A polarity-adjustable high-voltage pulse generator

Abstract

A polarity-adjustable high-voltage pulse generator includes: a control signal generation module, an opto-isolation drive module, a solid-state switch drive module, a Marx circuit low-voltage generation module, a relay polarity switching module, a pulse transformer boost unit module, and a load. This invention proposes a polarity-adjustable high-voltage pulse source based on a Marx-type circuit combined with a pulse transformer. Only a small number of Marx circuit stages are needed as the front-end low-voltage output unit, and high-voltage output is achieved by using a pulse transformer to boost the voltage. Simultaneously, the primary winding of the low-voltage output unit is connected to the Marx circuit using a high-frequency relay. By controlling the relay switching, the polarity of the high-voltage pulse generator is adjustable. The high-voltage pulse generator proposed in this invention can achieve high-amplitude single positive polarity, single negative polarity, and bipolar voltage outputs.

Description

Technical Field

[0001] This invention relates to the field of pulse power device applications, specifically a polarity-adjustable high-voltage pulse generator. Background Technology

[0002] In recent years, with the rapid development of social demand and pulsed power technology, its application fields have been continuously broadened. The demand for pulsed sources in fields such as biomedicine, food processing, environmental protection, plasma generation, and industrial applied scientific research is increasing. In biomedicine, pulsed electric field therapy for tumors has advantages such as non-thermal medical effects and window effects. Its application in environmental protection has gained attention due to recent environmental pollution issues. Pulsed electric fields can effectively disrupt the structure of microorganisms to inhibit their growth and improve water activity, offering advantages such as ease of implementation, good results, and no pollution. In plasma applications, pulsed sources can generate room-temperature plasma at atmospheric pressure, which can be used for wound disinfection and has significant medical value.

[0003] Solid-state pulse sources utilize semiconductor switching devices, which offer advantages such as high operating repetition frequency, long lifespan, small size, high efficiency, high reliability, ease of control, and active turn-off capability. With the continuous development of pulse power technology and the increasing demands for pulse voltage levels, the number of stages in Marx-type solid-state pulse sources needs to be continuously increased, leading to a rise in the number of switches required, system size, and cost. Furthermore, a bipolar pulse source at the same voltage level requires more than twice the number of switches as a unipolar pulse source. Moreover, solid-state pulse sources need to address the high-potential floating isolation drive problem for solid-state switches. Currently, the switch isolation drive solution employs a commercially available isolated power supply module combined with fiber optic isolation drive, relying on the isolation voltage capability of the power supply module for high-potential floating. However, the isolation capability of currently used power supply modules is generally below 15kV, making it difficult to meet the requirements of high output voltage parameters.

[0004] Solid-state Marx-type circuit topologies are widely used in pulse generator development. Theoretically, their output voltage capability can increase with the number of stages. However, due to limitations in the development of front-end solid-state switch isolation drives, their output voltage is generally low. Furthermore, the increase in the number of stages leads to a higher number of solid-state switches used in the device, reducing system reliability and significantly increasing cost. If the pulse source output polarity is bipolar, and the number of solid-state switches is more than doubled for the same voltage level, this further reduces the device's reliability and increases its cost. Summary of the Invention

[0005] The purpose of this invention is to provide a polarity-adjustable high-voltage pulse generator, comprising: a control signal generation module, an opto-isolation drive module, a solid-state switch drive module, a Marx circuit low-voltage forming module, a relay polarity switching module, a pulse transformer boost unit module, and a load.

[0006] The control signal generation module is used to generate switch control signals.

[0007] The opto-isolation drive module is used to eliminate the high-potential floating of solid-state switches.

[0008] After receiving the switch control signal, the solid-state switch driver module controls the on and off of each switch in the Marx circuit low-voltage forming module, as well as the on and off time.

[0009] The Marx circuit low-voltage forming module is used to provide a low-voltage output signal for the pulse transformer boost unit module.

[0010] The Marx circuit low-voltage forming module includes n cascaded Marx circuits.

[0011] The relay polarity switching module is used to switch the polarity of the high-voltage pulse output by the pulse transformer boost unit module.

[0012] The pulse transformer boost unit module converts the low-voltage output signal from the front end into a high-voltage signal and inputs it to the load.

[0013] The circuit topology of the polarity-adjustable high-voltage pulse generator is shown below:

[0014] Let the end of the high-voltage DC power supply DC1 with the positive terminal be terminal A, and the end with the negative terminal be terminal B. Terminal B is grounded.

[0015] The switch S 1i and S 2i All use MOSFET switches, and the gates of all are floating, i = 1, 2, ..., n.

[0016] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the main switch S. 11 The drain of the main switch S 11 Source series bypass switch S 21 The drain, bypass switch S 21 The source is connected to terminal B.

[0017] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the energy storage capacitor C1 and then connected to terminal B.

[0018] The isolation diode D m Anode series main switch S 1m-1The drain of the isolation diode D m Cathode series energy storage capacitor C m Connected to the main switch S 1m-1 The source poles, m = 2, 3, ..., n.

[0019] The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode D m Cathode series main switch S 1m The drain of the main switch S 1m Source series bypass switch S 2m The drain, bypass switch S 2m The source is connected to the main switch S. 1m-1 The source pole.

[0020] The four terminals of the high-frequency relay DS are designated as F, G, H, and I.

[0021] The F terminal is connected to the bypass switch S. 2n The drain electrode.

[0022] The G terminal is connected to the B terminal.

[0023] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The distributed capacitance C of the primary winding of the pulse transformer d1 Then connect to the I terminal.

[0024] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 pulse transformer excitation winding L m Then connect to the I terminal.

[0025] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The inductor L1 is then connected to terminal I.

[0026] Inductor L2 and inductor L1 are the equivalent turns ratio inductances of the primary and secondary windings, respectively. Let one end of inductor L2 be the J end and the other end be the K end.

[0027] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 Then connect to the K end.

[0028] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 Load R L Then connect to the K end.

[0029] Furthermore, the polarity-adjustable high-voltage pulse generator also includes a host computer.

[0030] The host computer is used to input circuit parameters.

[0031] Furthermore, the voltage amplitude, pulse width, and frequency of the high-voltage pulse output by the polarity-adjustable high-voltage pulse generator are all adjustable.

[0032] Furthermore, the output voltage of the high-voltage DC power supply DC1 is Vdc.

[0033] The pulse transformer boosts the low-voltage pulse from inductor L1, thereby increasing the voltage at the load R. L The terminal output is assigned the value Vo = N*n*V dc The high-voltage pulse. N is the turns ratio of the pulse transformer.

[0034] Furthermore, the signals output by the high-voltage pulse generator include positive, negative, and bipolar high-voltage pulse signals.

[0035] Furthermore, when the F and H terminals of the high-frequency relay DS are connected, the G and I terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a positive pulse.

[0036] Furthermore, when the F and I terminals of the high-frequency relay DS are connected, the G and H terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a negative polarity pulse.

[0037] Furthermore, when diode D i Bypass switch S 2i All are on, and the main switch S 1i When both are disconnected, the high-voltage pulse generator is in the charging state.

[0038] The technical advantages of this invention are undeniable. This invention proposes a polarity-adjustable high-voltage pulse source based on a Marx-type circuit combined with a pulse transformer. Only a small number of Marx circuit stages are needed as the low-voltage output unit at the front end, and the high-voltage output is achieved by using a pulse transformer to boost the voltage. Simultaneously, the primary winding of the low-voltage output unit is connected to the Marx circuit using a high-frequency relay. By controlling the relay switching, the polarity of the high-voltage pulse generator is adjustable. The high-voltage pulse generator proposed in this invention can achieve high-amplitude single positive polarity, single negative polarity, and bipolar voltage outputs.

[0039] The beneficial effects of this invention include:

[0040] 1. This invention achieves high-voltage output by cascading a small number of Marx circuits with pulse transformers, improving device reliability and reducing costs. A combination of solid-state switches and pulse transformers enables high-amplitude bipolar pulse transformer output.

[0041] 2. The primary winding of the transformer in the low-voltage generating unit of the present invention is connected to the Marx main circuit by a high-frequency relay. The polarity can be adjusted by controlling the relay switching, which greatly reduces the number of solid-state switches in the device, improves system reliability, and reduces costs.

[0042] 3. The high-voltage pulse generator proposed in this invention can flexibly adjust the output voltage, output pulse width, and output frequency. Attached Figure Description

[0043] Figure 1 The various modules of this invention constitute the whole;

[0044] Figure 2 High-voltage pulse source circuit principle;

[0045] Figure 3 Anodic operation process;

[0046] Figure 4 Cathodic operation process. Detailed Implementation

[0047] The present invention will be further described below with reference to embodiments, but it should not be construed that the scope of the present invention is limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention should be included within the scope of protection of the present invention.

[0048] Example 1:

[0049] See Figures 1 to 4 A polarity-adjustable high-voltage pulse generator includes: a control signal generation module, an opto-isolation drive module, a solid-state switch drive module, a Marx circuit low-voltage forming module, a relay polarity switching module, a pulse transformer boost unit module, and a load.

[0050] The control signal generation module is used to generate switch control signals.

[0051] The opto-isolation drive module is used to eliminate the high-potential floating of solid-state switches.

[0052] After receiving the switch control signal, the solid-state switch driver module controls the on and off of each switch in the Marx circuit low-voltage forming module, as well as the on and off time.

[0053] The Marx circuit low-voltage forming module is used to provide a low-voltage output signal for the pulse transformer boost unit module.

[0054] The Marx circuit low-voltage forming module includes n cascaded Marx circuits.

[0055] The relay polarity switching module is used to switch the polarity of the high-voltage pulse output by the pulse transformer boost unit module.

[0056] The pulse transformer boost unit module converts the low-voltage output signal from the front end into a high-voltage signal and inputs it to the load.

[0057] The circuit topology of the polarity-adjustable high-voltage pulse generator is shown below:

[0058] Let the end of the high-voltage DC power supply DC1 with the positive terminal be terminal A, and the end with the negative terminal be terminal B. Terminal B is grounded.

[0059] The switch S 1i and S 2i All use MOSFET switches, and the gates of all are floating, i = 1, 2, ..., n.

[0060] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the main switch S. 11 The drain of the main switch S 11 Source series bypass switch S 21 The drain, bypass switch S 21 The source is connected to terminal B.

[0061] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the energy storage capacitor C1 and then connected to terminal B.

[0062] The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode D m Cathode series energy storage capacitor C m Connected to the main switch S 1m-1 The source poles, m = 2, 3, ..., n.

[0063] The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode D m Cathode series main switch S 1m The drain of the main switch S 1m Source series bypass switch S 2m The drain, bypass switch S 2m The source is connected to the main switch S. 1m-1 The source pole.

[0064] The four terminals of the high-frequency relay DS are designated as F, G, H, and I.

[0065] The F terminal is connected to the bypass switch S. 2n The drain electrode.

[0066] The G terminal is connected to the B terminal.

[0067] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The distributed capacitance C of the primary winding of the pulse transformer d1 Then connect to the I terminal.

[0068] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 pulse transformer excitation winding L m Then connect to the I terminal.

[0069] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The inductor L1 is then connected to terminal I.

[0070] Inductor L2 and inductor L1 are the equivalent turns ratio inductances of the primary and secondary windings, respectively. Let one end of inductor L2 be the J end and the other end be the K end.

[0071] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 Then connect to the K end.

[0072] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 Load R L Then connect to the K end.

[0073] The opto-isolation driving module includes: an isolation diode D n .

[0074] The solid-state switch driver module includes: a main switch S 1n Bypass switch S 2n .

[0075] The Marx circuit low-voltage forming module includes: an isolation diode D. n Main switch S 1n Bypass switch S 2n Energy storage capacitor C n .

[0076] The relay polarity switching module includes: a high-frequency relay DS.

[0077] The pulse transformer boost unit module includes: pulse transformer primary leakage inductance L s1The distributed capacitance C of the primary winding of the pulse transformer d1 pulse transformer excitation winding L m Inductance L2, Inductance L1, Leakage inductance L of the secondary winding of the pulse transformer s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 .

[0078] The polarity-adjustable high-voltage pulse generator also includes a host computer.

[0079] The host computer is used to input circuit parameters, and the types of input parameters include voltage and current.

[0080] The voltage amplitude, pulse width, and frequency of the high-voltage pulse output by the polarity-adjustable high-voltage pulse generator are all adjustable.

[0081] The output voltage of the high-voltage DC power supply DC1 is Vdc.

[0082] The pulse transformer boosts the low-voltage pulse from inductor L1, thereby increasing the voltage at the load R. L The terminal output is assigned the value Vo = N*n*V dc The high-voltage pulse. N is the turns ratio of the pulse transformer.

[0083] The high-voltage pulse generator outputs signals including positive, negative, and bipolar high-voltage pulse signals.

[0084] When the F and H terminals of the high-frequency relay DS are connected, the G and I terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a positive pulse.

[0085] When the F and I terminals of the high-frequency relay DS are connected, the G and H terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a negative polarity pulse.

[0086] When diode D i Bypass switch S 2i All are on, and the main switch S 1i When both are disconnected, the high-voltage pulse generator is in the charging state.

[0087] Example 2:

[0088] See Figures 1 to 4A polarity-adjustable high-voltage pulse generator includes: a control signal generation module, an opto-isolation drive module, a solid-state switch drive module, a Marx circuit low-voltage forming module, a relay polarity switching module, a pulse transformer boost unit module, and a load.

[0089] The control signal generation module is used to generate switch control signals.

[0090] The opto-isolation drive module is used to eliminate the high-potential floating of solid-state switches.

[0091] After receiving the switch control signal, the solid-state switch driver module controls the on and off of each switch in the Marx circuit low-voltage forming module, as well as the on and off time.

[0092] The Marx circuit low-voltage forming module is used to provide a low-voltage output signal for the pulse transformer boost unit module.

[0093] The Marx circuit low-voltage forming module includes n cascaded Marx circuits.

[0094] The relay polarity switching module is used to switch the polarity of the high-voltage pulse output by the pulse transformer boost unit module.

[0095] The pulse transformer boost unit module converts the low-voltage output signal from the front end into a high-voltage signal and inputs it to the load.

[0096] The circuit topology of the polarity-adjustable high-voltage pulse generator is shown below:

[0097] Let the end of the high-voltage DC power supply DC1 with the positive terminal be terminal A, and the end with the negative terminal be terminal B. Terminal B is grounded.

[0098] The switch S 1i and S 2i All use MOSFET switches, and the gates of all are floating, i = 1, 2, ..., n.

[0099] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the main switch S. 11 The drain of the main switch S 11 Source series bypass switch S 21 The drain, bypass switch S 21 The source is connected to terminal B.

[0100] The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the energy storage capacitor C1 and then connected to terminal B.

[0101] The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode Dm Cathode series energy storage capacitor C m Connected to the main switch S 1m-1 The source poles, m = 2, 3, ..., n.

[0102] The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode D m Cathode series main switch S 1m The drain of the main switch S 1m Source series bypass switch S 2m The drain, bypass switch S 2m The source is connected to the main switch S. 1m-1 The source pole.

[0103] The four terminals of the high-frequency relay DS are designated as F, G, H, and I.

[0104] The F terminal is connected to the bypass switch S. 2n The drain electrode.

[0105] The G terminal is connected to the B terminal.

[0106] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The distributed capacitance C of the primary winding of the pulse transformer d1 Then connect to the I terminal.

[0107] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 pulse transformer excitation winding L m Then connect to the I terminal.

[0108] The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The inductor L1 is then connected to terminal I.

[0109] Inductor L2 and inductor L1 are the equivalent turns ratio inductances of the primary and secondary windings, respectively. Let one end of inductor L2 be the J end and the other end be the K end.

[0110] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 Then connect to the K end.

[0111] The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 Load R L Then connect to the K end.

[0112] The opto-isolation driving module includes: an isolation diode D n .

[0113] The solid-state switch driver module includes: a main switch S 1n Bypass switch S 2n .

[0114] The Marx circuit low-voltage forming module includes: an isolation diode D. n Main switch S 1n Bypass switch S 2n Energy storage capacitor C n .

[0115] The relay polarity switching module includes: a high-frequency relay DS.

[0116] The pulse transformer boost unit module includes: pulse transformer primary leakage inductance L s1 The distributed capacitance C of the primary winding of the pulse transformer d1 pulse transformer excitation winding L m Inductance L2, Inductance L1, Leakage inductance L of the secondary winding of the pulse transformer s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 .

[0117] Example 3:

[0118] A polarity-adjustable high-voltage pulse generator is described in Embodiment 2. The polarity-adjustable high-voltage pulse generator also includes a host computer.

[0119] The host computer is used to input circuit parameters, and the types of input parameters include voltage and current.

[0120] Example 4:

[0121] A polarity-adjustable high-voltage pulse generator, as shown in Embodiment 2, wherein the voltage amplitude, pulse width, and frequency of the high-voltage pulse output by the polarity-adjustable high-voltage pulse generator are all adjustable.

[0122] Example 5:

[0123] A polarity-adjustable high-voltage pulse generator is described in Embodiment 2, wherein the output voltage of the high-voltage DC power supply DC1 is Vdc.

[0124] The pulse transformer boosts the low-voltage pulse from inductor L1, thereby increasing the voltage at the load R. L The terminal output is assigned the value Vo = N*n*V dc The high-voltage pulse. N is the turns ratio of the pulse transformer.

[0125] Example 6:

[0126] A polarity-adjustable high-voltage pulse generator, as shown in Embodiment 2, outputs signals including positive, negative, and bipolar high-voltage pulse signals.

[0127] Example 7:

[0128] A polarity-adjustable high-voltage pulse generator, as shown in Embodiment 6, is characterized by the following: when the F and H terminals of the high-frequency relay DS are connected, the G and I terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a positive pulse.

[0129] Example 8:

[0130] A polarity-adjustable high-voltage pulse generator, as shown in Embodiment 6, is used when the F and I terminals of the high-frequency relay DS are connected, the G and H terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a negative polarity pulse.

[0131] Example 9:

[0132] A polarity-adjustable high-voltage pulse generator, as shown in Embodiment 6, wherein when diode D... i Bypass switch S 2i All are on, and the main switch S 1i When both are disconnected, the high-voltage pulse generator is in the charging state.

[0133] Example 10:

[0134] A polarity-adjustable high-voltage pulse generator, comprising: the module structure of this invention patent as follows Figure 1 As shown, the main circuit topology of the high-voltage pulse source is as follows: Figure 2 As shown.

[0135] The number of stages in the front-end pulse forming unit is n. DC1 is a high-voltage DC power supply with an output voltage of Vdc. n For isolation diodes, C n For energy storage capacitors, S 1n Main switch, S 2n For bypass switch, DS is a high-frequency relay, L s1 For the primary leakage inductance of the pulse transformer; C d1 L is the distributed capacitance of the primary winding of the pulse transformer; m L1 and L2 are the excitation windings of the pulse transformer; L1 and L2 are the inductances of the primary and secondary windings with equivalent turns ratios; L s2 Leakage inductance of the secondary winding of the pulse transformer; C d2 R is the distributed capacitance of the secondary winding of the pulse transformer. LThe load is N. The turns ratio of the pulse transformer is N, and the final output amplitude of the high-voltage pulse source is Vo = N * n * Vdc.

[0136] By controlling the switching of the high-frequency relay, the output of the high-voltage pulse source can be made to be single-anode, single-cathode, or bipolar. Its anodic operation process is as follows: Figure 3 As shown, the cathodic operation process is as follows: Figure 4 As shown.

[0137] In summary, this invention utilizes a Marx-type circuit cascaded with a pulse transformer and a high-frequency relay to achieve output polarity switching. This generator requires only a small number of Marx circuit stages to achieve high-amplitude output with adjustable polarity. Furthermore, the voltage, pulse width, and frequency of the pulse generator are all flexibly adjustable.

Claims

1. A polarity-adjustable high-voltage pulse generator, characterized in that, include: The system includes a control signal generation module, an opto-isolation drive module, a solid-state switch drive module, a Marx circuit low-voltage forming module, a relay polarity switching module, a pulse transformer boost unit module, and a load. The control signal generation module is used to generate switch control signals; The opto-isolation drive module is used to eliminate the high-potential floating of the solid-state switch; After receiving the switch control signal, the solid-state switch driver module controls the on and off of each switch in the Marx circuit low-voltage forming module, as well as the on and off times. The Marx circuit low-voltage forming module is used to provide a low-voltage output signal for the pulse transformer boost unit module; The Marx circuit low-voltage forming module includes n cascaded Marx circuits; The relay polarity switching module is used to switch the polarity of the high-voltage pulse output by the pulse transformer boost unit module; The pulse transformer boost unit module converts the low-voltage output signal from the front end into a high-voltage signal and inputs it to the load; The circuit topology of the polarity-adjustable high-voltage pulse generator is shown below: Let the positive terminal of the high-voltage DC power supply DC1 be terminal A, and the negative terminal be terminal B. Terminal B is grounded. The switch S 1i and S 2i All use MOSFET switches, and the gates of all are floating, i = 1, 2, ..., n; The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the main switch S. 11 The drain of the main switch S 11 Source series bypass switch S 21 The drain, bypass switch S 21 The source is connected to terminal B; The anode of the isolation diode D1 is connected in series at terminal A, and the cathode of the isolation diode D1 is connected in series with the energy storage capacitor C1 and then connected to terminal B. The isolation diode D m Anode series main switch S 1m-1 The drain of the isolation diode D m Cathode series energy storage capacitor C m Connected to the main switch S 1m-1 The source poles, m = 2, 3, ..., n; The isolation diode D m Cathode series main switch S 1m The drain of the main switch S 1m Source series bypass switch S 2m The drain, bypass switch S 2m The source is connected to the main switch S. 1m-1 The source pole; The four terminals of the high-frequency relay DS are designated as F, G, H, and I. The F terminal is connected to the bypass switch S. 2n The drain electrode; The G terminal is connected to the B terminal; The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 The distributed capacitance C of the primary winding of the pulse transformer d1 Then connect to the I terminal; The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 pulse transformer excitation winding L m Then connect to the I terminal; The H terminal is connected in series with the primary leakage inductance L of the pulse transformer. s1 Inductor L1 is connected to terminal I; Inductor L2 and inductor L1 are the equivalent turns ratio inductances of the primary and secondary windings, respectively. Let one end of inductor L2 be terminal J and the other end be terminal K. The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 The distributed capacitance C of the secondary winding of the pulse transformer d2 Then connect to the K terminal; The leakage inductance L of the secondary winding of the pulse transformer is connected in series at the J terminal. s2 Load R L Then connect to the K end.

2. The polarity-adjustable high-voltage pulse generator according to claim 1, characterized in that, The polarity-adjustable high-voltage pulse generator also includes a host computer; The host computer is used to input circuit parameters.

3. The polarity-adjustable high-voltage pulse generator according to claim 1, characterized in that, The voltage amplitude, pulse width, and frequency of the high-voltage pulse output by the polarity-adjustable high-voltage pulse generator are all adjustable.

4. A polarity-adjustable high-voltage pulse generator according to claim 1, characterized in that, The output voltage of the high-voltage DC power supply DC1 is Vdc; The pulse transformer boosts the low-voltage pulse from inductor L1, thereby increasing the voltage at the load R. L The terminal output is assigned the value Vo = N*n*V dc The high-voltage pulse; N is the turns ratio of the pulse transformer.

5. A polarity-adjustable high-voltage pulse generator according to claim 1, characterized in that, The high-voltage pulse generator outputs signals including positive, negative, and bipolar high-voltage pulse signals.

6. A polarity-adjustable high-voltage pulse generator according to claim 5, characterized in that, When the F and H terminals of the high-frequency relay DS are connected, and the G and I terminals are connected, and diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a positive pulse.

7. A polarity-adjustable high-voltage pulse generator according to claim 5, characterized in that, When the F and I terminals of the high-frequency relay DS are connected, and the G and H terminals are connected, and the diode D... i All are disconnected, main switch S 1i All circuits are on, bypass switch S 2i When both are disconnected, the signal output by the high-voltage pulse generator is a negative polarity pulse.

8. A polarity-adjustable high-voltage pulse generator according to claim 5, characterized in that, When diode D i Bypass switch S 2i All are on, and the main switch S 1i When both are disconnected, the high-voltage pulse generator is in the charging state.

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