CN217469910U - Repetition frequency pulse laser power supply circuit - Google Patents
Repetition frequency pulse laser power supply circuit Download PDFInfo
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- CN217469910U CN217469910U CN202221485952.3U CN202221485952U CN217469910U CN 217469910 U CN217469910 U CN 217469910U CN 202221485952 U CN202221485952 U CN 202221485952U CN 217469910 U CN217469910 U CN 217469910U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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Abstract
The utility model discloses a repetition frequency pulse laser power circuit, which comprises a control unit, a trigger detection unit, a waveform acquisition unit, a charging unit and an energy storage discharging unit; the control unit is respectively connected with the trigger detection unit, the waveform acquisition unit, the charging unit and the energy storage discharging unit, and the energy storage discharging unit is respectively connected with the trigger detection unit, the waveform acquisition unit and the charging unit; the energy storage discharge circuit comprises an isolation diode Di, an energy storage capacitor Ci, a solid discharge switch Ki, a wave modulation inductor Li, a xenon lamp pre-burning power supply, a discharge cable TLi and a xenon lamp load. The utility model discloses an keep apart parallelly connected many energy storage circuit that discharges for repetition frequency pulse power supply has the reliability height, discharges the advantage that return circuit uniformity is high and the security is high.
Description
Technical Field
The utility model belongs to the technical field of repetition frequency pulse power, concretely relates to repetition frequency pulse power laser power supply circuit.
Background
The repetition frequency pulse power technology is widely applied to military fields such as nuclear fusion, strong laser, high-power microwave, electron beam accelerator and the like, and civil fields such as flue gas treatment, pulse discharge plasma desulfurization and denitration and the like. The repetition frequency pulse laser power supply is an important component in the repetition frequency pulse power technology, and provides enough energy for a pulse xenon lamp load, so that the output of laser is realized.
In the pulse laser power supply in the prior art, a single-path semiconductor discharge switch is usually adopted, and multi-path pulse energy output is realized in a multi-path wave-regulating inductor mode. However, because the repetition frequency pulse laser power supply works in a multi-pulse mode under the repetition frequency, the temperature of the device is continuously increased along with the continuous accumulation of the heat of the discharge switch in the circuit, so that the discharge switch runs under the conditions of high temperature and high voltage for a long time, and the integral reliability and the service life of the power supply are greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a repetition frequency pulse power laser power supply circuit for solve the discharge switch long-term operation among the prior art under high temperature and high-pressure condition, and then greatly reduced the holistic reliability of power and running life's technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a repetition frequency pulse laser power circuit, which comprises a control unit, a trigger detection unit, a waveform acquisition unit, a charging unit and an energy storage discharging unit;
the control unit is respectively connected with the trigger detection unit, the waveform acquisition unit, the charging unit and the energy storage discharging unit, and the energy storage discharging unit is respectively connected with the trigger detection unit, the waveform acquisition unit and the charging unit;
the energy storage discharge unit at least comprises a group of energy storage discharge circuits, each group of energy storage discharge circuits comprises an isolation diode, the positive end of the isolation diode Di is connected with the first output end of the charge unit, the negative end of the isolation diode Di is respectively connected with the positive end of a solid discharge switch Ki and one end of an energy storage capacitor Ci, the negative end of the solid discharge switch Ki is connected with one end of a wave modulation inductor Li, the other end of the wave modulation inductor Li is respectively connected with the positive electrode of a xenon lamp pre-burning power supply and one end of a discharge cable TLi, one end of the discharge cable TLi is further connected with the second output end of the charge unit and then grounded, the negative electrode of the xenon lamp pre-burning power supply and the other end of the energy storage capacitor Ci are both grounded, and the other end of the discharge cable TLi is connected with a xenon lamp load.
In one possible design, the energy storage discharge unit further includes at least a bleeder circuit, and the bleeder circuit includes a bleeder switch Kr connected in parallel to the two output terminals of the charging unit, and a resistor Ri connected in parallel to the two terminals of the isolation diode Di.
In one possible design, the isolation diode Di is a high voltage diode having an inverted repetition peak voltage twice the operating voltage of the entire repetition frequency pulsed laser power supply.
In one possible design, the solid discharge switch Ki comprises a single thyristor plate.
In one possible design, the energy storage capacitor Ci comprises a metallized film capacitor.
In one possible design, the wave-modulating inductor Li is formed by winding a copper core coil, and the inductance value of the wave-modulating inductor Li is adjustable.
In one possible design, the trigger voltage of the xenon lamp pre-burning power supply is 20000V, and the constant current is 150 mA.
In one possible design, the xenon lamp load comprises several pulsed xenon lamps.
In one possible design, the bleed switch Kr comprises a high voltage vacuum relay.
Has the advantages that: the utility model discloses an independently set up the solid discharge switch Ki of a small capacity in every energy storage discharge circuit of group, can reduce the operating current of solid discharge switch Ki for each energy storage discharge circuit of group can the autonomous working, improves circuit independence and reliability, simultaneously, adopts independent solid discharge switch Ki, can reduce the operation requirement of single energy storage discharge circuit to the device, reduces the cost of single energy storage discharge circuit. By independently arranging the energy storage capacitor Ci in each group of energy storage discharge circuits, the influence of inconsistent output energy caused by the error of the echo wave modulation inductance Li is reduced, and the energy consistency of each group of energy storage discharge circuits is improved. The isolation diodes are arranged in each energy storage discharge circuit to isolate each energy storage discharge circuit, so that when a single energy storage discharge circuit breaks down, the work of other loops is not influenced, and the overall reliability of the repetition frequency pulse laser power supply is improved.
Drawings
Fig. 1 is a block diagram of a circuit configuration of a repetition frequency pulse laser power supply circuit in the present embodiment;
fig. 2 is a schematic circuit diagram of the energy storage discharge unit in this embodiment.
1-a control unit; 2-trigger the detection unit; 3-a waveform acquisition unit; 4-a charging unit; 5-an energy storage discharge unit; 6-a tank discharge circuit; 7-bleeder circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any creative effort belong to the protection scope of the present invention.
Examples
As shown in fig. 1 and fig. 2, the present embodiment provides a repetition frequency pulse laser power circuit, which includes a control unit 1, a trigger detection unit 2, a waveform acquisition unit 3, a charging unit 4, and an energy storage discharging unit 5;
the control unit 1 is respectively connected with the trigger detection unit 2, the waveform acquisition unit 3, the charging unit 4 and the energy storage discharging unit 5, and the energy storage discharging unit 5 is respectively connected with the trigger detection unit 2, the waveform acquisition unit 3 and the charging unit 4;
the energy storage discharge unit 5 at least comprises a group of energy storage discharge circuits 6, each group of energy storage discharge circuits 6 comprises an isolation diode, the positive end of the isolating diode Di is connected with the first output end of the charging unit 4, the negative end of the isolating diode Di is respectively connected with the positive end of the solid discharge switch Ki and one end of the energy storage capacitor Ci, the negative end of the solid discharge switch Ki is connected with one end of a wave regulating inductor Li, the other end of the wave regulating inductor Li is respectively connected with the anode of the xenon lamp pre-burning power supply and one end of a discharge cable TLi, one end of the discharging cable TLi is also connected to the second output terminal of the charging unit 4 and then grounded, the negative electrode of the xenon lamp pre-burning power supply and the other end of the energy storage capacitor Ci are grounded, the other end of the discharge cable TLi is connected with a xenon lamp load, and preferably, the xenon lamp load comprises a plurality of pulse xenon lamps.
Note that, in the present embodiment, it is preferable that 10 sets of tank discharge circuits 6 are provided, that is, i is 1, 2. Of course, it is understood that the number of the energy storage discharge circuits 6 may be set according to the practical application requirement, and is not limited herein.
In a specific embodiment, in order to control the start and the end of a single work task of the entire repetition frequency pulse laser power supply, the energy storage discharge unit 5 further comprises at least a discharge circuit 7, wherein the discharge circuit 7 comprises a discharge switch Kr connected in parallel to two output terminals of the charging unit 4 and a resistor Ri connected in parallel to two ends of the isolation diode Di; the discharge switch Kr is configured to receive a control signal of the controller to open or close, and when the discharge switch Kr is opened, the controller controls the charging unit 4 to charge the energy storage charger, and when the discharge switch Kr is closed, and when the secondary power supply task is finished, preferably, the discharge switch Kr includes a high-voltage vacuum relay, and the high-voltage vacuum relay has a withstand voltage margin of 2 times; at least one resistor Ri is arranged, and each resistor Ri is correspondingly connected in parallel at two ends of each isolation diode Di.
In a specific embodiment, in order to isolate the conduction of the unidirectional voltage of the charging unit 4 and avoid affecting the normal operation of other circuits when a single energy storage discharge circuit fails, the isolation diode Di adopts a high-voltage diode, and the reverse repetition peak voltage of the high-voltage diode is twice of the working voltage of the whole repetition frequency pulse laser power supply.
In a specific embodiment, in order to reduce the operating current of the solid discharge switch Ki so that each discharge circuit can operate independently, the solid discharge switch Ki includes a single thyristor valve plate, and the withstand voltage margin of the thyristor valve plate is 1.5 times.
In a specific embodiment, in order to improve the working life of the energy storage capacitor Ci and prolong the service life of the device, the energy storage capacitor Ci comprises a metallized film capacitor, and the working life of the metallized film capacitor is more than 300 ten thousand times.
In a specific embodiment, in order to meet the requirement of the discharge circuit for outputting the discharge current waveform, the wave modulating inductor Li is formed by winding a copper core coil, the inductance value of the wave modulating inductor Li is adjustable, and the current capacity of the wave modulating inductor Li is 1.5 times of the maximum fault current.
In a specific embodiment, in order to maintain the continuous ignition of the xenon lamp load, the trigger voltage of the xenon lamp pre-ignition power supply is 20000V, and a constant current of 150mA can be provided.
In this embodiment, the specific working principle of the repetition frequency pulse laser power supply circuit is as follows:
firstly, the control unit 1 sets the charging parameters of the charging unit 4 according to the set parameters of charging voltage, charging frequency and the like, the control unit 1 controls the discharge switch Kr to be switched off, after receiving a feedback signal of the switching off of the discharge switch Kr, the control unit 1 controls all xenon lamp pre-burning power supplies of the energy storage discharge unit 5 to start and pre-burn, after the xenon lamp pre-burning power supplies are started, a high-voltage pulse not less than 12kV is firstly sent out to trigger a xenon lamp load, and after the xenon lamp load is triggered to be switched on, the xenon lamp pre-burning power supplies provide 150mA constant current stable direct current for the xenon lamp load to maintain the continuous ignition of the xenon lamp.
Secondly, when the control unit 1 monitors that xenon lamps of all the energy storage discharge circuits 6 are pre-ignited, the control unit 4 is controlled to start and charge, the charging unit 4 charges the energy storage capacitors Ci through the isolating diodes Di connected with the energy storage capacitors Ci, when the charging voltage of the energy storage capacitors Ci reaches a preset value, the control power supply controls the charging unit 4 to stop charging, and sends out trigger signals to the trigger detection unit 2 according to a set frequency to provide synchronous trigger signals for the discharge switches of all the energy storage discharge circuits 6, so that all the solid discharge switches Ki are triggered to be switched on synchronously.
Then, after the solid discharge switch Ki is turned on, the energy storage capacitor Ci discharges the xenon lamp through the solid discharge switch Ki, the wave modulation inductor Li and the discharge cable TLi, so as to provide sufficient energy for the xenon lamp load. Meanwhile, the trigger detection unit 2 detects the voltage of the energy storage capacitor Ci after discharge, the waveform acquisition unit 3 detects the discharge current of the xenon lamp and sends a detection result to the control unit 1, when the control unit 1 analyzes that the discharge is normal and has no fault and the energy storage capacitors Ci of the energy storage discharge circuits 6 are lower than 100V, the control unit 4 is controlled to continue to charge the energy storage capacitor Ci and enter the next charge-discharge process, when the fault does not exist in the charge-discharge process of the repetition frequency pulse power supply, the charge-discharge process is continued until the number of the repeated charge-discharge times reaches a preset value, the charge unit 4 is automatically shut down, the control unit 1 controls the xenon lamp pre-combustion power supply to be closed, and the repetition frequency pulse power supply completes a single work task.
Based on the above disclosure, in this embodiment, by independently setting a small-capacity solid discharge switch Ki in each group of energy storage discharge circuits 6, the working current of the solid discharge switch Ki can be reduced, so that each group of energy storage discharge circuits 6 can independently work, and the circuit independence and reliability are improved, and meanwhile, by using the independent solid discharge switch Ki, the use requirement of a single energy storage discharge circuit 6 on the device can be reduced, and the cost of the single energy storage discharge circuit 6 is reduced. By independently arranging the energy storage capacitor Ci in each group of energy storage discharge circuits 6, the influence of inconsistent output energy caused by the error of the wave modulation inductance Li of each loop is reduced, and the energy consistency of each group of energy storage discharge circuits 6 is improved. Each energy storage and discharge circuit 6 is isolated by arranging an isolation diode in each energy storage and discharge circuit 6, so that when a single energy storage and discharge circuit 6 breaks down, the work of other loops is not influenced, and the overall reliability of the repetition frequency pulse laser power supply is improved.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A repetition frequency pulse laser power circuit is characterized by comprising a control unit (1), a trigger detection unit (2), a waveform acquisition unit (3), a charging unit (4) and an energy storage discharging unit (5);
the control unit (1) is respectively connected with the trigger detection unit (2), the waveform acquisition unit (3), the charging unit (4) and the energy storage discharging unit (5), and the energy storage discharging unit (5) is respectively connected with the trigger detection unit (2), the waveform acquisition unit (3) and the charging unit (4);
the energy storage discharge unit (5) at least comprises a group of energy storage discharge circuits (6), each group of energy storage discharge circuits (6) comprises an isolation diode Di, the forward end of the isolation diode Di is connected to a first output end of the charging unit (4), the negative end of the isolating diode Di is respectively connected with the positive end of the solid discharge switch Ki and one end of the energy storage capacitor Ci, the negative end of the solid discharge switch Ki is connected with one end of a wave regulating inductor Li, the other end of the wave regulating inductor Li is respectively connected with the anode of the xenon lamp pre-burning power supply and one end of a discharge cable TLi, one end of the discharge cable TLi is also connected to the second output terminal of the charging unit (4) and then grounded, the cathode of the xenon lamp pre-burning power supply and the other end of the energy storage capacitor Ci are both grounded, and the other end of the discharge cable TLi is connected with a xenon lamp load.
2. The repetition frequency pulsed laser power supply circuit according to claim 1, characterized in that the energy storage discharge unit (5) further comprises at least a bleeder circuit (7), and the bleeder circuit (7) comprises a bleeder switch Kr connected in parallel across the output terminals of the charging unit (4) and a resistor Ri connected in parallel across the isolation diode Di.
3. The repetition frequency pulsed laser power supply circuit according to claim 1, wherein the isolation diode Di is a high voltage diode having an inverted repetition peak voltage of at least twice the operating voltage of the entire repetition frequency pulsed laser power supply.
4. The repetition rate pulsed laser power supply circuit of claim 1, wherein said solid discharge switch Ki comprises a single thyristor valve plate.
5. The repetition rate pulsed laser power supply circuit of claim 1, wherein the storage capacitor Ci comprises a metallized film capacitor.
6. The repetition frequency pulsed laser power supply circuit according to claim 1, wherein the wave-modulating inductor Li is formed by winding a copper core coil, and an inductance value of the wave-modulating inductor Li is adjustable.
7. The repetition rate pulse laser power supply circuit of claim 1, wherein the trigger voltage of the xenon lamp pre-burning power supply is 20000V, and the constant current is 150 mA.
8. The repetition rate pulsed laser power supply circuit of claim 1, wherein the xenon lamp load comprises a plurality of pulsed xenon lamps.
9. The repetition frequency pulsed laser power supply circuit of claim 2, wherein said bleed-off switch Kr comprises a high voltage vacuum relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221485952.3U CN217469910U (en) | 2022-06-13 | 2022-06-13 | Repetition frequency pulse laser power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221485952.3U CN217469910U (en) | 2022-06-13 | 2022-06-13 | Repetition frequency pulse laser power supply circuit |
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| Publication Number | Publication Date |
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| CN217469910U true CN217469910U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221485952.3U Active CN217469910U (en) | 2022-06-13 | 2022-06-13 | Repetition frequency pulse laser power supply circuit |
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| CN (1) | CN217469910U (en) |
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2022
- 2022-06-13 CN CN202221485952.3U patent/CN217469910U/en active Active
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