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Multi-turn LTD pulse generator

A pulse generator and pulse voltage technology, which can be applied to electric pulse generator circuits, active components to generate pulses, and electromagnetic-magnetic devices to generate pulses. The effect of large adjustment range and small volume

Active Publication Date: 2020-04-10
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basic structure of the LTD module is a transformer with 1-turn primary and secondary, and its control circuit is at ground potential. However, due to the existence of the saturation effect of the magnetic core, the pulse width is limited. At present, the pulse width of the all-solid-state LTD is less than 200ns. If a pulse with a larger pulse width is generated, the size of the magnetic core needs to be increased, resulting in a bulky pulse source

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] see figure 1 , three-stage all-solid-state multi-turn LTD pulse generator, mainly including resistor R L , Diode D I , Diode D II , Diode D III , switch tube Q I , switch tube Q II , switch tube Q III , Class I LTD module, Class II LTD module and Class III LTD module.

[0074] Preferably, the three-stage all-solid-state multi-turn LTD pulse generator can include a resistor R L , Diode D I , Diode D II , Diode D III , switch tube Q I , switch tube Q II , switch tube Q III , Several parallel I-level LTD modules, several parallel II-level LTD modules, and several parallel III-level LTD modules.

[0075] The equivalent circuit diagram of a three-stage all-solid-state multi-turn LTD pulse generator is shown in figure 2 shown. Diode D I , Diode D II , Diode D III It is a freewheeling device during discharge. The switch tube may be an IGBT, a thyristor, a GTO, and the like.

[0076] The circuit structure is as follows:

[0077] Note resistance R L The gr...

Embodiment 2

[0109] see image 3 and Figure 5 , M-class all-solid-state multi-turn LTD pulse generator, mainly including resistor R L , M diodes D i , M switching tubes Q i and M LTD modules. i=1,2,3...,M.

[0110] The circuit structure is as follows:

[0111] Note resistance R L The ground terminal of G is G, and the other end is H. Resistance R L The G terminal of the terminal is grounded, and the H terminal is connected in series with the diode D M the anode. Resistance R L The H end of the terminal is connected to the Y of the M-level LTD module M end. Resistance R L The G terminal is connected to the diode D 1 the negative pole. Resistance R L The G terminal is connected to the X of the Level 1 LTD module 1 end

[0112] Diode D i+1 The cathode of the series diode D i the anode. Diode D i+1 The cathode of X connected to the LTD module of level i+1 i+1 end. Diode D i+1 The cathode of the i-level LTD module is connected to the Y i end. X of the LTD module at l...

Embodiment 3

[0130] In the three-level all-solid-state multi-turn LTD pulse generator, the circuit structure of the i-level LTD module can be found in Figure 4 ,which is:

[0131] Note that the starting end of the N-turn coil wound on the core i is X i , ending in Y i .

[0132] Capacitance C i One end of the access Y i end, and the other end is connected in series with the switching tube Q i the drain. Switch tube Q i The gate is left floating. Switch tube Q i The source is connected to X i end.

[0133] When the switch tube Q i When turned on, the capacitor C i discharge. The current flows sequentially through the switch tube Q i , core i, capacitor C i , forming a loop L1, the current flows through the resistor R in turn L , The i-level LTD module then flows back to the resistor R L , forming the loop L2. Figure 4 The middle circuit L1 is regarded as the primary circuit of LTD, and the circuit L2 is regarded as the secondary circuit of LTD. It can be seen that the pr...

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Abstract

The invention discloses a multi-turn LTD pulse generator which mainly comprises a resistor RL, M diodes Di, M switching tubes Qi and M LTD modules. The high-voltage pulse generator is small in size, all-solid-state and high in repetition frequency, and the rising time and the falling time of pulses, the pulse width and the pulse amplitude can be flexibly adjusted.

Description

technical field [0001] The invention relates to the field of pulse generation, in particular to a multi-turn LTD pulse generator. Background technique [0002] Pulse power technology is widely used in many fields, such as tumor treatment, food processing, water treatment, plasma generation, national defense and military industry, etc. Most applications require fast leading edge, short pulse width, high power, high repetition frequency, and flexible and adjustable parameters. In order to meet these requirements, the switch for pulse power generation needs to be able to work stably and repeatably at a high frequency, and the switch can be controlled by a signal. [0003] The traditional pulse power generation technology mainly uses magnetic switches, air switches, etc. as discharge switches. The circuit topology includes single capacitor discharge, Marx, LTD, or transmission lines, etc. It is difficult to meet the application requirements of high repetition frequency pulse p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/59H03K3/021
CPCH03K3/59H03K3/021
Inventor 董守龙姚陈果余亮马剑豪曾伟荣
Owner CHONGQING UNIV
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