Pulse generator, control method, computer device and computer-readable storage medium

Abstract

The application discloses a heavy frequency pulse generator, a control method, computer equipment and a computer readable storage medium, and belongs to the technical field of pulse power. The heavy frequency pulse generator comprises a charging power supply, a capacitor, a solid-state switch, a load and a control device; the positive electrode of the capacitor is connected with the positive electrode of the charging power supply, the negative electrode of the capacitor is connected with the negative electrode of the charging power supply, the inlet end of the solid-state switch is connected with the positive electrode of the capacitor, the outlet end of the solid-state switch is connected with the load in series and the negative electrode of the capacitor; and the control device is connected with the charging power supply and the solid-state switch respectively. The application can improve the precision of the heavy frequency pulse by setting the solid-state switch, the capacitor and the control device, and realizes the purposes of low dispersion, heavy frequency function and long service life of the switch based on the solid-state switch.

Description

Technical Field

[0001] This application belongs to the field of high-power power electronics technology, specifically relating to a high-repetition-rate pulse generator, a control method, a computer device, and a computer-readable storage medium. Background Technology

[0002] A pulsed power device that uses a capacitor as an energy storage element and controls its switching on via a solid-state switch has the following equivalent circuit: Figure 1 As shown, after pre-charging the energy storage capacitor, closing the discharge switch creates a second-order LC oscillation. The equivalent circuit output is a gradually decaying sine wave. In the field of pulsed power sources, the first positive half-wave of the decaying sine wave is the effective waveform. Furthermore, because applications such as controlled nuclear fusion require pulsed power sources to have high repetition rate, large peak current, and high di / dt waveforms, traditional pulsed power source switching devices, based on ignition tubes, thyristors, spark switches, etc., have limited turn-on life and different repetition rate capabilities, thus restricting the application of pulsed power sources. Summary of the Invention

[0003] Purpose of the invention: This application provides a high-repetition-rate pulse generator, a control method, a computer device, and a computer-readable storage medium, which can solve the problems of limited turn-on life of traditional pulse power source switching devices and the limitation of pulse power source applications due to differences in repetition-rate function.

[0004] Technical solution: This application provides a high-repetition-rate pulse generator, including: a charging power supply, a capacitor, a solid-state switch, a load, and a control device; wherein, the positive terminal of the capacitor is connected to the positive terminal of the charging power supply, the negative terminal of the capacitor is connected to the negative terminal of the charging power supply, the input terminal of the solid-state switch is connected to the positive terminal of the capacitor, and the output terminal of the solid-state switch is connected in series with the load and connected to the negative terminal of the capacitor; the control device is connected to the charging power supply and the solid-state switch respectively.

[0005] In some embodiments, the solid-state switch includes a power device and a power device control unit, with the power device and the power device control unit being configured in a one-to-one correspondence. The power device control unit includes a first high-speed communication channel and a second high-speed communication channel. The first high-speed communication channel is used to receive trigger pulses sent by the control device, and the second high-speed communication channel is used to send information on the power device's cutoff and turn-on.

[0006] In some embodiments, a human-machine interface is further included, which is connected to the control device. The control device is used to receive set values ​​from the human-machine interface. The set values ​​include the number of trigger pulses N0, the trigger pulse interval T, and a start triggering command.

[0007] In some embodiments, the control device includes a periodic timer for obtaining the trigger pulse interval T.

[0008] In some embodiments, the power supply includes a third high-speed channel and a fourth high-speed channel, wherein the third high-speed channel is used to receive start and stop commands issued by the control device, and the fourth high-speed channel is used to send charging status information.

[0009] In some embodiments, a current-limiting resistor is further included, which is connected between the positive terminal of the charging power supply and the positive terminal of the capacitor.

[0010] In some embodiments, the solid-state switch is connected to two diodes in anti-parallel configuration.

[0011] This application also provides a control method for a high-repetition-rate pulse generator, including:

[0012] Set the number of trigger pulses N0 and the trigger pulse interval T in the human-machine interface;

[0013] The control device starts the charging power supply and starts the cycle timer. The charging power supply charges the capacitor. After charging is completed, the control device sends a stop command to the charging power supply.

[0014] When the periodic timer reaches the trigger pulse interval T, the control device sends a trigger command to the power switch control unit, and the power switch control unit triggers the power device to turn on.

[0015] The control device records the triggering time of the return conduction signal of each power device relative to the triggering pulse, calculates the delay time difference between the triggering time of each power device and the latest triggering time, and records the delay time difference.

[0016] When the number of discharges is greater than or equal to N0, the current triggering cycle is completed and the triggering ends; when the number of discharges is less than N0, the charging power supply is started and a new round of triggering is started, until the number of discharges reaches N0.

[0017] This application also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the control method described above.

[0018] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method described above.

[0019] Beneficial Effects: Compared with the prior art, the high-repetition-rate pulse generator, control method, computer equipment, and computer-readable storage medium of this application are beneficial. The high-repetition-rate pulse generator includes: a charging power supply, a capacitor, a solid-state switch, a load, and a control device. The positive terminal of the capacitor is connected to the positive terminal of the charging power supply, and the negative terminal of the capacitor is connected to the negative terminal of the charging power supply. The input terminal of the solid-state switch is connected to the positive terminal of the capacitor, and the output terminal of the solid-state switch is connected in series with the load and then connected to the negative terminal of the capacitor. The control device is connected to both the charging power supply and the solid-state switch. It is understood that this high-repetition-rate pulse generator can be applied to high-repetition-rate pulse power applications, improving the accuracy of the high-repetition-rate pulse and offering the advantages of high-voltage safety isolation. It also has the function of adaptively adjusting the trigger consistency of the solid-state switch. By setting the solid-state switch, this high-repetition-rate pulse generator can achieve the advantages of low period dispersion, high repetition-rate function, and long switch life. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The technical solutions and other beneficial effects of this application will become apparent from the detailed description of specific embodiments below in conjunction with the accompanying drawings.

[0021] Figure 1 This is an equivalent circuit diagram of a pulse generator in the prior art;

[0022] Figure 2 This is a schematic diagram of a high-repetition-rate pulse generator.

[0023] Figure 3 This is a flowchart illustrating the adaptive triggering logic of the solid-state switch in an embodiment of this application.

[0024] The attached diagram shows the following components: 1-charging power supply, 2-current limiting resistor, 3-capacitor, 4-solid-state switch, 41-power device, 42-power device control unit, 5-load, 6-control device, 61-cycle timer, and 7-human-machine interface. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

[0027] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0028] Please see Figure 2 and Figure 3 This application provides a high-repetition-rate pulse generator, including: a charging power supply 1, a capacitor 3, a solid-state switch 4, a load 5, and a control device 6. The positive terminal of the charging power supply 1 is connected to the positive terminal of the capacitor 3, and the negative terminal of the charging power supply 1 is connected to the negative terminal of the capacitor 3. The input terminal of the solid-state switch 4 is connected to the positive terminal of the capacitor 3, and the output terminal of the solid-state switch 4 is connected in series with the load 5 and connected to the negative terminal of the capacitor 3. The control device 6 is connected to the charging power supply 1 and the solid-state switch 4 respectively.

[0029] The repetition rate pulse generator of this application connects the positive terminal of capacitor 3 to the positive terminal of charging power supply 1, and the negative terminal of capacitor 3 to the negative terminal of charging power supply 1. The input terminal of solid-state switch 4 is connected to the positive terminal of capacitor 3, and the output terminal of solid-state switch 4 is connected in series with load 5 and connected to the negative terminal of capacitor 3. Control device 6 is connected to charging power supply 1 and solid-state switch 4 respectively. Based on capacitor 3, solid-state switch 4 and control device 6, this repetition rate pulse generator can achieve low period dispersion, high repetition rate function and long switch life.

[0030] In this embodiment, the control device 6 is connected to the charging power supply 1 and the solid-state switch 4 via high-speed communication.

[0031] In some embodiments, the high-repetition-rate pulse generator further includes a human-machine interface 7, which is connected to the control device 6. The human-machine interface 7 is used to set a set value, wherein the set value is necessary trigger information. That is, the human-machine interface 7 is used to receive user instructions and set the set value according to the user instructions, and display key device information such as the set value. The control device 6 is used to receive the set value set by the human-machine interface 7. The set value includes the number of trigger pulses N, the trigger pulse interval T, and the start trigger command.

[0032] In some embodiments, the control device 6 includes a periodic timer 61, which is selected as an FPGA. The trigger interval is implemented by timing through the FPGA. Obtaining the trigger interval through the periodic timer 61 can improve accuracy.

[0033] In this embodiment, the human-machine interface 7 and the control device 6 are connected via a network cable. It should be understood that the human-machine interface 7 can be independent or integrated into the control device 6. If other devices can connect to or control the control device 6, the human-machine interface 7 can be omitted.

[0034] In some embodiments, the solid-state switch 4 includes a power device 41 and a power device control unit Un, with each power device 41 and power device control unit Un being configured in a one-to-one correspondence. Each power device control unit Un includes at least two high-speed channels. In this embodiment, the power device control unit Un includes a first high-speed communication channel Tn and a second high-speed communication channel Rn. The first high-speed communication channel Tn is used to receive trigger pulses sent by the control device 6, and the second high-speed communication channel Rn is used to send information on the cutoff and on-off states of the power device 41 configured corresponding to the power device control unit Un. Furthermore, the power device 41 is a power switch, and the solid-state switch 4 dynamically and automatically adjusts the trigger delay of each stage of the power device 41 according to the valve group feedback information to ensure the consistency of valve group opening.

[0035] It should be noted that n is a natural number from 1 to N, n = 1, 2, 3, ..., N; when n = 1, the power device control unit Un is U1, the first high-speed communication channel Tn is T1, and the second high-speed communication channel Rn is R1; when n = 2, the power device control unit Un is U2, the first high-speed communication channel Tn is T2, and the second high-speed communication channel Rn is R2; the power device control unit Un is UN, the first high-speed communication channel Tn is TN, and the second high-speed communication channel Rn is RN.

[0036] In some embodiments, the power device 41 is a semiconductor power device. Further, the power device 41 can be any one of a thyristor, IGBT, IGCT, GTO, or MOSFET.

[0037] In some embodiments, the solid-state switch 4 is connected to two anti-parallel diodes, which act as a stabilizer to protect the solid-state switch 4.

[0038] In this embodiment of the application, the repetition frequency pulse generator further includes a current-limiting resistor 2, one end of which is connected to the positive terminal of the charging power supply 1, and the other end of which is connected to the positive terminal of the capacitor 3.

[0039] In some embodiments, the charging power supply 1 includes at least one high-speed channel, which is responsible for receiving start and stop commands from the control device 6. Specifically, in this embodiment, the charging power supply 1 includes a third high-speed channel C1 and a fourth high-speed channel S1. The third high-speed channel C1 is used to receive start and stop commands from the control device 6, and the fourth high-speed channel S1 is used to transmit charging status information.

[0040] The high-repetition-rate pulse generator provided in this application connects the positive terminal of the charging power supply 1 to the positive terminal of the capacitor 3, and the negative terminal of the charging power supply 1 to the negative terminal of the capacitor 3. The input terminal of the solid-state switch 4 is connected to the positive terminal of the capacitor 3, and the output terminal of the solid-state switch 4 is connected in series with the load 5 and then connected to the negative terminal of the capacitor 3. The control device 6 is connected to the charging power supply 1 and the solid-state switch 4 respectively. It can generate a high-repetition-rate pulse current source that is automatically triggered according to the settings and has high and low voltage isolation. The solid-state switch 4 can achieve the advantages of low period dispersion, high-repetition-rate function, and long switch life of the pulse power device.

[0041] This application also provides a control method for a high-repetition-rate pulse generator, comprising the following steps:

[0042] Set the number of trigger pulses N0 and the trigger pulse interval T on the human-machine interface 7, and issue a start trigger command;

[0043] The control device 6 sends a start command to the charging power supply 1 to start the charging power supply 1, and at the same time starts the cycle timer 61. The charging power supply 1 charges the capacitor 3. After the charging is completed, the charging power supply 1 returns a charging success signal to the control device 6. The control device 6 sends a stop command to the charging power supply 1 and waits for the cycle timer 61 to complete the timing.

[0044] When the periodic timer 61 reaches the set trigger pulse interval T, the control device 6 sends a trigger command to the power switch control unit Un of the solid-state switch 4, and the power switch control unit Un triggers the power device 41 to conduct.

[0045] The control device 6 records the triggering time of the return conduction signal of each stage power device 41 of the solid-state switch 4 relative to the triggering pulse, and calculates and records the time difference between the triggering time of each stage power device 41 and the latest triggering time.

[0046] Determine if the number of discharges is greater than or equal to N0. If the number of discharges is greater than or equal to N0, complete the current triggering round and end the triggering process. If the number of discharges is less than N0, start charging power supply 1 and start a new round of triggering until the number of discharges reaches N0.

[0047] In the above steps, the operator operates the human-machine interface 7 to complete the setting of the set value; when each stage power device 41 is turned on, a turn-on signal is fed back to the control device 6, wherein the trigger pulse delay of each stage is based on the trigger delay time recorded one or more times before.

[0048] This application also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described control method.

[0049] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described control method.

[0050] The high-repetition-rate pulse generator, control method, computer equipment, and computer-readable storage medium provided in this application include: a charging power supply 1, a capacitor 3, a solid-state switch 4, a load 5, and a control device 6; the positive terminal of the capacitor 3 is connected to the positive terminal of the charging power supply 1, the negative terminal of the capacitor 3 is connected to the negative terminal of the charging power supply 1, the input terminal of the solid-state switch 4 is connected to the positive terminal of the capacitor 3, and the output terminal of the solid-state switch 4 is connected in series with the load 5 and connected to the negative terminal of the capacitor 3; the control device 6 is connected to both the charging power supply 1 and the solid-state switch 4. It is understood that the high-repetition-rate pulse generator of this application can be applied to high-repetition-rate pulse power applications, can improve the accuracy of the high-repetition-rate pulse, and has the advantages of high-voltage safety isolation, and has the function of adaptively adjusting the trigger consistency of the solid-state switch. By setting the solid-state switch 4, the high-repetition-rate pulse generator can achieve the advantages of low period dispersion, high repetition-rate function, and long switch life.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0052] The foregoing has provided a detailed description of the high-repetition-rate pulse generator, control method, computer device, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A high-repetition-rate pulse generator, characterized in that, include: The system includes a charging power supply (1), a capacitor (3), a solid-state switch (4), a load (5), and a control device (6), wherein the control device (6) includes a periodic timer (61); wherein, The positive terminal of the capacitor (3) is connected to the positive terminal of the charging power supply (1), the negative terminal of the capacitor (3) is connected to the negative terminal of the charging power supply (1), the input terminal of the solid-state switch (4) is connected to the positive terminal of the capacitor (3), and the output terminal of the solid-state switch (4) is connected in series with the load (5) and connected to the negative terminal of the capacitor (3); the control device (6) is connected to the charging power supply (1) and the solid-state switch (4) respectively. The solid-state switch (4) includes a power device (41) and a power device control unit (Un). The power device (41) and the power device control unit (Un) are configured in a one-to-one correspondence. The power device control unit (Un) includes a first high-speed communication channel (Tn) and a second high-speed communication channel (Rn). The first high-speed communication channel (Tn) is used to receive trigger pulses sent by the control device (6), and the second high-speed communication channel (Rn) is used to send information on the cut-off and turn-on of the power device (41) corresponding to the power device control unit (Un). The control device (6) is configured to: simultaneously start the charging power supply (1) and the period timer (61), charge the capacitor (3) through the charging power supply (1), and after the charging is completed, send a stop command to the charging power supply (1) according to the charging success signal returned by the charging power supply (1) and wait for the period timer (61) to complete the timing. When the cycle timer (61) reaches the set trigger pulse interval T, a trigger command is issued to the power switch control unit (Un) so that the power switch control unit (Un) triggers the power device (41) to turn on; Receive the conduction signal fed back when each stage power device (41) is turned on; record the trigger time of the return conduction signal of each stage power device (41) relative to the trigger pulse issued, calculate the delay time difference between the trigger time of each stage power device (41) and the latest trigger time, and record the delay time difference; When the number of discharges is greater than or equal to N0, the current round of triggering is completed and the triggering ends; when the number of discharges is less than N0, the charging power supply (1) is started and a new round of triggering is started until the number of discharges reaches N0.

2. The high-repetition-rate pulse generator according to claim 1, characterized in that, It also includes a human-machine interface (7), which is connected to the control device (6). The control device (6) is used to receive the set values ​​of the human-machine interface (7). The set values ​​include the number of trigger pulses N0, the trigger pulse interval T, and the start trigger command.

3. The high-repetition-rate pulse generator according to claim 2, characterized in that, The period timer (61) is used to obtain the trigger pulse interval T.

4. The high-repetition-rate pulse generator according to claim 1, characterized in that, The power supply (1) includes a third high-speed channel (C1) and a fourth high-speed channel (S1). The third high-speed channel (C1) is used to receive start and stop commands issued by the control device (6), and the fourth high-speed channel (S1) is used to send charging status information.

5. The high-repetition-rate pulse generator according to claim 1, characterized in that, It also includes a current-limiting resistor (2), which is connected between the positive terminal of the charging power supply (1) and the positive terminal of the capacitor (3).

6. The high-repetition-rate pulse generator according to claim 1, characterized in that, The solid-state switch (4) is connected to two diodes in reverse parallel.

7. A control method for a high-repetition-rate pulse generator, characterized in that, include: In the human-machine interface (7), set the number of trigger pulses N0 and the trigger pulse interval T; The control device (6) starts the charging power supply (1), starts the cycle timer (61), the charging power supply (1) charges the capacitor (3), and after the charging is completed, the control device (6) sends a stop command to the charging power supply (1); When the period timer (61) reaches the trigger pulse interval T, the control device (6) sends a trigger command to the power switch control unit (Un), and the power switch control unit (Un) triggers the power device (41) to turn on; The control device (6) receives the conduction signal fed back when each power device (41) is turned on, records the triggering time of the return conduction signal of each power device (41) relative to the triggering pulse, calculates the delay time difference between the triggering time of each power device (41) and the latest triggering time, and records the delay time difference. When the number of discharges is greater than or equal to N0, the current round of triggering is completed and the triggering ends; when the number of discharges is less than N0, the charging power supply (1) is started and a new round of triggering is started until the number of discharges reaches N0.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the control method of claim 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method of claim 7.

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