CN216565097U - Nanosecond high-voltage pulse generator - Google Patents
Nanosecond high-voltage pulse generator Download PDFInfo
- Publication number
- CN216565097U CN216565097U CN202122802344.2U CN202122802344U CN216565097U CN 216565097 U CN216565097 U CN 216565097U CN 202122802344 U CN202122802344 U CN 202122802344U CN 216565097 U CN216565097 U CN 216565097U
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- direct
- circuit
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a nanosecond high-voltage pulse generator which comprises a system power supply, an auxiliary power supply, a single chip microcomputer, a display control module, a direct-current high-voltage driving circuit, a direct-current high-voltage switching circuit, a discharge protection circuit and a feedback protection circuit, wherein the system power supply is connected with the single chip microcomputer; the system power supply is communicated with the auxiliary power supply, the single chip microcomputer and the direct-current high-voltage driving circuit and supplies power, and the single chip microcomputer is respectively communicated with the display control module, the direct-current high-voltage driving circuit, the direct-current high-voltage switching circuit and the feedback protection circuit; the output end of the auxiliary power supply is connected with the power supply end of the direct-current high-voltage switch circuit, the opening controlled end of the direct-current high-voltage switch circuit is connected with the output end of the direct-current high-voltage drive circuit, the direct-current high-voltage switch circuit is connected with the single chip microcomputer through a feedback protection circuit, and the direct-current high-voltage switch circuit is also connected with a discharge protection circuit; high voltage pulses with a rise time of 1.4ns and an amplitude of 3kV can be generated.
Description
Technical Field
The utility model relates to the technical field of high-voltage pulse, in particular to a nanosecond high-voltage pulse generator.
Background
The high voltage technology, especially the instantaneous high voltage technology, is a technology that stores low voltage and low power electric energy and then generates ultrahigh voltage pulse through boost conversion and instantaneous release. The pulse power technology is a technology for applying stored energy to a load in the form of electric energy in a single pulse mode or a short pulse mode with a repetition frequency, and is widely applied to a series of fields of military industry, energy, materials and biology, such as radar transmitters, high-voltage pulse electric field sterilization, insulation material electric pulse crushing and the like. The key to realize the technology is to design a high-voltage and high-power high-voltage pulse generator. There are roughly two ways to generate high voltage pulses: firstly, low-voltage pulse is converted by relatively low direct current electric inversion, and then high-voltage pulse is obtained through a pulse booster; the other is that the high voltage DC power supply supplies power, the pulse energy storage capacitor stores energy, and then the energy is converted into high voltage pulse through a high voltage switch.
The high-power high-voltage pulse booster is difficult to develop and expensive, and once a fault occurs, the high-power high-voltage pulse booster is difficult to maintain, so that the first method is suitable for low-power application; the second method is to directly provide voltage by a high-voltage direct-current power supply, and the research technology of the high-voltage direct-current power supply is mature, and high voltage and high power are easy to realize, so that the method is suitable for high-power application occasions. However, the second method requires the development of a switch capable of withstanding high voltage and high power. In the early days, switches such as vacuum switches, gas switches and thyristors were generally adopted, but the switches have short service life, slow switching speed and poor controllability, thereby limiting the development of pulse power technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a nanosecond high-voltage pulse generator which can generate high-voltage pulses with the rise time of 1.4ns and the amplitude of 3kV, is programmable and controlled, is operated by one key and is convenient to operate.
The technical scheme adopted by the utility model is as follows:
a nanosecond high-voltage pulse generator comprises a system power supply, an auxiliary power supply, a single chip microcomputer, a display control module, a direct-current high-voltage driving circuit, a direct-current high-voltage switching circuit, a discharge protection circuit and a feedback protection circuit; the system power supply is communicated with the auxiliary power supply, the single chip microcomputer and the direct-current high-voltage driving circuit and supplies power, and the single chip microcomputer is respectively communicated with the display control module, the direct-current high-voltage driving circuit, the direct-current high-voltage switching circuit and the feedback protection circuit; the output end of the auxiliary power supply is connected with the power supply end of the direct-current high-voltage switch circuit, the opening controlled end of the direct-current high-voltage switch circuit is connected with the output end of the direct-current high-voltage drive circuit, the direct-current high-voltage switch circuit is connected with the single chip microcomputer through the feedback protection circuit, and the direct-current high-voltage switch circuit is further connected with the discharge protection circuit.
The direct-current high-voltage driving circuit comprises a TTL signal driving module, a controlled end of the TTL signal driving module is connected with the single chip microcomputer, and an output end of the TTL signal driving module is connected with a starting controlled end of the direct-current high-voltage switching circuit.
The direct-current high-voltage switch circuit comprises a PWM modulation driving module, a PWM high-voltage preceding-stage driving module, a rectification detection module, a rectification voltage-multiplying module, a high-voltage switch module and a direct-current high-voltage pulse output module which are sequentially and electrically connected, wherein the PWM high-voltage preceding-stage driving module, the rectification detection module, the rectification voltage-multiplying module and the high-voltage switch module are respectively connected with a feedback protection circuit, the rectification detection module is connected with a single chip microcomputer through a check and division detection module, the rectification voltage-multiplying module is connected with a discharge protection circuit, and the controlled end of the high-voltage switch module is connected with the output end of a TTL signal driving module.
The high-voltage switch module consists of a high-voltage pulse module and a peripheral circuit, wherein the peripheral circuit comprises a coupling resistor, a buffer capacitor, a current-limiting resistor, an RC absorption circuit and a feedback resistor; the auxiliary power supply is connected to a power supply port of the high-voltage pulse module through a buffer capacitor; the warning end of singlechip is connected to the warning feedback port of high-voltage pulse module, and the high-voltage input end of high-voltage pulse module passes through current-limiting resistor and connects the high voltage source, and RC absorption circuit is still connected to the high-voltage pulse module, and the high-voltage pulse module passes through feedback resistor output pulse direct current signal.
According to the utility model, the STM32 single chip microcomputer outputs instructions to the TTL signal driving module and the PWM modulation driver respectively according to the instruction input by the display control module, an STM32 embedded single chip microcomputer is adopted, one-key control is realized through preprogramming, and the operation is convenient. Meanwhile, the PWM high-voltage preceding-stage driving module is triggered to conduct and work, then rectification processing is carried out through the rectification detection module and the rectification voltage-multiplying module, and set high voltage is output and enters the high-voltage switch module. The adjustable TTL signal output by the TTL signal driving module triggers a driving front stage of the high-voltage switch module so as to control the switching on and off of the internal Mosfet and output a controllable and programmable direct current pulse signal on the resistance-capacitance load. In the working process, the PWM high-voltage preceding-stage driving module, the high-voltage detection module and the high-voltage switch module can be subjected to real-time detection of the feedback protection circuit, and can be automatically stopped when a problem occurs, so that the warning is prompted.
Drawings
FIG. 1 is a schematic block diagram of the circuit of the present invention;
FIG. 2 is a schematic block diagram of a high voltage switch module circuit of the present invention;
FIG. 3 is a flow chart of the present invention;
fig. 4 is a single pulse frequency rendering of the present invention.
Detailed Description
As shown in fig. 1, the nanosecond-level high-voltage pulse generator of the utility model comprises a system power supply, an auxiliary power supply, a single chip microcomputer, a display control module, a direct-current high-voltage driving circuit, a direct-current high-voltage switching circuit, a discharge protection circuit and a feedback protection circuit; the system power supply is communicated with the auxiliary power supply, the singlechip and the direct-current high-voltage driving circuit and supplies power; the commercial power 220V enters a system power circuit after being filtered and rectified, and is respectively supplied to an auxiliary power supply, a TTL signal driving module and an STM32 singlechip circuit for power supply. The single chip microcomputer is respectively communicated with the display control module, the direct-current high-voltage driving circuit, the direct-current high-voltage switching circuit and the feedback protection circuit. In order to ensure that the digital visual environment is convenient to operate and control, an STM32 embedded single-chip microcomputer is adopted, one-key control is realized through preprogramming, and a required pulse signal source is generated.
The output end of the auxiliary power supply is connected with the power supply end of the direct-current high-voltage switch circuit, the opening controlled end of the direct-current high-voltage switch circuit is connected with the output end of the direct-current high-voltage drive circuit, the direct-current high-voltage switch circuit is connected with the single chip microcomputer through the feedback protection circuit, and the direct-current high-voltage switch circuit is further connected with the discharge protection circuit.
The direct-current high-voltage driving circuit comprises a TTL signal driving module, a controlled end of the TTL signal driving module is connected with the single chip microcomputer, and an output end of the TTL signal driving module is connected with a starting controlled end of the direct-current high-voltage switching circuit. And generating 5V TTL signals with programmable pulse width by the CPLD device. The TTL signal driving module can be controlled in a programmable mode, can output 0-5 kHz frequency and step certain TTL signals, and is used for controlling the on-off of the high-voltage switch module.
The direct-current high-voltage switch circuit comprises a PWM modulation driving module, a PWM high-voltage preceding-stage driving module, a rectification detection module, a rectification voltage-multiplying module, a high-voltage switch module and a direct-current high-voltage pulse output module which are sequentially and electrically connected, wherein the PWM high-voltage preceding-stage driving module, the rectification detection module, the rectification voltage-multiplying module and the high-voltage switch module are respectively connected with a feedback protection circuit, the rectification detection module is connected with a single chip microcomputer through a check and division detection module, the rectification voltage-multiplying module is connected with a discharge protection circuit, and the controlled end of the high-voltage switch module is connected with the output end of a TTL signal driving module. The voltage of the modulation signal is continuously adjustable under the programming control, the PWM modulation driving module sends a PWM programmable modulation signal to generate primary high voltage through the PMW high-voltage preceding-stage driving module, and then the primary high voltage is output to the rectification detection module and the rectification voltage doubling module, so that secondary high voltage, namely direct current high voltage of 200V-3000 kV is obtained, and the secondary high voltage is stored by the buffer capacitor and is output to the direct current high-voltage pulse output module to serve as a direct current high-voltage source.
As shown in fig. 2, the high voltage switch module is composed of a high voltage pulse module and a peripheral circuit, the peripheral circuit includes a coupling resistor, a buffer capacitor, a current limiting resistor, an RC absorption circuit and a feedback resistor, an output terminal of the TTL signal driving module is connected to a signal receiving port of the high voltage pulse module through the coupling resistor, and an output signal of the TTL signal driving module is used as a trigger signal of the high voltage pulse module; the auxiliary power supply is connected to a power supply port of the high-voltage pulse module through a buffer capacitor; the alarm feedback port of the high-voltage pulse module is connected with the alarm end of the single chip microcomputer, the high-voltage input end of the high-voltage pulse module is connected with the high-voltage source through the current-limiting resistor, the high-voltage pulse module is further connected with the RC absorption circuit, and the high-voltage pulse module outputs a pulse direct-current signal through the feedback resistor.
As shown in fig. 2, the high voltage switch module is composed of a high voltage pulse module U1And a peripheral circuit, a high-voltage pulse module U1(1) The pin is connected with an auxiliary +5V power supply and passes through a buffer capacitorC 1 Providing working power supply for internal circuit, high-voltage pulse module U1(2) The pin is connected with an externally input TTL pulse signal as a trigger signal of the internal driving circuit. Resistance (RC)R 1 And shaping the input TTL signal to reduce the ringing signal for a signal coupling resistor. The continuous trigger frequency of TTL signal is less than 5kHz, the maximum pulse group signal is not more than 1MHz, when the input TTL signal is incorrectTime, high voltage pulse module U1(4) The pin outputs a high level signal as a protection signal, and the high level signal is output to an STM32 singlechip circuit for fault protection. High-voltage pulse module U1(3) The pin (6) and the pin (6) are respectively used as a low-voltage grounding end and a high-voltage grounding end, and a star connection method and a buffer capacitor are adoptedC 2 And the output terminal grounding end is connected to the ground together, so that the signal interference is reduced as much as possible. High-voltage pulse module U1(5) The pin passes through the series current limiting resistorR 5 Is connected with a direct-current high-voltage power supply end,R 5 for limiting the current resistance, the current-limiting resistance can be variedR 5 To suit the requirements of the measurement or application.R 2 、C 3 The series connection forms an RC absorption circuit which is adjustedR 2 、C 3 The size of the voltage-controlled oscillator eliminates ringing interference which improves output direct current pulses as much as possible.R 4 For feedback resistance, due to high-voltage pulse module U1Setting the fixed turn-on time to 150ns, the load capacitance to be not more than 3nF, and the maximum peak current to be controlled by the feedback resistorR 4 The resistance value of (a) is determined,R 4 formula for calculating resistance value
；
Wherein the content of the first and second substances,V o is a direct-current high-voltage power supply,I p is the maximum peak current at which the current is,R start is a high-voltage pulse module U1The value of the static resistance of (a),R 3 for the load resistance, high voltage DC signal passesR 5 、R 3 、U 1 Forming the required pulse DC signal through a feedback resistor R4And output to the external terminal base.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specifically, as shown in fig. 1 and fig. 2, firstly, the commercial power 220V enters the system power circuit after being filtered and rectified, and is respectively provided for the auxiliary power supply, the TTL signal driving module and the STM32 singlechip circuit to supply power. Then, inputting instruction parameters through the display control module, and after receiving the instruction, the single chip microcomputer sends a signal to the TTL signal driving module, so that the TTL signal driving module sends a high-frequency signal to the high-voltage switch module, and the high-voltage switch module is conducted; meanwhile, the STM32 single chip microcomputer sends a signal instruction to the PWM modulation driving module, then the PWM modulation driving module sends a PWM programmable modulation signal to generate primary high voltage through the PMW high-voltage preceding-stage driving module, and then the primary high voltage is output to the rectification detection module and the rectification voltage doubling module, so that secondary high voltage, namely direct current high voltage of 200V-3000 kV is obtained, and then the secondary high voltage is stored by the buffer capacitor and output to the direct current high-voltage pulse output module to serve as a direct current high voltage source.
As shown in fig. 3, the working principle of the present invention is as follows:
step 1, a system power supply is switched on, and power is supplied to an STM32 single chip microcomputer (2), a TTL signal driving module (6) and a 24V auxiliary power supply (8) respectively after rectification and filtering. And resetting the system and waiting for an operation instruction.
And 2, according to a command input by the display control module (3), the STM32 single chip microcomputer (2) respectively outputs a command to the TTL signal driving module (6) and the PWM modulation driver (4) to trigger the PWM high-voltage preceding-stage driving module (9) to conduct and work, then, the PWM high-voltage preceding-stage driving module is rectified by the rectification detection module (10) and the rectification voltage-multiplying module (11), and the set high voltage is output and enters the high-voltage switch module (12).
And 3, triggering a driving front stage of the high-voltage switch module (12) by the adjustable TTL signal output by the TTL signal driving module (6), so as to control the on and off of the internal Mosfet and output a controllable and programmable direct current pulse signal on the glass glaze resistance-capacitance load.
And 4, in the working process, the PWM high-voltage preceding-stage driving module (9), the high-voltage detection module (10) and the high-voltage switch module (12) are subjected to real-time detection of the feedback protection circuit (7), and the automatic shutdown is realized when a problem occurs, so that the prompt and the alarm are realized.
And 5, after the shutdown, the discharge protection circuit (14) automatically discharges the high voltage on the buffer capacitor, thereby playing a role of safety protection.
As shown in fig. 4, a single pulse frequency display plot is demonstrated.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A nanosecond high voltage pulse generator, comprising: the system comprises a system power supply, an auxiliary power supply, a single chip microcomputer, a display control module, a direct-current high-voltage driving circuit, a direct-current high-voltage switching circuit, a discharge protection circuit and a feedback protection circuit; the system power supply is communicated with the auxiliary power supply, the single chip microcomputer and the direct-current high-voltage driving circuit and supplies power, and the single chip microcomputer is respectively communicated with the display control module, the direct-current high-voltage driving circuit, the direct-current high-voltage switching circuit and the feedback protection circuit; the output end of the auxiliary power supply is connected with the power supply end of the direct-current high-voltage switch circuit, the opening controlled end of the direct-current high-voltage switch circuit is connected with the output end of the direct-current high-voltage drive circuit, the direct-current high-voltage switch circuit is connected with the single chip microcomputer through the feedback protection circuit, and the direct-current high-voltage switch circuit is further connected with the discharge protection circuit.
2. Nanosecond high-voltage pulse generator according to claim 1, characterized in that: the direct-current high-voltage driving circuit comprises a TTL signal driving module, a controlled end of the TTL signal driving module is connected with the single chip microcomputer, and an output end of the TTL signal driving module is connected with a starting controlled end of the direct-current high-voltage switching circuit.
3. A nanosecond high voltage pulse generator according to claim 2, characterized in that: the direct-current high-voltage switch circuit comprises a PWM modulation driving module, a PWM high-voltage preceding-stage driving module, a rectification detection module, a rectification voltage-multiplying module, a high-voltage switch module and a direct-current high-voltage pulse output module which are sequentially and electrically connected, wherein the PWM high-voltage preceding-stage driving module, the rectification detection module, the rectification voltage-multiplying module and the high-voltage switch module are respectively connected with a feedback protection circuit, the rectification detection module is connected with a single chip microcomputer through a check and division detection module, the rectification voltage-multiplying module is connected with a discharge protection circuit, and the controlled end of the high-voltage switch module is connected with the output end of a TTL signal driving module.
4. A nanosecond high voltage pulse generator according to claim 3, characterized in that: the high-voltage switch module consists of a high-voltage pulse module and a peripheral circuit, wherein the peripheral circuit comprises a coupling resistor, a buffer capacitor, a current-limiting resistor, an RC absorption circuit and a feedback resistor; the auxiliary power supply is connected to a power supply port of the high-voltage pulse module through a buffer capacitor; the alarm feedback port of the high-voltage pulse module is connected with the alarm end of the single chip microcomputer, the high-voltage input end of the high-voltage pulse module is connected with the high-voltage source through the current-limiting resistor, the high-voltage pulse module is further connected with the RC absorption circuit, and the high-voltage pulse module outputs a pulse direct-current signal through the feedback resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122802344.2U CN216565097U (en) | 2021-11-16 | 2021-11-16 | Nanosecond high-voltage pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122802344.2U CN216565097U (en) | 2021-11-16 | 2021-11-16 | Nanosecond high-voltage pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216565097U true CN216565097U (en) | 2022-05-17 |
Family
ID=81574475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122802344.2U Active CN216565097U (en) | 2021-11-16 | 2021-11-16 | Nanosecond high-voltage pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216565097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116232055A (en) * | 2023-04-25 | 2023-06-06 | 北京理工大学 | Instantaneous high-voltage discharge device and discharge method adopting capacitor energy storage |
-
2021
- 2021-11-16 CN CN202122802344.2U patent/CN216565097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116232055A (en) * | 2023-04-25 | 2023-06-06 | 北京理工大学 | Instantaneous high-voltage discharge device and discharge method adopting capacitor energy storage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100577335C (en) | Numerical control double-power mode multifunctional impulsing power source for electrospark wire-electrode cutting processing | |
| CN216565097U (en) | Nanosecond high-voltage pulse generator | |
| CN101720563A (en) | Power supply for radio frequency heating apparatus | |
| CN104475886A (en) | Chopped-mode energy-saving electromachining pulse power supply | |
| CN113922475B (en) | Microsecond-level microwave pulse driving power supply and working method thereof | |
| CN103401468B (en) | A kind of plasma arc striking circuit | |
| CN101927211B (en) | High-voltage power device for electrostatic precipitator | |
| CN115038207A (en) | High-frequency large-current pulse type xenon lamp pre-burning system | |
| CN105703659A (en) | High-frequency and high-voltage pulse generator for sterilizing | |
| CN201403047Y (en) | Power supply circuit of plasma bipolar endoscope | |
| KR960006602B1 (en) | High frequency wave induction heating device using igbt | |
| CN113852363A (en) | Pulse switch signal generating circuit and pulse generating equipment | |
| CN107919250A (en) | A kind of gating pulse A.C. contactor, which starts, remains on circuit | |
| EP0893884A3 (en) | Method and device for controlling a gate turn-off thyristor | |
| WO2022036967A1 (en) | Pulse current generator and control method | |
| CN107947327A (en) | A kind of solar powered portable microsecond pulse high voltage power supply | |
| CN204397103U (en) | A kind of chopped mode energy-saving electrical adds working pulse power source | |
| CN105450176B (en) | A kind of independent-excited high-frequency and high-voltage oscillating circuit and control method | |
| CN204156749U (en) | A kind of high voltage pulse generation device | |
| CN114142833A (en) | IGBT drive circuit | |
| CN106026717B (en) | Three-phase rectifier and its control method for high frequency high voltage dc power source | |
| CN220913277U (en) | Electric spark experimental device | |
| CN218352789U (en) | Low-temperature plasma generator | |
| CN205901566U (en) | Half -bridge synchronous Rectifier integrated control ware circuit | |
| CN209913794U (en) | Bootstrap boosting xenon lamp pre-burning circuit and corresponding photon skin tendering machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |