阅读说明：本技术 一种电脉冲触发电路结构 (electric pulse trigger circuit structure ) 是由 宋法伦 张北镇 甘延青 龚海涛 金晓 李春霞 李飞 王淦平 王朋 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种电脉冲触发电路结构。包括脉冲产生电路、充电电路和倍压电路,充电电路包括正极性高压充电电路和负极性高压充电电路；倍压电路包括一个三电极触发开关,一个等效负载电阻和两个等效电容；三电极触发开关的触发极连接到脉冲产生电路的输出端；三电极触发开关的正、负高压电极连接到正、负极性高压充电电路的输出端；三电极触发开关的正、负高压电极分别连接有一个等效电容,与正高压电极连接的等效电容的另一端为电脉冲触发电路的输出端,该输出端上连接接地的等效负载电阻；与负高压电极连接的等效电容的另一端接地。本发明可保障脉冲功率源重频长时间运行,隔离和吸收反向冲击,触发源不会产生暂停、死机或损坏的现象。(The invention discloses an electric pulse trigger circuit structure, which comprises a pulse generating circuit, a charging circuit and a voltage doubling circuit, wherein the charging circuit comprises a positive polarity high-voltage charging circuit and a negative polarity high-voltage charging circuit, the voltage doubling circuit comprises three-electrode trigger switches, equivalent load resistors and two equivalent capacitors, trigger electrodes of the three-electrode trigger switches are connected to the output end of the pulse generating circuit, positive and negative high-voltage electrodes of the three-electrode trigger switches are connected to the output end of the positive polarity high-voltage charging circuit and the output end of the negative polarity high-voltage charging circuit, the positive and negative high-voltage electrodes of the three-electrode trigger switches are respectively connected with equivalent capacitors, the other end of the equivalent capacitor connected with the positive high-voltage electrode is the output end of the electric pulse trigger circuit, the output end is connected with the grounded equivalent load resistor, and the other end of the equivalent capacitor connected with the negative high-voltage electrode is grounded.)

1, kind of electric pulse trigger circuit structure, it includes pulse generating circuit, characterized by, still includes charging circuit and voltage doubling circuit, wherein:

the charging circuit comprises a positive polarity high-voltage charging circuit and a negative polarity high-voltage charging circuit;

the voltage doubling circuit comprises three-electrode trigger switches, equivalent load resistors and two equivalent capacitors, trigger electrodes of the three-electrode trigger switches are connected to the output end of the pulse generating circuit, positive high-voltage electrodes of the three-electrode trigger switches are connected to the output end of the positive polarity high-voltage charging circuit, negative high-voltage electrodes of the three-electrode trigger switches are connected to the output end of the negative polarity high-voltage charging circuit, equivalent capacitors are connected to positive and negative high-voltage electrodes of the three-electrode trigger switches respectively, the other end of the equivalent capacitor connected with the positive high-voltage electrodes of the three-electrode trigger switches is the output end of the electric pulse trigger circuit, the output end is connected with the equivalent load resistors, the other end of the equivalent load resistors is grounded, and the other end of the equivalent capacitor connected with the negative high-voltage electrodes of.

2. The electric pulse trigger circuit structure according to claim 1, wherein the pulse generating circuit is a pulse transformer type trigger circuit.

3. The electric pulse trigger circuit structure of claim 2, wherein the storage capacitor of the pulse transformer type trigger circuit is 10nF, the primary switch is a thyristor, the transformer transformation ratio is 1:6, and the rated charging voltage of the high-voltage power supply is 20 KV.

4. The electric pulse trigger circuit structure of claim 1, wherein the equivalent load resistance is a solid resistance.

5. The electrical pulse trigger circuit structure of claim 1, wherein said three-electrode trigger switch is a field-distorted gas spark switch.

6. The electric pulse trigger circuit structure of claim 1, wherein in the voltage doubling circuit, both of the equivalent capacitors are high-voltage pulse film capacitors.

7. The electric pulse trigger circuit structure of claim 6, wherein the capacitance values of both said equivalent capacitors are 30-40 nF.

8. The electric pulse trigger circuit arrangement according to claim 7, wherein said positive polarity high voltage charging circuit and said negative polarity high voltage charging circuit charge said two equivalent capacitors to +50kV, -50kV, respectively.

9. The electric pulse trigger circuit of of claims 1-8, wherein the positive polarity high voltage charging circuit comprises a th charging source, a th charging stack and a th grounding stack;

the negative electrode of the th charging power supply and the positive electrode of the th grounding silicon stack are grounded, the positive electrode of the th charging power supply is connected with the positive electrode of the th charging silicon stack in series, and the negative electrode of the th charging silicon stack is connected with the negative electrode of the th grounding silicon stack in parallel and then serves as the output end of the positive polarity high-voltage charging circuit;

the negative polarity high-voltage charging circuit comprises a second charging power supply, a second charging silicon stack and a second grounding silicon stack;

the positive electrode of the second charging power supply and the negative electrode of the th grounding silicon stack are grounded, the negative electrode of the second charging power supply is connected with the negative electrode of the th charging silicon stack in series, and the positive electrode of the second charging silicon stack is connected with the positive electrode of the th grounding silicon stack in parallel and then serves as the output end of the negative polarity high-voltage charging circuit.

Technical Field

The invention relates to the technical field of pulse power, in particular to electric pulse trigger circuit structures.

Background

Pulse power devices typically include boost devices, waveform shaping devices, switches, high current diode loads, etc. among these, the most reliable switch to operate with the most wide is the gas spark gap switch.

high-voltage electric pulse sources are generally used as trigger sources of the switch, which is the most common and least expensive practice.

In order to obtain high voltage pulses, there are two most basic circuit configurations, being of the Marx generator type and being of the pulse transformer type.

The Marx type high-voltage pulse circuit has high development cost, complex process and slightly large jitter, and is usually used for megavoltage gas switches and single-working pulse power sources.

When a trigger source is developed by using the technical route, the transformation ratio of the transformer is generally selected to be 1: 5-1: 10, the primary energy storage capacitor of the transformer outputs high-voltage pulses on the secondary side of the transformer after a primary switch is closed, and the primary switch can use a thyristor or controllable silicon according to actual requirements, and typical pulse transformer type trigger circuits using the thyristor as a primary switch component are shown in figure 2.

It should be noted that, like the pulse transformer type trigger circuit in fig. 2, there are general applications, but some pulse power systems are very prone to failure when the repetition frequency is running for a long time, because the switch triggered by the trigger source operates in a high voltage and large current environment, at the moment of closing the switch, there are high voltage fast pulse electrical signals, which are fed back into the trigger circuit from the output terminal, and coupled to the primary through the transformer, which may cause stress to the thyristor, or may interfere with the pre-regulator, causing a halt or a dead halt in the repetition frequency operation, and more seriously, may cause damage to some circuit modules.

Disclosure of Invention

The invention aims to provide electric pulse trigger circuit structures for solving the phenomena of pause, dead halt and damage easily occurring in the working process of a trigger source so as to ensure the reliable repeated frequency long-time operation of a pulse power source.

The technical scheme adopted by the invention is as follows:

an electric pulse trigger circuit structure, which comprises a pulse generating circuit, a charging circuit and a voltage doubling circuit, wherein:

the charging circuit comprises a positive polarity high-voltage charging circuit and a negative polarity high-voltage charging circuit;

the voltage doubling circuit comprises three-electrode trigger switches, equivalent load resistors and at least two equivalent capacitors, trigger electrodes of the three-electrode trigger switches are connected to the output end of the pulse generating circuit, positive high-voltage electrodes of the three-electrode trigger switches are connected to the output end of the positive polarity high-voltage charging circuit, negative high-voltage electrodes of the three-electrode trigger switches are connected to the output end of the negative polarity high-voltage charging circuit, equivalent capacitors are connected to positive and negative high-voltage electrodes of the three-electrode trigger switches respectively, the other end of the equivalent capacitor connected with the positive high-voltage electrodes of the three-electrode trigger switches is the output end of the electric pulse trigger circuit, the output end is connected with the equivalent load resistors, the other end of the equivalent load resistors is grounded, and the other end of the equivalent capacitor connected with the negative high-voltage.

In the pulse generating circuit, the largest interference pulse impacts reverse voltage from the output end of the pulse generating circuit, the largest interference pulse is directly coupled into a primary circuit through a transformer coil, a high-voltage power supply and a pre-regulator are very easily interfered, and the conditions of pause, halt and even circuit element damage are easy to occur when the pulse generating circuit operates repeatedly for a long time.

, the pulse generating circuit is a pulse transformer type trigger circuit, which has low cost and small jitter, and is suitable for repetition frequency operation in the application range of .

, the energy storage capacitor of the pulse transformer type trigger circuit is 10nF, the primary switch is a thyristor, the transformer transformation ratio is 1:6, and the rated charging voltage of the high-voltage power supply is 20 KV.

Further , the equivalent load resistance is a solid resistance.

Further , the three-electrode trigger switch is a field-distortion gas spark switch.

And , in the voltage doubling circuit, both the equivalent capacitors are high-voltage pulse film capacitors.

And , the capacitance values of the two equivalent capacitors are both 30-40 nF.

And , the positive polarity high-voltage charging circuit and the negative polarity high-voltage charging circuit respectively charge the two equivalent capacitors to +50kV and-50 kV.

, the positive polarity high voltage charging circuit comprises a th charging power supply, a th charging silicon stack and a th grounding silicon stack;

the negative electrode of the th charging power supply and the positive electrode of the th grounding silicon stack are grounded, the positive electrode of the th charging power supply is connected with the positive electrode of the th charging silicon stack in series, and the negative electrode of the th charging silicon stack is connected with the negative electrode of the th grounding silicon stack in parallel and then serves as the output end of the positive polarity high-voltage charging circuit;

the negative polarity high-voltage charging circuit comprises a second charging power supply, a second charging silicon stack and a second grounding silicon stack;

the positive electrode of the second charging power supply and the negative electrode of the th grounding silicon stack are grounded, the negative electrode of the second charging power supply is connected with the negative electrode of the th charging silicon stack in series, and the positive electrode of the second charging silicon stack is connected with the positive electrode of the th grounding silicon stack in parallel and then serves as the output end of the negative polarity high-voltage charging circuit.

The grounded silicon stack of the charging circuit absorbs the energy of the reverse impact to protect the charging power supply from entering the primary circuit due to the reverse impact.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the electric pulse trigger circuit structure can ensure that the pulse power source operates at repeated frequency for a long time, can ensure that the pulse power source continuously and stably operates at the frequency of 10Hz for 2 minutes without failure at least, can isolate and absorb reverse impact, and can not generate the phenomena of pause, dead halt or damage on the trigger source.

2. The circuit structure of the invention has strong anti-interference performance and high stability, and compared with a pulse transformer type circuit, the problems of pause, dead halt and the like are avoided; compared with a Marx generator type circuit, the circuit has low jitter and simple and convenient process and maintenance.

3. The frequency multiplier circuit designed by the invention can enable the effective trigger energy of the circuit structure to reach hundreds of joule magnitude.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic diagram of a pulse transformer type circuit.

Fig. 2 is embodiments of a typical pulse transformer type trigger circuit.

Fig. 3 is a circuit diagram of the electric pulse trigger circuit structure of the present invention.

Fig. 4 is a circuit diagram of an electric pulse trigger circuit configuration based on the pulse transformer type trigger circuit in fig. 2.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any of the features disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise, i.e. each feature is simply examples of a series of equivalent or similar features, unless expressly stated otherwise.