiment, the steady-state power supply circuit 105 includes: a ninth resistor R9, a tenth resistor R10, a twelfth capacitor C12 and a seventh diode D7; the transient power supply circuit 104 includes: a thirteenth capacitor C13, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13 and a second light emitting diode LD 2; the discharge circuit 108 includes: a fourteenth resistor R14 and a fifteenth resistor R15. The trigger fiber assembly 1061 includes: a fiber optic transceiver FR and a sixteenth resistor R16; the driver circuit 1063 includes: a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a fourteenth capacitor C14, an eighth diode D8, a zener diode DZ and a MOS transistor Q. The chip U3 is a driver 1062, and the model is preferably IXDF602 SIA. The twelfth capacitor C12 is a polar capacitor.

A first end of the ninth resistor R9 is connected with a steady-state power supply (5V); a second end of the ninth resistor R9 is connected to a first end of the twelfth capacitor C12 and a first end of the tenth resistor R10, respectively; a second terminal of the tenth resistor R10 is connected to a first terminal of a seventh diode D7; a second end of the seventh diode D7 is connected with a second end of the MOS transistor Q; a second terminal of the twelfth capacitor C12 is connected to ground.

A first end of a thirteenth capacitor C13, a first end of a thirteenth resistor R13, a first end of a fourteenth resistor R14 and a first end of a fifteenth resistor R15 are respectively connected with a transient power supply (Vcc 2); a second end of the thirteenth capacitor C13 is connected to a first end of the eleventh resistor R11 and a first end of the twelfth resistor R12, respectively; a second end of the thirteenth resistor R13 is connected to the first end of the second light emitting diode LD 2; a second end of the eleventh resistor R11, a second end of the twelfth resistor R12, a second end of the fourteenth resistor R14, a second end of the fifteenth resistor R15 and a second end of the second light emitting diode LD2 are all connected to the second end of the MOS transistor Q. The fourteenth resistor R14 and the fifteenth resistor R15 are used as discharge circuits, and can discharge the thirteenth capacitor C13 before each thyristor trigger.

The first end of the fiber-optic transceiver FR is respectively connected with the first end of a sixteenth resistor R16 and a steady-state power supply (5V); the second end of the fiber-optic transceiver FR is connected to the sixteenth resistor R16Two ends are connected to a first end (pin INA) of the driver 1062; second end (pin) of driver 1062) The first end of an eighteenth resistor R18 and the first end of the MOS transistor Q are respectively connected with the second end of the voltage stabilizing diode DZ through a seventeenth resistor R17; the third end of the MOS transistor Q is connected to the first end of the nineteenth resistor R19, the first end of the twentieth resistor R20, the first end of the fourteenth capacitor C14 and the first end of the eighth diode D8, respectively; a second terminal of the eighth diode D8 is connected to a second terminal of the thyristor interface 107; the first terminal of the scr interface 107, the second terminal of the fourteenth capacitor C14, the second terminal of the twentieth resistor R20, the second terminal of the nineteenth resistor R19, the second terminal of the eighteenth resistor R18, the first terminal of the zener diode DZ, the third terminal (pin GND and pin INB) of the driver 1062, and the third terminal of the fiber optic transceiver FR are all grounded.

In addition, the pin VCC of the driver 1062 is connected to the transient power supply (VCC2) and the first terminal of the fifteenth capacitor C15, respectively, and the second terminal of the fifteenth capacitor C15 is grounded. The first end of the sixteenth capacitor C16 and the first end of the seventeenth capacitor C17 are both connected with a steady-state power supply (5V), and the second end of the sixteenth capacitor C16 and the second end of the seventeenth capacitor C17 are both grounded.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.